■a'f^fM-'t,'!^€-n€(i- -a-. GEN. D. W. FLAGLER JOH^' H, B/^RR. ■c-e-C up %yi.iZ4^ii-iiC'e fSiW V.2 "iffi.l!,.?.!,,"'^ '®®** <•' metals and other 3 1924 004 632 976 Cornell University Library The original of tiiis book is in tine Cornell University Library. There are no known copyright restrictions in the United States on the use of the text. http://www.archive.org/details/cu31924004632976 JOHN ii. bi\ii^ REPORT O* THE TESTS OF METALS OTHER MATERIALS yoB INDUSTRIAL PURPOSES MADE WITH THE UNITED STATES TESTING MACHINE AT WATERTOWN ARSENAL, MASSACHUSETTS, THE FISCAL TEAR ENDED JUNE 30, 1890. WASHINGTON: GOVERNMENT PRINTING OFFICE, 1891. LETTEE THE SECRETARY OF WAR. TKANSMITTING, With a letter from the Chief of Ordnance, a risport of the colonel command- ing the Watertown Arsenal of the tests of iron and steel, etc., made with the United States testing machine during the fiscal year ended June 30, 1890. JaniJart 9, 1891.— Referred to the Committee on Expenditures- in the War Depart- ment. Wae Department, Washington, D. C, January 8, 1891. SiE : I have the honor to transmit to Congress, in compliance with the provisions of the sundry civil act of March 3, 1885 (23 Stats., p. 502), a letter from the Chief of Ordnance, U. S. Army, dated the 6th instant, and its accompanying report of Col. D. W. Flagler, Ordnance Department, U. S. Army, commanding the Watertown Arsenal, dated December 31, 1890, of " tests of iron, steel, and other materials for industrial purposes," made with the 'United States testing machine daring the fiscal year ended June 30, 1890, Very respectfully, Eedfield Proctor, Secretary of War. The Speaker of the House op Eepbesbntatives. Ordnance Office, War Department, Washington, D. C, January 6, 1891. Sir: I have the honor to submit for transmission to Congress, as re- quired by law, the report of Col. D. W. Flaglor, Ordnance Department, commanding Watertown Arsenal, of "tests of iron, steel, and other materials for industrial purposes," made with the United States testing machine during the fl^scal year ended June 30, 1890. Very respectfully, S. V. Ben^t, Brigadier- General, Chief of Ordnance. The Secretary of War. 3 4 tests of iron, steel, and other materials, 1890. Wateetown Arsenal, Watertown, Mass., December 31, 1890. SiB: I have the honor to submit the following report of tests of ma- terials for industrial and other purposes made at this arsenal during the fiscal year ending June 30, 1890, in compliance with the require- ments of the act of Congress appropriating funds for the testing ma- chine. The total number of specimens tested during the year is 5,655. The receipts and expenditures were as follows : Amount appropriated for testing machine and testing work $10, 000. 00 Received during the year for private tests 1, 250. 24 Total received 11,250.24 Amount expended for services and labor 8,420.39 Amount expended for light, power, tools, implements, and material for test ^.:.. 2,829.85 Total expended 11,250.24 The tests made are comprised under three classes, viz : (A) Tests made for the various Departments of the Government. ^B) Tests made for private parties. (C) Investigating tests. A portion of the tests in Class A are tests of metals used in gun con- struction. Of these, 1,244 specimens have been tested during the year. The others under this class are tests made for the various arsenals and for other Departments of the Government, amounting in all to 3,420 specimens, making the total number of specimens tested under Class A during the year 4,664. The tests made under Class B are paid for by the parties who have the tests made, and the results obtained, being confldeutial, are not given in the report. The total number of specimens tested in this class during the year is 991. Class C comprises a large variety of investigating tests and work which occupies the time of the testing machine when not occupied with work comprised under Classes -A and B. The object of these tests is the development of knowledge, useful to the public, in regard to the physical properties, strength, and endurance of materials used for structural purposes. The principal work and subjects of investigation pursued during the year are as follows : Tests upon the effects of alter- nate stresses in iron and steel ; the internal strains in steel forgings ; tests of railway axles and steel rails which have uiidergone long-con- tinued service ; the endurance of metals subjected to repeated trans- verse stresses in rotating shafts ; an inquiry into the physical properties of natural and artificial building stones, including effects of alternate heat and cold, moisture and its absence, on their strength and endur- ance ; and numerous special and isolated tests for developing data and knowledge in special directions, not forming an immediate part ot cur- rent investigation, but giving completeness to general metallurgical knowledge and supplying valuable information to meet the exigencies of immediate demands. Although the tests under Classes A and B were made to determine the quality of materials and whether they fulfilled specifications, many of them have furnished knowledge useful for the investigations under Class C, and some of the reports under Class A are included in the reports of these investigations, TESTS OF IRON, STEEt, AND OTHER MATERIALS, 1890. 5 Some of the most interestiug and important of the iavestigatious carried on during the year under Class C are the following : ENDURANCE TESTS OP ROTATING SHAFTS. The general purpose of this series of tests has been to determine the relative and absolute endurance of different grades of steel and of wrought and cast iron when subjected to repeated alternate stresses applied transversely, the stresses themselves varying in magnitude from the elastic limit of the metal upward to near its ultimate strength. The circumstances and stresses of these endurance tests are made analogous to those the metal is to undergo in actual service. The tests are tedious and expensive. An examination of the metal under other kinds of stresses, cheaply applied, such as tensile, compression, and transverse stresses, develops certain characteristic features in each case. One object in view has been to determine the relative impor- tance and effect of these several features on the endurance tests, in order that we may, through a determination of the qualities of a metal by these cheap simple tests, predict what would be the conduct and en- durance of the same in an actual service analogous to its service in the endurance test. The significance of ordinary tests is little known. The fact that a metal possesses a certain elastic limit, tensile strength, elongation and contraction of area when ruptured by once loading, fails to convey an adequate idea of what the same metal will do uncW circumstances of repeated stresses, or when these repeated stresses are applied in alter- nate directions. The present investigation pertains to the effects of alternate stresses in opposite directions in which the tensile and compressive stresses are of equal magnitude or nearly so, the difference being due to a slightly greater yielding in one direction, and a probable change in the position of the neutral axis in consequence of a difference in ductility on the two sides of the specimen. The observations made include all the phenomena which accompany the test from its commencement up to the time of rupture, in order that it may be known what phases the metal passes through in the prog- ress of rupture. In fact, such information is essential to a recognition of what influences are deteriorating and of the time when the metal reaches a critical state bordering on dissolution. These experiments are thought to be the first inaugurated which include a systematic ob- servance of the phenomena preceding rupture, or at least the first carried out to any considerable extent. ISo one series of tests, however, gives completeness to the metallurgi- cal points raised during an investigation. Hence in the endurance tests many of the accompanying data are better understood by refer- ence to the results obtained in the series of temperature tests, the effects of overstraining by tension, the effects of alternate tensile and compress- ive stresses, and tests on internal strains. Each of these classes con- tribute toward the complete elucidation of phenomena observed during an endurance test. The endurance tests comprise tests made at differ- ent speeds of rotation, from shafts slowly rotated by the hand up to a speed of 2,200 rotations per minute. Therefore at the highest rate of speed the stresses alternate from tension to compression in an interval of a little less than one thirty-sixth of a second, or in passing from a neutral state of stress to the maximum tensile or compressive stress the time occupied is about one seventy-third of a second. Higher speeds of rotation will be experimented with. 6 TESTS OP IRON, STEEL, AND OTHER MATERIALS, 1890. It will be seen that certain effects of rapidly applied stresses and stresses approaching vibratory movements are conveniently investi- gated in this class of experiments. , It may be observed that the molecular movements, as indicated by the transverse deflection of the shafts, is not interfered with by the highest speed of rotation which has yet been employed if the stresses are below the elastic limit of the metal. If, however, the elastic limit is exceeded, the transverse deflection is less at high speeds than at low speeds. There is not time enough for performing the work against molecular friction and for completing the bending movement. In this case there is a rapid elevation in tempera- ture unless means are employed to prevent it, such as running a stream of cold water on the shaft. Comparative tests of both iron and steel shafts have been made at ordinary atmospheric temperature, and the same at the temperature of a blue heat or in the vicinity of 500° to 700° F. Attention is invited to the remarkable endurance of a cast-iron bar which has made 37,151,900 revolutions while under the maximum fiber stress of 15,000 pounds per square inch. The bar is still unbroken. A portion of the shafts have been annealed at intervals. Others have been run at higher temperatures for a time and the test then com- pleted cold. Some bars have been initially heated by means of gas burners and the tests commenced hot and so continued. Others have been allowed to acquire a higher temperature from the molecular fric- tion caused by excessive loads and a high rate of speed, no external heat being supplied in this case. It is proposed to extend the tests by embracing a wider range of material in which the physical properties of the metals vary, from dif- ferences in chemical composition, and from differences in manipula- tion in the process of manufacture, comprising both hot worked and cold rolled, swaged, or drawn material. It is proposed also to continue the investigation at different temperatures ; to ascertain the effect of overstraining with high loads on the subsequent endurance under mod- erate stresses to ascertain whether time is a function of the ultimate endurance, i. e., whether varying the speed of rotation, other conditions of stresses ; and temperature remaining unchanged, affects the results. It is also proposed, for observations upon the elastic propertiies, to in- crease the speed to the highest attainable. ALTERNATE STRAINING OF STEEL, VTROTJGHT IRON, AND CAST IRON BARS. This series of tests has been undertaken chiefly for the investigation of the elastic properties of steel and iron ; the disturbance of elastic limits by overstraining; the temporary changes in the modulus of elasticity ; the observance of bars which have rested a long time after they have been overstrained by tensile stresses or compressing stresses, and the restorative effects of annealing at different temperatures and by exposure to the annealing temperature through varying periods of time. Incidental to the above observations have also been made upon the ratio of lateral contraction to longitudinal extension and of lateral expansion to longitudinal compression. These tests have been inaugurated and valuable data have been de- veloped, yet much of the work contemplated on this series remains to be done. In conjunction with the alternate straining by tension and compres- sion stresses, there are in progress similar tests by transverse stresses, not incladed in the rotating tests. TESTS OF IKON, STEEL, AND OTHEE MATERIALS, 1890. 7 THE INTERNAL SXBAINS IN SOME G-UN FOEGINGS HAVE BEEN INVES- TIGATED. This is an important line of investigation. Its object is to ascertain whether the preceding manipulation of the metal has left it in a state of comparative repose (that is, free from " initial strains "), or whether it is under strains or possesses within itself elements which may con- tribute to its destruction ; or in cases where these internal strains have been introduced intentionally, to determine whether and to what ex- tent they assist the normal strength of the metal in enduring the stresses incident to service. The effect of various kinds of treatment may be understood by an ex- amination of the state of strain left, and further, it is believed ihat by means of this kind of investigation much important information touch- ing upon questions of chemical composition may be solved. Previous investigations have connected the presence of internal strains with changes in-density. , If there were no changes in den- sity it would be difficult to explain the presence of internal strains. It is obviously of interest to asceirtain whether' radical differences in chemical composition are accompanied by concomitant changes in the ability to receive internal strains. Muchprominence has been given to this and to kindred classes of tests, because it has seemed that many fundamental features were manifested by the metal in this direction, and that a critical examination would enable deteriorating conditions or treatment to be recognized thereby. The testing of metals to determine the possession of specified physi- cal properties is essential in order that a certain quality or grade of metal may be obtained to meet the requirements of important work, but such tests for quality leave many important questions untouched. The class of tests under consideration are capable of supplying some of the additional information required, and it is thought they justify the prominence that has been ^nd continues to be given to this branch of the subject of the strength of materials. TESTS OP RAILWAY MATERIALS. The tests of railway material have been continued and comprise the tests of axles, rails, and brake beams in the present report. The im- portance to the public of safety in all railway material and the severe stresses to which this class of material is ordinarly exposed make this , subject one of importance. Axles. — Axles have been examined which have had long-continued service, the journals of which showed incipient cracks, indicating that rupture had begun and that further use must result in complete rupture. It is a remarkable fact that the tests of the metal of these journals near these cracks showed no loss of strength or ductility. Fo indications of a tehdency to crystallize were discovered, and inasmuch as the metal has gone through all the phases of deterioration up to the limit of actual rupture without showing a crystalline tendency, it is thought this demonstrates and proves that this material is incapable of cold crys- tallization when exposed to the conditions of service. The endurance tests of rotating shafts supplement in a measure the indications ol these axle tests. The endurance tests made at a blue heat have an important practical bearing upon the question of the condition of a railway axle which has been run in an overheated condition. Steel rails. — Some preliminary tests hav6 been made of an exhaustive 8 TESTS OF IRON, STEEL, AND OTHER MATERIALS, 1890. series of tests upon the strength of steel rails. The series will embrace the tests of a large number of different types of rails and of metal hav- ing a wide range of chemical composition. A number of old rails which have given excellent results against abrasion and wear in the track will be examined by different physical tests and chemical analyses. Transverse elasticity and strength are now undergoing examination, and more extended results on this subject will appear in the next an- nual report of tests. Some important results are now being reached with rails examined after they have been repeatedly so overloaded as to cause bending in different directions — that is, first downward and then upward — which treatment, in conjunction with the test of corresponding steels at higher temperatures, affords an intimate knowledge of the effects of overloading the track, of how far efforts to correct bent rails in the track may be successful, and determine what is the final state of the metal after such efforts. Also, the tests directly demonstrate what state new rails may be expected to be in which have been straightened by the usual process of gagging at low temperatures. All the phenom- ena connected with overstraining rails is of exceeding interest and will be fully developed in the next report. ' TESTS OF NATI-EAL AND ABTIFICIAL STONES. Some artificial stones and the natural stones of geological classes generally in use for building purposes are being investigated. The re- sults in this report comprise coefficients of expansion and moduli of elasticity under compression stresses. These are preliminary to an exhaustive physical and chemical investigation of this class of material which is now in progress. *This includes an investigation of the elastic properties of stones under pressure; the observation of phenomena under the application of heat and frost, wetting and drying; chemical composition; and the effects of solvents and oxidizing elements and compounds. It is hoped that an exhaustive investigation of both well- known durable stones and of well-known bad stones which fail and decay in known ways may determine enough of the characteristics of good and bad stones to enable us to ascertain thereafter by simple economical tests whether stones are suitable for architectural and en- gineering structures (or at least aid us in so doing). At present the only practicable sure method is the tedious and expensive test of erect- ing structures and waiting several decades to observe the effects of time, atmospheric and weather influences, and involves the serious expense of having structures fail because stones that were believed to be good turn out to be bad, or the expense of declining to use good cheap stones because they could not be proven to be good. The increasing tendency to erect high architectural structures in large cities and the increasing magnitude of engineering structures adds greatly to the importance of the investigation of the elastic prop- erties of building stones and brick. This subject has received too lit- tle attention hitherto, and will be a prominent feature in the prosecu- tion of this investigation. During the current year the investigation of the strength and elas- ticity of hemp and manilla cordage, commenced some years ago, will be continued on ropes of larger sizes. The temperature tests of iron and steel will also be resumed. It is thought that the data already developed places this subject in advance of all previous experiments. The intimate relation existing between the solution of important liietallurgical manufacturing ques- TESTS OF IRON, STEEL, AND OTHER MATERIALS, 1890. 9 tions and the indications of tbe hot tests of the metals gives a valua- ble significance to these results. , When we considpr the limited thermal range over which these experiments have heretofore extended, and the wide field still unexplored, it leads to the belief that great benefit should result from this branch of investigation. A change of physical prop- erties accompanies and appears to correspond to changes of tempera- ture, and it is believed that the physical effects of changes of chemical composition and mechanical treatment can be shown by these temper- ature tests at higher temperatures. At any rate, the results are strik- ingly suggestive of such application. The tests and investigations are grouped under the subjects given in the preface. TABLE OP CONTENTS. Complaints have been made of the difficulty experienced in finding and pursuing the study of special subjects in previous printed reports. To overcome this, this report has been arranged to have a brief of sub- jects printed at the top margin of the pages. The addition of a chemical laboratory to the testing department was deemed so important that a special estimate therefor was made on March 19, 1890, and Congress has given the necessary appropriation therefor. A knowledge of the chemical composition of materials is needful in planning and carrying out the expensive physical investigations made on the testing machine. Also, when satisfactory conclusions are ar- rived at as to what structural materials are best or satisfactory, it is very important 'to couple with this knowledge a knowledge of the chemical composition of these materials, as-this may thereafter enable the public to sometimes identify and select satisfactory materials by a simple and inexpensive chemical analysis. This is especially true of stones and mortars. The employment of a chemist permits also the repair and use of the excellent photographic apparatus on hand and the valuable addition of photographs of specimens to future reports. Special attention is invited to the loss to the public from the long delay in publishing these reports. The last report published is that of 1887. The delay withholds from the public for several years valuable and oftentimes much-needed information. Both the lack and need of this knowledge leads sometimes to dupli- cate expensive and unnecessary investigation and tests by other par- ties. The reports of these being first published sometimes deprives the testing department here of rightful reputation. The investigations here can not take their proper place and have their proper effect in furnishing knowledge on current topics in physical and engineering science and as aids to the investigations of others if the knowledge obtained is withheld from the public 3 or 4 years. The delay leads to applications for information in regard to results which have been obtained.. As this knowledge is part of an official re- port, it can not be furnished privately, and this sometimes causes dis- satisfaction. Very respectfully, your obedient servant, D. W. Flagler, Colonel, Ordnance Department U. S. Army, Commanding. The Chief op Ordnance U. S. Army, Washington, D. C. TABLE OF CONTENTS. Page. 1. 3.2-iiioh steel B. L. rifles 13-49 2. 3.6-inoh steel B. L. rifles 50 3. 8-inch steel B. L. rifles ,.. 51-59 4. 10-inch wire- wound rifle 61-106 5. 12-inch B.L. rifle No. 1 107-169 6. 12-inch B. L. rifled mortars 171-437 7. Sqaare and flat steel wire 429-665 8. Alnminum and aluminum brass and bronze 667-678 9. Bronze from fractured tray hinge 679 10. Brass and steel ribbon tape • 681-684 11. Alternate straining of steel, wronght-iron, and cast-iron bars 685-718 12. Specimens from stem of overstrained steel eye-bar 719-731 13. Initial strains in 8-inch tube and jacket and hoop Ai for 12-inch steel B.L. rifle 733-736 14. Cast iron and pig irons 737-739 15. Compression of Belleville springs 741-747 16. Compression of rubber buffers 748-752 17. 12-inch mortar bodies, compression of quadrants 753-755 18. Railway axles 757-787 19. Steelrails 789-800 20. Brake beam 801 21. Miscellaneous steel specimens 802-857 22. Straining of cold-rolled staves for Woodbridge 10-inch rifle 858-860 23. Pyrotechnic mortar body 1 861 24. Chaincable 862 25. Endurance of rotating shafts 863-1095 26. Stones and building material »... 1097-1134 27. Shot-lines for U. 8. Life-Saving Service 1135-1149 28. Cotton cloth 1150 29. Manilla rope 1151 30. Private tests 1152-1154 11 Jhirro? of ^vuv iypecjime/i*y ^Tev^'S-T^an^ <■ yu -^ -^ \ 20 CLTTJ^ ^3 N, •^ ^ -^ 1 'TTf^ ^- / / > 1 1 L<^ <_?'",c . 000300 . 000150 .000250 .000250 .001050 . 002800 .000600 . 002200 .002000 . 003200 .002300 .002100 Inch. 0. 0. Inch. 0. tnitiallOad. Elastic limit. TensUe strength. 0. .000150 .000150 General summary. Tensile strength per square inclL of original section ponnda.. 81,050 Elastic limit per square inch, of original section do... 42,000 , Elongation per inch after rapture - , inch.- 0.2500 Elongation per inch under strain at elastic limit ,.do... .001550 .Beductionin diameter at point of rapture do... .125 Bedaction in area after rapture, per centum of original section 43. 3 Po^ijaonrof rapture --- ..I^.IS from neck Character of broken sarface...-. .' silky Elongation of inch sections ".a7*/'.23 H. Ex. 165 2 18 3.2-INCH STEEL B. L. RIFLES. No. 3941. Marks, f?«jj Diameter, ".505. Sectional area, .20 square inch. G-auged length, 2". Applied loads. Elongation per inci. SaccessiT'e elongation per inch. Permanent set. Successive permanent set. Bemarks. Total. Per aquare inch.- Pownde. 200 1,000 2,000 4,000 6,000 7,000 8,000 8,200 8,400 8,600 8,800 9,200 9,600 10, 000 10,400 10, 800 15,420 Pomds. 1,000 6,000 10, 000 20, 000 30, 000 36,000. 40, 000 41, 000 42, 000 43, 000 44, 000 46, 000 48, 000 60, 000 52, 000 64,000 77,100 Inch. 0. . 000160 . 000350 . 000600 . 000950 . 001100 . 002550 . 004900 .008050 .009000 .010050, .012350 .014750 . 017000 . 019400 .022350 Inch. 0. . 000150 . 000200 .00 250 . 000350 .000160 .001450 . 002350 .003150 . 000950 . 001050 .0023U0 . 002400 . 002250 , 002400 . 002960 Inch. 0. 0. Inch. 0. Initial load. Elastic limit below 40, 000 pounds per square inch. TensUe strength. 0. . 001350 . 001350 General summary. ^ Tensile strength per aquare incli of original section pounds.. 77,100 Elongation per inch after rupture inch.. 0.2600 lieductionin diameter at point of , rapture do... .115 Keductiou in area after rupture, per centum of original section , 40. 3 Position of ritpture 1".10 from neck Character of Droken surface silky Elongation of inch sections ".20, ".30* 3.2-INCH STEEL B. L. EIFLES. No. 3884. 19 Marks, |2B»t Diameter, " .505. Sectional area, .20 sqaare inch. Gauged length, 2". ' Applied loads. Elongation per inoh. SnccesslTe elongation per ineli. Permanent set. Snccessive permanent set. Kemarks. Total. Per somare inoli. Poimds. 200 1,000 2,000 4,000 6,000 '7,000 8,()00 " 8,400 8,600 8, 800 9,000 9,200 9,400 9, 600 .. 10, 000 10,400 10,800 11, 200 11,600 16,110 Pounds. 1,000 6,000 10,000 20, 000 30,000 35, 000 40, 000 42,000 43, 000 44,000 45, 000 ' 46,000 47,000 48,000 " 50,000 52, 000 54,000 56, 000 . 58,000 80, 650 Inch. 0. .000150 .000400 .000750 . 001200 .001350 . 001500 . 001550 .001600 .001650 .001700 . 004900 .006600 .008000 .010350 .012250 . 014500 .017250 .020000 Inch. 0. .000150 . 000250 . 000350 . 000450 .000160 . 000150 . (100050 . OOOOSO . 000050 . 000060 . 003200 . 001700 .001400 .002360 . 001900 .002250 .002750 . .002750 Inch. 0. 0. Inch. 0. Inltlalload. Elastic limit. Tensile strengtli. . 000100 .000100 . 000100 .0 General summary. Tensile strength per sqnare inch of orieinal section ponnds.. 80,650 Elastic limit per square inch of originalsection do... 45, 000 Elongation per inch after rnptnre .-, inch.. .2*00 Elongation per inch under strain at elastic limit do... .001700 ^Reduction in diameter at point of rupture do... .115 Keduction in area after rupture, per centum of original section 40.3 Position of rupture '. 1" from neck Character of broken surface silky, oblique, serrated Elongation of inch seotions ".15 ".33* 20 3.2-INCH STEEL B. L. BIFLES. No. 3886. Marks, gB«j Diameter, ",505. Sectional area, .20 square inch. Gauged length, 2". Applied loads. Elongation per incli. Sacoesslve elongation per inch. Permanent set. Snccessive permanent set. BemarkB. TotaL Per square inoh. Pounds. 200 1,000 2,000 . 4,000 6,000 ■ 7, 000 8, 000 8,400 8,600 8^800 9,000 >9,200 9,400 ' 9, 600 10, 000 10; 400 10,800 11, 200 11, 600 16,210 Powtids. ■ 1,000 5,000 10,000 ' 20,000 30,000 3B, 000 40,000 42, 000 43, 000 44,000 45, 000 46, 000 47, 000 48, 000 60, 000 52,000' 54, 000 56,000 68, 000 81,050 Inch. 0. . 000150 .000300 .000600 .000900 .001100 . 001200 . 001300 .001300 . 001350 .001350 . 007450 .007850 . 008650 .011000 .018360 . 015350 .017550 .020000 Inch. 0. ■ .000150 . 000150 . 000300 . 000300 .000200 . 000100 .000100 0. .000050 0. .006100 - .000400 .000800 .002350 . 002250 .002100 .002200 .002450 Inch. X- 0. Inch. 0. Initial load. Elastic limit. Tensile strength. 0. 0. General nummary. tensile strength per Bqnarft inch of original section pounds. . 81,050 Elastic limit per sqnare inoh of original section i. ^.,..- do,.. 45,000 Elongation per'inch after rapture inch,.! 0.2350 Elongation per inch under strain at elastic limit .,, do. 11 .001350 Keduction in diameter at point of rupture ., , do." . U5 Reduction in area after rapture, per centum of original section .- 40 3 Position of rupture ".65 from neck Character of broken surfEiGe -..—.—.■..„ ....silky serrated Elongation of inoh seotlonB „., , .'.'...■>....... ".83* ".14 3.2-INCH STEEL B. L. EIFLES. No. 3942. 21 Marks, i5;«^ Diameter, ".505. Sectional area, .20 square inch. Gauged length, 2". Applied loads. Elongation per inch. Sncoessive elongation per inch. Pepmanent set. y Sncoessive permanent set. Bemarks. Total. Per square incli. Pounds. 200 1,000 -2,000 4,000 6,000 7,000 8,000 8^400 8,600 ■ 8, 800 9,000, 9,200' 9,400 9,600 9,800 10, 000 10,200 10,400 > 10,800 11,200 : 11,600, -12,000 12,400 17,680 Pound's, - 1,000 5, 000 10, 000 20, 000 30, 000 35,000 40,000 42,000 43,000 44,000 45, 000 46, 000 47, 000 48, 000 49,000 50,000 51,000 52,000 54, 000 , 56,000' 58, 000 ~ 60,000 62, 000 87,900 Inch. 0. .000100 . 000300 .000550 . 000900 .001000 .001300 .001350 . 001400 .001400 . 001450 .001600 . 001500 - .001550 .001600 .001850 . 002450 .003750 .007000 .008760 .011600 .014000 . 016250 Inch. (T. .000160 . 000200 .000250 . 000350 .000200 . 000200 .000050 . 000050 0. . 000050 . 000050 0. .000050 . 000050 .000250 . oooeoo .001300 .003250 .001750 .002750 .002600 .002250 ~ Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. 0. 0. , \ General summary. Tensile atrength per square iaoh of origmal section potmds.. 87,900 Elastic limit per square inoli of original section.... do... 49, 000 Elongation per iuch after mptnre incb.. 0.2000 Elongation per inch, under strain at elastic limit do- -. .001600 Kednctionin diameter at point of rapture .' do... .125 Beduction in area after raptnre, percentnm of original section , 43.3 Position of raptnre... '. ,",60 from neck Character of broken snrfaoe... « ». silky Elongatioii of inoli sections .«....".09, "-^l* 22 3.2-INCH STEEL B. L. RIFLES. No. 3943. Marks, Vf A Diameter, ",505. Sectional area, .20 square inch. Gauged length, "2. Applied loads. Sacceesive elongation •per inch. Permanent set. Successive permanent set. Bemarks. Total. Per square iucn. per inch. Pounds. 200 1,000 2,000 4,000 6, 000 7,000 8,000 8,400 8,600 8,800 9,000 9,200 ■ 9, 400 9,600 10,000 10, 400 10, 800 11, 200 17,340 Pounds. 1,000 6,000 10,000 20,000 30, 000 36, 000 40,000 42, 000 43, 000 44, 000 45, 000 46,000 47, 000 48, 000 60, 000 52, 000 54, 000 56,000 ■ 86, 700 Inch. 0. . 000100 . 000300 . 000550 .000950 .001160 . 001300 . 001360 . 001350 .001400 .001450 . 002000 . 002700 . 003750 .006900 .009000 . 011400 .012900 JncA, 0. . OOOIOO . 000200 . 000250 . 000400 .000200 . 000150 . 000050 0. . 000050 . 000050 . 000550 . 000700 . 001050 . 003150 . 002100 .002400 .001500 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. 0. 0. General summary. TcDsile streDgth per square inct of original section ponnds.. 86,700 Elastic limit per square inch of original sebtion tlo... 45, 000 Elongation per incn. after rupture ^ inch.. 0.2400 Elongation per inch under strain at elastic limit do... .001450 Keduction in diameter at point of rupture - do . . . . 125 Kednction in area after rupture, per centum of original section 43. 3 Position of rupture.- "1.10 from necls Character of broken surfaoe silky Elongation of iAOlLseotious......... * ,... ''.30*, 'M8 3.2-INCH STEEL B. L. KIFLES. 23 Marks, ^ M Diameter,/'.505. Sectional area, .20 square inch. Gauged length, 2". No. 3886. AppUed loads. Elongation per inoh. Successive elongation per incli. Permanent set. Successive permanent set. Eemarks.. Total. Per square inch. Pound*. 200 1,000 2,000 4,000 6,000 7,000 8,000 8,400 8,600 8,800 9, 000 9,200 9,400 9,600 9,800 10,000 10, 200 10,400 10, 600 10, 800 11,000 11,400 11, 800 12,200 12,600 13, 000 17,300 Pound*. 1,000 5,000 10, 000 20, 000 30, 000 35, 000 40, 000 42, 000 43, 000 44,000 45, 000 46, 000 47, 000 48, 000 49, 000 50,000 51,000 52,000 53,000 64,000 55,000 57, 000 50,000 61, 000 63, 000 65,000 86,600 Inch. 0. . 000200 .000500 . 000850 .001150 . 001350 . 001450 .001500 . 001550 .001550 .001600 . 001600 . 001650 .001700 .001700 . 001750 .001800 . 001900 .002150 .003200 .005900 .010000 . 012350 . 014750 . 017150 . 019900 Inch. 0. .000200 .000300 . 000350 .000300 . 000200 .000100 .000050 .OOOOSO 0. .000050 0. .000050 .000050 0. , . 000050 .000050 .000100 .000250 . 0010^0 .002700 .004100 .002350 .002400 . 002400 .002750 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. .000050 .000050 .000100 .000050 " ' General summary. Tensile strengtli per square inoh of original section pounds.. 86,500 Elastic limit per square inoli of original section do... 52, OOo Elongation per inon after rupture inch.. 0.2600 Elongation per inch nnder strain at elastic limit So... .001900 Beduotion in diameter at point of rupture , do... .125 Beductlouinareaafterrupture, per oentum of original section 43.3 Position of rupture ,. ' 1".15 from neck Character of broken surface .~. silky, serrated I!longatio]iofiiioh8eotioiis......«n........... ".24,* ".28* 24 3.2-INCH STEEL B. L. RIFLES. No. 3822. Marks, ^^=;5 Diameter, ".505. Sectional area, ,20 square inch. Ganged length, 2". Applied loads. Elongation per inch. Snccessive elongation per inch. Permanent set. Snccessive permanent set. Bemarks. Total. Per square inch. Fowndg. 200 1,000 , 2,000 4,000 6,000 7,000 8,000 ' 8,400 , 8,600 8,800 9,000 9,200 9,400 9,800 10, 200 10, COO 11, 000 11,400 16,620 Founds. . 1,000 5,000 10, 000 20, 000 30, 000 35, 000 40, 000 42, 000 43, 000 44,000 45,000 46, 000 47, 000 49, 000 51, 000 53, 000 55, OOO 57, 000 83,100 Inch. 0. .000100 .000350 .000600 .000950 . OOUOO . 001350 .001400 .001450 . 001500 .003250 .005250 . 006750 .008200 . 010350 . 012500 -.014500 . 016750 Inch. 0. .000100 . 000250 . 000250 . 000350 . 000150 . 030250 .000050 .000050 .000050 .001750 . 002000 .001650 .001450 .002150 . 002150 .002000 . 002250 Inch. 0. 0. Inch. ■ 0. Initial load. Elastic limit. Tensile strength. 0. ,0. General summary. ^Tensile strength per eqnare inch of original section pounds.. Elastiolimit per sqnareinchof original section do... Elongation per inch after rupture! - inch.. Elongation per inch under strain at elastic limit do... Ecductionin diameter at point of rapture do... Reduction in area after rupture, per centum of original section Position of ruptqre 1" from neck Character of broken snrface silky, serrated Elongation of inch sections ".18, ".27' 83, 100 44, 000 0.225 001500 .105 87.1 3.2-INCH STEEL B. L, RIFLES. No. 3823. Mark8,^?fJ Diameter, ".505. Sectional area, .20 square inoh. Gauged length, 2". 25 Applied loads. EloDgatloxi per inch. Suocea'aive elonfration per inclx. Permanent set. Sncoesslve permanent set. Bemarks. Total. Per square inch. Fowndt. 200 1,000 2,000 4,000 6,000 7,000 8,000 8,400 8,600 8,800 9,000 9,200 9,400 9,600 9,800 10, 200 10, 600 11, 000 11, 400 11, 800 17,130 Founda. 1,000 5,000 10, 000 20, 000 30, 000 35, 000 40, 000 42, 000 ' 43, 000 44,000 45,000 46, OOO 47, 000 48, 000 49, 000 51, 000 53, 000 59, 000 57, 000 59, 000 85, 650 Inch. 0. .000150 .000450 .000850 .001050 .001300 .001400 .001450 .OOISOO .001900 . 001550 .001800 . 0037fi0 .003750 . 004760 .007260 . 009000 .011750 . 014000 .015600 Inch. 0. - ; .000150 .000300" . 000400 . 000200 . 000250 . 000100 . 000050 .000050 0. .000050 . 000050 . . 00U50 .001000 .001000 . 002500 . 001750 . 002750 . 002350 .001600 Inch. 0. 0- Inch. 0. Initial load. ' Mastic limit. Tensile strength. 0. .000050 . 000050 ' General summary. Tensile strength per square inch of original section pounds.. 85,650 Elastic limit per square inch of original section do... \ 46,000 Elongation per inch after rupture ; inch.. . 0, 2500 Elongation per inch under strain at elastic limit V , do... * .0016 deduction ii^ diameter at point of rapture , do... .125 Eeduction. in area after rupture, per centum of original section ■,..-. 43. 3 Position of rupture t 1". 28 from nect Character of broken surface silky, serrated Elongation of inoh sections "28% ".22* 2& 3.2-INCH STEEL B. L. EIFLES. IjTo. 3935. Marks, l^S Diameter, ",505. Sectional area, .20 square inch. Gauged length, 2". Applied loads. Elongation per inch. Succesaive elongation per inch. Permanent set. Snooessive permanent set. Eemarks. TotaL Per square inch. Pounds. 200 1,000 2,000 4,000 6,000 7,000 8,000 8,400 8,600 8,800 9,000 9,200 9,600 10, 000 10,400 10,800 11, 200 16,500 Pounds. 1,000 6,000. 10, 000 20, 000 30,000 33,000 40, 000 42,000 43, 000 44, 000 43, 000 46, 000 48,000 50, 000 , 52, 000 54,000 56, 000 82,500 Inch. 0. .000100 .000250 . 000600 . 000930 . 001200 .001350 .001400 . 001450 .001950 .005000 .005850 .008000 .010000 .012250 . 014400 .016650 Inch. 0. .000100 . 000130 .000350 .000350 . 000250 .000150 .000050 . 000050 . 000500 .003050 . 000850 .002150 . 002000 .002250 .002150 . 002250 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. 0. .000050 .000050 General summary. Tensile strength per sqaare inch of original section pounds.. 82,500 Elastic limit per square inch of oiiginal section do... 43,000; Elongation per inch after rupture inch . . 0. 1900 Elongation per inch under strain at elastic limit i ...do... .001450 Keduction in diameter at point of rupture do... . 105 IRedactionin area after rapture, per centum of or;iginal section - 37.1 Position of rupture at middle of stem Characte'r of broken surface sliky SlODgation o| inch sections , , , ^.-".23, ^'.15 3.2-INCH STEEL B. L. KIFLES. Ho. 3936. 27 Marks, ^Jff^ Diameter, ".505. Sectional area, .20 square inch. Gauged length, 2". Applied loads. Blongation per inoli. Successive elongation per inch. Permanent set. Soccessive permanent "Set. Eemarks. Total. Per square inoii. Pound*. 200 1,000 2,000 - 4, 000 6,000 7,000 8,000 8,400 8,600 8,800 9,000 9,400 9,800 10,200 10, 600 11,000 17,200 Pmmila. 1,000 5,000 10,000 20,000 30, 000 35, 000 40, 000 42, 000 -43,000 44, 000 45, 000 47, 000 . 49,000 , 51, 000 53, 000 65,000 ■ 86,000 Inch. 0. .000100 . 000300 . 000600 . 001000 .001150 . 001300 .001400 . 002400 .002900 .003500 .006250 .007900 .010050 .012050 . 013900 Inch. 0. .000100 .000200 . 000300 .000400 . 000150 . 000150 . 000100 . 001000 . 000500 . 000600 .002750 .001650 .002150 . 002000 ■ .001850 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. 0. 0. ~ Gtmeral summary, -Tensile Btrength per square inch, of original ^section pounds.. 86,000 plastic limit per square inch of original section .^ do... 42,000 Elongation per inch after rupture ...inch.. 0. 2400 JBlonga^on per inch under strain at elastic limit do... . 001400 deduction in diameter at point of rupture - do... .115 Keductionin area after rupture, per centum of original section 40-3 Position of rupture , ".60 from neck Character of broken surface silky Elongation of inch sections ........•,, .....,..,......,».., .^.,,...".33% ".15 28 3.2-INCH STEEL B. L. RIFLES. No. 3849. Marks, |M Diameter, ".505. Sectional area, .20 square inch. i&auged length, 2". Applied loads. Successive elongation per inch. Permanent set. Successive permanent set. Bemarks. Total. Per BqtLdj'e inch. per luch. Povinds. 200 1,000 2,000 4,000 6,000 7,000 8,000 8,400 8,600 8,800 9,000 9,200 9,400 9,600 10, 600 10,400 10, 800 11, 200 11,600 17,210 Poimds. 1,000 5,000 10, 000 20,000 30,000 35, 000 40, 000 42, 000 43, 000 44,000 45, 000 46, 000 47,000 48, 000 60,000 62, 000 64, 000 56,000 58,000 86,050 ItwK. 0. .000050 . 000300 . 000550 .001000 . 001150 .001450 . 001500 .001500 .001550 . 001600 .001800 .002500 .004260 .005500 . 008600 .011500 . 013250 .016000 Inch. 0. . 000050 . 000260 . 000250 . 000450 . 000150 . 000300 ' .000050 0. . 000060 . 000060 . 000200 . 000700 : 001750 .001260 . 003000 . 003000 .001750 . 002760 iTich, 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. 0. . 000050 . 000050 G&neral summary. Tensile strengtli per square incli of original section «...,ponnds.. 86, 050 Elastic limit per square inch of original section do 45,000 Elongation per inch after rupture inch . _ 0. 2250 Elongation i.er inch under strain at elastic limit.. do 003600 Eeduction in diameter at point of rupture .-.- do 125' Eeduction in area after rupture, per centum oi original section ^ 46. 3 Position of ruptare - 1" from neck Character of broken ^urfaoe silky Elongation of inch seotions i^ ".13, ".32* 3.2-INCH STEEL B. L, RIFLES. ' Fo. 3850. 20 Diameter, ".605. Sectional area, .20 square inch. Gauged length, 2". Applied loads. Elongation per inch. Sncoesaive elongation per inoh. Permanent set. Snocessive permanent set. Eemarks. Total. Per square Inoh. Pounds. 200 - 1,000 2,000 4,000 6,000 7,000 8,-000 - 8,400 8,600 8,800 9,000 9,200 9,400 9,600 10, 000 10,400 10,800 11,200 11, 600 16,460 Pounds. 1,000 5,000 10, 000 20, 000 30, 000 35, 000 40, 000 42, 000 43,000 44,000 45,000 46,000 47, 000 48,000 60, 000 62, 000 54,000 56, 000 58,000 82,300 Inch. 0. . 000100 .000250 .000600 .000900 .001100 .001300 . 001400 .001400 . U01450 .001600 . 004600 . 006400 . 007600 . 009500 . 012000 .013500 . 016550 .018750 Inch. 0. .000100 .000150 . 000350 . 000300 . 000200 .000200 .000100 0. . 000050 .000050 .003100 .001800 , 001200 .001900 . 002500 .001500 . 003050 .002200 1 Incli. 0. , 0. Inch. 0. Initialload. Elastic limit Tensile strength. 0. 0. G-eneral summary. TenBile strength per square inch of originatseotion pounds.. 82,300 Elastio limit per square inoli of original section — do... 45,000 Elongation per inch, after raptnre inch.. 0. 2450 Elongation per inch under strain at elasticJimit do... . 001500 ' llednction in diameter at point of rupture do... -135 Keduction In area after raptnre, per centum of original section 46.2 PoaitioD of rapture at middle of stem , Character of broken, surface ^ silky ' Elongatioxi of iuoh Bections „... ".25*/'.24* 30 3.2-INCH STEEL B. L. EIFLES. No. 3851. Marks, gf«^ Diameter, ".505. Sectional area, .20 square inch. Ganged length, 2". Applied loada. Elongation per incii. SucoeBsive elongation per incli. Permanent set. Sncoessire permanent set. Bernards. Total. Per square Incli. Pounds. 200 1,000 2,000 4,000 - 6,000 7,000 8,000 8,400 8,600 ^ 8,800 9,000 9,200 9,400 9,600 9,800 10, 000 10, 200 10,400 10, 600 11, 000 11,400 11,800 12, 200 12,600 18, 310 Pounds. 1,000 5,000 10, 000 20,000 30, 000 35, 000 40, 000 42, 000 43, 000 44,000 45, 000 46, 000 47,000 48, 000 49, 000 50, 000 51, 000 52, 000 53, 000 65, 000 57, 000 59, 000 61,000 63, 000 91,550 Inch. 0. .000100 . 000250 . 000600 .000950 . 001150 . 001360 .001400 . 001450 .001550 . 001600 . 001600 .001660 . 001660 .001700 .001700 .002050 .004760 . 006600 .008100 . U09760 . 011600 .013750 .015500 Inch. 0. .000100 .000150 . 000350 . 000350 . 000200 . 000200 . 000050 . 000050 . 000100 . 000050 0. . 000060 0. .000050 0. .000350 .002700 . 000850 . 002500 . 001650 . 001750 . 002250 .001750 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. 0. 0. ■ Creneral summary. Tensile strength, per square inch, of original section .pounds . . 91, 550 Elastic limit per square inch of original section do... 50,000 - Elongation per inch after rupture inch. , 0. 2100 Elongation per inch under strain at elastic limit do... .001700 Beduction in diameter at point of mpture 115 Redaction in area after rupture, per centum of original section 40. 3 _ Position of rupture , ".65 from neck Ch^:aoter of broken surface - -■ silky Blongatioii of inoh sections « , i ".12, ''.Sd*- 3.2-INCH STEEL B. L. KIFLES. JSo. 3852. 31 Marks, gf^^ Diameter, ".505. Sectional area, .20 square inch. Gauged length, 2". Applied loads. ' Elongatloii per inch. Successive elongation per inch. Permanent set. Successive permanent set. Bemarlis. Total. Per sqnare inch. Poundt. 200 1,000 2,000 4,000 6,000 7,000 8,000 8,400 8,600 8,800 9,000 9,200 9,400 9,600 9,800 10, 000 10, 200 10, 400 10, 600 11, 000 11, 400 11, 800 12, 200 12, 800 18, 110 Pounds. 1,000 5,000 10,000 20, 000 3p, 000 35, 000 40, 000 42, 000 43, 000 44,000 45,000 46,000 47,000 48,000 49,000 50, 000 51, 000 62, 000 53, 000 65,000 57, 000 59, 000 61, 000 63, 000 90,550 Inch. 0. .000100 . 000250 . 000550 . 000900 . 001100 .001300 .001350 . 001400 . 001460 .001600 .001600 .001650 . 001650 .001600 .001600 . 001850 .004000 . 006500 .007600 009600 . 011750 . 013000 . 016000 Inch. 0. .000100 .000150 . 000300 . 000360 .000200 .000200 . 000060 .000050 . 000050 .000060 0. .000060 0. . 000050 0. . 000260 .002160 . 001500 .002100 . 002000 . 002150 .001250 . 002000 Inch. 0. 0. Inch. 0. Inltialload. Elastic limit. ^ Tensile strength. , 0. 0. « General summary, Tenaile strength per square uLcli of original section pounds^. 90,550 Elastic limit per square inch of original section do... 50,000 Elongation per inch, after rupture., i inch.. 0.2200 Elongation per inch under strain at elastic limit. --. do... ,001600 Kednctionin disbmeter at point of rupture do... .135 Beduction in area after rapture, per centum of original section 46. 2 Position of rapture ....".80 from neck Character of broken surfaoe ........... : silky Elongation of inch aeotioiiA ".XX,".^*' 32 3.2-lNCH STEEL B. L. EIl'LES. 1^0.3932, Marks, ^i^^^ ' Diameter, ".505. Sectional area, .20 square inch. Gauged length, 2". Applied loada. Elongation per inch. Successive elongation per inch. Permanent set. Saccessive permanent set. Eemarks. Total. Per square inch. Pounds. 200 1,000 3,000 4,000 6,000 7,000 8,000 8,400 8,600 8,800 9,000 9, 200 9,400 9,600 9,800 10, 000 10, 200 10, 400 10, 600 11, 000 11,400 11, 800 , 12,200 12,600 17, 980 Pounds. 1,000 6,000 10, 000 20, 000 30, 000 35, 000 40, 000 42,000 43, 000 44,000 45, 000 > 46, 000 47, 000 48, 000 49, 000 50, 000 61, 000 62, 000 ^3, 000 65, 000 67, 000 69, 000 61,000 63, 000 89, 900 Inch. 0. .000100 .000300 . 000700 . 001050 . 001200 . 001450 . 001600 . 001550 . 001600 . 001600 . 001650 . 061700 . 001760 .001760 .001850 . 002050 . 003200 . 006000 . 007360 .009850 -.011750 . 013900 . 015850 Inch. 0. . OOOIOO . 000200 .000400 .000360 . 000160 .000260 . 000060 . 000050 . 000050 0. .000050 . 000050 . 000050 0. .000100 . 000200 .001150 .001800 . 002350 .002600 . 001900 .002160 .001950 I7ich. 0. 0. Inch. 0. Initial load. Blastio limit. Tensile strength. ^ 0. .000100 .000100 General summary. Tensile strengtli per square inch of original section ponudsl. 89,900 Elasticlimit per square incli of original' section do... 50,000 Elongation per iucn after rupture — iDch.. 0.2300 Elongation per inch under strain at elastic limit - do... .001850 Eeduction in diameter at point of rapture do... .125 Eeduction in area after rapture, per centum of original section 43.3 Position of rupture .".65 &om neck Character of broken surface silky Elongation of inch sectionB... «.....«*•...,.•... „".12/^84* 3.2-INCH STEEL B. L. EIPLES. Ko. 3815. 33 Marks, ^^^"^ Diameter, ".505. Sectional area, .20 square inch. Gauged length, 2". Applied loads.. Sn ocessi ve elongation per inch. Foimonent set. Suooessive permanent set. ■ Bemarks. Total.,^ Per sqnare incli. perincli. Poundi. . 200 1. 000 , 2,000 4, 000 6,000 8,000 9,200 9,400 9,600 9,800 10, 000 10, 200 10,400 ID, 600 11,000 11,400 11,800 12, 200 12, 60O -18,920 PimnOx. 1,000 5,000 10,000 20, 000 30,000 40, 000 46, 000 47, 000 48, 000 49, 000 50, 000 51,000 52, 000 53, 000 55, 000 57,000 59, 000 61,000 63,000 94,600 0. .000050 .000250 . 000350 . 001000 .001350 .001550 . 001550 . 001600 . 001650 . 001750 .001950 .002600 .003700 . 005900 .007660 . 009900 . 011550 . . 013400 Indh. , 0. .000050 .000200 . 000400 .000350 . 000350 . 000200 0. . 000050 .000050 . 000100 .000200 . 000650 .001100 . 002200 .001750 . 002250 .001650 . 001850 inch. 0. 0. Inch. 0. Initial load. Elastic limit. TensUe strength. 0. .000050 - .ooooso General summary. Tensile strength per sqnare inch of oHcioal section pounds . . 94, 600 Elastic limit per square inch of original section. do... 50,000 Slongation per IqcLl after rupture inch.. 0.2500 Elongation per inch under strain at elastic limit do... .001750 Keductioniu diameter at point of raptare do... .135 Kedaction in area after rupture, per centum of original section !. 46; 2 Position of rupture ". 90 from neck • Character of broken surface silky, trace of granulation Elongation of inch sections ",di>*i",16 H. Ex. 166 3 34 3.2-INCH STEEL B. L. EIFLES. No. 3940. Marks, 1^^^ Diameter, ".505. Sectional area, ".20 square inch. Gauged length, 2". Applied loads. Elongation per inch. Sncoessive elongation per inch. Permanent set. Sucoesaive permanent set. BemarkB. Total. Per sqnare iDoh.- Pounda. 200 1,000 2,000 4, 000 6,000 7,000 8,000 8,400 ' 8,600 8,800 9,000 9,200 9,400 9,800 10, 200 10, 600 11, 000 11, 400 16, 690 Foundt, 1,000 6,000 10,000 20, 000 30, 000 35, 000 40, 000 42, 000 43, 000 44,000 45, 000 46,000 47, 000 49, 000 61,000 53, 000 55,000 67, 000 83,450 Inch. 0, .000150 .000450 . 000950 .001300 .001600 .001650 .001700 .001700 .001800 . 002050 .004050 . 005550 . 008000 .011060 .012250 .014550 . 016900 Inch. 0. . 000150 . 000300 . 000500 . 000360 .000200 .000150 .000050 0. .000100 . 000250 . 002000 . 001500 .002450 .003060 .001200 .002300 .002350 Inch. 0. 0. Inch. 0. Initial load. Blastio limit. Tensile strengtb. 0. 0. General summary. Tensile strength per sqnare mch of original seotion ponnds.. 83,450 Jllastio limit per square inch of original section , .do... 44, OCO Elongation per inch after rupture - ^ inch,. 0.2500 Elongation per inch under strain at elastic limit do... ,001800 Reduction in diameter at point of rupture -. 1 do... .1250 Eedaction in area after rupture, per centum of original section 43. 3 Position of rupture 1" from neck Character of broken surface - - .-... silky - Mongationofinohaeotiozis , ".17, ".33* 8.2-lNCH STEEL B. L. KIFLES. 35 Nq. 3934. Marks, »^^, 5 Diameter, ".505. Sectional area, .20 square inch. Gauged length, 2". Applied loads. Sncoessiye elongation per inch. Permanent set. Successive permanent set. Eemarks. Total. Per square incu; per inch. Pound*. 200 1,000 2,000 4,000 6,000 7,000 8,000 8,400 8,600 8,800 9, 000 - 9,200 9,400 9,600 9,800 10, 000 10, 400 . 10,800 11,200 11,600 12,000 18,010 Foundt. 1,000 5,000 10,000 20, 000 30,000 36, 000 40,000 42,000 43, 000 44, 000 46, 000 46,000 47, 000 48,000 49,000 50,000 52, 000 54,000 66,000 68,000 60,000 80, 050 Inch. 0. .000100 .000250 .000650 .001060 .001260 .001360 .001400 .001450 .001450 .001500 .001600 .001650 .001700 .002600 .004250 .006350 .008100 . 009900 .011760 .013100 Inch. 0. .000100 . 000150 .000400 .000400 .000200 . . 000100 . 000050 .000060 0. .000050 0. .000050 .000150 . OOUOO .001650 , 002100 .001750 .001800 .001850 .001350 Inch. 0. 0. Inch, 0. Initial load. Elastic limit. TensUe strength. 0. 0. General summa/i^y. Tensile strengtli per square inoh of original section pounds.. 90,050 Elastic limit per square inch of original section do... 47,000 Elongation per inch after rapture ^ inch . . 0. 2000 Elongation per inch under strain at elastic limit do... .001550 deduction in diameter at point of rupture ,. , do... .115 Heduotioninareaafter rapture, per ceutum of original section.... .., 40. 3 Position of rnpture 1".00 from neck Character of broken surf ace '. silky Elongation of inch seotions ^ ".27*, ".13 36 3.2-INCH STEEL B. L. EIFLES. No. 3970. Marks, ^l^/^ Diameter, ".505. Sectional area, .20 square inch. Gauged lengtli, 2". Applied loads. Elongation per inch. Successive elongation per incli. Permanent set. Successive permanent set. Bemarkg. Total. Per sgnare , inoh.' Pounds. 200 i,ood 2,000 4,000 6,000 7,000 8,000 8,400 8,600 8,800 9,000 9,400 9,800 10,200 10, 600 11, 000 16, 830 •Pounds. 1,.000 5,000 ■ 10, 000 20, 000 30,000 36, 000 40, 000 . 42,000 43, 000 , 44, 000 45,000 47, 000 • 49,000 51,000 53, 000 55,000 84,150 Inch, 0. .000100 .000300 .000550 . 001000 . 001160 . 001400 . 001450 . 002600 .003200 , .006500 .007400 .009500 , . 011500 .013500 . 015350 Inch. 0. .000100 ^ .000200 . 000250 . 000450 . 000150 . 000250 . 000050 . 001050 . 000700 . 002300 .001900 . 002100 .002000 .002000 . 001850 IncK 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strengtii. 0. 0. . General summary. Tensile strength per square inch of original section pounds.. Elastic limit per square inch of original section do... Elongation per inch aftermptnre inch... Elongation per inch under strain at elasticlimit do. .. Keduction of diameter at point of rupture do... Beductionin area after rupture, per centum of original section Fositiou of rupture ".60 from neck Character of broken surface silky, serrated; granular'iu part at the circumference Elongation of inch Beotious .....".1V'<31* 84,150 42. 000 0. 2150 001450 .105 37.1 S.2-INCE[ STEEL B. L. EIPLES. 37 No. 3971. Marks, ^1^;^ Diameter, ".505. Sectional area, .20 square inch. Gauged leugth, 2". Applied loads. Elongation per inoh. SuccessiTe elongation per inch. Permanent set. Snooessive permanent set. Eemarkfl. Total. Per square incn. Pounds. 200 1,000 2,000 4,000 6,000 7,000 8,000 8,400 8,600 8, 800 9,000 9,400 9,800 10,200 10, 600 . 11,000 16,810 Pounds. 1,000 5,000 10, 000 20, 000 30,000 35, 000 40,000 42,000 43, 000 44, -000 45,000' 47,000 49, 000 51, 000 53,000 55, 000 84,050 Inch. 0. .000100 . 000350 . 000600 . 000900 .001050 .001250 .001400 . .001600 . 003500 . 004250 .000500 . 008250 . 010250 .012500 . 014350 Inch. 0. . 000100 . 000250 . 000250 . 000300 .000150 .000200 .000150 . 000200 . 001900 . 000750 .002250 . 001750 .002000 .002250 . 001850 Intsh. 0. 0. Inch. 0. Initialload. ElasticJimit. Tensile strength. 0. 0. ijr&neral summary, Tensilfl strength per square inob of original section pounds . . 81, 050 Elastic limit per SQuare inoh of original section -.--.. do.-. 42,000 Elongation per inon after rupture inch.. 0.1950 Elongation per inoh under strain at elastic limit do... .001400 KeductioQ in diameter at point of rapture do... .105 Bednction in area after rapture, per centum of original section 37.1 Position of rapture ".60 from neck Character of broken surface silky ; serrated ; granular in part at circumference Elongation of incliseotioas ''.27% ".12 38 S2.-INCri STEEL B. L. KIFLES. Ko. 3972. Marks, 15;°^ Diameter, ".605. Sectioiial area, .20 square inch. Gauged length, 2". Applied loads. Elongation per inch. SaccessiTe elongation per inch. Fermanent set. SncoessiTO permanent set. Semarks. ' Total. ' Per square inch. Pounds. 200 1,000 ' 2^000 4,000 6,000 7,000 , 8, 000 8,400 8,600 8,800 9,000 9,200 9,600 10, 000 10, 400 10, 800 11, 200 16, J90 Pounds. 1,000 6, 000 10, 000 20, 000 30, 000 36, 000 40, 000 42,000 43, 000 , 44, OOO 45, 000 46, 000 48, 000 50, 000 52, 000 64, 000 56, 000 80, 950 Inch. 0. .000100 .000350 .000000 . 001000 .001150 „ .001400 .001450 . 001500 .002400 .005350 . 007260 . 009600 . 011900 .014000 . 016400 .010000 iTWh. 0. . 000100 .000250 . 000260 . 000400 . 000150 .000250 . 000050 . 000050 . 000900 .002950 .001900 . 002350 . 002300 .002100 . 002400 .002600 Inch. 0. 0. Inch. 0. Initial load. Elastio limit. Tensile strength. 0. General summary. Tensile strength, per aqaare inoh of original section poanda.. 80,950 -Elastic limit per aqnareinch of original section do... 43,000 Elongation per inca after rupture ,% inch.. 0.2400 Elongation per inch under atrain at elastic limit do... . 001500 Reduction in diameter at point of rupture '. do... .115 Boductionin area after rupture, per centum of original section 40.3 Position of rupture 1". 10 from neck Character of broken surface ^ , silky ; serrated Elongation of inch sections , .••".18, ".30* 3.2-INCH STEBIi B. L. RIFLES. ISO. 3973. Marks, ^^"^ Diameter, ".505. Sectional area,. .20 square inch. Gauged length, 2". 39 Applied loads. Successive elongation per inch. Permanent set. Successive permanent set. Bemarks. Total. Per scmare inou. per inc^. Foundt. 200 1,000 2,000 4,000 6,000 7,000 8,000 8,400 8,600 8,800 9,000 9,400 9,800 10,200 10, 600 11,000 16, 020 Founds. 1,-000 5,000 10, 000 20, 000 30,000 39,000 40,000 42, 000 43,. 000 44, 000 45, 000 47, 000 49, 000 51,000 S3, 000 66, 000 80,100 Jneli. 0. . 000100 . 000400 .000650 . 001000 .001200 . 001400 .001450 .005850 .007100 . 008000 .010250 .012600 .014850 .017400 .020250 Inch. 0. .000100 .000300 . 000250 .000350 . 000200 . 000200 .000050 . 004400 .001250 . 00C900 .002250 . 002250 .002350 .002550 .002850 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strengtli. . 000050 . 000050 .000150 .000100 General summary, , \ Tensile strength per square inch of original section pounds.. 80,100 Elastic limit per square inch of origin^ section do... 42,000 Elongation per inch after rapture Inch.. 0.2450 Elongation per inch under strain at elastic limit do... .001450 ' deduction in diameter at point of rupture ' do... .125 deduction in area after rupture, per centum of original section 43.3 Position of rupture 1" from neck . Character of broken surface i. silky Elongation of inch seotiona «... '. ".33*, ".16 40 3.2-INCH STEEL B. L. KIFLES. Marks, l^^r^T Diameter, ".505. Sectionalarea, .20 square inch. Gauged length, "2. Ifo. 3933. Applied loads. Elongation per Incli, Successive elongation per inch. Permanent set. Suftceasive permanent set. Bemarks. Total. Per square - inch. Founds. 200 1,000 2,000 , 4,000 6,000 7,000 8,000 8,400 8,600 8,800 9,000 9,200 "9,400 9,600 9,800 . 10,000 10, 400 . 10,800 11, 200 11, 600 12, 000 17, 370 Founds. 1,000 5,000 10, 000 20, 000 80, 000 35,000 40, 000 42, 000 43, 000 44,000 46, 000 46, 000 47, 000 48,000 49, 000 60, 000 52,000 54, 000 56, 000 58,000 60, 000 86, 850 JncA. 0. . 000100 .000250 .000550 . 000950 ,001100 .001250 . 001350 .001400 . 001400 . 001450 . 001500 .001500 .002250 .002900 .004900 .007400 .009500 .011760 .013600 .015500 Inch. 0. .000100 . 000150 .000300 . 000400 . 000150 .000150 . 000100 .000050 0. . 000050 . 000050 0. .000750 .000650 .002000 . 002500 .002100 .002250 .001850 .001900 Inch. 0. 0. Incli. 0. Inltialjioad. Elastic limit. Tensile strength. . 000050 . 000050 . 000050 0. General summary,. Tensile strength per square inoh of original section ,_.. pounds.. 86,850 Elastic limit per square inch, of orjginarsection - do... 47,000 Elongation per inch after rupture inch.. 0.2000 Elongation per inch under strain at elastic linlit do... .001500 Keductionin diameter at point of rupture do... .085 Reduction in area after rupture, per centum of original section 30.7 Position of rupture ".60 from neck Character of broken surface, granular, radiating from a dull spot in the circumference ; opened cracks in surface of stem. Elo&gatioii of inch sectloiis.. ...«« ".28* ".12 3,2-INCH STEEL B. L. EIFLES. No. 3845. 41 Marks, li;«J Diameter, ".505. Sectioaal area, .20 square inch. Gauged length, 2". Applied loads. Eloneation per inch. Snooeasive elongation per inoh. Permanent set. Successive permanent set. Remarks. rrotai. Per square inou. Pounds. 200 1,000 2,000 4,000 6,000 7,000 8,000 8,400 8,600 8,800 9,000 9,200 9,400 9,600 10, 000 10,400 10, 800 11, 200 11,600 16,980 Pounds. 1,000 6,000 10,000 20,000 30,000 3S, 000 40 000 42, 000 43,000 44,000 46,000 46, 000 47, 0I>0 48,000 SO, 000 62, 000 54, 000 56, 000 68,000 84,900 Inch. 0. . 000100 . 000300 .000550 .001000 .001160 .001300 . 001360 .001400 .001460 .001500 . 002250 . 003400 . 003000 .007150 .009260 .011350 . 013350 .016600 Inch. 0. .000100 . 000200 .000260 .000460 .000160 .000150 . 000060 .000050 . 000050 .000050 . 000760 .001160 .001600 .002150 . 002100 .002100 .002000 .002260 Inch. 0. 0. Inch. 0. Initial load. Elasticlimit. Tensile strengtli. 0. . 000050 . 000050 General summary. Tensile strength per square inch of original section - pounds. . 84,900 ^Elastic limit per eqaareinch of original section do 45,000 Elongation per inoh after rupture inch.. 0.2500 Elongation per inch under strain at elastic limit do... .OOlSOi) Keduction in diameter at point of rupture do... . 155 Kednction in area after rupture, per centum of original section 51.9 Position of rupture - X" from neck Character of broken surface silky Elongation of inch sectiona : ".37% 'U3 42 3.2-lNCH STEEL B. L. EIFLES. No. 3825. Marks, ^^^^° Diameter, ".505. Sectional area, .20 square inch. Gauged length, 2". Applied loads. Blongatinn per inch. Successive elongation per inch. Permanent set. Successive permanent Bet. Bemarks. Total. Per square Incli. _ Pounds, 200 1,000 2,000 6,000 10, 000 12, 000 14,000 14, 200 14,400 14, 600 14.800 15, 000 15, 200 15, 600 16, 000 16,400 16, 800 17,200 26, 170 Pounds. 1,000 ■6,000 10,000 30, 000 60, 000 60, 000 70, 000 71,000 72, 000 73, 000 74,000 75, 000 76,000 78, 000 80,030 82,000 84,000 86,000 130, 850 Inch. 0. .000150 . 000400 .001000 .001650 .002050 .002400 . 002500 .002600 . 002700 .002900 . 003050 .003350 . 004000 . 004750 . 006850 . 006850 .008250 Inch. 0. . 000150 . 000250 .ooo6;o . 000650 . 000400 .000350 . .000100 . 000100 . 000100 . 000200 . 000150 . 000300 .000650 . 000750 . 001100 . 001000 . 001400 Inch. 0. 0. Inch. 0. Initial load. Elastic Umlt. Tensile strength. .000050 .000050 General summary. Tensile strength per sqnare incli of original Bectiou pounds.. 130,850 Elastic limit per square inch of original section .do... 73, 000 Elongation per incJi after rupture .-. inch.. 0.1450 Elongation per inch under strain at elastic limit do... .002700 Seduction in diameter at point of rupture do... .085 Keductionln area after rupture, per centum of original section 30.7 Position of rapture , /1".10 from neck. Character of broken surface granular, 557 per cent.; gllky, 4:5 per cent Elongation of inch sections 'M8/M1 3.2-INCH STEEL B. L. KIPLE8, Fo. 3937. 43 Marks, ^^go Diameter, ".505. Sectional area, .20 square inch. Gauged length, 2". . Applied loads. Bloneation per inch. Snccessive elongation per incli. Permanent set. Soceessive permanent set. Kemarks. .Total. Per sqnare inoli. ■ Pjmndi. 200 - 1, 000 2,000 6,000 10,000 12,000 14, 000 14,200 14,400 14,600 14,800 15, 000 15,200 16,400 15,800 16,200 16, 600 17,000 17,400 ' 26,420 PowiOt. 1,000 6,000 10, 000 30,000 60, 000 60, 000 70, 000 71,000 72, 000 73, 000 74,000 76, 000 76, 000 77, 000 79, 000 81,000 83,000 85, 000 87, 000 132, 100 liuh. 0. .000100 . 000350 .001100 .001760 .002100 .002460 .002560 . 002600 . 002650 .002750 .002900 . 003100 . 003400 . 004050 .004950 . 006050 . 007400 .008450 Inch. 0. . 000100 . 000250 .000750 .000650 . 000350 .000350 .000100 . 000050 . 000050 .000100 . 000150 .000200 .000300 .000650 . 000900 . 001100 . 001350 .001050 Inch. 0. 0. Inch. 0. Initial load. Blastio limit. Tensile strength. . 0. ..000056 .000050 "^ Genfij'al summary. Tensile atrength per square incli of orizinal section ^....ponn^s.. 132,300 Elastic limit per square incli of original section do... 74,000 Elongation per incti after rupture , inch . . 0. 1400 Elongation per inch under strain at elastic limit do... .002750 Bednctionin diameter at point of rupture do... .085 lEeductionin area after rupture, per centun: of original section 30. 7' Position of rupture --- '....: ".80 froTuneck Character of broken surface. .« granular; silky center I31ongatiouofiuoh8«otioQa ".20*, ".OS 44 3.2-INCH STEEL B. L. EIFLES. No, 3938. Marks, ^skgo Diameter, " .505. Sectional area, .20 square inch. Gauged length, 2". Applied loade. ToMl. Per square inon. Elongation per inch. SucceBsive elongation per inch. Permanent set. SnccesBive permanent set. Bemarks. Pounds. 200 1,000 2,000 6,000 10, 000 12, 000 14, 000 14,200 14, 400 14,600 14, 800 15, 000 16, 20O 15, 400 15, 600 15,800 16, 000 16.200 16, 600 17, 000 17, 400 17, 800 18, 200 26, 770 Pounds, 1,000 5,000 10, 000 30, 000 60, 000 60, 000 70, 000 71, 000 72, 000 73, 000 74, 000 76, 000 76, 000 77, COO 78, 000 79, 000 80, 000 81, 000 83, 000 85, 000 87, 000 89, 000 91, 000 133, 350 Inch, 0. . 000100 . 000300 .000900 .001600 .001950 . 002300 . 002350 .002400 . 002400 . 002450 . 002500 . 002550 . 002550 . 002600 . 002800 . 003000 .003250 .003800 . 005050 . 006500 . 007750 .008900 iTlch, 0. . 000100 . 000200 . 000600 . 000700 .0003.10 . 000350 .000050 . 000050 0. . 000050 . 000050 .000050 0. . 000050 . 000200 . 000200 .000250 . 000550 . 001250 . 001460 . 001250 .001150 Inch. Inch, Initial load. Elastic limit. Tensile strength. General summary. Tensile strength per square Inch of original section pounds.. 133,850 Elastic limit per square inch of original section do... 78,000 Elongation per inch after rapture inch.. 0". 1450 Elongation per inch under strain at elasticlimit — do...". 002600 Eeduction in diameter at point of rupture do... ".085 Keduction in area after rapture, per centnm of original section 30. 7 Position of rupture ".75 from neck Character of broken surface «......••«... ......grannlar; silky spot at oironmference Slongatioii of inoli sections... ............",22*, ".07 3.2-INCH STEEL B, L. RIFLES. 45 Ko. 3819. Marks, 82 B„^o Diameter, ''.505. Sectional area, .20 square inch. Gauged length, 2". ^Applied loads. Elongatiou per inoh. Sncoesaive elongation per inch. Permanent set. Successive permanent set. Bemarks. Total. Per aqnare inoh. Pounds. 200 1,000 2,000 6,000 10, 000 12, 000 14,000 14,200 14, 400 14,600 14,800 15,000 15,200 15,400 15,800 16,200 16, 600 17, 000 17, 400 25, 860 Pounds, 1,000 5,000 10, 000 30,000 50,000 60, 000 70,000 71, 000 72,000 73,000 74, 000 75, 000 76, 000 77,000 79, 000 81,000 83, 000 85, 000 87,000 129,300 Inch, 0. . OOCIOO .000250 .000950 . 001650 .001950 . 002400 .002450 .002500 .002600 . 002650 .002900 .003050 .003500 . 004500 . 005700 . 007500 . 008850 .009SS0 Inch, 0, .000100 . 000150 . 000700 . 000700 .000300 . 000450 .000050 .000050 .000100 .000050 . 000250 .000150 .000450 . 001000 . 001200 . 001800 . 001350 .001100 Inch. 0. 0. Inch, 0. Initial load. Elastic limit, Tensile strength. 0. 0. General summary. Tensile strength per square inch of OTieinalsectiok ponnda.. 129,300 Elasticlimltper square inch of original section do... 74,000 Elongation per inch after raptare inch. . 0. 1450 Elongation per inoh under strain at elastic Umit... .do... .002650 Kediiction in diameter at point of rupture do... .095 Beduction in area after rupture, per centum of original section.. 34,0 Position of rupture ■ ".80 from neck Character of broken surface silky, 40 per cent.; granular, 60 per cent. Elongation of inohseotiona ••.«•■>•••• ^ ".08|".20* 46 3.2-INCH STEEL B. L. EIFLES. No. 3870. Marks, 32 B« GO Diameter, ".605. Sectional area, .20 square inch. Gauged length, 2". Applied loads. Elongation per tncli. Saooessive elongation per inch. Permanent set. Snooesslve permanent set. Bemarls. Total. Per square inch. Poundi. 200 1.000 2,000 6,000 10,000 12,000' 14,000 14,200 14, 400 14,600 14, 800 15, 000 15, 200 • 15,400 15, 600 16,800 16,000 16.200 16,400 16,600 17,000 17,400 17,800 18,200 18,600 27,980 Powndt. 1,000 5,000 10, 000 30, 000 60,000 60, 000 70, 000 71, 000 72,000 73, 000 74,000 76, 000 76, 000 77, 000 78, 000 79, 000 80,000 81, 000 82, 000 - 83,000 85,000 87,000 89,000 91,000 93,000 139,800 Inch. 0. .000050 .000300 .000950 .001600 .001950 .002350 .002400 .002460 .002550 . 002560 .002550 . 002700 .002800 .002860 .002960 . 003050 .003260 - ,003450 . 003700 .004100 .005100 .006100 .007100 .008250 Inoh. 0. .000050 .000250 .000650 . 000650 .000350 .000400 .000050 .000050 .000060 . 000050 6. .000150 .000100 .000060 .000100 . 000100 .000200 . 000200 .000250 .000400 . 001000 .001000 . 001000 .001160 Inch. 0. 0. Inch. 0. Initial load. Elastic limit Tensile strength. 0. 0. Greneral summary. Tensile strength per sgnare inch of original section ...pounds.. £ia,8tio limit per square inch of original section .,..do.... Elongation per inch after rapture inch.. Elongation per inch under strain at elastic limit do... Beduction in diameter at point of rupture do... Eeductionin area after rupture, pec centum of original section...... Position of rapture ".40 from neck Character of broken surface giannlar; doll spot at oiicnmfeience £longationofin«li»eetioiu .....«..........«m ''.OS^'MS* 139, 900 80, 000 0. 1800 0030505 .05 i.5 8.2-INCH STEEL B. L. EIFLES. 47 Ko. 3878. Marks, '^f'^° Diameter, ".506. Sectional area, .20 square inch. Gauged length, 2". >. k AppUedloads, Elongation 'per inoh. Saccessive elongation per inch. Permanent set. SacceBsive permanent set. Bern arks. Total. Per square inch. Pounds. 200 1,000 2,000 6,000 10, 000 12, 000 14,000 14,200 14,400 14,800 15, 000 15,200 15, 400 16,600 15,800 16,000 16, 400 16, 800 17, 200 17,600 18, 000 27,280 Powadi. 1,000 5,000 10,000 30,000 60,000 60,000 70, 000 71,000 72,000 74,000 75,000 76, 000 77,000 78, 000 79, 000 80, 000 82,000 84, 000 . 86,000 88, 000 90, 000 130,400 Inch. 0. .000100 .000300 .001050 .001700 .002060 . 002400 .002460 . 002500 .002550 . 002600 . 002700 .002800 . 003000 .003250 .003560 . 004300 . 005200 . 006300 .007350 .008660 Jmcft. 0. . 000100 . 000200 .000750 . 000650 . 000350 .000350 .000060 . 000050 . 000050 .000060 .000100 .000100 .000200 . 000250 . 000300 .000750 . 000900 . 001100 . 001050 .001300 Zncft. 0. 0. Inch. Initial load. Elastic limit. Tensile strength. .000050 .000050 .000050 0. •■>■r•■--•■• General summary. Tensile strength per square inch of original section .« ..pounds.. 136,400 Elastic limit per square inch of original section ido... 77,000 Elongation per inch after rupture inob... 0.1400 Elongation per inch under strain at elastic limit ., ...do... .002800 Beduction in diameter at point of rupture do:.- .065 Keduction in area after rupture, per centum of original section 23. 9 Position of rupture - ".75 from neck CHaracter of broken surface ..« , granular; dull eccentric spo* Elongation of inch aeotions ..- ** ^08,".20t 48 3.2-INCH STEEL B. L. EIFLES. No. 3820. !E„GO T, M Marks, ^, „ Diameter, ''.505. Sectional area, 20 square inch. Gauged length, 2". Applied loads. Elongation per incli. SneCBSsive elongation per inch. Permanent set. SnccesslTe permanent set. Bemarks. Total. Per square inch. Povindt. 200 1,000 2,000 6,000 10, 000 12,000 14,000 14,200 14,400 14,600 15,000 15,400 45, 800 16,200 16, 600 25,810 Pmindg. 1,000 6,000 10,000 30,000 50, 000 60, 000 70,000 71,000 72, 000 73, 000 75, 000 77, 000 79, 000 81, 000 83,000 129, 050 Inch. 0. .000100 .000350 .001050 .001750 . 002100 .002950 .003250 .003500 .003760 .004600 .005650 . 006750 . 007700 .009000 Inch. 0. .000100- . 000250 .000700 . 000700 . 000350 .000850 .000300 .000250 .000250 . 000850 .001060 .001100 . 000950 .001300 Inch. 0. 0. Inch. 0. Initial load. Elastic limit (approxi- mate). Tensile strength. 0. .000500 . 000500 General summary. Tensile strength per square incli of original section pounds.. 129,050 Elastic limit per sqnare inch of original section (approximate) do . . . 70, 000 Elongation per inch after rnptnre , inch.. 0.1450 ^Elongation per inch under strain at elastiolimit do... .002950 Keductioniu diameter at point of rupture '. ....do... .075 IRednctionin area after rupture, pet centum of original section 27.4 Position of rupture ".95 from neck Character of hroken surface « granular; silky center Elongation of inch aectiona ".1(^/'.19* 3.2-lNCH STEEL B. L. RIFLES, 49 3.2-INCH STEEL B. L. RIFIES. Specific Geavitt ajsd Hardness op Tubes and Jackets. Nnm- berof rifle. Maika on specimen. Speciflo gravity. Hardness. 61 S6 66 68 75 51 56 61 68 71 32 Es, T B Es M 32Es, T BEjM 32EesT BE3M 32Et8T BEaM 31E,tT BE3M 32 Hgi J Hg liS. 32E5„J E3M 82Es,J E3M 32 Ess J KsM 32E,iJ E3M 7.8539 7.8655 7.8508 7.8544 7.8540 7.8516 7.8470 7. 8466 7.8457 7.8524 17.26 16.90 18. 58 16.82 15.36 19.29 16.81 ,17.81 17.81 18,98 TABULATION OF SPECIMMNS FROM ZM-INCH B. L. STEEL BIFLES. ITo.of test. Position in gun. 3866 -3931 3941 3884: 3885" 3942 3943 3849 3850 3851 3852 3932 3815 3940 3934 3970 nmi 3972 3973 3933 3845 3937 3938 3819 3870 3878 3820 IjOcatioQ of speci- mens) Tobeiro.54.. Tube No. 55.. Tube No. 66. ...do , ....do ...do ...do ...do ...do Tube No. 57- ,...do Tube No. 60. ...do , Tube No. 64. ...do -..do ...do Tube No. 66. ...do Tube No. 68. Tube No. 69. Tube No. 70. ...do ...do ...do Tube No. 71. Tube No. 73. Gas check . . ...do ...do Gas check No. 12. Gas check No. 61. ...do , Gas cbeckNo. 70. Middle. ...do... ..dp. ..do. ..do. ..do. ..do. ..do. ..do. ..do. ..do. ..do. ..do. ..do. ..do. ..do. ..do. -do. ..do. Elastic limit per square inch. .do. -do. .do. .do. .do. -do. .do. .do. .do. .do. .do. .do. -do. .do. -do. Pounds. 49, 000 47, 000 42, 000 »40, 000 45, 000 45, 000 49, 000 45, 000 62, OilO 44, 000 46, 000 43, 000 42, 000 45, 000 45, 000 60, 000 60, 000 50, 000 60, 000 44,000 47, 000 42,000 42,000 43, 000 42, 000 47,000 45, 000 73, 000 74, 000 78, 000 74, 000 80, 000 77, 000 70, 000 Tensile strength per square inch. Pov/nds. 86, 800 90, 600 81, 050 77, 100 80, 550 81, 060 87, 900 86, 700 86, 500 83, 100 85, 650 82, 500 86, 000 86, 050 83, 300 91, 550 90, 560 89, 900 94, 600 83, 450 90, 050 84,160 84,050 80, 960 80,100 86, 850 84,900 130, 850 132,100 133, 850 129, 300 139, 900 136, 400 129, 050 of area. Appearance of fracture. Per ct. Per et. 21.0 46.2 20.0 30.7 25.0 43.3 26.0 40.3 24.0 40.3 23.6 40.3 20.0 43.3 24.0 43.3 26. 43.3- 22.5 37.1 25.0 43.3 19.0 37.1 24.0 40.3 22.5 43.3 24.5 46.2 21.0 40.3 22.0 46.2 23.0 43.3 25.0 ' 46.2 26.0 43.3 20.0 40.3 21.6 37.1 19.5 37.1 24.0 40.3 24.5 43.3 20.0 30.7 25.0 61.9 14.6 30.7 14.0 30.7 14.5 30.7 14.0 34.0 18.5 20.5 . 14.0 23.9 14.5 27.4. Silky._ Granular, 60 per cent. ; silky serrated, 40 per cent. Silky. Do. Silky serrated. Do. Do. Do. Do. ' Do. Do. Do. Do. Do. Do. Do. Do. Do. Silky, trace of granula- tion. Do. Do. Silky serrated and gran- ular. , Do. Silky serrated. Do. Granulation radia ting from dull spot. Silky. Granular, 55 per cent. ; silky, 46 per cent. Granular, silky center. Granular, silky spot. Silky, 40 per cent.; gran- ular, 60 per cent, Grannlar,'vrith dull spot. Do. Granular, sir.i,y center. H. Ex. 165- • Below. 50 3.6-INCH B. L. RIFLES. 3.6 INCH B. L. BIFIE. Specimens feom Key King-. No. 3818. Marks, ^-"-^'if ^ Diameter, ".505. Sectional area, .20 square inch. Gauged length, 2". Applied loads. Eloneation per inch. Saccessive elongation per inch. Permanent set. Successive permanent set. Kemarks. Total. Per Hqaare inch. Pounds. 200 1,000 2,500 7,500 10.000 12, 100 12, 200 12, 400 12, flOO 12,800 13,200 13, 600 14,000 14,400 20, 620 Poimds. 1,000 5,000 10, 000 30, 000 50,000 60, 000 61, 000 62, 000 63, 000 64,000 ^ 66,000 68,000 70,000 72,000 103,100 Inch. 0. .000100 . 000300 .000900 . 001700 . 005750 . 006500 . 007400 .008400 .009200 . 010900 . 012300 .014300 .015850 Inch. 0. . 000100 . 000200 .000600 .000800 .00)050 .000750 .000900 . 001000 . 000800 . 001700 .001400 . 002000 . 001550 Inch. 0. 0. Inch. 0. Initial load. Xensile strength. . 003500 .003500 General summary. Xensile strength per square inch of original section pounds.. 103, 100 Xlongation per inch after rnptnro inch . . 0. 235 Beduction in diameter at point of raplure do . . . .126 Keduotion in area after rapture, per centum of original aoctlon 43 3 Position of rupture "-85 from iioclr Character of Drolfen surface flui', ailky Elongation of inch sections ".15, ".32* 84NCH STEEL B. L. RIFLES. SPECIMENS FROM TUBES AND JACKETS. 8-INCH STEEL B. L. EIPLES. No. 891. 53 Marks, IV, I Length, 5". Diameter, 1".0092. Sectional area, .80 square inch. Ganged length, 3". Applied loads. Comprea- sioD per inch. Successive compres- sion per inch. Permanent set. Successive perniaueut set. Kemarks. Total. Persquare inch. Povmia. 800 4 000 8,000 12, 000 16,000 20, 000 24,000 28, 000 31,200 32, 000 32,800 33. 600 34,400 35,200 36, 800 38,400 40,000 68,780 Pounds. 1,000 5,000 10, 000 15,000 20, 000 25, 000 30, 000 36, 000 39,000 40, OOO 41, 000 42, 000 43,000 44,000 46,000 48, 000 50, 000 85, 975 Inch. 0. .000100 . 000267 . 000400 . 000567 . 000767 . 000900 . 001100 . 001267 . 002600 .004400 . 005000 .005967 . 0OB600 . 008233 .009933 . 011833 Inch. 0. . 000100 . 000167 .000133 . 000107 . 000200 .000133 .000200 . 000167 .OOJSS.I .00. 800 . 000600 . 000967 .000033 .001633 .001700 . 001900 Inch, 0. 'Inch. 0. Initialload. Elastic limit. Ultimate strength. 0. . 001367 . 001367 Failed by triple flexure. 54 8-INCH STEEL B L. RIFLES. No. 889. Marks, |E^J Length, 5". Diameter, 1".0092. Sectional area, .80 square inch. Gauged length, 3". Applied loads. Compres- , sion per inch. Successive compres- sion per inch. Permanent set. Successive permanent set. Bemarks. Total. Per square inch. Pounds. 800 4,000 8,000 12, 000 16, 000 20, 000 24,000 28, 000 32, 000 36, 000 40,000 44, 000 44, 800 45, 600 46, 400 47, 200 48,000 49, 600 51, 200 52, 800 64, 400 56, 000 86,460 JPoundit. 1, 000 5,000 10, 000 15, 000 20, 000 25, 000 30, 000 35, 000 40, 000 45,000 SO, 000 55, 000 56, OOO 57, 000 58, 000 69, 000 60, 000 62, 000 64, 000 66, 000 68, 000 70, 000 108, 075 Inch. 0. . 000067 . 000233 .000367 . 000500 . 000667 . 000833 . 001000 . 001100 .001267 .001500 .001667 .001933 .002667 .003167 . 003833 . 004800 .006167 . 007667 .008967 .010400 . 011833 Inch. 0. . 000067 .000166 .000134 .000133 .000167 . 000160 . 000167 . 000100 . 000167 . 000233 .000167 . 000266 . 000734 .000500 . 000666 .000967 . 001367 . 001500 .001300 . 001433 .001433 Inch. 0. Inch. 0. Initial load. ' Dlastio limit. Ultimate strength. - 0. 0. ^ Failed by triple flexure. 8-INCH STEEL B. L. RIFLES. 55 Fo. 888. Marks, 1^,','^ Length, 5". Diametier, 1".0092. Sectional area, .80 square inch. Gauged length, 3". Applied loads. Compres- sion per inch. Successive compres- sion per inch. Permanent set. Successive permanent set. Hemarks. Total. Per square inch. Founds. 800 4,000 8,000 12, 000 16, 000 20, 000 24,000 28,000 32, 000 36, 000 36, 800 37, 600 38, 400 39,200 40, 000 41, 600 43, 200 44, 800 46,400 48, 000 76, 250 Founds. 1,000 5,000 10. 000 15, OOO 20, 000 25, 000 30, 000 35, 000 40, 000 45, OOO 46, 000 47, 000 48,000 49, 000 50,000 52, 000 54, 000 56, 000 68, 000 60, 000 95,310 Inch. 0. . 000133 . 000267 . 000400 . 000567 .000733 . 000900 ' .001067 . 001233 .001367 . 001433 . 001600 . 003767 . 004600 . 005100 . 006433 .008000 . 009400 . 011033 . 015167 Inch. 0. ■ . 000133 . 000134 .000133 . 000167 .000166 . 000167 .000167 .000166 . 000134 . 000066 . 000167 . 002167 .000833 . 000500 . 001333 .001567 . 001400 .001633 . 004134 Inch. 0. Inch. 0. Initial load. Elastic limit. Ultimate strength. . 000033 . 000033 . 000067 . 000034 Failed by triple flexure. 56 8-INCn STEEL B. L. RIFLES. - , F6.892, Marks, J ?;^' Length 5". Diameter, l".0092. Sectional area, .80 square incb. Gauged length, 3". Applied loads Compres- sion per Inch. Saccessive compres- sion per inch. Permanent set. Successive permanent set. Remarks. Total. Per square inoh. Pounds. 800 4,000 8,000 12, 000 16, 000 20,-000 24, 000 28, 000 32, 000 36, 000 , 40, 000 40, 800 41, 600 42, 400 43,200 44, 000 44, 800 46, 400 48,000 84, 600 J'ounds. 1,000 5,000 10, 000 IB, 000 20, 000 25, 000 30, 000 35, 000 40, 000 45,000 50, 000 51, 000 62, 000 63, 000 54,000 65, 000 56, 000 58, 000 60, 000 105, 750 Inch, 0. .000100 . 000233 . 000400 .000533 . 000667 . 000833 . 001000 . 001167 . 001333 . 001500 .001600 .001667 , 001833 . 002100 . 002567 . 002967 .001233 . 006000 Inch. 0. . 000100 . 000133 . 000167 .000133 . 000134 .000166 . 000167 . 000167 . 000166 .000167 . 000100 .000067 .000160 .000267 . 000467 .000400 . 001266 . 001767 Inch, 0. Inch. 0. Initial load. Elastic limit. Ultimate strength. ' 0. 0., Failed by triple flexure. 8-INCH STEEL B. L. RIFLES. No. 4259. 67 Marks, l^/^ Diameter, ".564. Sectional area, .25 square incli. Gauged, leugth 3". Applied loads. Elonga^tion per inoli. SaccessiTe elongation per inch. Permanent set. Snccessive permanent set. Remarks. Total. Per square lach. Foundi. 250 1,250 2,500 5,000 7,600 10,000 11, 000 11, 250 11, 600 11, 750 12, 000 12, 250 12, 500 12, 750 13,000 13,260 13, 500 13, 760 14,000 14, 600 16,000 15,500 16,000 16,600 23,670 Pounds. 1,000 5,000 10, 000 20, 000 30, 000 40, 000 44, 000 45, 000 46,000 47, 000 48, 000 49, 000 80, 000 51,000 52, 000 53, 000 54,000 55,;ooo 56, 000 58, 000 60, 000 ^ 62, 010 64,000 66, 000 94,680 Inch. 0. .000100 . 000300 . 000600 r000933 . 001267 .00)433 .001433 .001467 .001500 . 001667 .001600 . 001633 .001667 . 001700 . 001733 . 008700 .009267 .009933 .611600 .013233 .015000 . 017233 . 019000 Inch. 0. .000100 . 000200 . 000300 .000333 . 000334 .000160 .0. .000034 . 000083 . 000067 . 000033 .000033 . 000034 . 000033 . 000033 .006007 . 000567 . OOOOOO . 001607 . 001033 . 001707 .002233 .001767 Mch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. 0. 0. General summary. Tenaile strongtli per square incTi of original section pounds.. 94,680 Elastic limit per square inch of original section do. . . 53, 000 Elongation per inch after rupture inch.. .2100 Elongation, per inch under strain at elastic limit.... do.-. .001733 Keductionin diameter at point of rupture : do*.. .134 Seduction in area after rupture, per centum of original section 41. 9 Position of rupture ,.1" 60 from neck Character of hroken surface ^ - silky Elongation of inch sections ....",19.".34,* 'MO 58 8-INCH STEEL B. L. EIFLES. No. 4260. Marks, I^/m Diameter, ".564. Sectional area, .25 square inch. Gauged length, 3". Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. Successive permanent set. Bemarks. Total. Per sduare inch. Pounds. 250 1,250 2,600 5,000 7,500 10, 000 11, 000 11, 250 11, 500 11, 750 12, 000 12, 250 12, 500 12,750 . 13,000 13, 250 13,500 14, 000 14,600 15,000 15, 500 16,000 23, 210 Pounds. 1,000 5,000 10, 000 20, 000 30, 000 40, 000 44, 000 45, 000 46, 000 47, 000 48, 000 49, 000 50, 000 51, 000 52, OJO 53, 000 54,000 56,000 68, 000 60, 000 62, 000 64, 000 92, 840 Inch. 0. .000100 . 000300 .000633 . 000967 .001333 . 001467 .001500 . 001567 .00101 .001613 .001B67 .OOlTiO .001733 .008700 . 009367 .010167 .011733 .013600 . 015167 .017133 . 019167 Inch. 0. .000100 . 000200 . 000333 . 000334 .000366 . 000134 . 000033 .000067 . 000033 .000033 . 000034 .000033 . 001566 . 006967 . 000607 .000800 .001506 .001767 . 001667 .001966 . 002034 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. 0. 0. General summary. TeDSile strength per square inch of original section — ', pounds . . 92, 84 Elastic limit per square inch of original secliou do. . . 51, 000 Elongation per inch after rupture inch.. .2000 Elongation per inch under strain at elastic limit do... .001733 Keduction in diameter at point of rapture ^ do... . 134 ^Reduction in area after rupture, per cehtmn of original section 41. 9 Position of rupture V'.45 from neck Character of broken surface silky Elongation of inch sections ".13, "30,* ".17 8-IKCH STEEL B. L. EIFLES. 59 No. 890. Marks, l^';^ Length, 5". Diameter, l".O092. Sectional area, .80 square inch. Gauged length, 3". Applied loads. Compres- sion per inch. Sncoessive compres- sion per incn. Permanent set. Successive permiinent set. Eemarlis. ToW. Per square incli. Pounds. 800 4,000 8,000 12,000 16, 000 20, 000 24,000 28,000 32, 000 36,000 40, 000 40, 800 41, 600 42,400 43, 200 44, 000 44,800 46,400 48,000 82,260 Pounds. 1,000 5,000 10, 000 15, 000 20, 000 . 25, 000 ■ 30,000 35, 000 40, 000 45, 000 50,000 51, 000 52,000 53, 000 54, 000 55, 000 56, 000 58, 000 60, 000 102, 825 Inch. 0. . 000067 . 000233 .000367 .000533 . 000700 .000867 . 001033 .001167 .001333 .001533 . 001600 . 005333 . 006100 .006767 . 007267 .008067 .009267 .010787 Iiich. 0. .000067 .000166 .000134 .000166 . 000167 .000167 . 000186 .000134 .000168 . 000200 . 000007 . 003733 .000787 . 000067 . 000500 . 000800 . 001200 . 001500 Inch. 0. Inch. 0. Initial load. Elastic limit. Ultimate strength. 0. . 000033 . 000033 Failed by triple flexure. HARDNESS AND SPECIFIC GRAVITY. Marks. Hardness. Specific gravity. SEoAa MEiaM 21.64 15.20 20.03 20.47 18.38 20.70 22.64 21.40 17.99 7. 8573 7. 8639 7.8572 7. 8536 7.8598 7. 8560 7. 8496 7.8494 7.8625 8E3 1 B EgM 8E3J B E,oM 8E, A. ME, M 8E4T B EgM 811. .T B EeM 8EjD| E4M 8Ej A. M E.M SEjJ Bi EM 10-INGH WIRE-WOUND RIFLE. SPECIMENS PROM TUBE, JACKET, AND HOOPS. 61 ^ ^%: k IS; W^ 7 s CSI N L I T 1 10-lNCH WIEE-WOUND KIFLE. 63 No, 3958. Marks, ";^f/ Diameter, ".564., Sectional area, .25 square inch. Gauged length, 4". Applied loads. Elongation per inch. Sucoessiw elongation per mol. Permanent eet. ■ Sucoeasive permanent set. Bemarlis. Total. Per square inoli. Founds. 250 1,250 2,500 , 5,000 , 7,500 8,760 9,000 9,280 9,600 9, 750 10, 000 10, 250 10, 500 10, 750 11, 000 11, 600 12, 000 12, 600 13, 000 13, 600 14, 000 14, 500 15, 000 15, 500 16, 000 16, 500 17, 000 17, 500 IS, 000 18, 500 19,000 19, 600 20,000 20, 500 21, 000 21,420 Founds. 1,000 5,000 10, 000 20, 000 30, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40,000 41,000 42, OOO 43, 000 44, 000 46, 000 48, 000 50, 000 52,000 54,000 56, 000 68, 000 60, 000 62, 000 64, 000 66, 000 68, 000 70, 000 72, 000 ^ 74, 000 76, 000 78, 000 80, 000 82, 000 84, 000 85, 680 Inch. 0. .000060 . 000225 . 000675 .001025 . 001225 . 001250 . 001275 . 001300 .001426 . 001525 . 001650 . 002200 . 002875 .003525 . 004675 . 006250 . 008175 . 010000 . 012000 . 014250 . 016375 . 018700 . 021125 .023900 . 027000 .030250 . 033450 . 038000 .0425 .0475 .0638 .0650 .0750 .0925 Inch. 0. . 000060 .000175 . 000460 . 000350 .000200 . 000025 . 000050 .900025 . 000125 . 000100 .000125 . 000560 . 000675 .000650 . 001150 .001576 .001925 .001825 . 002000 . 002250 . 002125 . 002325 . 002426 . 002776 .003100 . 003260 . 003200 . 004650 .0045 .0050 .0063 .0112 .0100 .0175 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile atrength. .000050 . 000050 . 000175 .000125' Cren>sral summary, Xen&ile strength per square inch of original section pounds . , 85, 680 lElastio limit per square inch of original section do... 38,000 Elongation per inch after rupture inch. .2050 Elongation per inch under strain at elastic limit do... . 001300 iReduotion In diameter at point of rapture do... .154 Kndnctionin area after rupture, per centum of original section .- 47. 2 I'orfition of rupture - — 1" ironi nock Character of broken surface silky Eioneation of inch sections ".13, ". U, ". 20, ".35* G4 10-INCH WIKE-WOUND EIFLB. Mo. oUoO. Marks, '"B^fo"^ Diameter, ".564; Sectional area, .25 square inch. Gauged length, 4". Applied loads. Successive elongation per inch. Permanent sot. Successive permanent set. Eemarks. Total. Per square inch. per inch. Pounds. 250 1,250 2', 500 5,000 7,S00 6,760 9,000 9,260 9,600 9,760 10, 000 10, 250 10,600 10, 760 11, 000 11, 250 . 11, 500 11,750 12,000 12,250 12,500 12, 760 13, 000 13, 600 14, 000 14, 500 16, 000 15, 500 16,000 16, 500 17, 000 17, 600 18, 000 18,500 19, 000 19, 500 20, 000 20, 500 21, 000 21, 600 22, 000 22,460 Pounds. 1,000 5,000 10, 000 20, 000 30, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 41, 000 42, 000 43, 000 44, 000 45,000 46, 000 47, 000 48, 000 49, 000 50, 000 51, 000 62, 000 54, 000 56, 000 58, 000 60, 000 62, 000 64, 000 66, 000 68,000 70, 000 72, 000 74, 000 76, 000 78, 000 80, 000 82, 000 84,000 86, 000 88, 000 89, 840 Inch. 0. .000126 . 000275 . 000675 . 001000 . 001225 . 001260 . 001275 .001325 . 001375 . 001425 . 001450 . 001475 . 001500 . 001550 . 001575 . 001650 . 001700 . 001775 . 004500 . 007000 . 007450 .008375 .010000 . 011875 .013876 . 016925 . 016000 .0204-!6 .023000 .026500 . 028500 .031625 .036000 . 039000 .043500 . 049125 .063750 .0650 .0750 .0950 .1476 Inch. 0. .000125 .000150 .000400 . 000325 . 000225 .000025 . 000025 . 000050 . 000050 . 000050 .000025 . 000025 . 000025 . 000060 . 000035 . 000075 . 000050 . 000075 . 002725 . 002600 . 000450 . 000E25 .001625 . 001875 .002000 . 002050 .002075 . 002425 .002675 .002500 . 003000 . 003125 . 003375 . 004000 . 004500 . 005625 .004625 . 011250 .0100 .0200 .0525 Inch. 0. inch. 0. Initial load. Elastic limit. Tensile strength. 0. 0. General summary, TeBsile strength per square inoli of original section potmda.. 89 840 Elastic limit per aqaare inch of original section ' ! ' " ! . . do * 48* 000 Elongation per inch after rupture J .". . , -V. ..".'...".",'.'."" *." incli " ' 2100 Elongation per inch nnder strain at elastic limit -'.'.'.'.'..'...'.'.'.'..'.'...do " 0*01775 Eeduction in diameter at point of rapture !!l"!i!!l^!".'".do'" ' 164 Beduction in area after rapture, per centum of original section 49 7 Position of rapture '.,'^'."""[ i'' fis'from neck Character of hroken surface _ ' silk v Elongation of inch sections V.V.." ."..'.'.*.V."","l3 "i '4i * " 17 " 13 10-INCH WIRE-WOUND KIFLE. (>5 No. 3900. Marks, "bI«i^ Diameter, ".564. Sectional area, .25 square inch. Gauged length, 4". Applied loads. Elongation per inoli. SacoessiTe elongation per inch. Perpianent set. Saocessive permanent set. i Eemarks. Total. Per square iuob. ^ Foundg. 250 3,250 2,500 5,008. ,7,500 8,750 9,000 9; 250 9,500 9,750 10,000 10,250 10,600 10,750 11,000 11,250 11, 500 12,000 12,600 ' 13,000. 13, 500 14, 000 , 14,600 , 16,000 16! 006' 16,500 17,000 17, 600 18,000 18, 500 19,000 19, 500 20, 000 20,600 ^ 20,610 Pounds. 1, 000 ' 5, 000 10, 000 20, 000 30, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, OOO 41, 000 ^42, 000 43. 000 44,000 45, 000 ^ 46,000 48, 000 60, 000' 52, 000 54, 000 56, OUO 58,000 - 60, 000 , 62, 000 ' 64,000 66, 000 68,000 , 70,000 72.1 00 , 74,000 76,000 _ 78,000 80. 000 . 82,000 , 83, 040 Jneh. 0. . 000126 - .000300 . 000676 .001000 . 00120» . 0(11250 . 001275 . 0013100 .001426 .001550 .U02675 .003500 . 004325 .005175 .005925 . 006950 .008675 .011000 .013125 . 015500 . 017500 . 020000 .022750 . 025750 .028700 .032500 .036500 . 041260 .046876 , .053260 .0050 .0750 .0925 . 1325 .1560 Inch. 0. . . 000125 .000176 . 000376 .000325 . 000200 .000050 . 000035 .000026 . 000126 .000125 . 001125 .000825 . 000825 . 0008.50 .000750 .001025 .001725 .002325 .002125 . 002375 . 002000 . 002500 .002750 . 003000 . 002950 .003800 . 001000 .004760 .005625 . 006375 .011780 .0100 .0175 .0400 .0225 Inch 0. Inch. 0. Initial load. Elastio limit. Tensile strength. 0. ■ . 000275 . 00027,5 i t ^ — ,-■■*■ ' General summary. TeoBile strengtli per^qnare inch of original section pounds . . 82, 040 Elastio limit per square inch, of original nection do... 38,000 E ongation per ineh after rupture ". inch.. .2225 Elongation per inch under strain at elastic limit >. do... .001300 ' iBeduction in diameter at point of rupture do... -.164 Bedactioninareaafter rapture, pet cenCam of original aectioQ 49.7 Position of rupture * > i 2". 40 from neck Character of broken surface - silk^" Elongation of inch sections ".14, ".33, ".30*, ".12 H. Ex. 165—5 6G 10-INCH WIRE-WOUND KIFLE. No. 3961. Diameter, ".664. Soctional area, .2.5 square inch. Gauged length, 4". 1 Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. Successive nermanent set. Bemarks. Tota>. _ Per square inch. Pdunds. 250 1,250 2,600 '5, 000 ■ 7,000 _ 8, 760 ' 9,000 - 9, 250 9,600 9,750 10, 000 10, 250 Pounds. 1, 000 5,000 J J, 000 20, 000 30, 000 35, 000 36, 000 37, 000 . 38, 000 . 39, 000 40, 000 41, 000 42, 000 43,000 44, 000 45,000 46,000 48, 000 50, 000 62, 000 54, 000 56,000 58, 000 i60, 000 62,0d0 64,000 66, boo 68, 000 -70, 000 72, 000 74, 000 76, 000 78,000 80, 000 82, 000 84, 000 84,640 • Inch. 0. .000125 . 000275 . 000675 .001025 .001250 .001275 . 001300 . 001425 . 001500 .001700 .001900 4 .002250 . 002800 .003625 .004100 . 004750 . 00^625 . 008500 .010625 . 012500 . 014500 ' . 016700 .019200 . 021750 . 024625 . 027750 .031250 . 035000 . 039126 .043760 .0600 .0575 .0675 .0800 .1050 .1500 Inch. 0. .000125 . 000150 .000400 .000350 . 000225 . 0000215 . 000025 .000125 . 000075 . 000200 . 000200 . 000350 .000550 . 000825 .000475 . 000650 .001875 . 001875 .00 J 125 .001876- . 002000 . 002200 . 002500 . 002550 . 002875 .003125 . 003500 . 003750 . 004125 . 00i625 .006250 .0075 .0100 .0125 .0260 .0540 Inch. 0. 0. Inch. 0. Initial load. ElBStic limit. * Tensile strength. . 000025 . 000026 / . 000350 . 000325 : 10,500 10, 750 11,000 11,250 11, 500 12, 000 12, 500 13, 000 13, 500 14, 000 14, 500 16, 000 16.300 ■ ,10,000 16, 500 17, 000 17, 500 18, 000 18, 600 19, 000 10,600 ■ 20, 000 20, 500 21, 000 21, 160 ■ ' / General summary. Tensile atrength per square incli of original section ponndB,. 84,640 'Elastic limit per square incli of original section do.!. 37'ouO Elongation per inch aftermpture inch.! .1925 Eloijgation per inch under strain at elasticlimit do... .001300 ■ Kedufction in diameter at point of nipturo !!do!!! .154 Heductionin area after rupture, per centum of original section ...!!! 47,2 Position of rupture ".So'from neck Character of broken aurface — , ....silkjr Elongation of inch aectiona ".37*, ".15," "lis. ",12 10-INCH WIRE-WOUND RIFLE. „ No. 3962. 67 Marks, ^•^»'r , Diameter, ".564. Sectional area, .25 square inch. Gauged length, 4". Applied loads. Elongation per inch. Saooessiye elongation per inoh. Permanent set. Snccessive pennanent set. Semarks. Total Per square inoh. Poundt. 250 1,260 2,500 5,000 7,500 8,750 9,000 9,250 9,600 9,750 10, 000 10, 250 10, SOO 10,750 11, 000 11,250 11,500 11,750 12, 000 12,250 12, 5Q0 13, 000 13, 600 14,000 14, 500 15,000 15,600 - 16,000 16; 600 17,000 17.500 18,000 18,600 19,000 19,600 . 20,000 20,600 21,000 21,480 Pounfy. 1,000 5,000 10, 000 20,000 30, 000 35,000 36, 000 37,000 38,000 39,000 _ 40,000 41, 000 42, 000 43, 000 44, 000 46,000 46,000 47,000 48,000 49,000 60,000 52,-000 '54, 000 66,000 68,000 60,000 62,000 64,000 66, 000 68,000 70, 000 72,000 74,000 76,000 78, 000 80, 000 82, 000 84,000 85, 920 Inch. 0. . 000125 .000300 . 000700 .001025 .001200 . 001225 .001250 .001275« . 001300 .001330 . 001400 : 001460 .001500 .001525 . 001530 . 001700 . 003126 .007625 . 008250 .009125 .011000 .012926 .015175 .017126 .019625 .022173 .024750 .027623 .030650 .034000 .038500 .043000 .048625 .0550 .0650 .0760 .0975 .1475 Inch. 0. . 000125 .000175 . 000400 .000325 . 000175 .000025 . 000025 .000023 .000023 . 000050 . 000050 .000050 .000050 . 000025 . 000026 . 000150 .003425 ; .002300 . . 000626 . 000876 .001876 ; 001925 .002250 .001950 ,002500 .002560 .002575 .002876 . 003025 . 003350 .004500 .004500 .005625 . 006375 .0100 .0100 .0225 .0500 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strengtli. 0. .000026 . 000025 ^ , General summary. _ Tensile atrength peT sqnare inch of original section .ponnds.. 85,920 ElastricBmit per sqnare inch of origtnalseotion do 45,000 Elongation per incn after mptnre inch.. .2025 Elongation per inch under strain at elastic limit do... .001550 Kcdnctionin diameter at point of rupture 1 do... . 174 Keduction in aroa after rapture, per centum of origiunl section „ 62.2 Position of rupture .; , V from neck Character of broken surface silky Elongation of inoh sections ",40*, ".18, ".13, ".10 68 10-INCH W IKE-WOUND KIFLE. No. 3913. WWRT Marks, btsM Diameter, ".564. Sectional atea, .25 square inch. Gauged length, "A Applied loads. Elongation per incli. Successive elongation per inch. Permanent aet,. Successive permanent set. Kemarks. Total. Per square incli. Pounds. 250 1,250 ' 2, 600 ■ 5, 000 7,500 8, 750 9,000 9,250 9,500 9,750 10,000 10, 250 10, 500 10,750 11, 000 11, 250. 11, 500 12, 001 12, ,500 13, 000 13, 500 ', 14,000 14, 500 15, 000 16; 500 • 16, 000 ' 16, 500 17,000 17, 800 18,000 18, 500 19,000 19,600 20,000 20,480 Pounds. 1,000 5,000 10, 000 20, 000 30.000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 41,000 42, 000 43,800 44,000 45, 000 46, 000 48, 000 50, 000 62, 000 54, 000 56, 000 68, 000 60, 000 62, 000 64, 000 66, 000 68, 000 70, 000 72, 000 74, 000 76, 000 78, 000 80, 000 ' 81, 920 Inch. 0. . 000175 . 000350 . 000675 . 001100 . 001250 .001300 . 001360 . 001426 .001650 . 002075 . 002750 . 003800 - .004750 ; 006700 . 006500 . 007400 .009250 . 011625 . 013500 . 016700 .017925 . 020650 .023500 . 026575 . 029950 . 033500 . 037925 . 042625 . 04S250 .0550 .0675 .0750 ,0975 ■ .1550 Inch. 0. .000175^ . 000175 .000325 . 000425 .000150 . 000050 . 000050 . 000075 . 000225 .000425 .000675 .001050 .000950 . 000960 .000800 . 000900 .001850 . 003375 .001875 . 002200 . 002226 .002725 .003850 ■ .003076 . 003376 . 003550 . 004425 . 004700 .005626 . 006^50 .0126 .0076 .0225 .0576 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. . 000050 . 000050 .000775 . 000725 ' General summary. Tensile Btrengtii per sqaareinoh of original section pounds-. 81 920 E^sfio limit per square inch of origiDal section : do... 37,' 000 Elongation per incn after rupture .".".* 'inch !! ! . 2100 Elongation per inch under strain at elastic limit , do." . 0*01350 Beductionindiameterat point of rupture ,."."."!^"do." * .'164 Reduction in area after rupture, per centum of original sectiou .',V '" ,i& 7 Position of niptarel..... ".'."." '"dfrom'ueljfc C>iaraoter of broken surface silky' Elongation of inch sections '^13, ''.14, ''.20 ".37*' 10-INCH WIRE-WOUND KIFLE. 69 No. 3964. 10 TT B r °J M Ti I Diameter ".5t»4, Sectional area, .25 squs^re inch. Gauged length, 4". AppUedloads. Elongation perjnch. SucoesslTO elongation per inch. Permanent set. Successive permanent set. Remarks. Total. J*er square inch. Pounda. 290 1, 250 2,500 6,000 7,500 8,760 10, 000 10, 250 10, 500 10, 760 11,000 U, 250 11, 600 11, 760 12, 000 12, 260 12, 600 13, 000 13, 500 14, 000 14, 500 15,000 16, 500 16, 000 16, 500 17, OOO 17, 500 18, 000 18, 500 19, 000 19, .500 20, 000 20,500 21,000 '21,500 22, 000 22, 490 Pounds. 1,000 5,000 10, 000 20, 000 30, 000 3^,000 40, 000 41, 000 42,000 43, 000 44,000 4S, 000 46„fl00 47,000 48,000 . 49, 000 50, 000 62, 000 54, 000 56, 000 58, 000 60,000 62,000 64,000 66, 000 68, 000 70, 000 72,000 74, 000 76, 000 78, 000 80,000 82,000 ' 84,000 86, 000 88, 000 89, 960 Inch. 0. . 000100 . 000260 . 000650 . 001000 . 001175' . 001325 . 001375 .001425 .001475. .001500 . 0D1S60 .001725 .002375 . 003500 .004700 .006020 . 007450 .009325 .011200 . 013000 .014750 . 016625 .018700 . 020775 . 023000 . 026760 . 028600 . 031025 . 034250 . 038600 .0425 .0475 .or66 .0650 .0750 .1025 Inch. 0. . 000100 . 000150 .000400 . 000360 . 0<,0175 .000150 . OOOOSO . 000050 . 000050 . 000026 .000050 .000176 . 000650 .00112S . 001200 .001850 . 001400 .001875 . 001875 ' .001800 . 001760 ..00187§ . 002075 . 002075 . 002225 .002750 . 002750 . 003125 . 002625 . 004250 .0010 .0050 .0075 .0100 . .0100 .0275 Inch. 0. 0. , Inch. 0. Initialload. Elastic limit. Tensile strength. 0. 0. . "• ■ General summary. Tensile fltrength per.square inch of original section pounds. . 81), 960 Elastic limit pet square inch of original section '. do... 45,000 JBlongatiou per inch after riiptupe inch.. .1275 Elongation per inch under strain at elastic limit :do... .001550 iReductionin diameter at point of ruptare i, do... ,114 ,Kedaction in area after rupture, per centum of original section 36. 4 Position of mpture •. ".60 frpm neck Character of broken surface silky oblique, slightly granular at one part of the circninterence Elongation of inch sections -„".08,".07,".08.".28* 70 IQ-INCH WIRE-WOUND RIFLE. No. 3965, Diameter ''.564 Sectional area, .25 square inch. Gauged length 4". Applied loads. EloDgiltion per inch. Successive elongation per inch. Permanent set. Successive permanent set. Eemarks. Total. Per square inah. Pounds. 260 1,260 2,600 5,000 7,500 8,760 10,000 10. 250 lO; 500 10, 750 11,000 11,250 11,500 11,750 -12, 000 12, 250 12, 60O 13, 000 13,600 14, 000 14, 500 15, 000 15,600- 16, 000 16, 50O 17,000 17, 500 18, 000 18, 600 19,000 19,500 20,000 ^0,600 21, 000 21, 500 22,000 22,070 i'ounde. 1,000 5,000 10, 000 20,000 30, 000 35,000 40,000 41, 000 42, 000 43, 000 44,000 45, 000 46, 000 47 000 48, 000 49, 000 60, 000 52, 000 64,000 56,000 58,000 60, 000 62, 000 64, 000 66,000 68,000 70, 000 72, 000 74, 000 76, 000 78, 000 80, 000 82, 000 84, 000 86, 000 88,000 88,.280 Inch. 0. .000150 . 000360 .000725 .001025 .001225 .000375 .001400 . 001425 . 001475 . 001525 . 001590 . 001575 . 001676 . 004260 .005500 .006750 .008275 .010125 . 011950 .013775 . 015950 . 018250 .020300 . 022875 . 025500 . 028375 .031875 .035500 . 039500 . 044000 .040626 .0650 .0675 .0800 .1075 .1325 Inch. 0. . 000160 .000200 . 000375 . 000300 .000200 . 000150 .000026 . 000026 . 000030 . 000050 . 000025 . 000025 . 000100 .002576 . 001260 ■ . 001260 . 001525 . 001850 .001825 . 001825 . 002175 . 002300 .002030 . 002575 . 002625 .002875 . 003500 .003626 . 004000 . 004500 .005625 . 003375 .0125 .0125 .0275 .0250 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. - 0. 0. General summary. Tensile strength per square inch of original section pounds . 88, 2P0 Elastic limit per square inch of original section ; do... - 46,000 Elongation per inch after rupture inch.. .2000 Elongation per inch under strain at elastic limit ...do... .001575 Keduction in diameter at point of rapture do .. .174 Bednction in area after rupture, per centum of original section 52. 2 Position of rupture "1. 20 from n^'ck Character of broken surface silky Elongation of inch sections ".08, ".11 ".24, ".37* 10-lNCH WIRE-WOUND RIFLE. 71 No, 3966. ■Mnrta 10"WBT IVIdrKS, M Ts M Diameter, ".564 Sectional area, .26 square inch. Gauged length, 4". Applied loads. BloDgation per inoli. Sacoessive elonCTtion per inch. Fermaneiil set. Sucrosaive purmaueut set. ^ Kemarks. Total. Per square inch. Founds. 250 1, 250 2,500 5,000 7,500 8,760 10, 000 10,250 10, .->oo 10,750 11, 000 11, 250 11, 500 11,750 12,000 ■ 12,250 12, 500 Is, 000 ■ 13,500 14, 000 14,500 15, 000 15, 500 16, 000 16, 500 17,000 17, 500 18, OUO 18, 500 19, 000 19, 500 20, 000 20, 500 21, 000 21,500 22.000 22,500 22, 610 Pounds. 1, 000 6,000 10, 000 ^ 20,000 30,000 ^5, 000 40, 000 41,000 42, 000 43,000 44, 000 ; 45,000 46, 000 47, 000 48,000 49, 000 50,000 52,000 54.000 66, 000 58, 000 60, 000 62, 000 64,000 66, 000 68, 000 70, 000 72, 000 74, 000 76, 000 .78,000 80, 000 82, OOP 84,000 -86, 000 88„000 90,000 90,440 Inch. 0. .000125 .000275 . 000575 . 000975 .001100 .001275 . 001300 .001325 .001350 .001400 .001475 . 001600 . 001525 . 001675 . 004000 . 004950 . 007250 .009500 .010750 .013700 .014375 . 016250 . 018460 .020625 . 023250 .026000 . 028750 .031750 . 036550 .039000 . 043750 .049375 .0550 .0675 .0800 .1150 .1425 Inch. 0. .000125 .0001.50 . 000300 . 000400 . 000125 . 000175 . 000025 . 000025 0. .000050 .000075 . 000025 . 000025 . 000050 . 002325 .000950 . 002300 .002250 . 001250 .002950 . 000675 .001876 .002200 .002175 .002625 . 002750 . 002750 . 003000 . 004800 . 002460 . 004750 . 005625 . 005626 .0123 .0125 .0350 .0275 V Inch. 0. 0. Inch. 0. Initial load. Klastic limit. Tensile strength. 0. 0. ■ * - General summary. Tensile strength per square inch of original section ponncls.. Elastic limit per square inch of original section ..do... Elongation per inch after rupture inch . . Elongation per inch under strain at elastic limit do... Beduction in diameter at point of rupture do. . Keduction in area after rupture, per centum of original section Po!»itioD of rupture 1". 25 from neck Character of broken surface granular 60 per cent., silky oblique 40 per cent. Elongation of inch sections ".20,".26*,".ll, ". 09 90. 440 47, 000 .1650 001535 .094 30.6 72 10-INCH WIEE-WOUND EIFLE. No. 3967. Marks, "^Tfi" Diameter, ".564. Bectional area, ,25 square inch. Gauged length, 4". .Applied ioadsi EloDgatlon per inch. Successive elongation per inch. Permanent set. Snocessive permanent set. Eemarks. Total. Per square inch. Pounds. ' 250 1,250 , 2, 600 6,000 7,600 8,750 10,000 10,260 10,600 10, 750 11,000 11,250 11,500 11, 750 12, 000 12, 250 12, 500 13,000 13,500 14, 000 14, 500 16, OOO 16,600 16, 000 IB, 500 17,000 ■17,600 18, 000 18,500 , 19,000 19, 500 20, 000 20, 500 21,000 21, 500 21, 900 Pounds. 1,000 6,000 10, 000 20,000 30, 000 35, 000 40, 000 41, poo 42, 000 43, 000 44, 000 45, 000 46, 000 47, 000 48, 000 49, 000 60, 000 52, 000 - 64, 000 56, 000 58, 000 60, 000 62, 000 64,000 66, 000 68, 000 70, 000 72, 000 74, OCO ' 76,000 78, 000 80, 000 82,000 84, 000 86, OOQ 87, 960 Inch. 0. . 000125 .000276 . 000625 . 001000 .001150 . 001275 .001300 . 001326 . 001375 .00142$ . 001625 .006250 . 005850 .006275 . 006950 . 008075 . 010000 .011876 .013760- . 016000 .018000 . 020375 , .022800 . 026^00 .028375 .031250 .034760 .038600 . 043375 . 048376 .0550 ■ .0675 .0775 .0960 .1476 Inch. 0. .000126 .000150 . 000350 . 000376 . 000150 . 000126 . 000026 .000025 .000050 . 000050 .000200 . 003625 . 000600 . 000425 . 000675 . 001125 .001926 .001875 . 001876 . 002250 . 002000 .002375 . 002475 . 002700 . 003876 .002875 . 003500 . 003760 .004876 .006000 . 006625 .0126 .0100 .0175 .0525 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strongtli. 0. 0. General summary. Tensile Btrengtli per sqnare inch of original section : ponnds.. 87,960 plastic limit per square inch of orisinal aeclion do... 44,000 Elongation per inch after rupture inch.. .2000 Elongation per inch under strain at elastic limit do... .001426 Eedpction in diameter at point of rupture do... .114 Keductlop in area after rupture, per centum of original section 36. 4 Position of rapture ; 2". 20 from neck Characture of bniken surface silny, oblique Elongation of inch sections ".14, ".32*, ".20, ".14 10-li^CH WIRE-WOUND RIFLES. No. 3968. 7b Marks, Vt.V Diameter, ".564. Sectional area, .25 square inch. Gauged length, 4". Applied loads. ■ Elotgation per inoh. SaooeasiTO elongaticm per inch. Pbrmanent set. Suecesaive pdi-manent set. Remarks. Total. Per scniare inohj Founds. 260 1,260 2,600 5,000 7,500 8,760 10, 000 10,260 10, 600 10, 750 11, 000 ]1,250> 11,500 11,750 12,000 12, 250 12,500 13, 000 13,500- 14,000 14,500 15, 000 15, 500 16,000 16, 500 17, 000 17, 500 18, 000 18,500 19, 000 19, 500 20, 000 20, 530 21,000 21, 500 21, 720 Pounds. ■ 1, OOO 6.000 10, 000 20, OUO , 30, 000 -35, 000 40, 000 41,<«00 42, 000 43, 000 44,000 46, 000 46, 000 47, 000 48,000 49, 000 60,000 82, 000 54,000 56,000 -■ 68, 000 60, 000 62, 000 64,000 66,000 68, 000 70, 000 72,000 74, 000 76, 000 78, 000 80,000 82, 000 84,000 86,000 86, 880 Inch. 0. .000125 . 000275 . 000600 .001000 . 001150 .001276 . 001325 .001375 .001425 .001475 .001500 . 001525 . 001750 .001750 . 006250 . 008625 . 009650 . 011700 . 013700 . 016000 . 018125 . 020500 . 023250 . 026000 . 029125 . 033000 . 036000 . 040500 .045000 . 051260 .0575 .0700 .0825 .1075 .1600 Inoh. 0. ,000125 .000150 . 000325 .000400 .000150 . 000125 , 000060 . 000060 .000030 . 000060 . 000026 . 000025 . 000025 .000200 . 005000 . 001875 . 001()26 . 002060 . 002000 . 002300 . 002125 .002,375 . 002750 . 002750 .003125 . 003875 . 003000 .004500 . 004500 . 006260 . 006250 .0125 .0125 .0250 ■. 0525 Inch. 0. 0. Inch. 0. Initial load. 1 Blastic limit. Tensile strength. 0. 0. ^ '" . General summary. Tensile strength per square incji of original section pounds . . 86, 880 Elastic limit per square incli ot original section do... 47,000 Elongation per inch after rapture - inch... .2150 Elongation per inch under strain at elastic limit - do... .001550 Keduotion in diameter at point of rupture ...do..- .161 iledtiotion in area after rupture, per centupi of original section l 49. 7 Position of rupture , - 2" from neck Character of broken surface , silky ' Elongation of inch sections i... ".13, ".16, ".42*, ".1 74 10-INCH WIRE- WOUND RIFLE. No. 3969. Marks, "^W- Diameter, ".664. Sectional area, .25 square inch. Gauged length, 4"- Applied loads. Elongation per inch. Siiccesaiye elou^ation per inch. Permanent set. Suooesslve permanent set. Bemarks. Total. Persquare incD. . Pounds. 250 1,250 2,500 Ti,000 7,500 ,8, 750 10, 000 10, 250 10,500 10, 750 11,000 11,250 11,500 11, 750 12, 000 12,250 12, 500 13, 000 13, 500 14,000 14,500 15,000 15, 600 -16,000 16,500 17, 000 17,500 ■18, 000 18, 600 19, 000 19, 500 20, 000 20, 500 21, 000 . 21,500 21,700 Pounds. 1,000 B,000 10,000 20, 000 30, 000 ~ 35.000 40,000 ai, 000 42, 000 43, 000 44,000 45, 000 46, 000 47, 000 48,000 49, 000 50, 000 52,000 54,000 56,000 '58,000 1 ' 60, 000 ' «2, 000 64, 000. ' 66, 000 68, 000 70,000 72, 000 74, 000 76,000 78,000 80,000 82, 000 84,000 .86, 000 86,800 Inch. 0. . 000125 . 000300 . 000675 .001025 .001200 . 001376 . 001i25 . 001450 .001475 . 001525 . 001575 . 003500 .003025 .006000 . 000500 . 007675 .009625 . 011626 . 013500 . 015600 .017800 .020775 - . 022750 . 025626 . 028760 .031876 .035025 . 039575 .044500 . 051000 . 058250 .0700 .0825 .1075 .1450 Inch. 0. .000125 .000175 . 000375 .000350 . 000175 .000175 . 000050 . 000025 . 000026 . 000050 . 00005^ .001925 . 001S25 .000975 . 000500 .001175 . 001950 . 002000 .001875 . OO'iOOO .ooaoo . 002975 .0U1975 . 002876 .003125 . 003125 . 003750 .OOSO.'iO .00l9'd5 . 006600 . 007250 . 011760 .0125 .0260 .0375 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile streaslh. ■ 0. 0. Gtmeral sumiffictry. Tensile strength per sqnare inoli of original section polinils.'. 86, POO Blasticlimit per square inch of original section. do. .'. . 45, 000 Elongation per inch after rnpture. .-.- inch., .2175 Elopgatlon per inch under strain at elastic limit do .00157.^ Beduction in diameter at point of rupture. ...do ... .184 Keduction in area after rupture, per centum of original section 54 ti Position of rupture 2" from rtck Character of broken surface _ . . . ,^ . ail k v Elongation of inch sections ..» ".15, ".43*, ".16, ".13 10-INCH WIBE-WOUND RIFLE. 75 No. 814. Marks, ^"B^fi'^ Length, 5". Diameter, ".798. Sectional area, .50 square inch. Grf^uged length, 3". Applied loads. Ip Sucpessire compres- sion per inch. Permanent .set. Snocesuive permanent set. Bemarks. Total. Per square mcli. Poundt. 500 . 2,500 5,000 7,600 10,000 12, 600 15, 000 ,15,600 16,000 -16,600 17,000 17,500 IB, 000 ' 18, 500 19,000 19,500 .20,000 '20,500 21,000 21,500 22,000 22,500 23,000 23,500 -.24,000 24,600 25,000 38,050 Pound*. 1,000 5,000 10,000 16, 000 20,000 26, 000 30,000 31,000 , 32,000 33,000 34,000 35,000 36.-000 37,000 . 38,000 39,000 ,40, 000 41,000 42,000 43,000 44,000 46, 000 46,000 47,000 48,000 49,0tl0 50,000 76,100 Inch. 0. .000167 .000333 .000600 .000667 .000833 .001000 .001033 , .001067 .001100 .001133 . 001167 .001200 . 001233 .001300 .001333 .001400 .001500 .001633 .001767 .003000 . 006000 .006600 - .007000 . 007700 .008500 . 009500 Inch. 0. .000167 .000166 .000167 . 000167 .000166 .000167 .000033 .0000^ .000033 . 000033 .000034 .000033 .000033 . 000067 000033 Inch. <•• Inch. 0. Initial load. Elastic limit. Ultimate strength. 0. ,. .000067 .066067 .000133 .000066 1 ' .000077 . 000100 .000133 .000134 .001233 . 003000 .000600 .000400 .000700 . 000800 . 001000 .000300 . 000167 Failed by triple flexure. 76 10-INCH WIEE-WOUND EIPLE. No. 815. Marks, Vifo^ 5". Length, Diameter, ".798. Sectional area, .50 square inch. Gauged length, 3". Applied loads. Compres- Bion per inch. SaccessiTe comproa- Bion per inct. . Permanent set. Successive, permanent iat. KemarkB. Total. Per square inch. ' Pounds. 600 2,600 5,000 7,500 10, 000 12,500 15, 000 17, 600 18, 000 18,600 19,000 19,500 20, 000 20, 500 21, 000 ■ "21,500 22, 000 22,500 23,000 - 23,500 24, 000 24,500 25, OliO 39, 520 Pounds. 1,000 5,000 10, 000 15.000 20,000 25,000 30, 000 35,000 36, 000 37, 000 38, 000 39, 000 40,000 41, 000 42, 000 43, 000 44,000 45,000 46, 000 47, 000 48,000 49, 000 50, 000 79, 040 Inch. 0. . 000133 .000267 . 000433 . 000600 .000767 . 000933 .001100 . 001133 .001167 . 001200 . 001233 .0C1300 . 0013(17 . 00150 1 . 001600 . 001700 . 001967 . 002500 . 003383 . 004500 .005800 . 007233 Jncft. 0. . 000133 .000134 . 000166 .000167 .000167 . 000166 . 000167 . 000033 . 000034 .00003!) . 000033 . 000007 . 000067 ; 000133 .000100 . 000100 . 000267 . 000533 . 000S33 .001167 . 001300 .001433 Inch. 0. , Inch. 0. Initial load. Elastic limit. TTltimate'strongth. 6. 0. . 000067 .000067 Failed by triple flexure. 10-INCH WIRE-WOUND EIFLE. 77 No. 810., Marks, 'o^:^^ Length, 4".27. jgiiameter, '^798. Sectional area, .50 square inch. Gauged length, 3". Applied loads. Comprea. slon per inch. Sncoessive compres- sion per inch. Permanent set. SnocesaiTe permanent set. Bemarka. Total. Per square inotx.' Pounds. 500 2,300 ^, 000 7,500 10,000 12,500 15, 000 17,600 18,000 18, 500 lil, 000 19, 500 20, 000 20, 500 21,000 21,600 22, 000 22,500 23, 000 23,500, 24, 000 24,'600 25, 000 44,950 Pounds. 1,000 5,000 10,000 15, 000 20, 000 25,000 30, OPO 35, 000 36, 000 37, 000 38, 000 39,000 40, 000 41, 000 42,000 43, 000 44,000 45, 000 46, 000 47,000 48,000 49, 000 50, 000 89, 900 Inch. 0. .000067 .000233 .000367 . 000533 .000700 . 000867 .001033 . 001033 .001067 .001100 .001133 . 001167 .001200 ,001333 .001500 . 002867 .003333 . 003000 . 004567 . 005200 .005967 .006767 Inch. 0. .000067 . 000166 .000134 .000166 ,000167 .000167 ' . 000166 0. .■00003'4 . 000033 . 000033 .000034 .000033 .000133 . 000167 .001367 . 000466 .000567 . 000667 . 000633 .000767 .000800 Inch. 0. IncA. 0. Tbitial load. Elastic limit. Ultiraate strength. 0. •>• 0. Failed by triple flexure. 78 lO-INdH WIRE-WOUND JtlFLE. No. 817. Marks, "7^^^ Length, i".&. Diameter^ ".798. Sectional area, .50 square inch. Gauged length, 3". Applied loads. Compres- sion per incli. Successive compres- sion per incn. Permanent set. Successive permanent set. Kemarks. Total. Per square inch. Pounds, 500 2,500 5,000 7,500 10, 000 J 2, 500 15, 000 17, 500 18, 000 18,500 19, 000 19, 500 20, 000 20, 500 21, 000 21, 600 22, 000 22, 500 23, 000 23, 500 24, 000 24, 500 25, 000 43, 400 Pounds, 1,000 6,000 10, -000 15, 000 20, 000 25, 000 30, 000 35, 000 36, 000 37,000 38, 000 39, 000 40, 000 41, 000 42, 000 43, 000 44,000 45, 000 46, 000 47, 000 48, 000 49, 000 50, 000 86, 800 Inch. 0. . 000133 . 000267 . 000433 . 000600 . 0U0767 . 000933 .001133 .001167 .001200 . 001233 . 001300 .001433 . 001667 .001733 . 002333 .003600 . 004467 . 005067 . 005833 . 006567 . 007433 .008467 Inch, 0. . 000133 .000134 .000166 . 000167 .000167 .000166 . 000200 . 000034 . 000033 . 000033 . 000067 . 000133 . 006134 .000166 . 000600 . 001267 . 000867 . 000600 . 000766 .000734 . 000866 .001034 Inch. 0. Inch. 0. Initial load. Elastic limit. Ultimate strength. 0. 0. . 000200 . 0U0200 Failed by triple flexure. 10-INCH WIKE-WOUND EIFLE. No. 818j 79 Marks, ly^K.^ Length, 5". Diameter, ".798. Sectional area, .50 square inch. Gauged length, 3". Applied loads. Compres- sion per incL Snccesaive compres- sion per Incn. Permanent set. Successiye permanent set. • Remarks. Totel. Eer square inoQ. Pounds. 500 . 2,600 6,000 7,600 10, 000 12,600 15,000 17, 500 20,000 20, 500 21, 000 21, 500 22, 000 22, 600 23, 000 23, 500 24, 000 24,600 26,0U« 25,500 26,000 4ff,940 Pounds. 1,000 6.000 10, 000 15, 000 20, 000 25, 000 30, 000 35, 000 40, 000 41, COO 42, 000 43,000 44,000 45, 000 46, 000 47, ooo; 48,000 49,000 60, 000 51,000 62, 000 81,880 Inch. 0. .000133 .000267 .000433 , . 000600 .000767 . 000933 .001100 . 001333 .001367 .001400 . 001433 . 001467 .001500 . 001667 . 001867 . 003400 . 006733 . 007100 .007667 . 008S00 Inch. 0. . 000133 .000134 . 000166 .000167 .000167 .000166 . 000167 .000233 . 000034 . 000033 . 000033 . 000034 .000033 .000067 . OOQ300 .001633 ! ooobor . 000833 Inch. 0. Inch. 0. Ihftialload. ^''\ , Elastic limit. Ultimate strengtli. .000033 - . 000033 .000067 .000034 . Failed by triple flexure. 80 10-INCH WJEE- WOUND KXiLE. No. 819. Marias, "^T^fo"^ Length, 5". Diameter, ".798. Sectional area, .50 square inch. Gauged length, 3". Applied loads. Compres- sion per inch. Succes.sive compres- sion per incn. Perma.nent , set. 1 Sncceasive permanent set. Bemarlis. Total. Per square inch. Ptnmds. 500 2; 500 ^ 6, 000 7, 600 10,000 -12,500 16, 000 17, 500 - 20,000 20,600 21, OOO 21,500 .22, 000 22, 500 23,000 23, 500 24,000 24,500 25, 000 25, 500 ^ 26,000 38, 710 Pounds. - 1,000 5,000 - 10, 000 15, 000 20, 000 25, 000 30, 000 35, 000 40, 000 41,000 42, 000 43, 000 44, 000 46, 000 46,b«0 47, OOO 48,000 49, 000 Ho, 000 51, 000 52, 000 77,420 Inch. 0. .000133 .000267 . 000433 ■ . 000567 .000733 . 000900 . 001033 . 001167 .001200 .001233 . 001233 .00L267 . 001300 . 001333 . 001367 .001367 . 003567 .005667 .006333 • .007100 Inch. 0. .000133 .000134 .000166 . 000134 .•000166 .000167 . 000133 .000134 . 000033 .000033 0. . 000034 -.000033, . 000033 .000034 0. .002200 . 002100 .000666 . 000767 Inch. 0. Inch. 0. Initial load. Elastic Umit. Ultimate strength. 0. 0. 0. Failed by triple flexure. 10-INCH WIRE- WOUND KIFLE. No. 820. 81 Marks, "^^y Length, 3"A2. Diameter, ",798, Sectional area, ,50 square inch. Gauged length, 2". Applied loads. CompreS' sion pel inch. Snocessiye compres- aion per luoL Permanent set. Successive permanent set. Bcmarks. Total: Per square inoh. Pounds. 500 2,500 5,000 7,500 10,000 12,500 15, 000 17, 500 20,000 20, 500 21,000 21, 500 22, 000 28,500 23,000 23, 600 24,000 24, 600 25,000 25,600 ^6, 000 51,100 Pounds. 1,000 5,000 10,000 15, 000 20, 000 25, 000 30, OOO 35, 000 40,000 41,000 42, 000 43, 000 44, 000 45,000 46, 000 47, 000 48,000 49, 000 50,000 61,000 62, 000 102, 200 Itush. . 0. .000100 .000200 .000360 . 000550 .000750 . 000950 . 001100 .001250 . 001250 .001300 . 001300 .001350 .001400 .002160 .003500 . 004650 . 005650 , 006000 . 006^50 . 007650 Inch. 0. .oooioq . 000100 .000160 .000200 .000200 . 000200 .000160 .000160 0. .000050 0. . 000050 .000050 .000760 .001350 .001150 .001000 . 000350 .000650 . 001000 Inch. 0. Inch. 0. Initial load. Elastic limit. Ultimate strength. 0. 0, 0. '"" Failed by triple flexure. H. Ex. -165 6 82 10-INCH WIRE-WOUND KIFLE. 10-INCH WIRE- WOUND RIFLE. Jacket. No. 4217. Marks, MT, o Diameter, ".564. Sectional area, .25 square inch. Gauged length, 3". Applied loads. Total ^^^^r' Elongation per inch. Successive elongation per incli. Permanent fiet. Successive permanent set. Kemarks. Pounde, 250 1,260 2, 500 3,750 5,000 6,250 7,500 8,750 10, 000 11, 260 13, 500 12, 760 13; 000 13, 250 13, 500 13,750 14,000 14,250 14, 600 14, 760 15, 000 i5, 500 16,000 16, 600 17, 000 17,500 19, 000 20, 000 21, 000 21,940 Fov/nds. 1,000 5,000 10, 000 15, 000 20, 000 25, 000 30, 000 35, 000 40, 000 46, 000 50, 000 51, 000 52. 000 53, 000 64,000 65. 000 66, 000 67, 000 58, 000 59, 000 60,000 62, 000 64,000 66, 000 68, 000 70, 000 76, 000 80, 000 84, 000 87, 760 Inch. 0. . 000100 . 000300 . 000500 . 000667 .000883 . 001033 . 001200 . 001367 '.001667 .001933 . 001967 . 002067 . 002167 . 002267 . 002400 .002600 .002767 .003038 . 003267 . 003700 . 004600 . 006667 . 006967 . 008400 .010000 ,0167 .0267 .0300 Inch. 0. . 000100 . 000200 . 000200 . 000167 .000166 .000200 . 000167 . 000167 .000300 .000266 . 000034 .000100 . 000100 . 000100 .000133 . 000200 . 000167 . 000266 . 000234 . 000433 . 000900 .001067 . 001300 . 001433 . ooieoo .0067 .0100 .0033 Inch. 0. V 0. Inch. Initial load. .000067 Elastic limit. ITot well defined. Tensile strength. General summary. Tensile strength per square inch of original section pounds . . 87, 760 Elastic limit per square inch of original section (not well defined) do . . . 62, 000 Elongation per inch after rupture ^..inoh.. .0367 Elongation per inch under strain at elastic limit do... .002067 Keduction in diameter at point of riipture L 014 Bednction in area_after rupture, per centum of original section 5. Position of rupture ". 35 from neck Character of broken surface granular, dark colored, spongy spot at circumference Elongation of inch sections ".\>S',",Q3,",(>% 10-XNCH WIRE-WOUND RIFLE. No. 4218. 83 Marks, i»iW Diameter, ".564. Sectional area, .25 square inch. Gauged length, 3". Applied loads. Elongation per incli. Successive elongation per inch. Permanent set. Successive permanout set. Kemarks. Total. Per square JDCtl. Poxmda. 250 1,250 2,600 3,750 5,000 .6,250. 7, 500 8,750 10, 000 - 11,260 11,500 11, 750 12,000 12, 2.50 12,500 12, 750 13,000 13, 250 13,500 13,750 14,000 14,250 14, 500 14, 750 15, 000 15.500 16, OOO 16, 500 17, 000 17, 50O 18, 500 20, 000 21, 000 22, 000 22, 960 Potmda. -1,000 5,000 10,000 15, 000 20,000 25, 000 30, 000 36, ono 40^000 45,000 . 46, 000 47,000 48, 000 ' 49,000 - 50, 000 61,000 62, 000 53,000 54, 000 55, 000 56, 000 57, 000 58j 000 59, 000 60,000 62, 000 64; 000 66, 000 68, 000 70, 000 74, 000 80, 000 84, 000 88, 000 91,840 Inch. 0. . 000133 . 000300 .000500 . 000667 .000833 . 001000 . 001167 . 001333 .001667 . 001600 . 001638 . 001667 . 001700 . 001833 . 001933 . 002087 .002233 . 00^433 .002833 . 003433 . 003833 . 004667 .005267 . 006333' . 008267 . 010033 ..012033 .014333 . 016900 .0200 .0300 .0367 .0533 Inch. 0. . 000133 . 000167 .000201) .000167 . 000166 .000167 .000167 . 000166 .000234 .000033 .000033 .000034 . 000033 . 000133 . 000100 . 000134 .000166 .000200 . 000400 . 000600 . 000400 .000834 .000600 .001066 . 001934 .001766 , 002000 .002300 . 002567 .0031 .0100 .^0067 .0166 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. .000033 . 000033 General summary. Tensile strength per square inch of original section pounds.. , 91,840 Elastic limit pec square inch of original section do... 49,000 Elongation per inch'after rupture inch.. .0733 ~El6ngation per inch under strain at elastic limit .'. ....do... .001700 Beduction in diameter at point, of rapture do. .. .054 Beduction in area after rupture, per centum of original section 18.3 Position of rupture '. ".16 from necic f^harafttp-r nf Tipnlrfti, flm»fa.f.« frrn^iilflT .fUl ««r rtanf ■ Attn ailV-w wri+.h fin« aipAalr hiHcrlit. TY,A+.nl RO Tiftr c.ftnf; 84 10-INCH WIRE-WOUND EIFLE. No. 4219. lOWKJ Marks, ,i»t™ Diameter, ".564. Sectional area, ,25 square inch. Ganged length, 3". Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. Sncceasive permanent set. Kemarks. Total. Per square inch. Founds. 260- . 1,250 . 2,500 3,750 5,000 6,250 • 7,600 8,760 10,000 ^ 11,250 - 11,500 11,750 12,000 12,250 12,500 12, 750 13, 000 13, 250 13,500 14, 000 14, 500 15,000 16, OOO 17,000 18, 000 18, 680 Founds. 1,000 5,000 10, 000 15, OOO 20, 000 25, 000 30, 000 35, 000 40, 000 45, 000 46, 000 47, 000 48, 000 49, 000 60, OOO 51,000 52, 000 53,000 54,000 56, 000 58, 000 60, 000 64,000 68, 000 72,000 74,720 Inch. 0. . 000133 .000333 . 000500 .000667 . 000900 .001067 .001267 .001400 . 001667 . 001700 . 001800 .001933 . 002033 . 002100 . 002267 .002567 . 003667 . 005000 .066700 . 008333 .010400 .0133 .0233 .0333 Inoh. 0. . 000133 . 000200 .000167 .000167 . 000233 . 000167 .000200 .000133 .000267 .000033 . 000100 . 000133 . 000100 . 000067 . 000167 . 000300 . 001100 . 001333 . 001700 . 001633 .002067 .0029 .0100 .0100 Inch. 0. 0- ' Inch. Initial load. Elastic limit. Not well defined. Tensile strength. 0. . 000033 . 000033 General summary. Tensile strength per square inch of original section : pounds.. Elastic limit per square inch of original section, not well defined do... Elongation per inch after rupture -' inclT-. Elongation per inch under strait at elastic limit do... Jled notion in diameter at point of rupture do... Eeduction in area after rupture, per centum of original section Position of rupture 1". Ifrom neck Character of broken surface granular, dark-colored spongy metal atone side of specimen Elongation of inch sections ".04*, ".03, ".02 74, 720 46, 000 .0300 001700 .014 5.0 10-INCH WIRE-WOUND RIFLE. 85 No. 4220. Marks, ^Vm^ Diameter, ".563. Sectional area, .2S square inch. Gauged length, 3". Applied loads. ElongatioD per iuoh. SacceBsive elODgation por inch. Permanent set. Successive permanent set. Semarbs. Total. Per sqnaTe inch. Poundf, 250 1,260 2, 500 3,760 5,000 6,260 7,500 8,760 10,000 10, 250 10, 500 10,750 11, 000 11,250 11, 500 11, 750 12, 000 12,250 12, 500 13,000 13, 500 14,000 14, 500 15, 000 15, 500 16,000 Pounds. 1,000 5,000 10,000 16, 000 20,000 25, 000 30, 000 35, 000 40, 000 41,000 42,000 43,000 44,000 45,000 46, 000 47,000 48, 000 49,000 50, 000 52, 000 54, 000 56, 000 58, 000 60,000 62, 000 64, 000 Inch. 0. . 000100 . 000300 . 000500 . 000667 .000833 . 001033 . 001267 .001600 .001667 .001633 .002000 .002500 . 004000 . 007667 .010400 . 011333 . . 012667 .014000 .016667 .0200 .0233 .0267 .0300 .0333 .0400 Inch,. 0. . 000100 .000200 . 000^00 . 000167 .000166 . 000200 . 000234 . 000233 .000067 . 000066 . 000367 . 000500 . 001500 . 003667 .002733 . 000933 . 001334 . 001333 .002667 . 003333 .0033 .0034 .0033 .0033 .0067 Inch. 0. 0. Inch. 0. Initial load. Elastic limit.' Tensile strength. ............ .000133 . 000133 ■ General summary. Tensile strengtli per square incli of original section pounds . . 64, 000 .Elastic limitper square inch of original section do... ,42,000 Elongation per inch after rupture inch.. .0600 ]Slongationperinchunder strain at elastic limit do... .001633 'Reduction in diameter at point of rupture do...^ .043 Beduction in area after rupture, per centum of original section 15. Position of rupture i ".3 from neck Character of hroken snrface dull silky, band of dark colored spongy metal extends across surface , Elongation of inch sections '. ''.04, ".04, "10* 86 10-INCH WIRE-WOUND RIFLE. Fo. 4221. Marks, ly^f/ Diameter, ".564. Sectional area, .25 square inch. Gauged length, 3". Applied loads. Elongation per inch. Snccessive elongation per inch. Permanent set. Successive peimaneat set. Kemarks. Total. Per square inch. Pounds. ' 250 1,250 2,600 3,750 5,000 6,250 7,500 8,750 10, 000 11,260 12, 000 12, 250 12, 600 12, 760 18,000 13, 250 13, 600 13, 750 14, 000 14, 500 16, 000 15, 600 16, 000 16, 600 17,000 17, 600 18,000 18, 500 19, 000 19 500 20,000 20, 500 21,000 21,500 22,000 22,500 23, 000 23, 120 Pminds. 1,000 5,000 10,000 16, 000 20, 000 26, 000 30, 000 35,000 40, 000 45, 000 48,000 49, 000 60,000 61, 000 62, 000 53, OIjO 54,000 65, 000 66, 000 58, 000 60,000 62, 000 64, 000 66, 000 68, 000 70, 000 72, 000 74, 000 76, 000 78.000 80, 000 82,000 84, 000 86, 000 88, 000 90, 000 92, 000 92, 480 -iTich, 0. . 000100 . 000267 . 000433 . 000567 . 000733 . 000933 . 001067 .001267 . 001400 . 001600 .001633 .001700 ; 001733 .001867 . 002000 . 002167 . 002500 .003667 .006033 . 007933 .010000 . 011667 . 014000 .016333 . 018667 .021167 . 024167 .0267 .0300 .0333 .0367 .0400 . 0500 .0600 .0733 .1000 .1233 Inch. 0. . 000100 . 0C0167_ .000166 .000134 . 000166 . 000200 . 000134 . 000200 . 000133 . 000200 .000033 . 000067 . 000033 .000134. .000133 .000167 . 000333 . 001167 . 002366 . 001900 . 002067 .001067 . 002333 .002333 . 002334 . 002500 . 003000 . 002533 . 0033 .0033 .0034 .0033 .0100 .0100 .0133 .0267 .0233 Inch. 0. ■ 0. Inch. 0. Initial load. 0. 0. ■ Tensile strength. General summary. Tensile strength per square inch of original section pounds . . 92, 480 Elasticlimit per square inch of original section , - do... 51,000 Elongation per inch after rupture. Inch,. .1667 Elongationper inch under strain at elasticlimit ■ do. .. .001733 Eeduction in diameter at point of rupture do . . . .134 Reduction in area after rapture, per centum of original section 41,9 Position of rupture, ".5 from neck Character of broken surface silky Elongation of inch sections ".11 ".lo, ".29* 10-INCH WIRE-WOUND RIFLE. No. 4222.' 87 Marks, ^"^^^^ Diameter, ".564. Sectional area, .25 square inch. Gauged length, 3". Applied loads-. £lonp;atioD per inoli. Successive elongation , per incli. Permanent set. Successive -permanent set. Remarks. Total. Per squftre. inch. Pounds. 260 1,250 2,600 ■ 3,750 5,000 6,200 7,500 8,750 10, 000 11, 250 11, 600 11, 750 12, 000 12,260 12, .500 12, 750 13, 000 13, 500 14,000 14, f 00 . 16,000 15, 500 16, 000 16, 600 17, 000 '. 17, 600 18,000 18, 600 19,000 19,500^ •20,000 ' 20, 600 21,000 21,600 22,000 Pounds, 1,000 6,000 10, 000 15,-000 20, 000 26, 000 ■ 30, 000 35, 000 40, 000 45,000 46, 000 47,000 48,000 49, 000 50,000 - 51, 000 62,000 54, 000 56, 000 68, 000 60, 000 , 62,000 64, 000 66, 000 68, 000 70, 000 72,000 74, 000 76, 000 78, 000 ^80,000 - 82,000 84,000 86,000 88,000 Inch. 0. .000100 .000300 .000467 . 000633 .000800 . 001000 .001233 . 001400 .001633 .001667 .001700 .001733 .001900 .002107 . 002433 . 002933 . 003733 . 005833 .008833 .010667 .012833 . 016000 -.017367 .019833 . 023000 .025833 .029167 .032667- .036833 .043000 .0450 .0567 .0667 .0867 Inch. 0. . 000100 . 000200. ..000167 .000166 .000167 . 000200 . 000233 . 000167 . 000233 .000034 .000033 .000033 . 000167 . 000267 . 000266 . 000500 .000800 .002100 . 003000 .001833 . 002166 - .002167 . 002367 . 002466 . 003167 " . 002833 ."003334 .003500 .004166 . 006167 ,0020 .0117 .0100 .0200 Inch. 0. 0. Inch. 0. , Initial load. Elastic limit. Tensile strength. 0. 0. ... General summary. 88, 000 48, 000 1033 Tensile stren^h per square inch of original section pounds.. Elastic limit per square inch of original section do... Elongation per inon ufter rupture inch.. Elongation per inch under strain at elastic limit do... .001733 Kednction in diameter at point of rupture do... .084 Keduction in area after rupture, per centum of original section 27.6 Position of rupture „ ".4 from neck Character of broken surface granular, 50 percent.; dull flaky, 50 per cent. Elongation of inch sections "'.19*, ".07, ".05 88 10-INCH WIEE-WOUND EIFLE. No. 4223. Marks, fy^-f/ Diameter, "".560, Sectional area, .246 square inch. Gauged length, 3"- Applied loads. > Elongation per inch. Successive elongation per inch. Permanent set.. Successive permanent set. Remarks. Total. Per square inch. ^ Pounds. 246 1,230 2,460 3,690 4,920 6,150 7,380 8,610 9,840 11,070 11,316 11,562 11, 808 12,054 12, 300 12, 792 20,140 , Pounds. 1,000 5,000 10, 000 15,000 20,000 25, 000 30,000 35, 000 40, 000 45, 000 46, 000 47, 000 48, 000 49,000 SO, OOO 52, 000 81,870 Inch. 0. . 000167 . 000367 . 000533 . 000733 .000933 .001133 . 001300 .001600 .001767 . 001800 .001867 . 001967 .002233 . 006400 . 011667 Inch. 0. .000167 .000200 . 000166 . 000200 . 000200 . 000200 .000167 . 000200 .000267 . 000033 .000067 .000100 . 000266 . 004167 . 005267 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General nummary. Tensile strength per square inch of original section ponnds.. 81,870 Elastic limit per square inch of originsLl section do... 48, 000 Elongation per inch after mptnre inch.. 0.1900 Elongation per inch under strain at elastic limit do... .001967 Keduction in diameter at poiiit of rapture .do... .150 Beduction in area after rnptore, per centum of original sectiou 46.3 Position of rupture - ".7 from neck Character of broken surface ., silky Elongation of inch sections * ".33*, ".13, ".11 10-INCH WIRE -WOUND EIFLB, No, 4224. 89- Marks, 1^^^ V Diameter, ".564. Sectional area, .25 square inch. Gauged length, 3". 1 Applied loaVla. 'Saoceasive elongation per inch. Permanent sot. Successive permanent set. liemarks. Total. Per square inch. per inch. Founds. 260 1,250 2,600 3,750 5,000 6,250 7,500 8, 750 10,000 11, 250 11, 600 11,750 12,000 12, 250 12,600 12,760 13, 000 13. 600 14, 000 14, 500 15, 000 16,6P0 16, 000 16, 500 17,000 17, 600 18, 000 18, 205 19, 000 19, 500 20, 000 20, 600 21, 000 21,500 21, 920 Pounds. 1,000 5,000 10, 000 15,000 20, 000 26, 000 30, 000 35.000 40"000 45, 000 46, 000 47, 000 48, 000 49, 000 60, 000 61, 000 52, 000 54, 000 56,000 68, 000 80, 000 62, 000 64, 000 66, 000 68, 000 70, OOO 72, 000 74,000 ,76, 000 78, 000 8i), 000 82, 000 . 84, 000 86, 000 87, 680 Inch. 0. .000100 .000267 . 000400 . 000600 . 000767 . 000933 .001100 . 001267 . 001533 . 001800 .001633 . .001700 .001733 . 001900 . 002200 .002533 .003900 . 005633 . 007233- . 009233 .011233 .013367 .015933 . 018533 . .021287 . . 024367 . 028067 .031267 .035000 .0367 , .0400 .0500 .0667 .0933 Inch. 0. .000100 . 000167 .600133 . 000200 . 000167 . 000166 .000167 . 000167 . 000266 . 000067 . 000(133 . 000067 .000033 . 000167 . 0003CO .000333 . 001307 .001733 . 001600 . 002000 . 002000 . 002134 . 002566 . 002600 . 002734 . 003100 . 003700 .003200 . 003733 .0017 .0033 .0100 .0167 .0286 Inch. 0. 0. Inch. 0. Initial load, i:iastic limit. Tensile strength. 0. 0. ^ ' ... Genm'al summary. Tensile strength per sqnare incli of original section pounds . . 87, 680 Elastic limit per square inch, of original section do... , 49.000 Elongation per inch after rupture ■ I. inch.. .1200 Elongation per inch under strain at elastic limit >....».. do... .001733 Bednctioh in diameter at point of rupture ...do... .134 Beductionin area after rapture, per centum of original section 41.9 Position of rupture ...".35 from neck Character of broken surface silky Elongation of inch sections ".04, ".06, "26" 90 lO-INCH WIEE-WOUND RIFLE. Marks, ^I'^y Diameter, /'. 564. Sectional area, .25 square inch. Gauged length, 3". Ko. 4225. Applied loads. EJongation per mch.. Successive ,elon^ation per luch. Permanent set. Successive permanent set. Remarks. Total. Per sqnare incn. Founds. 260 1,250 2, .500 3, 750 5,000 6,250 7,600 8,750 10,000 il, 260 11,500 11, 760 12, 000 12, 250 12, 500 12, 760 13,000 13, 250 13, 500 13, 750 14, 000 14, 500 15, 000 15, 600 16, 000 16, 600 17, 000 17,500 18, 000 18,500 19, 000 19, 500 20, 000 20, 500 21, 000 21,500 22, 000 22,500 22, 780 Founds. 1, 000 5,000 10,000 - 13,000 20, 000 25, 000 30, 000 35, 000 40, 000 45, 000 46, 000 • 47, OOO 48, 000 49, 000 60,000 51, 000 52, 000 63, 000 54, 000 55, OOO 56, 000 58, 000 60, 000 62, 000 64, 000 66, 000 68, OOO 70, 000 72, 000 74, 000 76, ooa 78, 000 80, 000 82, 000 84,000 86, 000. 88, 000 90, 000 91, 120 Inch. 0. .000133 . 000333 .000500 . 000667 . 000833 . 001033 .001267 .001467 . 0017C0 . 001767 .001833 . 001900 . 001933 . 002033 . 002067 .002267 .002400 . 002733 . 003067 .003667 .005267' . 007167 . 008600 . 010600 . 012600 .015233 . 017167 . 019600 . 022000 .025267 . 028933 . 032333 .0360 .0383 .0433 . 0533. .0667 Inch. 0. .000133 . 000200 . 000167 .000167 .000166 . 000200 .000234 . 000200 . 000233 .00006^ . 000066 . 000067 .000033 . 000100 .000034 . 000200 .000133 .000333 . 000334 . 000500 .001700 .001900 . 001433 . 002000 . 002000 . 002633 .001934 . 002433 .002400 . 003267 . 003666 . 603400 . 002667 .0033 .0050 .0100 .0134 Inch. 0. 0. iTUlh. 0. Initial load. Elastic limit. Tensile strength. 0. . 000067 . 000067 ~ General summary. Tensile strength per sqnare inch of original section pounds.. 91,120 Elastic limit per sqnare inch of orlftinal section: do... 51,000 Elongation per inch after rupture...'. inch.. .0867 Elongation per inch under strain at elastic limit do... .002067 Keductidn in diameter at point of rupture do... .054 Keductionin area after rupture, per centum of original section '. 18.3 Position of rupture ".4 from neck Character of broken surface. . . granular, flaky surface, 70 per cent, j dull, smooth surface, 30 per cent Elongation of inch sections , ".15*, ",06, ".05 10-INCH WIRE-WOUND RIFLE, BlN» A. 91 No. 3994. Marks, "^^^'^ Diameter, ".564. Sectional area, .25 square inch. Gauged length, 4". Applied loads. Elongation per inch; Successive elongation per inch. Permanent set. Suooeasive permanent set. Eemarljs. Total. Per-sqnare inoh. Povmde. 250 1,250 2,500 6,000 7,600 10, 000 11,250 12, 600 12,750 13,000 13,260 13, 600 13,750 14,000 14, 260 14, 600 14,750 15, 000 15,500 16, 000 16,500 17,000 17,600 27, 820 Pounds. 1,000 6,000 ! 0,000 20, 000 30, 000 40,000 46,000 60,000 61,000 52, 000 63,000 54,000 56,000 56, 000 57, 000 68,000 ' 69,000 60.000 62, 000 64,000 .66, 000 68, 000 70, 000 111, 280 Inoh. 0. .000125 .000326 . 000660 .001000 . 001325 .001450 . 001675 .001700 . 001750 .001776 . 001826 .001875 . 001050 .002000 .003100 .002200 .002326 .002876 .003260 .004125 .005260 . 006575 Inch. 0. .000124 . 000200 .000325 .000350 . 000325 . 000126 .000226 . 000025 . 000060 . 000025 .000050 . 000050 .000075 . 000050 . 000100 . 000100 .000126 . 000350 . 000576 .000875 . 001125 . 001325 Inch. 0. 0. • Inch. 0. Initial load. ISlaatic limit. Tensile strength. 0. .000025 "'.'600625" General summary. Tensile strength per sqnare Inch of original section ponnds- . ^li^stic limit per sqnare inch of original section do. .. fjlongation per inch after rapture inch.. JSlqngation per inch under strain at elastic limit ^. do.,. Heductionin diameter at point of rupture ^ -.do... Kedaction in area after rupture, per centum of original section Position of rapture '. ^- 2".lfrom neck Character of broken surface ..granular; small dull spot near the circumference Elongation of inoh sections ". 05, ". 15, ". 10, ". 06 111, 280 67, 000 .090 . 00200a .054 18.3 92 10-INCH WIRE-WOUND EIFLE. No. 3995. Marks, "^^f- A Diameter. ".564. Sectional area, .25 square inch. j&auged length, 4". Applied loads. Elongation per inch. Snccessive elongation per inch. FeEmanent set. Saooessive permanent set Eemarks. Total. Per square incli. Poimds. ■ 250 1,250 - 2,500 5,000 V,50fl 10,000 11,250 12,500 12, 750 13, 000 13, 250 13,500 13, 750 14, 000 14,250 14, 750 15, 250 15, 750 16, 230 16,750 27, 040 Ttmnii. 1,000 6,000 10, 000 20,000 30, 000 40, 000 45, 000 50, 000 51, 000 52, 000 53, 000 54,000 55,000 56, 000 67,000 59,000 61, 000 -63,000 65, 000 67, 000 108, 160 Inch. 0. .000075 . 000200 . 000475 . 000825 . 001123 .001300 .001550 . 001600 .001650 . 001700 . 001775 .001875 . 002000 .002125 •^.002550 .093200 .004250 . 005500 .007075 Inch. 0. .000075 . 000125 .000275 .000350 .000300 .000175 .000250 .000050 . 000050 . OOOOliO .000075 . 000100 .000125 . 000125 . 000425 . 000630 .001050 . 001230 . 001575 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. 0. 0. General summary. Tensile strength per square inch of original section pounds.. 108,100 JSlasUclimit per square inch of original section do... 51,000 ISlongation per inch after rupture - inch.. .1175 BlongatioD per inch under strain at elastic limit do... . 001775 Beduction in diameter at poiotuf rupture do... .064 Beductlon in area after rupture, per centum of original section 21.4 ifosition of rupture j 1".8 from neck Character of broken surface granular, dull spot at the circumference Elongation of inch sections - ".09, "20*, ".10, ".08 10-INCH WIKE-WOUND EIFLE. 93 No. 3697. Marks, i^XS'*- Diameter, ".564. Sectional area, .25 square inch. Cranged length, 4". / Applied loads; Elongation per inch. Ctucceesive elongation per inch. Permanent set. Successive permanent ; set. '■ Bemarks. Total. Per square inch. PoiOids. 260 1,250 2,500 5,000 7,600 10, 000 11,250 12, 500 12, 750 13, 000 13,250 ,13,500 . 13,750 14,000 14,500 ^ - 15,000 ' 15,600 16, 000 16,-SOO, " •26,520 Pounds. 1,000 5,000 10, 000 20, 000 30, 000 40,000 45, 000 60, 000 51,000 52,000 53,000 54,000 55, 000 66, 000 68, 000 60,000 62,000 64,000 66, 000 -106,080 Inch. 0. . 000100 .000300 . 000625 .001000 .001325 .001600 .001800 .001850 . 001925 . 002000 .002175 . 002375 .002625 .003300 .004250 . 005250 . 006550 .008126 Inch. 0. .000100 .000200 .000325 .000375 .000325 .000175 . 000300 .000050 . 000075 .000075 .000175 .000200 . 000250 . 000675 . 000950 . 001000 . 001300 .001575 Inch. 0. «0. Inch. 0. Initial load. Elastic limit Tensile strength. .000100 .000100 .000100 ■ 0. General summary. Tensile strength per square inch of original section pounds.. 106,080 Elastic limit per square inch of original section ....do... 53,000 Elongation per inch after rupture inch.. .1125 Elongation per inch under strain at elastic limit do... .002000 Eeductioniu diameter at point of rupture - do... .064 Kednction in area after rupture, per centum of original section 21.4 Position of rupture 1" .45 from neck Character of Droken surface granular, dull spot at the circumference Elongation of inch sections ". 05, ". 09, "19», ". 12 94 10-INCH WIRE-WOUND EIFLE. Hoop C3. No. 4302. Marks, "^?'f'» Diameter, ''.567. Sectional area, .252 square inch. Gauged length, 4". Applied loads.. mongation per inch. SnccessiTe elongation perjnoh. Permanent set. Successive permanent set. Bemarks. Total. Per square inch. Pounds. 252 1,260 2,520 2,780 5,040 6,300 7,056 7,660 7,812 8,064 8,316 8,568 8,820 9,072 9,324 9,576 9,828 10, 080 10, 584 11, 088 11, 592 12, 096 12, 600 13, 104 13,608 14,112 14,616 15, 120 15,624 16, 128 16, 632 16, 640 Pounds. 1,000 5,000 10, 000 15, 000 20, 000 25, 000 28, 000 > 30, 000 31, 000 32, 000 33, 000 34,000 35, 000 36,000 37, 000 38, 000 39, 000 40, 000 42,000 44, 000 46, 000 48, 000 50, 000 52, 000 54, 000 56, 000 58, 000 60, 000 62, 000 64,000 66, 000 66,030 Inch. 0. .000175 . 000300 . 000475 .000650 . 000775 . 000850 .001250 . 009500 .011125 .011750 . 012750 .014000 . 015425 . 016625 .018000 .019125 . 020750 .0225 .0250 .0275 .0300 .0375 .0425 .0475 .0550 .0675 .0800 .0950 .1175 .1775 Inch. 0. .000175 . 000125 .000175 . 000175 . 000125 .000075 . 000400 .008250 . 001625 .000625 . 001000 .001250 . 001425 .001200 .001375 . 001125 .001625 . 001750 .0025 .0025 .0035 .0075 . 0050 .0050 ■ .0075 .0125 .0125 .0150 .0226 .0600 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. .000575 . 000576 - General summary. Tensile strCDgth persqnare inch of original section pounds.. 66, 030 Elastic limit per square inch of original section do... 28, 000 Elongation per incli after rupture ....inch.. .2700 Elongation per inch under strain at elastic limit do . . . . 000350 Beductionin diameter at point of rupture do... .137 Kednction in area after rapture, per centum of original section 42.4 Position of rupture ^ 2".25 from neck Character of broken suriace, granular, 50 per cent. ; silky, 50 per cent. Opened cracks in sui'face of stem. Elongation of inch sections ".18, ".25 ".43*. ".22 10-INCH WIEE-WOUND KIFLE. 95 No. 4303. Marks, " ^f^'^' Diameter, "".566, Sectional area, .252 square inch. Gauged length 4". "Applied loads. Elongation per inch. Saooessive elongation per inch. Pcrinanent set. Saocessive permanent set. Bemarks. Total. Per square inch. Pounds. 252 1, 260 2, 520 3,780 5,040 6,300 6,552 6,804 7,056 7,308 7,660 8,064 8,668 9,072 9,676 10, 080 10, 584 11,088 11, 592 12,096 12j600 13,104 13, 608 14,112 14, 616 15,120 15, 624 16, 128 16,470 Pounds. 1,000 5,000 10, 000 16, 000 20, 000 25, 000 26, 000 27, 000 28, OOO 29^000 30, 000 32, 000 34,000 36, 000 38, 000 40, 000 42,000 44; 000 46, 000 48, 000 60, 000 52,000 54, 000 56, 000 58, 000 60, 000 62, 000 64, 000 65,360 Inch, 0. . 000160 .000300 .000450 .000650 - . 000325 .000875 . 000925 .001200 . 008375 .009550 .011126 . 013500 . 016460 .018260 . 021000 .0226 .0250 .0275 .0300 .0400 .0475 .0550 .0600 .0700 .0775 .0960 . . 1250 .1800 Inch. 0. .000150 . 000160 .000150 . 000200 . 000175 .000050 .000050 . 000275 . . 007175 .00)175 . 001575 . 002375 . O019.'>0 . 002800 . 002750- .0015 .0026 ,0025 .0025 .0100 . 0075 .0076 .0030 . 0100, .0075 . ona .0300 .0550 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. 0. ^ General summary. Tensile^trength per square inch of original seotJon pounds.. 65,360 Elastic limit per square inch of original section do... 27,000 Elongation per inch after rapture inch.. .1800 Elongation per inch under strain at elastic limit..... do... .000025 Eednction in diameter at point of rupture do... .086 Eeduotion in area after rupture, per centum of original section ..: 28.2 Position of rupture ".35 from neck Character of broken surface granular, dull spot at circumference Elongation of inch sections ".15, ".16, ".18, ".23 96 10-INCH WIRE -WOUND KIFLB. Hoop O4. No. 4304. Marks, "?^^C' Diameter, ".566. Sectional are&., .252 square inch. Gauged length, 4". Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. Successive permanent set. Kemarks. Total. Per square inch. Pounie. 252 1,260 2,520 3,780 5,040 6,300 7,560 7,812 8,064 8,316 8,668 8,820 9,072 9,324 9,676 9,828 10, 080 10, 684 11, 088 11, 592 12, 096 12,600 13, 104 13, 608 14, 112 14,616 15, 120 15, 624 16, 128 16, 632 17, 136 17, 640 17, 630 Pounds. 1,000 6,000 10, 000 15, 000 20, 000 25, 000 30, 000 31, 000 32, 000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 42, 000 44,000 46, 000 48, 000 60, 000 62, 000 64,000 56, 000 58, 000 60, 000 62, 000 64, 000 66, 000 68, 000 70, 000 70, 190 Inch. 0. .000150 . 000300 .000600 . 000676 .000800 . 001025 . 001050 . 001125 .001176 .P01225 . 001260 . 001276 . 001300 . 001450 .012125 .014176 . 016000 . 018750 .021875 . 024500 . 028500 .0325 .0S75 .0425 .0475 .0650 .0625 .0760 .0875 .1076 .1650 .2000 Inch. 0. . 000150 .000150 . 000200 . 000176 .0U0125 . OOOi.25 . 000026 .000075 .0000.^0 . 000060 .000025 . 000025 . 000026 .000150 . 010675 . 002050 . 001825 .002750 .003125 . 002626 . 004000 .0040 .0050 .0050 .0060 .0075 .0076 .0125 .0125 .0200 .0575 .0360 Inch.' 0. 0. ' Inch. , 0. Initial load. Elastic limit. Tensile strength. / .000025 .000025 General summary. Tensile strenstli per square inch of original section pounds.. 70,190 Elastic limit per square inch of original section do-.- 37,000 Elongation per incli after rupture inoU-. .2650 Elongation per inch under strain at elastic limit ;.... do..- .001300 Keductionin diameter at point of rupture ■_ do... . 156 Beductionin area after rupture, per centum of original section 47. 6 Position of rupture 1".50 from neck Character of hroken surface i.. fine, silkv Elongation of inch aeotious ..".17,".21,".32,*",3(|'' iO-INCH WIRE-WOUND RIFLE. No. 4305. 97 Marks, "^^i*^' Diameter, ".565. Sectional area, .25 square inch. Gauged length, 4". Applied loads. Elongation per mob. Successive elongation per inoli. Permanent set. Saooessive permanent sot. Kemarks. Total. Per Bquare inch. ^ Founds. 250 1,260 2,500 3,750 5,000 6,250 7,500 7,750 8,000 8,250 8,600 8,750^ 9,000 9,250 9,500 9,750 10, 000 10, 250 10, 600 10, 750 11,000 11, 600 12, 000 12, 600 13, 000 13, 500 14,000 14, 600 15,000 15, 500 16, 000 16, 600 17, 000 17,500 17,760 - Founds. 1,000 6,000 10, 000 16, 000 20,000 26, 000 30, 000 31, 000 32, 000 33, 000 34, 000 36, 000 . 36,-000 37, 000 38, 000 39, 000 40,000 41, 000 42, 000 43,000 41, 000 16, 000 48, 000 60, 000 62, 000 54, 000 56, 000 58, OOO 60, 000 62, 000 61, 000 66, 000 68, 000 70, 000 71, 010 Inch. 0. . 000125 .000250 , 000150 . 000650 .006800 .000975 . 001000 .001060 .001125 .001175 . 001200 .001260 .001300 . 001375 .011260 . 012125 .012925 . 014000 • .015000 . 018750 .019251) . 021875 . 026000 .029750 .033500 .038125 .0125 . 0600 .0575 .0675 .0800 .1000 .1250 .1950 Inch. 0. .000125 . 000125 .000200 . 000200 . 000150 .000175 .000025 .000050 .000075 .000050 .000025 .000050 .000050 .000075- .009875 . 000875 .000800 . 001075 ..001000 . 001750 . 002500 . 002626 .001125 .003750 . 003750 . 001625 .004375 .0075 .0076 .0100 . 0125 .0200 .0260 .0700 , Inch. 0. 6. Inch. 0. Initial load. Elastic limit. TensUe strength. 0. General summary. Jensile strength per square inch of original section pounds.. 71,010 Slastio limit per square Juoh of original section do... 38,000 ^Elongation per inch after rupture inch.. .2625 Elongation per inch under strain at elastic limit do... .001375 •ilednfition in diameter at point of rapture .do... .155 -Bfiduotion in area after rupture, per centum of original section 47.2 JPositlon of rupture l".efrom neck ".Character of broken surface j silky oblique lElongation of iuoh sections .".25, ".38*, '",21, ".17 ' H. Ex. 165 7 98 10-INCH WIRE-WOUND RIFLE. No. 4306. Marks, "^,^''« Diameter, ''.567 Sectional area, .252 square inch. Gauged length, 4". Applied loads. Total. Per square Incn. Elongation per incli. SacoesBive elongation, per inch. Permanent set. SncoessiTe periuaoent set. Bemarks. Pounds. 252 1,260 2,520 3,780 5,040 6,300 7,560 8,820 9,072 9,321 9,576 9,828 10,080 10, 332 10, 584 11,088 11, 592 12, 096 12, 600 13. 104 13, 608 14, 112 U, 616 15, 120 IS, 624 16, 128 16, 632 17, 136 17, 640 IS, 144 18, 648 19, 152 19, 656 19, 810 Pounds. 1,000 5,000 10, 000 15, 000 20, 000 , 25,000 30, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 41, 000 42, 000 44,000 46, 000 48,000 50, 000 52, 000 54, 000 56, 000 58, 000 60, 000 62, 000 64, 000 66, 000 68, 000 70, 000 72, 000 74, 000 76, 000 78, 000 78, 610 Inch. 0. . 000150 .000300 .000475 . 000650 . 000800 .000975 .001200 . 001250 .001275 . 001300 .001325 .001425 .006560 . 009950 .011875 .013750 . 015500 .018125 . 021000 .023200 . 026250 .029125 . 031250 .0375 .0425 .0475 .0525 .0575 . 0700 .0800 .0976 .1250 .1575 Inch. 0. . 000150 . O0OI6O . 000175 . 000175 .000150 . 000175 . 000225 .000050 . 000025 .000025 .000025 .000100 .005125 . 003400 . 001925 . 001875 .001750 .002625 . 002875 . 002200 .003050 .002876 . 002121 . 006250 .0050 .0050 .0050 .0050 .0125 .0100 .0175 .0275 .0325 iTich. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strengtli. General tnmmary. Tensile strength per square inch of original section ponnds.. 78,610 Elastic limit per square inch of original section ^ do... 39.000 Elongation per inch after rupture inch.. ,1725 Elongation per inch under strain at elastic limit : do... .001325 ■ Seduction in diameter at point of rupture , do... .087 Keduction in area after rupture, per centum of original section ;....'. 28.2 Position of rupture ".75 from neck Character of broken surface flue granular, 60 per cent. ; silky serrated, 40 per cent. Elongation of inch sections , ".25*, ".16, ".16, ".18 10-INCH WIRE-WOUND EIFLE. Hoop O5. 99 No. 4307. Marks, lo^^Cs Diameter, ''.567. Sectional area, .252 square inch. Gauged length, 4". Applied loads. Total. Per square Inch. Elongation per inoli. Suooeasive elongation per inch. Permanent Bet. Successive peimapent set. Kemarks. Pounda: 252 !,2C0 2,620 3,780 5,010 6,300 7,560 7,812 8,064 8,316 8,568 8,820 9,073 9,324 9,676 9,838 10, 080 10,584 11, 088 11, 692 12, 096 12,600 13, 104 13, 60S 14, 112 14,616 15, 120 16, 400 Fojtnds. 1,000 5,000 10, 000 15, 000 20, 000 25, 000 30, 000 31, 000 32, 000 38, 000 34, 000 36, 000 36, 000 37, 000 08, 000 39, 000 40, 000 42, 000 44, 000 46, 000 48, 000 60, 000 62, 000 54, 000 56, 000 58, 000 60, 000 61, 110 Inch. 0. .000125 . 000275 . 000450 . 000675 . 000800 . 001000 . 001025 .001(150 . 001075 .001125 . 001176 . 001225 . 001275 . 004000 . 005500 . 011600 .020625 . 024000 .028125 . 032600 .0400- . 0450 .0500 .0575 , .0700 .0825 Inch. 0. . 000125 .000150 .000175' .000225 . 000125 . 000200 . OOOO25 . 000025 . 000025 . 000050 . 000060 . OQ0050 . 000060 . 002726 . 001500 . 006000 . 009125 . 003375 .004125 . 004375 .0075 .0050 .0050 .0075 .0126 .0125 Inch. 0. 0. Inch. Initial load. Elastic limit. Tensile strength. General summary. Tensile strength per square inch of original section pounds.- 61,110 Elastic limit per square inch of original section.. do... 37, 000 Elongation per inch after rupture inch.. . 1150 Elongation per inch under strain at elaistio limit do... ; 001275 Kednction in diameter at point of rapture. do... ' .067 Keductionin area aft&r rupture, per centum of original section 22,2 Position of rupture 2" from neck Character of broken surface - i silky Elongation of inch sections ".10,".17*,".10/'.09 100 10- INCH WIEE-WOUND RIFLE. No. 4308. Marks, "^^^c. Diameter, ''.566. Sectional area, .252 square inch. Gauged length, 4". Applied loads. Elongation per inch. Successive elongation per inch. JPermanent set. Successire permanent set. Remarks. Total. ter square inch. Pounds. ■262 -1,260 2,520 3,780 5,040 6,300 7,660 8,820 9,072 9,324 9,576 9, 828 10, 080 10, 332 . 10,584 10, 836 11, 088 11,602 ■ 12, 096 12, 600 13, 104 13, 608 14, 112 14, 616 15, 120 15, 650 Pounds. 1,000 5,000 10,000 15, 000 20, 000 25, 000 30, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 41, 000 42, 000 43, 000 44, 000 46, 000 48, 000 • 50, 000 52, 000 54,000 ,56, 000 58, 000 60, 000 61, 710 Inch. 0. ( . 000150 .000275 .000475 . 000625 .000775 . 000975 .001176 . 001225 . 001250 .001300 .001350 . 001400 . 023376 . 024960 . 020250 . 02*500 . 033926 . 038250 .0425 .0500 .0600 .0700 .0875 .1075 Inch. 0. .000160 . 000125 ' .000200 . 000150 . 000150 .000200 . 000200 . 000050 . 000025 . 000050 . OOOOSO . 000050 .021975 .001675 .001300 . 002250 . 005425 . 004325 . 004250 .0075 .0100 .0100 .0175 .0200 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. 0. 1 ' General summary. Tensile strength per square inch of original section poands.. 61.700 Elastic limit per square inch of original section. do... 40,000 Elongation per inch after rupture inch. . . 1700 Elongation per inch under strain at elastic limit do... .001400 Eeduction in diameter at point of rupture do... . 116 Keductionin area after rupture, per ceutum of original section 36.9 Position of rupture 1". 35 from neck Character of broken surface silky; metal ruptured at a ora^ct which extended from the circnm- ference to the center of the specimen. The walla of the crack were dark colored. Elongation of inch sections ; ".13, ".15, ".15, ".25* 10-INCH WIRE-WOUND RIFLE. 101 No, 4309. Marks, i"^^^*'' Diameter, ''.567. Sectional area, .252 square inch. Gauged length, 4". . . Applied loads. Elongation Successive elongation per inch. Permanent set. Succeasive permanent set. Bematks. Total. Per sqnare inoli. per Inch. Pounds. 252 1,260 2,520. ■3, 780 5,040 6,800 7, 560 8,820 9,072 9,324 9,676 9,828 10, 080 10, 332 10, 584 11, 088 11, 592 12, 096 12, 600 13, 104 13,608 14, 112 14, 616 15,120 16, 624 16, 128 16, 270 Pounds. 1,000 6, 000 10, 000 15, 000 20, 000 25, 000 30, UOO 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 41, 000 42, 000 44,000 46, 000 48, 000 50, 000 52, 000 54, 000 56, 000 58,000 60, OOD 62, 000 64,000 64, 560 Inch. 0. .000150 . 000300 . 000450 . 000675 .000825 .001000 .001200 . 001250 . 001275 .001300 . 001375 . 008950 . 011125 . 019450 . 022450 . 026125 . 029750 . 034750 .040250 .0475 .0525 .0625 .0750 .0950 . 1175 .1500 Inch. 0. .000150 . 000150 . 000160 . 000225 .000150 .000175 . 000200 . 000050 . 000025 . 000025 .000075 . 007575 . 002175 . 008325 . 003000 . 003675 . 003025 . 005000 . 005500 . 067250 .0050 .0100 .0125 .0200 .0225 .0325 Inch. 0. 0. Inch. .0 Initial load. Elastic limit. Tensile strength. 0. General summary. Tensile strength per sqnare inch of original section ..pounds.. 64,560 Ela^stio limit per sqaareincliof original section do... 39,000 Blongation per inon after rupture — .! .; in ch . , . 1500 Elongation per inch under strain at elastic limit ........i do... .001375 Kednctionin diameter at point of rupture ..do... .087 deduction in area after rapture, per centum of original section ^ 28. 2 Position of rupture -. .-...-.".35 from neck. Character of broken surface silky ; contains two small spots of light colored motal Elongation of inch sections - * ....".10, ".11, ".16, ".23* 102 10-INCH WIEE-WOUND EIFLE. Hoop Ce. Ko. 4310. Marks, ""^'.S^' Diameter, ".566. Sectional area, .252 square inch. Gauged length, 4", Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. Successive permanent set. Bemarks. Total. Per square inch. Pounde. 252 1,260 2,620 3,780 5,040 6,300 7,560 8,820 9,072 9,324 9,576 9,828 10. 080 10, 332 10, 584 11, 088 11, 692 12,096 12,600 13, 104 13, 608 14, 112 14,616 15, 120 15,624 16, 128 16, 632 17, 136 Pmmda. 1,000 5,'000 10,000 16, 000 20, OOO 25, 000 30, 000 35,000 36,000 37,000 38, 000 39, 000 40,000 41,1)00 42, 000 44,000 46, 000 48,000 60, 000 62,000 54,000 56, 000 58, 000 60, 000 62, 000 64,000 66, 000- 68,000 Inch. 0. .000150 .000325 .000500 . 000675 . 000800 .001000 . 001175 . 001225 .001250 .001275 .001300 . 005375 .007925 .015750 .022625 .025300 . 029750 .034250 . 038125 .0450 .0600 .0650 .0676 .0775 .0925 .1175 .1600 Inch. 0. . 000150 .000175 ■. 000175 . 000175 .000125 . 000200 .000175 .000050 .000025 .000025 . 000025 .004075 . 002550 .007825 . 006875 .002675 . 004450 .004500 . 003875 . 006875 .0050 .0050 .0125 .0100 .0150 . 0250 .0425 Inch. 0. 0. Inch. , 0. Initial load. Elastic limit. Tensile strength. • 0. General summary. Tensile streDgth per square inch, of original section ..ponnds-- 68, Oj)0 Elastic limit per square inch of originalsection .do... 39,000 Elbngation per inch, after rupture ^ inch . - , 2050 Elongation per inch under strain at elastic limit , do.. .001300 Reduction in diameter at point of rupture , do.,- .096 Ileduction in area after rupture, per centum of original section 31.0 Position of rupture ".75 from neck Character of broken surface .1 '. silky, oblique Elongation of inch sections ".16, ",18/M8, ".30* 10-INCH WIEE-WOUND EIFLE. 103 No, 4311. Marks, "^,i(°« Diameter, ''.567. Sectional area, .252 square inch. Gauged length, 4". Applied loads. SUon^ation per inch. Sttocessive elongation per inoh. PermaneHt set. Sacessive permanent sot. Semarks. Total. Per square inch. Pounds. 252 1,260 2,520 3,780 5,040 6,300 7,560 7,812 8,061 8, 316 8,568 8,820 9,072 9,324 , 9,576 9,828 10,080 -10,332 10, 581 11, 088 11, 692 12,096 12,600 13, 101 ' 13,608 11, 112 11, 616 15,120 15,621 16, 128 16,632 17,136 17, 610 17, 700 Pmmdt. 1,000 5,000 10, 000 15, 000 20,000 25, 000 30, 000 31,000 32, 000 33,000 31,000 36,000 36, 000 37, 000 38, 000 39,000 10,000 H, 000 12, 000 11,000 16, 000 48,000 60,000 62, 000 61, 000 56, 000 58, OOO 60, 000 62, 000 61, 000 66, 000 68,000 70,000 70,240 iTieh. 0. .000125 .000300 .000176 . 000650 .000800 .000975 .001026 . 001060 .001076 .001125 .001160 . 001200 .00L225 .001276 ' .001300 . 001350 .006250 . 016750 .019700 .022625 .026500 .029625 .033750 .038125 .013625 .0500 .0560 .0675 .0776 .0925, .1150 . .1660 jMCft. 0. .000126 . 000176 . 000175 .000175 . 000150 . 000175 .000050 . 000025 .000025 . 000060 .000026 . 000050 .000025 .000060 .000025 . 000060 .001900 .010600 . 002950 .002926 . 002876 .004125 . 001125 . 001375 . 006500 .006375 .0050 .0125 .0100 .0160 .0225 .0100 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. 0. - ' General summary. Tensile strength per sqnare inch of original section ponnds.. 70,210 Elastic limit per square inch of original section : do... 40,000 Elongation per inch after rupture inch.. .1925 Elongation per inch under strain at elastic limit do... .001350 Seduction in diameter at point of.mpture do... .107 Seduction in area after rupture, per centum of original section 84. 1 Position of rupture ; l".7from neck Character of broken surface silky Elongation of inch sections,...-. : ..".16, ".16, ".27*, ".18 104 10-INCH WIRE-WOUND RIFLE. No. 4312. Marks, 10^ «■«= Diameter, ".567. Sectional area, .252 square inch. Gauged length, 4". Applied loads. Elongation per incli. Sncceaaiye elongation per inch. Permanent set. Successive permanent set. Eemaris. ' Total. Per sqaai-e inch. Pounds. 252 1,260 2,520 3,780 5,040 6,300 7,680 7,812 - 8, 084 8,316 8,568 8,820 9,072 9,324 9,576 9,828 10, 080 10, 332 10, 584 11, 088 11,692 12, 096 12, 600 13, 104 13,608 14, 112 14, 616 15, 120 16,460 Pounds. 1,000 6,000 10, 000 15, 000 2u, 000 26, 000 30, 000 31,000 32, 000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 41, 000 42,000 44, 000 46, 000 48, 000 60, 000 52, 000 ^ 54,000 66, 000 68, 000 60, 000 61,350' Jnch. 0. . 000125 . 000300 . 000450 .000625 .000800 . 000975 . 001000 . 001026 . 001075 .: 001125 .001175 .001225 .001250 .001300 .001375 . 008200 . 010000 .019700 . 022200 . 025750 . 029460 .033750 . 037375 . 043000 .0476 .0575 . 0700 JjiGh. 0. . 000125 .000175 . 000160 . 000175 . 000175 . 000175 . 000025 ,000026 . OOOOBO .000050 . 000O60 . 000060 . 000026 .000050 .000075 - . 006825 . OOIROO . 009700 . 002500 . 003650 . 003700 . 004300 . 003625 .005625 .0045 .0100 .0125 Inch. 0. 0. Inch.. 0. Initial load. Elastic limit. Tensile strength. 0. , • General summary. Tensile strength per square inch of orieinal section pounds.. Elastic limit per s^nareinch of origin^ section , do... Eiongation per inch after rupture , inch.. Elongation per inch under strain at elastic limit do... Reduction in diameter at point of rupture - 7 do... Bednction in area after rupture, per centum of original section Position of rupture ".76 from neck Character of broken surface silky; specimen tore apart, fracture beginning at a dull yellowish spot at circumference. • Illongation of inch sections ;...?'.17*,".08, ".08, ".07 61, 360 39, 000 .1000 .001375 .097 31.0 10-INCH WIRE-WOUND RIFLE. 105 3«DOMOOOSCDeOOCO'«NtDCceooc-moor-o omcon knoommooooco 5?a 1^ ^ bJttPpC) tri on dJ oooooooooooooooooooooooooo bocoffioamc^t oc-o ■* o oo« H OCO iH O (O ooooooooo o <& P -So ff co" ooooooooooooodooooooooooo ooooooooo o^oo^oo^oooao^o<3ooooooo^o ooooo^o^cs (^^ooooo:t>ooo>Oi-Oi--4a>0> 106 10-INCH WIRE-WOUND EIFLE. I I o I o "§^ I O O « B i ^ 'T^ p la a - ja S o fl 8* oooo^o o ^ooooooo "So S B s flow 3'Sl a tf * •^ lO «D l> 00 C6 O i-l rH iH ^ »-l ^ M 00 00 00 00 CO CO 00 12-INCH B. L. RIFLE, NO. 1. SPECIMENS FROM TUBE, JACKET, HOOPS, GAS CHECK, AND BREECH BUSHING. 107 <- 7 '1^ I i^^-^ -^ - >S^t HE)c.../^j:. ...51 2 12-,INCH B. L. EIFLE NO, 1. SPECIMENS FROBT TUBE, Bbbboh End, No. 3887. 109 Marks, ^^^^ Diameter, ".564. Sectional area, .25 square inch. Gauged length, 4". " Applied loads. Elongation per inch. Sucoessive elongation per mch. Permanent set. Snccessive permanent Bet. Kemnrks. Total. Per square inch. POVMdi. 250 1,250 2,500 5,000 6,250 7,500 8,750 9, 000. 9,260 9,500 9,750 10,000 10,250 10, 500 10, 750 11,000 11,250 11,600 12,000 ,i2,.600 13,:000 ■ 13, 600 14, 000 14,600 16,000 : 15,600 , 16, 000 16,600 17, 000 17, 600 .18,000 • 18,600 19,000 .19,500 19,810 18,100 Pounda. 1,000 5,000 10,000 20,000 26, 000 30, 000 36,000 36,000 37, 000 38, 000 , 36,000 40, OOO 41, 000 , 42, 000 43, 000 44, 000 45, OOO 46i000 . 48,000 50, 000 52,000 ' 54, 000 66,000 .1 58, 000 60,000 62, 000 64,000 66, 000 ' 68, 000 70,000 , 72, 000 74, 000 76, 000 78, 000 79, 240 .Inch. 0. . 000126 .000300 . 00065C . 000800 .001025 . 001260 .001275 .001300 .001375 .001460 .001600 . 001625 .001825 . 002000 . 002300 .002660 . 003376 . 004900 . 0072.50 . 009700 . 012000 . 014750 .017450 . 020250 .023375 . 026875 . 030500 . 035000 .040375 .0500 .0550 .0650 .0826 .1150 Inch. 0. . 000125 .000175 . 000350 . 00U150 . 000225 - . 000225 . 000050 . 000025 .000075 . 000075 .000060 . 000125 .000200 .000175 .000300 . 000350 .000725 . 001525 .002360 . 002450 . 002300 . 002750 . 002700 . 002800 .003125 . 003500 .003625 . 004500 . 005375 .009625 .0060 .0100 .0175 .0325 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strengtli. At time of rupture. 0. .000025 .ooopso .000025 .000025 .000225 .000175 General summary. .Tensile etrength per sqnare inch of original section ponnds.. 7d,240 Elastic limit per square inch uf original section do... 40, UOO Elongation pur inch after rnptare %.-• inch ■ . 1425 .Elongation per inch under strain at elasticlimit do:.. .001500 Redaction in diameter at point of rnptare ..do,.. .114 deduction in area after rupture, per centum of original section 36.4 Position of rupture ., .".25 from ueck Character of broken surface.... dull silky, oblique, contains numerous parallel lines of bright luster arranged nearly normal to the axis of the specimen. These lines appear to result from the separa- tion of the metal at cylindrical cavities ".01 diameter by ".04 to ".08 long. Fine cracks developed in surface of stem. Elongation of inch flections - .- ".10, ".08, ".09, ".30* 110 IS-INCH B. L. EIFLE, NO. 1. No. 3888. Marks, fK^ Diameter, ".564. Sectional area, .25 square inch. Gauged length, 4". Applied loads. Elongation per inch. Snooeselve elongation per inoli. Permanent set. Successive permanent set. Hemarlis, Total. Per square Incu. Pounds. 250 1,250 2,500 5,000 6,250 7,600 7,750 8,000 8,250 8,600 ■ 8,760 9,000 9,250 9,600 9,750 10,000 10, 260 10, 600 10, 750 11, 000 11, 25b 11, 600 12,000 12, 600 13,000 13, 500 14, 000 14, 500 15,000 15, 600 16,000 16, 600> 17, 000 17, 500 18, 000 18, 600 19, 000 19, 500 19, 690 17, 600 Pounds. 1, 000 5,000 10,000 20, 000 26, 000 30, 000 31, 000 32, 009 33, 000 34,000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 41, 000 42, 000 43, 000 44,000 46, 000 46, OdO 48, 000 50, 000 52, 000 64, 000 66, 000 68, 000 60, Olio 62,000 64,000 66, 000 68, 000 70,000 72, 000 74,000 76, 000 78, 000 78, 360 Inch. 0. .000125 .000300 . 000600 . 000775 .000975 .001000 . 001025 .001050 . 001075 . 001100 . 001150 . 001175 . 001225 .001250 . 001300 . 001400 . 001600 . 002750 .004200 .005425 .007075 . 009500 . 011275 . 013926 .016250 .018960 . 021875 .025500 . 028600 .032500 .036875 -.041875 .045960 . 0550 .0625 .0750 .1000 .1300 Inch. 0. .00012B . 000175 . 000300 .000175 .000200 .000025 . 000025 . 000025 .000025 .000025 .000050' .000026 .005050 . 000025 . 000050 . 000100 .000100 .001260 . 001450 .001225 .001650 .002425 .001775 . 002650 .002325 .002700 .002925 . 003625 .003000 . 004000 . 004375 .005000 . 004075 .009060 . 0075" .0125 .0260 .1300 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. At time of rupture. 0. 0. ■ 0. . 606625 . 000025 General summary. Tensile strength per square inch of original section poands.. 78,360 Elastic limit per sqoareinch of original section do.,. 40,000 ' Elongation per inch after rupture inch.. . 1975- Elongation per inch under strain at elasticlimit do... .001300 Kednction in diameter at point of rupture do... .154 Eeduction in area after rupture, per centum of original section 47.2 Position of rupture "1.60 from neok Character of hroken surface silliy, irregular, a few bright linos shown which were oblique to the axis of the specimen. Opened cracks in the surface of stem. Elongation of the inch sections ".14, ". 41", ". 14, ". 10 12-INCH B. L. RIFLEj NO. 1. No. 3889. Ill Marks, ^2|,|t Diameter, ".564. Sectional area, .25 square inch. Gauged length, 4". Applied loads. Elongation per Inoli. SacoeBBiYe elonjjation per inch. Bermanent sot. SncceBsive permanent set. Eemarks. Total. Per square inch. ■ Pounds. 250 - 1, 250 ■ 2,500 5, 000 6,250 , 7, 500 7, 760- 8,000 8,250 ,8,600 8,750 9,000 9,250 9,600 9,750 10, 000 10, 600 11, 000 11, 500 12, 000 12, 600 13, 000 13, 500 14, 000 14, 600 15, 000 15, 600 16, 000 16, 600 17, 000 17, 600 17, 820 15, 100 Pov/nds. 1,000 5,000 10,000 20,000 26,000 30, 000 31, 000 32, 000 33, OOO 34,000 35, 000 36, 000 37, OOO 38, 000 39, 000 40,000 42, 000 44, OOO 46, 000 48, 000 50, 000 52,000 54, 000 66,000 58, 000 60, 000 62,000 64,000 66, 000 68, 000 70,000 71,280 Inch. 0. .000150 . 000275 .000625' . 000800 .001000 .001025 .001075 .001175 . 001276 . 001525 . 002500 .003025 .003875 ,004800 . 006275 . 008250 . 010500 . 013260 . 018125 . O1940O .022750 . 026376 .031000 .036625 . 041600 .048375 .0576 .0700 .0860 .1175 .1960 Inch. 0. . 000150 .000125 .000350 . 000176 . 000200 . 000025 . 000050 .000100 . 000100 . 000250 . 000975 .000525 . 000850 .000926 . 001475 . 001975 . 002260 . 002760 .002875 .003275 .003350 . 003625 .004625 . 004626 .X)05875 .006876 .009125 .0126 .0150 .0325 .0775 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. At time of rupture. 0. .000025 .000026 . 000475 .000450 . 004800 .004325 _ General summary. Tensile strength per square inch of original section pounds.. 71,280 Elastic limit per square inch of original section .do... 32,000 Elongation per inch after rapture .- inch.. .2500 Elongation per inch under strain at elastic limit do. .. .001076 BeduCtion in diameter at point of rupture > do... .15^ Beduction in area after rapture, per centum of original section 47. 2 Position of rupture 1" 50 from neck Character of broken surfaee, resembles that of B T, I, except bright lines are oblique to axis of speci- men. ^ Elongation of inch sections ".21, ".43,* ".20, ".16 112 Marts, .^^T^i^ Diameter, ".564. Sectional area, .25 square inch. Gauged length, 4". 12-INCH B. L, RIFLE, NO. 1. No. 3890. Applied loads. Elongation per mcli. SuccessiTe elongation per inch. Permanetit set. Successive permanent set. Eemarks. Total. Per square inch. Founds. 250 1,250 2,500 5,000 6,250 7,600 7,750 8,000 8,260 8,^600 8,750 9,000 9,250 9,600 9,750 - 10, 000 10, 250 10, 500 10, 750 11, 000 11, 260 11,500 12, 000 12, 500 13, 000 13, 500 14, lOO 14, 500 15, 000 16, 600 16, 000 16, 500 17, 000 17, 600 18, 000 18, 600 IB, 000 . 19, 500 17, 300 Pounds. 1,000 6,000 10, 000 28, 000 25,000 30, 000 31, 000 . 32, 000 33, 000 34, 000 35, 000 36, OOO 37, 000 38, 000 39, 000 40, 006 41, 000 42, 000 43, 000 44, 000 45, 000 46, 000 48, 000 50, 000 63, 000 64, 000 66, 000 58, 000 60, 000 62, 000 64, 000 66, 000 68, 000 70, 000 72, 000 74, 000 76, 000 78,000 Inch. 0. . 000075 .000250 . 000560 . 000750 ..000975 . 001000 .001025 . 001050 . 001100 .001)60 . 001200 .001250 .001300 .001400 .001525 .001675 . 001776 .001960 .002276 .002725 .003675 . 005600 .008125 .011000 . 013125 . 015775 .018750 .021875 . 025000 . 028750 . 033250 .0375 .0437 .0605 .0625 .0750 .1025 Inch. 0. . 000075 . 000175 .000300 . 000200 .000225 . 000026 . 000025 . 000050 . 000050 . 000050 . 000050 . 000050 . 000050 .000100 . 000125 . 000160 .000100 .000175 . 000325 . 000450 .000950 . 001825 .002625 . 002876 . 002125 . 002650 . 002975 .003125 . 003126 . 003750 . 004600 . 004250 .0062 . 0068 ' .0120 .0125 .0275 Inch, 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. At lime of rupture. 0. 0. . 000050 . 000060 . 000260 . 000200 General summary. Tensile strengtli per square inoTi of original section ... pounds.. 78,000 Elastic limit per square inch of original section do... 38,000 JSlongation per inch after rupture ■. inch.. .1525 Elongation per inch. under strain at elastic limit do... .001300 lieduction in diameter at point of rupture do... .144 Keduction in area after rupture, per centum of original section 44 6 Position of rupture ■ „ ".35 from neck Character of hroli en surface resemldes that of B Ta Elongation of inch sections..... ".30*, ".10, ",09 ".12 12-INCH B. L. EIFLE, NO. 1. 113 No. 3891. Marks, ^ill Diameter, ."564 Sectional area, .25 square inch. Gauged length, i". Applied loada. Elongation per inch. Successive elongation per inch. Permanent set. Sacceesive permanent set. Bemarks. Total. Per sqiiare incli. JPounde. 260 1,250 2,500 5; 000 6,250 7,600 7,750 8,000 8,250 8,500 8,750 9,000 9,250 9,600 9,750 10, 000 10, 260 10, 500 10,760 11, 000 11, 300 12, 000 12, 500 13, 000 13, 500 14, 000 14, 500 16, 000 16, 500 16, 000 16, 600 17, 000 17, 600 18, 000 18, 500 19, 000 19, 280 16, 100 Pounds. 1,000 6,000 10,000 20, 000 26, 000 30,000. 31,000 32, 000 33, 000 34,000 35, 000 36, 000 37, 000 38,000 39, 000 40, 000 41, 000 42, 000 43, 000 44,000 46, 000 48, 000 50, 000 62, 000 64, 000 66, 000 68, 000 60, 000 62, 000 64, 000 66, 000 68, 000 70, OOO 72, 000 74, 000 76, 000 77, 120 Inch. 0. .000125 . 000300 . 000625 .000800 . 000950 . 000975 .001025 . 001075 .001,100 .001126 .001160 .001175 .001250 . 001360 . 001425 . 003300 . 005250 . 006175 . 007325 .009650 .012000 . 014250 .016876 . 019375 . 022600 . 026000 .029375 . 033600 .038000 . 043000 .049026 .0560 .0700 .0850 .1075 .1660 Inch. 0. .000125 .000175 . 000325 .000175 . 000160 . 000025 .000060 . 000060 . 000025 . 000026 .000025 . 000025 . 000075 .000100 . 000075 . 001875 . 001950 .000925 . 001150 .002225 . 002460 .002260 . 002625 . 002600 . 003225 . 003400 .003375 . 004125 . 004500 . 005000 .006625 . 005375 .0160 . 0160 .0225 .0575 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. At' time of rupture. 0. 0. . 000050 .000050 ■ , General summary. Tensile strength per square inch of orieinal section ' ponnds.. 77, 120 Elastic limit per square inch of original section :. do.-. 37,000 Elongation per inch after rupture -. inch.. .2200 Elongation per inch under strain at elastic limit do... .001175 Kednction in diameter at point of rupture do... .154 Eeduction in area after rapture, per centum of original section. 47.2 Position of rupture 2 ".10 from neck Character of broken surface.granular, 40per cent.; silky, 60 per cent.; opened cracks in surface of stem Elongation of inch sections ".15 ".42* ".18 ".13 H. Ex. 165 8 lU 12-INCH B. L. EIPLE, NO. 1. No. 3892. Marks, ^^11 Diameter, ".564. Sectional area, .25 square incli. Gauged length, 4". Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. Successive permanent set. Kemarks. Total. Per square inch. Pounds. 250 1,250 2,500 5.000 6,250 7,600 7,750 8,000 8,250 8,500 8,750 9, goo ^ 9,250 9,500 9,750 10, 000 10, 500 11, 000 11, 600 12, 000 12, 600 13, 000 13, .600 14.000 14, 500 15, COO 13, mo 10, 000 16, 600 17, 000 17, 500 15, 500 Piunds. 1, 000 5,000 10, 000 20,000 25, 000 30, 000 31, 000 32, 000 33, 000 - 34, 000 35, 000 36,000 37, 000 38, 000 39, 000 40, 000 42, 000 44,000 46, 000 48, 000 60, 000 62, 000 54, 000 66, 000 58, 000 60, 000 62, 000 64, 000 60, 000 68, 000 70, 000 Inch. 0. .000100 .000276 . 000675 . 000750 . 000975 . 001000 . 001060 .001175 .001300 .001775 . 002826 .003400 . 004425 . 005500 . 006675 . 008950 .011500 .014260 .017126 .020750 . 024250 . 028375 . 033000 . 038600 .041675 .0500 .0600 .0750 .1000 .1750 Inch. 0. . 000100 .000175 . 000300 . 000176 .000225 .000025 . 000050 . 000125 . 000125 . 000475 .001050 .000575 . 001025 .001075 . 001175 . 002275 .002550 . 002760 . 002875 . 003625 . 003500 .004125 . 004625 . 005600 . 006076 . 005426 .0100 .0150 .0250 .0750 Inch. 0. 0. , Inch. 0. Elastic limit Elastic limit Tensile strength. At time of rupture. 0. : 0. General summary. Xeasile strength per square inch of origiual section \, pounds . . 70, OOO Elastic limit per square inch of original section do... 32,000 Elongation per inch after rupture .'...inch.. .2700 Elongation per inch under strain at elastic limit do... .001050 .Keduction in diameter at point of rupture do... .144 Kednotion in ai?ea after rupture, per centum of original fjcction 44. 6 Position of rupture - 1"A5 from neck Character of hroken surface silky ohlique; bright lines parallel to surface of fracture Elongation of inch section^ ".18, ".24, ".43*, ".23 12-INCH B. L. KIFLE, NO, 1. 115 No. 797. Marks, ^l^^ Length, 5". Diameter, ".798. Sectional area, .50 square inch. Gauged length, 3". Applied loads. Compres- siOD per inch. Suoceesive compres- sion per iucn. Permanent set. Successive permanent set. Kemarks. Total. Per square iucii. Pounds. 600 2,500 5,000 7,600 10,000 . 12, 500 16,000 17, 500 18, 500 19,500 19, 000 19, 500 20, 000 20, 500 21, 000 21,500 22, 000 22, 500 34, 780 Powndr. 1,000 5,000 10, 000 15, 000 , 20,000 25, 000 30,i)00 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 41, 000 42, 000 43, 000 44,000 45, 000 69, 560 Inch. 0. . 000100 . 000300 . 000433 . 000567 . 000733 . 000933 . 001133 . 001333 ' .001500 . 001733 . 002467 . 004667 . 005500 . 006267 .007067 . 008067 . 009200 Inch. 0. . 000100 . 000200 .000133 . 000134 . 000166 . 000200 .000200 . 000200 . 000167 . 000233 . 000734 .002200 . 000833 . 000767 . 000800 . 001000 .001133 Inch: 0. Inch. 0. Initial load. Elastic limit. TTltimate strength. 0. 0. .000033 . 000033 . 003267 . 003234 Failed by triple flexure. 116 12-lNCH B, L. EIPLE, NO. X. No. 798. Marks, ^l^ Length, 5". Diameter, ".798. Sectional area, .50 square inch. Gauged length, 3". Applied loads. Compres- sion per inch. Snccesaive coinpres- aion per incli. Permanent set. Suceasive permanent set. Kemiirks. Total. Per sqaare inch. Pounds. 500 2,500 6,000 7,500 10, 000 12, 500 16, 000 15, 500 16,000 16, 500 17, 000 17, 500 18, 000 18. 500 19, 000 19, 500 20, 000 20, 500 21, 000 21, 600 22, 000 22, 500 34, 270 Pounds. 1,000 5,000 10, 000 15, 000 20, 000 25, OOO 30, 000 31, 000 32, 000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 41, 000 42, 000 43, 000 44, 000 46, 000 68, 540 Inch. 0. .000133 . 000267 . 000433 . 0OU567 . 000733 . 000900 . 000933 . 000967 . 001000 .001067 .001167 . 001300 . 001533 . 002000 . 002900 . 006000 . 005567 . 006467 . 007467 . 008700 . 009833 Inch. 0. . 000133 . 000134 . 000166 . 000134 . 000166 .000167 . 000033 . 000037 . 000033 . 000067 . 000100 .000133 . 000233 . 000467 .000900 .002100 . 000667 . 000900 . 001000 . 001233 .001133 Inch, 0. Inch. 0. Initial load. Elastic limit. Oltimatestrenglh. 6. 0. . 000167 .000167 . 003600 . 003433 . 008233 . 004633 Failed by triple flexure. 12-INCH B. L. RIFLE, NO. 1. No. 795. 117 Marks, '^11 Length, 12".'" Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 10". Applied loads. Compres- sion per inch. Successive compres- sion per incli. Permanent set. Sncoessiye permanent set. Bemarks. Total. Per square inch. Pounds. 1,000 6,000 10, 000 15, 000 ■ 20,000 25, 000 28, 000 29, 000 30, 000 31,000 32, 000 33, 000 34,000 35,000 36, 000 37, 000 38, 000 39, 000 40, 000 41, 000 42, 000 43, 000 44,000 44, 200 Pounde. 1,000 5,000 . 10,000 - 15, 000 20, 000 25,001 28, 000 29,000 30, 000 31, OOO 32, 000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 41,000 42, 000 43, 000 44, 000 44,200 Inch. 0. .00011 . 00029 .000(5 .00061 .00080 .00090 . 00093 . 00098 .00101 .00107 J 00112 .00130 . 00135 .00151 .00170 . 00191 .00224 . 00271 . 00321 . 00450 .00.150 . 00725 Inch. 0. . 00011 . 00018 . 00016 .00016 .00019 . 00010 . 00003 .00005 .00003 . 00006 . 00005 . 00018 . 00005 . 00016 .00019 .00021 . 00033 . 00047 .00050 . 00129 .00100 .00175 Inch. 0. Inch. 0. Initial load. Elastic limit. Ultimate strength. 0. . 00003 . O00O3 .00022 .00019 . 00142 , .00120 Failed by triple flexure. 118 12-INCII B. L. RIFLE, NO. 1. No. 79G. Marts, i\ll Length, 12". Diameter, 1".129. Sectional area, 1.00 square inch. Gauged length, 10". .Applied loads. Compres- sion per inch. Snccessive compression per inch. Permanent set. \ Successive permanent ■ set. Eemarks. Total. Per square j!ich. Founds. 1,000 5,000 10, 000 15, 000 20. 000 25, 000 28, 000 29, 000 30, 009 31,000 .32, 000 33, 000 34,000 85, 000 36, 000 37, f 00 38, 000 39, 000 40, 000 46,470 Pounds. 1,000 5,000 10, 000 15, 000 20, 000 25, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33, OOu 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, (190 46, 470 Inch. 0. . 00011 . 00029 . 0C044 .00061 . 00080 . 00091 . 00093 . 00099 . 00102 . 00108 .00111 .00119 .00128 .00165 . 00201 .00240 .00300 . 00410 0. .00011 . 00018 .00015 .00017 . 00019 .00011 .00002 . 00006 . 00003 . 00006 . 00003 .00008 . 00009 . 00037 . 00036 . 00039 .00060 .00.10 Inch. 0. Inch. 0. Initial load. Elastic limit. Ultimate strength. 0. . 00002 .00002 . 66617 . 00015 . 00271 . 00264 Failed by triple flexure. Marks, 'il\ - Length, 5". Diameter, ".798. - Sectional area, .50 square inch. Gauged length, 3''. 119 No. 799. Applied loads. Compres- sion, Successive compres- sion. Permanent set. SucoesslTO permanent set. Eemarks. Total. Per sqnare Pounds. 500 2,500 5,000 7,600 . 10, 000 12, 500 15,000 15, 500 16, 000 16, 500 17, 000 17, 500 18,000 18, 500 19, 000 19, 500 20, 000 20, 600 21, 000 21, 500 22, 000 22, 600 23, 000 23, 600 24,000 24, 600 25, 000 32, 900 Pounds. 1,000 5,000 10, 000 15, 000 20, OOO 25, 000 30, OOO 31, 000 32, 000 33, 000 34, 000 35, 000 86, 000 37, 000 38, 000 ,39, 000 - 40,000 41, 000 42, 000 43, 000 44, 000 45, 000 46,000 47,000 48, 000 49, 000 50,000 66,800 Inch. 0. . 000133 . 000267 .000400 .000633 .000700 .000900 .000933 . 000967 .001033 .001067 . 001100 .001133 . 001133 .001100 .000967 .000833 .000633 .000633 . 000500 .000600' .000833 .001067 .001467 . 001667 .001833 . 001867 Inch. 0. .000133 .000134 . 000133 . 000133 . 000167 .000200 . 000033 . 000034 .000066 . 000034 .000033 . 000033 0. -.000033 -.000133 -. 000134 -. 000200 0. -.000133 0. .000333 . 000234 .000400 .000200 .000166 . 000034 Inch. 0. Inch. 0. Initial load. Elastic limit; deflects convex on micrometer side of specimen. Deflection proceeds rap- idly. Ultimate strength. 0. 0. . -. 000667 -.0006671 . .. -.000767 -.oooiobj •f . 000133 . 000900 Failed by triple flexure. 120 12- INCH B. L. RIFLE, NO. 1. No. 800, 12 ET ") B Ti2 O Length, "5. Diameter, ".798. SectioQiil area, .50 square incli. Gauged length, 3". Applied loads. Compres- sion per inch. Successive compres- sion per inch. Permanent set. Successive permauent set. Eemarks. Total. Per square inch. founds. 500 2,500 5,000 7,500 10,000 12, 600 15,000 15,500 16,000 16,600 17, 000 17,500 18,000 18,500 19,000 19, 500 20, 000 20, 500 21,000 21,500 22, 000 22,500 35, 480 Pounds. 1,000 5,000 10, 000 16,000 20, 000 25, 000 30, 000 31,000 32,000 33,000 34,000 35, 000 36, 000 37, 000 38, 000 39, 000 40,000 41,000 42, 000 43,000 44, 000 45, 000 70, 960 Inch. 0. .000100 .000233 . 000400 . 000533 .000733 .000933 . 000967 . 001000 .001033 . 001100 . 001200 . 001333 . 001500 . 001800 .002533 . 003367 . 004000 .001033 . 000200 .007333 .008000 Inch. 0. .oodioo .000133 . 000167 ■ . 000133 .000200 . 000200 .000034 . 000033 .000033 . 000067 . 000100 . 000133 . 000167 . 000300 . 000733 .000834 . 000633 . 000933 . 001267 . 001133 . 001267 Jncft. 0. Inch. 0. Initial load. Elastic limit. ■Ultimate strength. 0. .000033 . 000033 . 000133 .000100 . 001500 . 000167 . .006800 .005300 Failed by triple flexure. HE\....z6a^...3\ 2 12 -inch b, l. rifle, no. 1. Muzzle end. 121 No, 3893. Diameter, ".564. Sectional area, .25 square inch. Gauged length, 4". Applied loads. Elongation per inch. Successive elongation yer inch. Permanent set. Successive permanent set. Remarks. Total. Per square inch. Pounds. 250 1,2S0 2,500 5,000 6,260 7,500 8, 750 9,000 9,250 9,500 ^ 9,750 10, 000 10, 260 10, 500 10, 760 11, 000 11,260 11,600 11, 750 12, 000 12,250 12, 500 13, 000 13, 500 14, 000 '14, 600 16, 000 15, 500 16, 000 16, 600 17, 000 17, 500 18, 000 18, 500 19, 000 19, 600 20, 000 20, 500 ■21,000 21,500 22, 000 22, 500 20,800 Pounds. 1,000 5,000 10, 000 20, 000 25, 000 30, 000 35, 000 36,000 37, 600 38, OOO 39, 000 40,000 41,000 42, 000 43, 000 44, 000 45, 000 46, OOO 47, OOO 48, 000 49, OOO 50,000 52, 000 54, 000 66, 000 68, 000 60, 000 62, 000 64, 000 66, 000 68, 000 70, 000 72,0 74, 000 76, 000 78, 000 80, 000 82, 000 84, 000 86, 000 88, 000 90, 000 Inch. 0. . 000100 . 000275 .000600 . 000775 . 000975 . 001175 . 001200 . 001250 . 001275 . 001300 . 001360 . 001400 . 001425 . 001475 . C01500 .001525 . 002560 . 003500 . 005200 .006250 .006750 . 008260 . 010125 . 012875 .013750 . 016625 .017500 . 019750 . 022375 .024875 . 027425 .031000 .034000 . 038125 .0425 .0475 .0525 . 0650 .0750 .0900 .1325 Inch. 0. . 000100 .000175 . 000325 . 000175 . 000200 . 000200 . 000025 .000025 .000051$ . 000025 .000050 . 000050 . 000025 . 000060 . 000025 . 000025 .001025 .000950 . 001700 .001050 . 000500 .001600 .001875 .001750 .001875 . 001875 . 001875 . 002250 . 002625 . 002600 .002650 . 003575 . 003000 . 004125 .004375 .0050 :0050 .0125 .0100 .0150 .0425 Inch. 0. 0. Inch. 0. Initial load. Elastic limit Tensile strength. At time of rupture. 0. 0. 0. o; 0. " General summary. Tensile Btrength per Bqnareincli of orieinal section pounds. . 90,000 Elastic limit per square inch of original section do... 45,000 Elongation per inch after rupture inch.. .1700 Elongation per inch nnder etrain'at elastic limit do... .001525 Kednctionin diameter at point of rupture - > ....do... .114 Bednction in area after rupture, per centum of original section 36. 4 Position of rupture 1". 60 from neck Character of iSroken surface silky, oblique Elongation of inch aectiona ".11, ".13, ".31*, ".13 122 12-INCH B. L. EIFLE, NO. 1. No. 3894. Diameter, ".564. Sectional area, .25 square inch. Gauged length, 4". Applied loads. Eloi/gation per inch. Successive elongation per inch. [Permanent set. Snccessire permanent sot. Eemarks. Total. Per square incii. Pounds. 250 1,250 2,500 5,000 7,600 8,750 10, 000 10, 250 10, 500 10, 750 11, 000 11, 250 11, 500 11,760 12, 000 12, 260 12, 500 33, 000 13, 500 14,000 14,500 15, 000 15, 500 16, 000 16, 500 17, 000 17, 500 18, 000 18, 600 19, 000 19, 500 20, 000 20, 500 21, 000 21, 500 22, 000 22, 180 18, 900 Pounds. 1,000 5,000 10, 000 20, 000 ' 30, 000 35, 000 40, 000 41, 000 42, 000 43, 000 44,000 45, 000 46, 000 47, 000 48, 000 49, 000 50, 000 62, 000 64, 000 56, 000 58, 000 60, 000 62, 000 64, 000 66, OOO 68, 000 70, 000 72, 000 74, 000 76, 000 78, 000 80, 000 82, 000 84, 000 86, 000 88,000 88, 720 Inch. 0. . 000100 .000276 . 000575 . 000950 .001100 . 001250 . 001275 . 001323 .001350 .001425 .001475 . 002258 . 002450 . 003700 . 004950 . 006000 . 007500 . 009125 .011000 .013125 .015000 . 017000 . 019375 . 022250 . 024025 . 028000 . 031000 . 034375 .038375 . 043000 .0475 .0525 .0025 .0775 .0975 .1350 Inch. 0. .000100 .000173 . 000300 .000375 . 000150 . 000150 . 000025 . 000050 .000025 ■ . 000075 . 000050 . 000775 . 000200 .001260 . 001250 .001050 . 001500 .001625 .001875 . 002125 .001875 . 002000 . 002375 . 002875 . 002375 . 003375 .003000 . 003375 . 004000 . 004625 .0045 .0050 ,0100 .0150 .0200 .0375 Inch. 0. 0. ,^lnoh. Initial load. Elastic limit. Tensile strength. At time of rupture. 0. 0. 0. 0. 0. General summary. Tensile Rtrengfh per square inch of original section ponnds.. 88,720 Elastic limit per aquare inch of original section do.-. 45, 000 Elonjration per inch after rupture inch,. .1750 Elongation per inch under strain at elastic limit do... .001475 Keduction In diameter at point of rupture do... .154 Eod action in area after rupture, per centum of original section 47.2 12-INCH B, L, RIFLE, NO. 1. Fo. 3895. 123 Marks, ^i^et Diameter, ".564. Sectioual area, .25 square inch. Gauged length, 4". Applied loads. Elongation per inch. Snccessivo elongation per inch. Permanent set. Successive permanent set. Eemarlta. Total. Pounds. 250 1,250 2,500 5,000 7,500 8,750 10, 000 10,250 10, 500 10, 760 11, 000 11,250 11, 500 11, 750 12,000 12,260 12, 500 13, COO 13, 600 14, 000 14, 600 15, 000 15, 500 16, 000 16, 500 17, 000 17, 500 18,000 18, 500 19, 000 19, 500 20, 000 20, 500 21, 000 21, 500 22, 000 22, 100 20, 500 Per square ^ incn. Pounds. 1,000 _ 6,000 10, 000 20, 000 30,000 •35,000 40, 000 41, 000 42, 000 43, 000 44, 000 45, 000 46, 000 47, 000 48, 000 49, 000 50, 000 52,000 54,000 56, 000 68,000 60, 000 62,000 64,000 66,000 68; 000 70,000 72, COO 74, 000 76,000 78, 000 80, 000 82,000 84, eoo - 86, 000 88, 000 88, 400 Inch. 0. .000100 .000275 .000^75 .000960 .001100 . 001300 . 001325 . 001350 . 001400 . 001450 .001476 < .0015:5 \ .002260 . 003500 .005450 .000150 .006975 .008500 .010000 . 011875 .014400 .015950 . 018000 .020626 .023000 .025950 . 028775 .032000 . 036000 . 040000 . 043760 .0500 .0575 .0675 .0800 .1050 ,1275 Inch. Inch. 0. ■ Inch. 0. Initial load. Elastic limit. Tensile strengtli.. At time of fracture.- .001250 . 001950 . 000700 .000825 . 001525 .001500 . 001875 . 002525 .001550 . 002050 .002025 . 002375 .002950 . 002825 .003225 . 004000 .004000 . 003760 . 006250 .0075 .0100 , 0125 .0250 .0225 General summary. Tensile atrength per square inch of original section - ^ pounds.. 88,400 Elastic limit per square inch of original section do... 46,000 Elongation per incn. after rupture inch.. 0. 1725 , -Elongation per inch under strain at elastic limit do... .001525 . Beduction in diameter at point of rupture do... .12i Keductlou in area after rupture, per ceufcum of original secLion 39.2 Position of rupture ".110 from' neck Character of broken surface silky ; oblique Elongation of inch sections .'.".09, ",11, ".22, ".27* 124 12-lNCH B. L, EIFLE, NO. 1. ¥o. 3896. Marks, S?^^i Diameter, ".564. Sectional area, .25 square inch. Gauged length, 4"- Applied loads. Elongation per incli. Successive elongation per inch. Permanent set. Successive permanent set. Kemarks. / "Total. Per sqaare inch. Pounde. 260 1,260 2,500 6,000 7,500 B, 7S0 10. 000 10, 260 10, 300 10, 750 11,000 11,250 11, 500 11, 750 12, 000 12, 260 12, 500 12, 760 13, 000 13, 250 13, 50O 14, 000 14, 500 15, 000 15, 500 16,000 16, 500 17, 000 17, 500 18,000 18, 500 19, 000 19, 500 20,000 20, 600 21, 000 21, 500 22, 000 22, 600 23, 000 Founds. 1.000 5,000 10, 000 20, 000 30, 000 35, 000 40, 000 41, 000 42, 000 43, 000 44, 000 46, 000 46, 000 47, 000 48, 000 49, 000 50, 000 51, 000 52,000 " 63, 000 64, 000 66, 000 58, 000 60, 000 62, 000 64, 000 66, 000 68, 000 70, 000 72, 000 74, 000 76, 000 78, 000 80, 000 82, 000 84, 000 86, 000 88, 000 90, 000 92, 000 Inch. 0. . 000076 .000275 .000575 . 000925 . 001076 . 001275 . 001300 .001325 .000375 . 001400 . 001450 .001500 . 001576 . 001600 . 006260 . 006623 . 006225 . 006976 .007500 .008450 . 010250 . 012000 . 013926 . 015625 . 017925 . 020000 .022500 . 025000 .027500 . 030500 .038950 .037625 . 041500 .0475 .0600 .0576 .0700 .0875 .1250 Inch. 0. . 000076 . 000200 . 000300 . 000350 . 000150 . 000200 . 000025 . 000025 . 000060 . 000026 . 000050 .000050 .000075 . 000025 . 003650 . 000376 . 000600 .000750 . 000525 .000950 . 001800 . 001750 .001925 .001700 . 002300 .002075 . 002500 . 002500 . 002500 . 003000 .003460 . 003675 . 003875 .0060 .0026 .6075. .0125 . 0175 .0376 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. 0. 0. 0. 0. General summary. Tensile strength per square inch of original section ponnda,. 92 000 Elaaticlimit per square inch of original section do.l' 48*000 Elongation per inch after rupture , ['_\\ inch * 1525 - Elongatiou per inch under strain at elastic limit ^.. !!!..".*..'"'" J. '."!"" do "' 001600 Eeduttion in diameter at pointof rupture "_"_"_'_". f\n"' ' nttt 12-INCH B. L. RIFLE, NO, 1. 125 No. 3897. Marks, i^RT Diameter, ".564. Sectional area, .25 square inch. Gauged length, 4". Applied loads. 1 Elongation per 'inch. Successive elonf;ation per inch. Permanent set. Successive permanent But. Eemarke. Total. Per square inch. Pounds. 250 1,250 2,500 5,000 7,500 8,750 10, OOO 10, 260 10, 600 10, 750 11, 000 11,250 11, 600 11,750 12, 000 12, 250 ' 13,500 ^ 13, 000 13, 600 14, 000 14, 500 15, OUO 16, 500 16, 000 16, 500 17, 000 17, 500 18, 000 18, 600 19,000 19, 500 20, 000 20, 500 21,000 21,600 22, 000 22, 500 21, 500 Pounds. 1,000 6,000 10, 000 20, 000 30, 000 35, 000 40, 000 41,000 42, 000 43, 000 44,000 45,000 46, 000 47, 000 48, 000 49, 000 60, 000 62, OOO 54, 000 56, 000 68, 000 60. 000 62, 000 64, 000 66, 000 68, 000 70,000 72, 000 74, 000 76, 000 78, OOO Inch. 0. . 000190 .000300 . 000625 . 000975 .001125 . 001350 . 001375 .001400 . 001435 .001475 . 001500 .001550 .002126 .003750 . 004875 .005950 . 007500 . 009360 . 011000 . 012925 .014876 .016950 . 019250 .031626 . 034500 .027036 . 030375 . 033650 .0375 .0495 ' Inch. 0. . 000100 . 000300 .000326 . 000350 .000150 . 000325 . 008025 .000025 . 000025 . 000050 . 000026 . 000050 .000650 .001626 . 001125 . 001075 .001550 . 001750 .001760 .001936 . .001960 .002075 . 002300 . 002375 . 002878 .002525 .003350 . 003275 .003850 .0050 .0050 .0050 .0075 .0125 .0175 .0400 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strengtb. At time of fracture. 0. 0. 0. . 000050 . 000050 80,000 1 .0475 82,000 1 .0525 84,000 .-.0600 86,000 , .0725 88,000 1 .0900 90,000 1 .1300 1 1 General summary, Tenaile strength per sqnareinch of original section .pounds.. flO, 000 Elfistic limit per square inch, of original section do... 46,000 Elongation per inch after rapture inch.. .1725 Elonsation per inch under strain at elastic limit do... .001550 Keducbion iu diameter at point of rupture do... .094 Keduction in area after rupture, per centum of original section ^ 30. 6 Position of rupture ^ 1".60 from neck Character of broken surface silky oblique Elongation of inch sections , ".18, ".28*, ".13, "1 126 12-INCH B. L. RIFLE, NO. 1. Kq. 3898 Marks, ^2RT . MTjM Diameter, ".564. Sectional area, .25 square inch. Gauged length, 4". Applied loads. Elongation per iucii. Snooessive elongation per inch. Permanent set. Successive permanent set. Kemarks. Total. Per square inch. Pounds. ' 250 1, 260 2,500 5,000 7,600 8,760 10, 000 10, 250 10, 500 10, 760 11,000 11,250 11, 600 11, 750 12, 000 12,'260 12, 600 13, 000 13, 500 14, 000 14, 600 16, 000 15, 600 16, 000 16, 500 17, 000 17, 500 18, 000 18, 500 19, 000 19, (iOO 20,000 20, 500 21, 000 21,600 22, 000 22, 500 22, 980 22, 100 Pounds. 1,000 5,000 10, 000 20, 000 30, 000 35, 000 40, 000 41, 000 43, 000 43, 000 44,000 46, 000 46, 000 47, 000 48, 000 49, 000 60, 000 52, 000 54,000 66, 000 68, 000 60,000 62, 000 61, 000 66, 000 68,000 70, 000 72, 000 74,000 76, 000 78, 000 80, 000 82, 000 84, 000 86, 000 88, 000 90, 000 91, 920 Xneh. 0. . 000126 . 000325 . 000650 . 001000 . 001176 . 001425 . 001450 .001475 .001500 . 001525 . 001560 . 001600 . 001660 . 002860 . 003260 . 004375 . 006225 . 007625 . 009500 . 010350 .012675 . 014126 . 016300 . 018400 .020760 . 023550 . 026000 . 028375 . 032000 .0350 .0400 .0425 .0475 .0626 .0626 .0760 .1000 Inch. 0. . 000125 . 000200 . 000325 .000360 .000175 . 000250 . 000025 .000025 . 000025 .000025 . 000025 . 000050 . 000050 . 000200 . 000400 .001125 .0018.50 . 001400 . 001875 .000850 . 002325 . 001460 . 002175 . 002100 .002350 . 002800 . 002460 . 002375 .003625 .0030 .0060 .0025 .'0060 . 0050 .0100 .0125 .0260 Inch,. 0. 0. Inch. • , Initial load. Elastic limit. Tensile strength. At time of rupture. 0. . 000025 .000050 . 000050 . 000025 .000025 0. . 007300 . 0O72S0 .010J50 .002960 General summary. Tensile strengtli per square iiich of original section pounds . . 91 , 920 Elastic limit per square inch of original section .-. do ... 47, 000 Elongation per inch after rupture inch. . . .1125 Elongation per inch under strain at elastic limit do... . 001650 deduction in diameter at noint of runture... __ An " naA 12-INCH B. L. KIFLE, NO. 1. 127 No. 801. Marks, g^^ Length, 5". Diameter, ".798. Sectional area^ .50 square inch. Gauged length, 3". Applied loads. Total. Per aqaare in on. Compres- sion per inch. Saccessive oomppes- sion per inch. Permanent Successive permanent set. Bfmarks. Pounds. SOU 2,500 5,000 7,500 10, 000 12, 500 15, 000 17, 600 20, OCO 20, 500 21, 000 21,500 22, 000 22, 500 23, 000 23, 500 24, 000 24,500 25, 000 26, 500 26, 000 20, 500 27, 000 27, .',00 ^28, 000 41, 300 Pound). 1,000 ■5, 000 10, 000 16, 000 20, 000 25, 000 30, 000 35, 000 40, OOO 41, 000 42, 000 43,000 44, 000 45, 000 46, 000 47, 0.00 48, 000 49, 000 50, 000 61, 000 52, 000 63, 000 54, 000 55, 000 56, 000 82, 600 Inch. 0. . OOOIOO . 000233 . 000400 . 000533 . 000700 . 000033 .001100 . 001367 .001333 . 001367 . 001267 .001433 .001467 . 001500 .001633 . 002800 .004500 . 004667 . 005033 . 005667 .006267 . 006733 ■ . 007400 . 007833 iTioh. 0. . 000100 .000133 . 000167 .000133 .000167 . 000233 .000167 .090167 . 000066 . 000034 0. . 000068 . 000034 . 000033 . 001287 . 001700 .000167 . 000386 . 000634 . 000800 . 000486 . 000687 . 000433 Inch. Inchr Initial load. , 000087 Elastic limit. Ultimate strength.' Failed by triple flexure. 128 12-INCn B. L, KIFLE, NO. 1. IS^O. 802. Marks, ^11 Length, 5". Diameter, ".798. Sectional area, .50 square inch. Gauged length, 3". Applied loads. Gompres- ■ Bion per inch. Successive cooipres- sion per inch. Permanent set. Successive permanent set. Kemarks. Total. Per square inch. Founds. 600 2,600 ~5, 000 7, 500 10, 000 12,600 15,000 17, 600 20, 000 20,500- 21, OOO 21,500 22, 000 22,500 23, 000 23,500 24, 000 24, 50O 25,000 25,500 26, 000 26, 600 27, 000 42,410 Founds. 1,000 6,000 10, 000 15, 000 20, 000 26, 000 30, 000 36, 000 40, 000 41,000 42, 000 43, 000 44, 000 46, OOO 46, 000 47, 000 48, 000 49, 000 50, 000 51, 000 52, 000 53, OOO 54,000 84, 820 Inch. 0. .000133 . 000267 ..000400 . 000567 . 000733 . 000900 . 001067 .001233 . 001267 .001333 . 001367 .001400 .001467 .001533 .001600 . 001667 .001767 . 001967 .004300 .005533 . .006600 .007333 Inch. 0. . 000133 .000134 .000133 . 000167 . 000166 .000167 .000167 . 000166 . 000034 . 000066 . 000034 . 000033 . 000067 . 000066 . 000067 . 000067 . 000100 . 000200 . 002333 .001233 . 001067 . 000733 Inch. 0. Inch. 0. Initial load. Elastic limit. .Ultimate strength. 0. 0. 0. , Failed by triple flexure. 12-INCH B. L. RIFLE, NO. 1. 129 Ko. 803. Marks, ™ Length, 3".80. Diameter, ".798. Sectional area, .50 square inch. Gauged length, 3". Applied loads^ Compres- Saooessive Permanent set. Successive permanent set. Eemarks. Total. Per square inoli. sion per incu. sionper men. Pounds. 500 2,500 . 5,000 , 7,500 10, 000 12, 500 15,000 17,600 20,000 20, 600 21,000 21,500 22, 000 22, 500 23,000 23, 500 24, 000 24, 500 26, 000 ,45,580 Pounds.. 1,000 5,000 10,000 15, 000 20,000 25, 000 30,000 35, 000 40, 000 41, 000 42, 000 43, 000 44^000 45, 000 46, 000 . 47,000 ' 48, 000 49, 000 50,000 91, 160 Inch. 0. .000100 . 000233 . 000376 . 000500 . 000667 .000933 .001067 .001233 .001233 .001267 .001300 .001333 .002867 .003400 ' .004033 . 004633 .005300 .005900 Inch. 0. . OOOIOO . 000133 . 000134 .000133 .000176 . 000266 . 000134 .000166 6. . 000034 . 0C0033 . 001033 .000534 . 000533 .000633 . 000600 . 000667 .000600 Inch. 0. Inch. 0. Initial load. Elastic limit. Ultimate strength. 0. 0. 0. - Failed by double flexure. H. Ex. 165 9 130 12-INCH B. L. KIPLE, NO. 1. SPECIMENS FEOM JACKET. .Eear End. No. 3903. Marks, '^li,^^ Diameter, ".564. Sectional area, .25 square inch. Gauged length, 4". Applies loada. Elongation per inch. Saccesaive elongation per inoh. Permanent set. Sacceasive permanent set. Eemarks. Total. Per square inch. Pounds. 250 1,250 2„50"0 5,000 7,500 8,750 9,500 9,750 30,000 10,250 , 10, 500 s 10, 750 11, 000 11, 250 11, 600 ■ 12,000 12, 500 13, 000 13, 600 14, 000 14, 500 15, 000 15, 500 16, 000 16, 60O 17, 000 17, 500 18, 000 18, 500 19, 000 19, 600 20, 000 20, 500 21, OOO 21, 290 Pounds. 1, 000 5,000 10,000 20, 000 30, 000 35, 000 38, 000 39, 000 40, 000 41, 000 42, 000 43, 000 44, 000 45, 000 46, 000 48,000 50, 000 52, 000 54, 000 58, 000 68, 000 60, 000 62, 000 64, 000 66, 000 68, 000 70, 000 72, 000 74, 000 76,000 78, 000 80, 000 82, 000 84,000 85, 160 Inch. 0. .000100 . 000275 .000550 . 000925 .001050 .001125 .001175 .002250 . 002475 . 002675 , .003000 .003425 . 004000 . 004900 . 006425 .008276 . .010300 . 012250 .014450 . 016625 .018926 .021500 . 024125 . 027500 .030500 . 0340o0 . 038500 . 043000 .0500 .0537 .0650 .0760 .0975 .1450 Inch, 0. .000100 . 000175 . 000275 . 000376 .000125 . 000075 . 000050 . 001075 .000225 . 000200 . 000325 . 000i25 . 000575 .000900 .001525 .S)01850 . 002025 .001950 .002200 . 002175 . 002300 . 002676 . 902626 . 003375 . 003000 .003500 . 004500 . 004S00 .0070 . .0037 .0113 .0100 .0225 .0476 Inch. 0. 0. Inch. 0. Initial load. Elastic Umit. Tensile strength. 0. . 000825 . 000825 . 001250 . 000425 General summary. Tensile strength per square inch of original section pounds.. 85, IGO Elastic timit per square inch of original section ...do... 39,000 Elongation per inch after rupture inch.. .1800 Elongation per inch under straiu at elastic limit do,.. .001175 Beduction indiameterat point of rupture : do... .084 Kednction in area after rupture, per centum of original section 27. 6 Position of rupture 1". 19 from neck Character of broken surface silky, 40 per cent.; granular, 60 per cent.; opened cracks in surface of stem in vi< inity of fracture. Elongation of inch sections , 'M9*, ".24% ".15, ".14 ^^3.6 HEx.. ./^.5:_._.51 2 12-INCH B. L. EIFLE, NO. 1. 131 No. 3904. Marks, ^^^ g Diameter, ".564. Sectional area, .25 square inch. Gauged length, 4". Applied loads. Total. Per sqaare iucn. Elongation iper incli. Successive elonjratiou per iucb. Permanent aet. Successive permanent set. Hemarlis. Pounds. 250 1,250 2, 500 6,000 7,500 8,750 10, 000 10, 500 10, 750 11, 000 11, 250 11, 500 11,750 12, 000 12, 250 12, 500 , 12, 750 13, 000 13,250 13, 500 13, 750 U, 000 14, 500 15, 000 15,600 16, 000 16, 600 17, 000 17, 600 18, 000 18, 600 19, 000 19, 500 20, 000 20, 500 21, 000 21, 500 22, 000 22, 600 23, 000 23, 500 24,000 24,600 24, 710 Pounda. l.dOO 5,000 10, 000 20, 000 30, 000 35,000 40, 000 , 42, 000 43, 000 44, 000 45, 000 46, 000 47, 000 48, 000 49, 000 50, 000 61, 000 52, 000 53, 000 54, 000 55| 000 56, OOO 68, 000 60, 000 62, 000 64, 000 66, 000 68, 000 70, 000 72, 000 74, 000 76, 000 78, 000 80, 000 82, 000 84, 000 86, 000 88, 000 90, 000 92, 000 94, 000 96, 000 98, 000 98, 810 Inch. 0. . 000175 . 000350 . 000650 .001000 . 001175 . 001376 . 001400 . 001425 . 00)475 . 001550 . 001600 . 001625 . 001675 . 001700 ' . 001800 . 001875 . 002125 . 003626 . 004625 . 005500 . 906250 . 007800 .009250 . 011000 . 012750 . 014500 .016275 .018260 . 020250 .022500 . 025000 . 027000 . 029750 . 033000 . 036000 .040000 .0450 .0500 .0550 .0650 .0750 .0950 .1275 IncJi. 0. . 000176 . 000175 . 000300 . 000360 . 000175 . 000200 . 000025 . 000025 . 000050 . 000075 . 000050 . 000026 . 00005U . 000025 .000100 . O0O075 . 000250 . 001500 . 001000 . 000875 . 000760 . 001660 .001450 . 001750 . 001760 . 001750 . 001775 .001975 . 002000 . 003250 .002500 . 002000 . 002750 . 003250 . 003000 . 004000 .0050 .0060 .0050 .0100 .0100 .0200 .0325 iT^eh. 0. 0. Inch. 0. Initial load. . 000050 Elastic limit. Tensile strength. Gene)-al summary. Tensile strength per square inch of original section pounds.. 98,840 Elastic limit per square inch of original section .do... *9, 000 Elongation per inch after rupture inch.. -JOOO Elongation per inch under strain at elastic limit a" ]S,a Keduotion in diameter at point of rupture do... .084 Eednction in area after rupture, per centum of original section - • ^7. 6 Position of rupture - -. l".eo from neck Character of broken surface granular ; dull silky band extending from circumference to center Elongation of inch sections ".11, ".14, ^'.28*, ".11 132 12-INCH B. L. EIFLE, NO. 1. No. 3905.- Marks, ^2K J Diameter, ".564. Sectional area, .25 square inch. Gauged length, 4". Applied loads. ElOD^ation per inch. Successive elnnjratiou per inch. Perronnent sot. Snccessiye perraanont set. Kemarks. Total. Per square incli. Pounds. 250 1,250 2,500 5,000 7,600 8.750 9,000 9,250 9,600 9,750 10. 000 10, 250 10, 600 10, 760 11,000 11, 500 12,000 12, 500 13, 000 13, 600 14, 000 14, 600 15, 000 16, 500 16, 000 16, 600 17,000 17, 500 18, 000 18, 600 19, 000 19, 500 20, OOO 20, 500 20,640 Pounds. 1,000 6,000 10, 000 20, 000 30, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 4i; 000 42, 000 43, 000 44, 000 46, 000 48, 000 50, OCO 52, 000 54, Odfl 56, 000 68,000. 60, 000 62, 000 64, 000 66, 000 68, 000 70, 000 72, 000 74, 000 76, 000 78,000 80, 000 82, 000 82, 560 Inch. 0. .000100 . 000300 . oooeoo . 001000 .001225 .001325 .001400 .001660 .001775 . 002325 .002825 . 003775 .004250 . 005126 .006760 . 008625 . 010500 . 012500 .014750 .016876 . 019500 . 022250 . 025000 .028125 .031750 . 036500 . 040000 .0460 .0600 .0576 .0700 .0800 .OO.W .1500 Inch. 0. . OOOIOO .000200 . 000300 .000400 . 000226 .000100 . 000076 .000160 . 000226 ■ . 000560 . 000500 . 000060 . 000475 . 000875 .001625 . 001876 .001875 . 002000 . 002250 . 002126 . 002625 . 002750 . 002750 .003125 . 003625 . 003750 . 004500 . 0050 .0050 .0075 .0125 .0100 .0160 .0560 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. t. . 000060 . 000050 . 002300 . 002250 • General summary. Tensile stroDgth per aqaare inch of original Beclion pounds.- 82,560 Elastic limit per square inch of original section do... 35,000 Elongation per inch after rupture .^ inch.. .1650 Elongation per inch under strain at elastic limit do^.. .001225 Bednctionin diameter at point of rupture do... .084 Keduction in area after rupture, per centum of original section - 27.6 Position of rapture 2". 15 from neck Character of broken surface granular, 50 per cent. ; dull silky, 50 per cent Elougationof inch sections ".12, ".26*, ".16. ".12 12-INCH B. L, RIFLE, NO. 1. No, 804. 133 Marks, b t^i Length, 5". Diameter, ".798. Sectional area, .50 square inch. Gauged length, 3". Applied loads. Compres- sion per inch. Snocessive cqmpres- slon per inch. Permanent set. Successive permanent set. Kemarks. , Total. Per square inch. Pounds, 500 2, 500 5,000 7, 500 10,000 12, 500 15,000 ,' 17,600 19,000 19, 500 20, 000 20, 500 21,000 21, 500 22,000 22, 500 23,000 23, SOO 24, 000 24.600 25, 000 39,910 Pounds. 1,000 5,000 10, 000 - 15, 000 20, 000 ' 25, 000 30, 000 36, 000 38, 000 39, 000 40, 000 41, 000 42, 000 43, 000 44,000 45,.000 46, 000 47, 000 48,U)0 49, 000 50, 000 79,820 Ineli. 0. . 000167 .000300 .000500 . 000033 .000800 . 000933 . 001100 . 001200 .001233 . 001300 . 001333 .001367 .001400 . 001433 .001600 .001833 .002967 . 005167 .006000 . 006733 Inch. 0. .000167 . 000133 . 000200 .000133 .000167 . 000)33 - .000167 .000100 . 000033 . 000067 . 000033 . 000034 . 000033 . 000033 . 000167 . 000233 .001134 . 002200 . 000833 .000733 Inch. 0. Inch. - 0. Initial load. Elastic limit. Ultimate strength. 0. 0. Failed by triple iiexure. 134 12-INCH B. L. RIFLE, NO. 1. JSTo. 805. Marks, «« J Length, 5". Diameter, ".798. Sectional area, .50 square inch. G-auggd -length, 3". Applied loads. Compres- Bion per indli. Successive eompres- sion per iuch. Permanent set. Successive permanent set. Kemarks. Total. Per sqnare inch. Pounds. 500 / 2, 500 ' 6,000 7,600 10,000 12, 500 15, 000 17,600 19, 000 19, 500 20, 000 20, 600 21,000 21, 500 22, 000 22, 600 23, 000 23,500 24, 000 24,600 26, 000 2,';, 600 26, 000 26, 600 27, 000 27, 500 28, 000 28, 500 29, 000 46, 100 Pounds. 1,000 5,000 10, 000 15, 000 20, 000 25, 000 30, 000 35, 000 38, 000 39, 000 40, 000 41, 000 42, 000 43, 000 44,000 45, 000 46, 000 47, 000 48, 000 49, 000 50, 000 61, 000 52, 000 63, 000 54,000 55, 000 56, 000 57, 000 58, 000 92, 200 Inch. 0. . 000133 . 000300 . 000467 . 000633 . 000767 . 000933 . 001100 . 001200 . 001233 . 001300 .001333 .001307 .001400 . 001433 . 001500 . 001567 .001667 .001767 .001933 .002200 . 002433 . 002767 .003100 . 003333 .004067 ' .004567 . 005133 . 005900 Inch. 0. . 000133 . 000167 . 000167 .000166 .000134 .000166 . 0001G7 , .000100 .000033 .000067 . 000033 . 000034 . 000033 . 000033 . 00Q067 .000067 .000100 .000100 .0001(16 . 000267 . 000233 . 000334 . 000333 . 000233 .000734 . 000500 . 000566 . 000767 Inch. 0. Inch. • 0. Initial load. Elastic limit. Ultimate strengtli. 0. 0. Failed by triple flexure. 12-lNCH B. L. RIFLE, NO, 1. 135 No. 806. Marks, %lf Length, 5", Diameter, ".798. Sectional area, .50 square inch. Gauged length, 3". Applied loads. Compres- sion per inch. Successive compres- siou per Innh. Permanent sot. Sacccsaive permanent set. Remarks. Total. Per square inch. Fovndi. 500 2,500 5,000 7,500 10, 000 12, 500 15, 000 17, 500 19, 000 19, 500 2U, 000 20,600 21, 000 21,500 22, 000 22, 50O 23,000 23, 500 24,000 24, SOO 25, 000 39, 180 Pounds. 1,000 5,000 10, OUO 15, 000 20, 000 25, 000 30, 000 35, 000 38, 000 39, 000 40, 000 41,000 42, 000 43,000 44, 000 45, 000 46, 000 47, 000 48, 000 49, 000 50,000. 78, 360 Inch. 0. .000100 . 000233 .000400 . 000533 . 000700 . 000867 .001033 .001100 .001133 .001133 . 001.300 . 001833 . 002333 , . 1102867 . 003667 . 004?67 . 006133 .006233 .006833 .007667 Inch. 0. .000100 . 000133 .000167 . 000133 . 000167 . 000167 .000106 . 000067 . 000033 0. .000167 . 000533 .000500 . 000534 . 000800 . 000600 .000866 .001100 .000600 : 000834 Inch. 0. Inch. 0. Initial load. Elastic limit. Ultimate strength. 0. — . 000167 — . 000167 Failed by triple flexure. 136 12 -INCH B. h. EIPLE, NO. 1. No. 807. Marks, ^^^ Length, 5". Diameter, ".798. Sectional area, .50 .square incli. Gauged length, 3". Applied loads. Compres- Bion per incli. Sncessive compres- sion per IncIi. Permanent set. Successive permanent set. Eemarka. Total. Per sqaare inch. Pounds. 500 2,500 6,000 7,500 10,000 12, 600 15, 000 17, 500 19, 000 19, 500 20,000 20, 500 21, 000 21, 600 22, 000 22, 500 23,000 23, 500 24, 000 84, 500 25, 000 39, 470 Pounds. 1,000 5,000 10, 000 15, 000 20, 000 25, 000 30, 000 35, 000 38, 000 39, 000 40, 000 41, 000 42,000 43, 000 44, 000 45, 000 46, 000 47, 000 48, 000 49,000 50, 000 78, 940 Inch. 0. . 000100 . 000233 .000400 . 000633 . 000700 . 000900 . 001033 . 001133 . 001167 .001167 .001533 . 001867 .002300 . 002967 . 003500 .004067 . 004900 .005433 .006267 . 007267 Inch. 0. . 000100 . 000133 .000167 . 000133 . 000107 . 000200 .000133 . 000100 . 000034 0. .000366 . 000334 .000433 .000667 . 000533 . 000567 . 000833 . 000533 .000834 . 001000 Inch. 0. Inch. 0. Initial load. Elastic limit. Ultimate strength. 0. 0. Failed by triple flexure. HEx,,./^i$:....._.51 2 12-inch b. l. rifle, no. 1. Feont End. 137 No. 3906. Marks, ^?/i Diameter, ".564. Sectional area, .25 square inch. Gauged length, 4". Applied loa Is. Total. Per sqnare incli. Elongation per iuch. Successive elongation per inch. Permanent set. SuccessiTe permanent set. Kemarlis. Pounds. 250 1, 250 2,500 5,000 7,500 8,750 10, 000 10, 500 10, 750 11, 000 11, 250 11,600 11,750 12, 000 12, 250 12, 500 12, 750 13, 000 13, 250 13, 500 14, OOO 14, 500 15, 000 15, 500 16, 000 16, 500 17, 000 17, 500 18, 000 18, 500 19, 000 19, 600 20, 000 20, 500 -21,000 21, 500 22,000 22, 500 23, 000 23,500 24,000 24, 500 24, 010 Founds. 1,000 5, 000 10, 000 20, 000 30, 000 35, 000 40, 000 42, 000 43, 000 44,000 45, 000 46, 000 47, 000 48, 000 49, 000 60, 000 61, 000 62, 000 53, OOO 64,000 56, 000 58, 000 ■ 60, 000 62, 000 64, 000 6G, 000 68, 000 70, 000 72, 000 74, 000 76, 000 78, 000 80, 000 82, OOO 84,000 86, 000 83, OOO 90, 000 92, 000 94, 000 OG, 000 08. 000 99,640 Inch. 0. ■ . 000150 .000375 . 000700 . 001000 . 001200 . 001425 . 001450 .001475 . 001.500 .001550 .001600 .001625 . 0(11675 . 001725 . 001850 .002100 . 002500 . 003150 . 003925 . 005000 .006500 . 008n25 . 009800 .011500 . 013375 . 015000 . 016875 . 018700 . 021000 . 022750 . 025000 . 027600 . 030500 . 033600 .037000 .041000 . 045000 .0500 .0550 .0675 .0800 .1175 ' Inch, 0. . 000150 . 000226 . 000325 . 000300 . 000200 . 000225 . 000025 .000025 . 000025 . 000050 ,000050 . 000025 .000050 . 000050 . 000125 . 000350 . 000400 . 000650 .000775 . 001076 . 001500 . 001525 . 001775 .001700 . 001875 .001625 . 001875 . 001825 .002300 .001750 . 002250 . 002500 . 003000 . 003000 . 003500 .001000 .004000 . 00.50 .0060 .0125 .0125 .0375 Inch. 0. 0. Inch. Initial load. [Uasatlc limit. Tensile strength. General summary. Tensile strength per square inch of original section pounds.. 99.640 Elastic limit per sqnare inch of original section .do... *9,000 Elohgation per inch after rupture jnoh.. ■1*29 Elongation per inch under strain at elastic limit j " ■"OlpJ Eednbtioniu diameter at point of rupture do... .104 Eednction in area after rupture, per centum of original section - - - - - 33. 6 Eosition of rupture .".60 from neck Character of brolcen surface granular ; silky center Elongation of inch sections ".07, ".09, ".12, ".28* 138 12-INCH B. L. RIFLE, NO. 1. No. 3907. Marks, i^^^ Diameter, ".564. Sectional area, .25 square inch. Gauged length, 4". Applied loads. Total. -Per square iDCU. Blon^ation per mch. Successive elonjration per inch. Permanent set. Successive permanent set. Keniarks. Pounds. 250 1,250 2,500 5,000 7,600 8,750 10, 000 10, 600 10, 750 11, 000 11,260 11,500 11,750 12, OOO 12,250 12, 500 12, 750 13, 000 13, 250 13, 500 13, 750 14, 000 14, 500 15, 000 15, 500 16, 000 16, 500 17, 000 17, 500 18, 000 . 18, 500 19, 000 19, 500 20, 000 20, 500 21, 000 21, 500 22, 000 22, 500 23, 000 23, 500 23, 860 Pounds. 1,000 5,000 10, 000 ^0, 000 30, 000 35, 000 40, 000 42, 000 43, 000 44, 000 46, 000 46, 000 47, 000 48, 000 49, 000 50, 000 51, 000 62, 000 63, 000 54, 000 55, 000 56, 000 68, 000 60, 000 62, 000 64, 000 66, 000 68, 000 70, 000 72, 000 74, 000 76, 000 78, 000 80, 000 82, 000 84, 000 86, 000 88, 000 90, 000 92, 000 94, 000 95, 440 iTlch. 0. . 000150 . 000.300 . 000650 .000975 .0011.50 .001260 . 001350 . 001375 .001400 . 001426 .001450 . 001500 . 001550 . 001600 . 001660 . 001706 .001760 . 003375 . 006025 . 16000 . 007000 . 008675 . 010425 .012500 .014375 .016250 .018250 . 020600 . 022500 . 025000 . 027500 .080600 . 033600 .0350 .0425 .0476 .0526 .060ff .0725 .0875 .1325 Inch, 0. . 000150 . 000150 . 000350 . 000325 .000175 .000100 . 000100 . 000025 . 000025 . 000025 . 000026 . 000050 .000050 . 000050 . 000050 . 000050 . 000050 .001625 .001650 . 000975 .001000 . 001675 . 0U1750 . 002075 . 001875 .001876 . 002000 . 002260 . 002000 . 002500 . 002500 . 00»000 . 003000 .0015 .0075 .0050 .0060 . 0076 .0125 .0150 .0450 Inch. 0. 0. Inch. Initial load. . 000025 .000026 Elastic limit. Tensile strength. General summary. Tensile strenctb per square inch of original section pounds.. 95,440 Elastic limit per square inch of original section .do... 52, OiiO .Elongation perinea after rupture inch.. .1700 Elongation per inch under strain at elastic limit do .. .001750 Keductioh in diameter at point of rupture do... .144 Bedaction in area after rupture, per centum of original section '." 44. 6 Position of rupture f'.io from neck Character of broken surface silky, 60 per cent. ; granular at circumference, 40 per cent Elongation of inch sections ".16 ".32* ".12 " 09 12-INCH B. 1,. EIPLE, NO. 1. No. 3908. Marlrs, ^^^m Diameter, ".564. Sectional area, .25 square inch. Gauged length, 4". 139 Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. Successive permanent set. Bemarks. Total. Per square iuch. Pounds. 250 1,250 2,500 5,000 7,500 8, 760 10, 000 10, 600 10,760 11,000 11, 260 11, 50O 11, 750 12, 000 12,250 12, 500 13, 000 13, 500- 14, 000 14, 500 15, 000 15, 600 16,000 16, 500 17, 000 17, 500 18, 000 18, 500 19, 000 19, 500 20, 000 20, 500 21,000 21,500 22, 000 22, 500 22, 680 Pounds. 1,000 5,000 10, 000 20, 000 30, 000 35,000 40, OOO 42, 000 43, 000 44, 000 45, 000 46, 000 47,000 48, 000 49, 000 50, 000 - 62, 000 • 54, 000' 56, 000 58, 000 60, 000 62, 000 64, 000 66, 000 68,000 70, 000 72, 000 74, OOO 76, 000 78, 000 80, 000 82, 000 84, 000 86, 000 88,000 90, 000 90,720 Inch. 0. . 000150 . 000325 .000675 . OOIOOO . 001200 .001425 . 001475 .001675 .001775 .002060 . 003250 . 004500 .004950 . 0C6425 .006260 . 007925 .009625 .011475 .013000 . 015076 . 017250 .019375 .021750 .024200 . 027125 .030000 .033000 .036625 .0425 .0475 .0525 .0675 .0700 .0825 .1075 .1525 Inch. 0. . 000150 . 000225 . 000350 . 000325 . 000200 .000225 . 000050 .000100 . 000200 .000275 .001200 .001250 . 000450 .000475 . 000825 .001675 . 0017U0 . 001850 .001525 .002075 .002175 . 002125 .002375 . 002460 . 002935 . 002875 .003000 . 003625 .005875 .0050 .0050 .0060 .0125 . 0125 . 0250 .0460 Inch. 0. 0. Inch. 0. Initial load. Elastic limit.' Tensile stronsth. -0. . 000050 .000050 ^ General summary. Tensile strength per square inch of original section pounds.. 90,720 ^Elastic limit per square inch of originfu section do... 42, 000 Elongation per inch after rapture inch.. .1400 Elongation per inch under strain at elastic limit do... .001475 Beductionin diameter at point of rupture ., do... .lo4 Bednction in area after rupture, per centum of original section ■ 41. 9 Position of rupture 1".40 from neck Character of broken surface silky Elongation of inch sections MO, ".14, ".34*, ".18 140 12-INCH B. L. RIFLE, NO. 1. No. 808. Marks, ^?;\ Length, 5". Diameter, ".798. Sectional area, .50 square inch. Gauged length, 3". Applied loads. Compres- sion per incn. SucoessiTo compres- sion per incn. Permanent set. Snccessiyo puI'UJUDUUt set. Komarks. Total. Per square inch. Founds. 500 2,500 5,000 7,500 10, 000 12, 500 15, 000 17, 500 20, 000 20, 500 21, 000 21, 500 22, 000 22, 500 23,000 23, 500 24,000 24, 500 25, 000 25, 500 26, 000 26, 500 27, 000 27, 500 28, 000 44,070 Founds. 1,000 6,000 10, 000 15, 000 20, 000 . 25, 000 30, 000 35, 000 40, 000 41, 000 42,000 43, 000 44, 000 45, 000 46, 000 47, 000 ■ 48, 000 49,-000 50, 000 51, 000 52, 000 53, 000 64,000 55, 000 56, 000 88,140 Inch. 0. . 000100 . 000267 . 000433 . 000600 . 000733 . 000900 .001067 .001233 . 001267 .00)267 . 001300 .001333 . 001367 . 091400 . 001433 . 001500 . 001500 .001533 . 001567 .001600 . 001733 . 003233 . 005833 . 006500 Inch. 0. . 000100 .000167 .000166 . 000167 . 000133 .000167 .000167 . 000166 . 000034 0. .000033 . 000033 . 000034 . 000033 . 000033 . 000067 0. . 000033 . 000034 . Q00033 . 000133 . 001500 . 002600 .000667 Inch. 0. Inch. 0. Initial load. Elastic limit. Ultimate strength. 0. 0. Failed by triple flexure. 12-INCH B. L. RIFLE, NO. 1. Ko. 809. 141 Marks, i|?/o Length, 5". Diameter, ".798. Sectional area, ./50 square inch. Gauged length, 3". Applied loads. Compres- sion per inch. Successive compres- sion per inch. Permanent set. Successive permanent set. Bemarks. Total. Per square moh. Pounds. 500 2,500 6,000 7,500 10, 000 12,500 15,000 17,500 20, 000 22, 500 23, 000 23, 50O 24, 000 24,500 25,000 25, 500 26, 000 26, 500 27,000 37,500 28,000 43, 300 Pounds. 1,000 5,000 10, 000 15, 000 20, 000 25, 000 30, 000 35,000 40,000 45,000 46, 000 47, 000 48, 000 49, 000 50, 000 51, 000 52, 000 53,000 54, 000 55, 000 56, 000 86,600 Inch. 0. . OOOIOO . 000267 . 000400 .000533 .000700 . C00950 .001100 . 001267 .001400 . 001433 .001467 . 001600 . 001833 . 002500 . 003267 . 003833 . 0O4 JOO . 004933 .005467 .006433 Inch. 0. .000100 .000167 . 000133 .000133 .000167 .000250 . 000150 .000167 . 000133 .000033 . 000034 . 000033 . 000333 .000667 . 000767 . 000566 . 000667 . 000133 . 000534 . 000966 Inch. 0. ^ Inch. 0. Initial load. Elastic limit, iritimato strength. 0. 0. Failed by triple flexure. 142 12-INCII B. L. EIFLE, NO. 1. No. 810. Length, 5". Diameter, ".798. Sectional area, .50 square inch. Gauged length, 3". Applied loads. Compres- sion per inch. Successive compres- sion per inch. Permanent set. Successive permanent set. liemarks. Total. Per square inch. Pounds. 500 2,500 . 5,000 7,600 10, 000 12, 500 16, OQO 17, 500 20, 000 20, 600 21,000 21,500 22, ono 22,600 23, 000 23, 500 24, 000 24, 600 , 25,000 26, 600 26, 000 , 26, 500 27, 000 42,570 -i.— : Pounds. 1,000 6,000 10,000 16, 000 20, 000 2.5, 000 30, 000 36, 000 40, 000 41, 000 42, 000 43.000 44, 000 4i>, 000 40, 003 47, 000 48, 000 49, OOO ' 60,000 51, 000 62, 000 53, 000 54, 000 86, UO Inch. 0. .000100 . 000267 . 000433 . 000600 .000733 .000901) . 001067 . 001267 .001300 .001300 . 001333 . 001367 .001500 .001700 . 002033 .003300 . 0O3867 . 004633 . OOSIOO .005767 . 006500 . 007167 Inch. 0. .000100 .000107 .000166 . 000107 . oooi;i3 . 000167 . 000167 . 001200 . 000033 0. .000033 . 000034 .000133 . 000300 . 000333 . 000267 . 000567 . 000660 . 000567 . 000667 . 000733 . 000667 Inch. 0. , Inch. 0. Initial load. Elastic limit. 0. 0. Ultimate streneth. Failed by triple flexure. 12-INCH B. L. Elt'LE, 'nO. 1. No. 811. 143 Marks, 12 e J : E7 Length, 5"., Diameter, ".798. Sectional area, .50 square inch. Gauged length, 3". Applied loads. Compress sion per inch. Successive compres- sion per incu. Permanent set. Successive permanent set. Kemarks. Total. Per square inoli. Pounds. 500 2,500 ■ 5, 000 7,500 10,000 12, 500 15,000 17, 500 20,000 20,500 21,000 21, 500 • 22, 000 22,500 23, 000 23,500 24,000 24,500 25, 000 25, 500 26,000 26, 500 27, 000 42, 910 Pounde. 1,000 B,00O 10, 000 15, 000 20, 000 25, 000 30, 000 35, 000 40, 000 41, 000 42, 000 43, 000 44, 000 45, 000 46, 000 47, 000 48, 000 49, OOO 60, 000 61,000 52, 000 53,000 64,000 85, 820 Inch. 0. . 000100 . 000233 . 000400 .000567 . 000733 . 000900 . 001067 .001233 . 001267 .001267 . 0013U0 .001333 . 001467 .001667 .002333 . 003567 .004100 . 004667 .005333 . 005967 . 006667 .007267 Inch. 0. .000100 .000133 . 000167 .000167 .000166 .000107 .000167 . 000166 .000034 0. . 000033 .000033 .000131 . 000200 . 000666 .001234 . 000533 . 000567 . 000666 .000634 . 000700 .000000 Inch. 0. Inch. 0. Initial load. Elastic limit. Ultimate strength. 0. 0. *" Failed by triple flexure. 12-mCH B. L. RIFLE, NO. 1. SPECIMENS FROM HOOPS GAS CHECK, AND BREECH BUSHING. H. Ex. 165 10 145 12-INCH B. L. JJIFLE, NO. 1. Hoop Ai. Ko. 3900. Marks, "t^m' Diameter,' ".655. Sectional area, .242 square inch. Gauged length, 4". 147 Applied loads. Elongation per inoli. Successive elongation per inch. Permanent set. Successive permanent set. Kemarks. Total. Per square Incn. Pounds. 242 1,210 2,420 4,840 ■ 7,260 9,680 10,890 12, 100 12, 342 12,584 13,068 13,692 14,036 14, 520 14,904 23, 370 Pownda. 1,000 5,000 10,000 20, 000 30,000 40, 000 45,000 50,000 51, 000 52, 000 64,000 56,000 58^ 000 60, 000 62, OOO 96,570 Inch. 0. . 000125 .000325 .000675 .001025 .001350 . 001550 . 002700 .004700 . 005100 .006250 . 007975 .009450 .011200 .012325 Inch. 0. . 000125 . 000200 . 000350 .000350 . 000325 .000200 . 001150 .002000 . 000400 .001150 . 001725 .001475 .001750 .001125 Inch. 0. 0. Inch. 0. Initial load. Elastic limit telow 50,- 000 pounds per square inch. Tensile strength. .000025 . 000950 .000025 .000925 General summary. Tensile strength per square inch of original section pounds.. 96,570 Elongation per inch after rupture inch.. .1800 Rednotioniaarea after ruptnrgi per centum of original section 42.7 Position of rupture ; 1".40 from neck Character of broken surface silky- Elongation of inch sections ,., ".16, ?'.32*, ".14, ".10 148 12-INCH B. L. RIFLE, n6. 1. No. 3901. Marks, i^e^' J)iaiiieter, ".564. Sectional area, .25 square inch. Gauged length, 4". Applied loads. Blongation per UKSh. Successive elongatioiL per inch. Fermaneut set. SucoessivB permanent set. Bemarks. Total. Per square iDCll. Pcundt. 250 1,250 2,500 6, OOU 7,600 10, 000 11,250 12, 500 12,760 13, 000 13, 260 13, 760 14, 260 14, 750 15, 250 16, 760 23,910 Fov/nda, 1,000 1 6, 000 10, 000 20, 000 30,000 40, 000 46, 000 50, 000 51, 000 62,000 63, 000 55,000 57, 000 69, 000 61,000 63, 000 96,640 Inch. 0. .000100 ; 000250 .000550 . 000900 .001275 . 001425 . 001600 .004375 . 006600 .006975 . 007950 .009750 .011500 . 013260 .014750 Inch. 0. .000100 .000160 .000300 . 000360 .000376 . 000160 . 000175 .002775 .002125 . 000476 . 000976 . 001800 .001750 . 001750 .001500 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. 0. . 000026 .000025 General summary. Tensile strength per square inch of original section pounds.. 05,6i0 Blastio limit per square inch of original section...... do... 50,000 iElongation per inch after mptuire inch.. .1625 Elongation per inch under strain at elastic limit do... .001600 Eednctionin diameter at point of rupture - do... .064 Heduction in area after rupture, per centum of original section 21.4 Position of rupture at middle of stem Character of broken surface, granular, 50 per cent. ; silky, 50 per cent. Opened cracks in surface of stem in vicinity of place of ruprare. Elongation of inch sections -... ".13. ".25*, ".17, ".10 12-INCH B, L. RIFLE, NO. 1. Hoop A3. 149 No. 3864. Marks, ^^^^* Diameter, ".564. Sectional area, .25 square inch. Gauged length, 4". Applied loads. Elongation per inch. SucoesBive elongation per jnoh. Permanent set. Successive permanent set. Eemarks. Total. Per Bonare inch. Pounde. 250 1,250 2,500 5,000 7,500 10, 000 11, 260 12, 600 12, 750 13, 000 13, 250 13, 500 13,750 14, 000 14, 260 14, 500 14,750 15, 250 15,750 16, 250 16, 760 17, 250 26, 370 Pounds. 1,000 5,000 10, 000 20, 000 30, 000 40, 000 45,000 50,000 51,000 52, 000 53, 000 54, 000 55, 000 56, 000 67, 000 58,000 5P, 000 61, 000 63, 000 65,000 67, 000 69,000 105,480 Inch. 0. . 000150 .000425 .000800 .001175 . 001550 . 001650 .001775 .001800 .'001850 . 001900 . 001950 . 002050 .002100 . 002200 . 002425 .002575 . 003800 . 005375 .007000 .008625 . 010375 0. .000150 .000276 . 000375 .000375 . 000375 .000100 . 000125 .000025 . 000050 . 000050 . 000050 . 000100 .000050 .000100 ' . 000225 .000150 , 000225 .001575 .001625 .001625 .001750 Inch. 0. 0. Inch. 0. Initial load. , Elastic limit. Tensile strength. ' . 000075 .000100 . 000075 .000025 ^ Genei^aX summary. Tensile strengtli per square incb of original section y... pounds. . 105,480 Elastic limit per i^qnare Incli of original section do... 56,000 Elongation per inch, after rupture " inch.. . 0. 1800 Elongation per inch, under strain at elastic limit do... .002100 Beduotionin diameter at point of rupture do... .094 Eednction in area after rupture, per centum of original section 30.6 Position of rupture i. at middle of stem Character of broken surface «. granular; dull, irregular shaped spot at center Elongation of inch sections ".U, ".23, ".27*, ".11 150 12-INCH B. li. EIFLE, NO. 1. Hoop A5. ISo. 3871. 12I^,A< "J T,0 Diameter, ".664. Sectional area, .25 square inch. Gauged length, 4". Applied loitdB. lElongation per incti. Successive elongation per inch. Permanent set. Snocessive permanent- set. Bemai'icg. Total Per aquare Incn. Founds. /25D 1,250 2,500 5,000 7,600 10, 000 U, 250 12, 500 12,750 13. 000 13,250 ]3, 500 13, 750 14, 000 11, 500 15,000 15, 500 16,000 16, 500 24,060 Pounds. 1,000 6,00() 10, 000 20,000 30,000 40,000 45,000 50, 000 51,000 52, 000 53, 000 54, 000 65, 000 56, 000 58, 000 60, 000 62, 000 64,000 66,000 96,240 Ineh. 0. . 000075 . 000250 .000575 . 000900 . 001250 .001125 . 001575 .001625 . 001700 .001775 . 001900 .002100 . 002700 .001875 .007000 .009500 . 010500 .012260 IncTi. 0. . 000075 .000175 . 000325 .000325 . 000350 .000176 . 000150 .000050 .000075 . 000075 .000125 . 000200 .000600 .002176 .002125 ,002500 .001000 .001750 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. 0. 0. i... General summary, Texisile strength per square inob of original section pounds. . 96,240 Elastic limit, per square inch of original section do... 63,000 Xllongation per inch after rupture inch. . . 200& Elongation per inch under strain at elastic limit do... .001775' Bednction in diameter at point of rupture do.^. .144^! IRedaotaou in area after rupture, per centum of original section 44 6. Position of rupture 1". 50 from neck Character of broken surface silky Elongation of inch sections ",11, ".16, ".37*, ".16 12-raCH, B. L. RIFLE, NO. 1. Hoop As. No. 3846. Marks, ^^ Ki a. ' Diameter, '".564. Sectional area, .25 square inch. Gauged length, 4". 151 Applied loads. Elongation per moll. SuooeBslTe elongation per inoh. Permanent set. Saeoessive permanent set. Kemarks. Total. Per square inoli. Pounds. 250 1,250 2,500 5,000 7,500 10, 000 11,250 12, 500 12,750 ' 13; 000 13, 250 13, 500 13, 760 14,000 14,250 14, 500 14,750 15, 000 IS, 250 15, 600 16,900 16, 500 17, 000 17, 500 18,000 26, 360 Pounds. 1,000 5,000 10,000 20, 000 30, 000 40, 000 45, 000 50, 000 51, 000 52, 000 63, 000 64,000 55,000- 56, 000 57, 000 58,000' 59, 000 60,000 61,000 62,000' 64, 000 66,000 68,000 70, 000 72, 000 105,440 Ineh. 0. .000125 . 000275 . 000625 .001000 .001300 . 001450 . 001675 .001725 .001750 .001775 . . 001800 ' TOO 1825 .001875 .001900 .001975 .002025 .002150 - 1 . 002300 .002525 ' .003125 . 004625 . 007000 - .009000, . 010625 JncA. 0. . 000125 . 000150 . 000350 .00C375 . 000300 . 000160 .000225 .000050 . 000025 .000025 .000025 .000025. . -. 000060 .000025 _ . 000075 - - .000050 : 000125 .000150 . . 000025 .000600 .001500 . 002375 . 002000 .001625 Inch. 0. 0. Inch. 0. Initial load. Elasticlimit. Tensile strengtii. / 0. "y* General summary. Tensile strength per sqaare inch of original aeotlon ., ponnds.. 105,440 Elastic limit per square inch of origin^ section dd... 59, OuO Elongation per inch after rupture ^... inch.. 0,1475 Elongation per inch under strain, at elastic limit do . . . . 002025 Keduction indiaiqeter at point of rupture „ i...'.,.do... , .074 Kednction in area after rupture, per centum of original section 24.6 Position of rupture T'.TO from neck Character of broken surface granular; dull eccentric spot Elongation of ihcii sections ".09, ".14, "24*, ".12 152 12-inch b. l. rifle, no. 1. Hoop B^. No. 3867. Marks, ^^^^^ Diameter, ".564. Sectional area, .25 square inch. Qauged length, 4". Applied loads. Elongation' per inch. Successive elongation per inch. Permanent set. Successive permanent set. Eemarks. TotaL Per square Inch. Found«. 250 ' 1,250 2,600 5,000 71500 10,000 11,260 12.600 12, 750 13, 000 13,250, 13, 600 13,750 14, 000 14,250 14,500 14,750 15, 000 16,250 15,600 16,750 16, 000 10,250 16,500 , 17,000 17,600 18, 000 18, 500 27, 420 Povndi. 1,000 5, 000 10,000 20, 000 30, 000 40, 000 45, 000 60, 000 51, 000 62, 000 53, 000 64,000 66, OOO 66,000 57,000 88,000 69,000 60, 000 61, 000 62,000 63, 000 64, 000 65, 000 66, 000 68, 000 70, 000 73, 000 74, 000 109, 680 Inch. 0. . 000176 . 000400 .000750 .001125 .001450 .001625 .001776 ; 001 800 .001825 .001850 .001900 .001900 . 001925 .001975 .002050 . 002100 .0021JO .002176 .002250 . 002326 . 002425, .002525 .002750 . 003776 . 006276 .007850 . 009800 ' Inch. 0. .000175 . 00D225 .000350 . 000375 .000325 .000175 .000150 . 000025 .000025 .000025 .000050 0. . 000025 . 000050 . 000076 . 000050 . 000050 .000025 . 000075 . 000076 .000100 .000100 .000225 .001025 . 002500 . 001575 .001060 Inch. 0. 0. Inch. 0. Initial load. Elastic limit, not well defined. Tensile strength. 1 . 000025 .000025 General summary. "• .Tensile strength per square inch of original stotion ponnds.'. 109,680 Elastic limit per square inch of original section, not well defined do..l 61, 000 Elongation per inch after rupture inch.. 0.1600 Elongation per inch under strain at elastic limit do.... .002175 Keduction in diameter at point of rupture do... .104 deduction in area after rupture, per centum of original section '< 33.6 Position of rupture 1". 60 from neck Character of brolLen surface ...^.... ^ granulari silky center Elongation of inch sections ".11, '".28, ".14, ".11 12-INCH B. L. EIFLE, NO, 1. Hoop B5. No. 3838. Marts, ^^.^^', Diameter, ".564:. Sectional area, .25 square inch. Ganged length, 4". / 153 Applied loads.. Elongation per inch'. Snoceasive elongation per inch. Permanent set. Snooessive permanent sot. Eemarka. t Total. Per square inch. Pounds. 250 1,260 2 500 5,000 7,600 10,000 11, 250 12,500 12, 780 13, 000 13,250 13, 500 13, 750 14, 000 14,500 15, 000 16,500 16, 000 16,500 24,210 Peunds. 1, 000 6,000 10,000 20, 000 30,000 40, 000 45, 000 50, 000 51, 000 52, 000 53, 000 64,000' 55, OOU 66, 000 58, 000 60, 000 62, 000 64,000 66.000 96,840 Inch. 0. . 000050 .000300 .000625 . 000975 . 001300 . 001450 . 001675 .001700 .001725 .001775 .001975 . 002275'^ . 002675 . 004176 . 006300 .008375 . 010176 .011950 Inch. 0. . 000050 . 000250 . 000325 . 000350 .000326 .000180 . 000225 ' .000025 ; 000025 . 000050 .000200 . 000300 . 000400 .001500 .002125 . 002075 .001800 .001775 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. 0. 0. G-eneral summary. ^enBile atrengtli per square incli of orifiinal section ponnds.. 66,840 Elastic limit per square iDOh of original section .do... 53,000 Elongation per inch after rnpture inch.. 0. 1925 Elongation per inch under strain at elastic limit ...do... .001775 deduction in diameter at point of rupture ....do... . 134 BeduoUon in area after rupture, per centum of original sectiou 41.9 Position of rupture .\1".90 from neck Character of broken surface dull,. silky Elongation of inch flections ".13, ".36*, M7, ".11 154 12 -INCH B. L. RIFLE, NO. 1. Hoop Bj. No. 3872. Marks, ^^^^^ Diameter, ".664. Sectional area, .25 square inch. Gauged length, 4". Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. Sacceasive permanent set, iJejnarks. Total. Per square inch. Pov/nds. .. 260 , 1, 250 1 2,500 5,000 7,500 M,000 11, 250 12, 500 12,750 13, 000 13,260 13, 500 13,760 14,000 14, 250 14, 500 14,760 15, 000 15, 250 15, 600 16,000 16, 600 17,000 17, 500 !8, 000 27,120 Pounds. 1, 000 5,000 10, 000 20,000 30, 000 40,000 45, 000 60, 000 51, 000 52, 000 53, 000 54, 000 55, OOO 56,000 57, 000 58, 000 69, 000 GO, 000 61,000 62,000 64, 000 66, 000 68,000 70, 000 72, 000 108,480 Inch. 0. . 000125 . 000250 .000625 .000960 . 001325 . 001450 .001625 .001650 .001700 .001750 .001800 . 001850 .001900 . 001925 .001975 .002050 . 002175 .002325 . 002675 . 003900 . 005750 . 007500 .009000 .010750 Inch. 0. . 000125 . 000125 .000375 .000325 . 000375 .000125 .000175 . 000025 . 000050 .000050 . 000050 . 000050 . 000050 .000025 .000060 . 000075 . 000126 .000150 .000350 . 001225 .001850 . 001750 .001500 . 001170 Inch. 0. 0. Inch, 0. Initial load. Elastic limit. Tensile strength. 0. 0. General summary. Tenailfi strength per square inch of origiual section pounds.. 108,480 Elastic limit per eqnare inch of original section do... 59, 000 Elongation per inch after rupture inch ... . 1750 Elongation per inch under strain at elastic limit do.. ,002050 Reduction in diameter at point of rupture do... .104 Kednotion in area after rupture, per centum of original section 33. 5 Position of rupture ". 6 from middle of stem Character of broken surface silky, interspersed with granular metal at the circumference Elongation of inch sections ' ". 14, ". 29% ". 16, ", 11 12-INCH B. L. RIFLE, NO, 1. Hoop O3. N«. 3874. Marks, 12 K.O. Diameter, ".564. Sectional area, .25 square inch. jhauged length, 4". 156 Applied loads. Elongation per inch. SnocesBiTe elongation per inch. Permanent set. Soooessive permanent set. Bemarks. Total- Per square inch. Powndt. 250 1,250 2,500 5,000 7,500 10,000 11 250 ' FowndB. 1,000 6,000 lOrOOO 20,000 30,000 40,000 45,000 60,000 51,000 52, 000 63, 000 54,000 65, 000 56, 000 57,000 68,000 59, 000 60,000 61,000 62, 000 63,000 65,000 67, 000 69, 000 71,000 73, 000 105,640 . Itich. 0. .000076 .000260 .000575 .000876 .001260 . 001426 .001575 .001575 .001625- .001700 . 001750 .001800 . 001825 .001826 . 001926 . 001950 . 002026 .002K5 . 002425 .002725 .003975 .005725 .007725 .009475 .010975 Inch. 0. .000075 . 000175 . 000825 . 000300 .000376 . 000175 " .000150 0. .000050 . 000075 .000060 .000060 .000025 0. . 000100 .000025 .000075 .000100 . 000300 . 000300 .001250 .001760 . 002000 .001760 . 001600 Inchi 0. 0. Inch, 0. Initial load. Elastic limit. Tensile strengtli. 0. 0. 12,.50O 12,760 13,000 13,250' 13, 600 13,7.')0 14, 000- 14, 250 14, 600' 14,750 15,000 15, MO 15, 500 15,750 16,250 46, 750 17, 250 17,750 - 18,250 26,410 ' Gmeral summary. laWe atrength, per sqnare inch of original section pounds.. 105,640 stic limit, per BQiiare inoli of original section ....:.. do... 60,000 Dgation per inca after rupture .inch . . . 142S agation per inch under strain at elastic limit do^.. .002C25 156 12-inch b. l. rifle, no. 1. Hoop C^. No. 3839. Marks, ^^^* Diameter/ ".564. Sectional area, .25 sqnare inch. Gauged length, 4". Applied loads. Elongation per inoh. Saooessive elongation per inch. Permanent set. Successive permanent set. Remarks. ' Total. Per sqnare inoh. Pounds. 250 1,260 2,500 5,000 7,500 10, 000 11,250 12,500 12,760 13, 000 13,250 13, 500 13,750 14, 000 14, 250 14,600 14, 750 15, 000 15, 250 16,750 16,260 16,750 17,250 17,750 24,620 Pounds. : 1,480 6,000 10, 000 20, 000 30,000 40, 000 45,000 50,000 61,000 52, 000 53, 000 54,000 55, 000 56,000 57, 000 58, 000 69, 000 60, 000 61, 000 63, 000 66, 000 67,000 69,000 71, 000 98,480 Inch. 0. . 000125 .000300 . 000676 .001025 .001425 . 001550 .001750 .001775 .001800 . 001825 .001875 .001926 . 001975 .0020;5 . 002075 .002200 . 002400 . 002825 .003700 ' .007250 .009250 .011200 .013760 inch. 0. .000125 .000176 .000376 .000350 .000400 .000126 .000200 . 000026 .000026 .000026 . 000050 .000050 . 000050 .000050 . 000050 . 000125 .000200 . 000425 .000876 .003550 . 002000 .001950 .002650 Inch. 0. 0. Inch. 0. Initialload. Elastic limit. Tensile strength. 0. 0. General summary. Tensile strength per square incli of original section ponnds.. 98, 48C Xilastio limit per square inch of original section.. 2 do... 68,000 Elongation per inch aftei; rupture inch.. 0. 170fl Elongation per inch under strain at elasticlimit do... .00207S Beduotion in diameter at point of rupture do... .154 ,!Etoduction in area after rupture, per centum of original section 47. S Position of rupture 1".25 from necli Character of broken surface ^ fiilk;y Elongation of inoh aeotions ^20,".28\".11,".0S 12-inch b. l. kifle, no. 1. Hoop 0(. No. 3873. Marks, 1^1; 8- Diameter, ".564. Sectional area, .25 sqaare incb. Gauged length, 4". 157 Applied loads. Elongation per juoh. SuocesBlve elongation per inch. Permanent set. Snccessive permanent set. Bemarks. Total. Per square inch. Pounds. 250 1,250 2,500 J, 000 7,600 10, 000 11,260 12, 500 12,750 13, 000 13, 250 13, 500 13, 750 14, 000 . 14, 250 14, 750 15, 250 15, 750 16, 250 16, 750 25, 710 Pov.nds. 1,000 5,000 10, 000 20, 000 30, 000 40, 000 45,000 50,000 51, 000 52, 000 53,000 54, OOO 55, OOO 66,000 57, 000 59, 000 61, 000 63, 000 65, 000 67, 000 102, 840 Inch. _ 0. . 000150 .000260 . 000650 .000950 .001275 . 001475 .001700 .001750 .001800 .001900 .001975 . 002250 .002450 . 002625 .003200 . 004575 .006600 . 008500 .009760 Inch. 0. .000150 .000100 . 000400 .000300 . 000325 .000200 . 000225 .000060 . 005050 .000100 . 000075 .000275 . 000200 .000175 .000575 . 001375 . 001925 . 002000 . 001250 Inch. 0. 0. Inch. 0. Initial load. Elasticlimit. Tensile strength. .000025 . 000026 .000025 . 000025 General summary. Xenaiie Btrengtb. per square iDCh of original aeotion poands., 102.840 Blastic limit per sqnare inch of origiaaT section ., , do... 54, 000 Elongation per inoli after rapture inch . . . 1550 Elongation per inch under strain at elastic limit do... .001075 Beduction in diameter at point o:f rupture do... .104 Bedaction in area after rapture, per centum of original section 33. 5 Position of rupture ".6 from middle of stem Character of broken surface .'. granular, silky center Slongation of inch sect jpna ^ i 'M2, ".29% 'M3, ".08 158 22-INCH B. L. RIFLK, NO. 1. Hoop On. No. 3868. Marks, bt'.o' Diameter, ".564. Sectional area, .25 square inch. Gauged length, 4". , Applied loads. Elongation per moh. Saccessive elongation per inch. Permanent set. Successive permanent set. Eemarks. Total. Per square inch. Pounds. 250 1,250 2,500 5,000 7,600 10, 000 11, 250 12, 600 12, 760 13,000 13, 260 13, 500 13, 760 14,000 14, 250 14, 600 14, 750 15, 000 15, 500 16, 000 16, 500 17, 000 25, 960 Pounds. 1,000 6,000 10, 000 20, 000 30, 000 40, 000 45, 000 60, 000 51, 000 62, 000 53, 000 64,000 56, 000 56, 000 57, 000 58, 000 59, 000 60, 000 62, 000 64,000 66, 000 68, 000 103, 840 Inch. 0. .000150 ,000360 .000725 .001025 .001400 .001650 . 001750 ".001800 .001826 . 001875. . 001925 .001925 .002000 . 002050 . 002125 . 002300 .002600 . 003060 .004875 .006760 .008760 Inch. 0. .000150 - . 000200 . 000375 . 000300 .000376 , .000150 ' . 000200 . 000050 . 000025 .000050 . 000050 0. . 000075 . 000050 .000075 .000175 .000200 .000550 .001825 . 001875 .002000 Inch. 0. 0. Inch, 0. Initial load. ' Elastic limit Tensile strength. .000025 . 000026 . 000025 0. ' General summary. Tensile strength per square inch of original sectlou pounda.. 103, 84< Elastic limit per square inch of original eection do .. 57.001 ;Elongation per inch after rupture inch.. 0.172! iElongation per inch under strain art elastic limit do...,. 002051 Kddaction in diameter_at point of rupture O.lOf Seduction in area after rupture, per centum of original section - 33.1 Position of rupture 2".25fi'om necl Character of broken surface granular, silky centei Elongation of inch aeotions "Ji)/^20^".27,'M: 12-INCH B. L. EIFLE, NO. 1. Hoop 0», 159 No. 3821. Marks, bt',o° Diameter, ".664. Sectional area, .25 square inch. Gauged length, 4". Applied loads. Elongation per inch. SnocesslTe elongation per inch. Permanent set. Successive permanent set. Bemarks. Total. Per square In eh. Pounds. 250 ),250 2,600 6,000 7,600 10, 000 11, 260 12, 500 12,760 13, 000 13, 260 13, 760 14,250 ■14, 750 16, 250 16,750 26, 310 Pounds. 1,000 5,000 10, 000 20, 000 30, 000 40, 000 45, 000 60, 000 51, 000 62, 000 63, 000 55, 000 57, 000 59, 000 61,000 63, 000 105, 240 Inch. 0. . 00015ft . 00030(1 .000060 .001000 .001360 .001625 ' .001825 .001960 .002076 .002175 . 002575 .003325 .004350 .005550 .006725 Inch. 0. . 000150 .000150 . 000350 . 000360 . 000350 . 000175 .000300 .000125 . 000125 . 000100 . 000400 . 000750 .001025 .001200 .001175 Inch. 0. 0. Inch. 0. Initial load. Elastic limit (approxi- mate). Tensile strength. .000025 .000125 ■ .000025 . 000100 General summary. Tensile strength per eqaareincli of original section poands.. 105,240 DSIasilclimitperaqnarelnchof original section (approximate) do... 50,000 Elongation per inch after rapture inch.. 0. 1200 Elongation per inch, tinder strain at elastic limit .■ do... .001825 Bednctionin diameter at point of rapture do... .074 Beduction in area after rupture, per centum of original section 24.6 Position of rapture 1". 55 from neck Character of hroken surface granular, eilky spot at the circumference Elongation of incli sections ".06, ".09, ".23*, ".10 160 12-JNCH B. L. EIFLE, NO. 1. Fo. 3853. Marks, ^It'^o' Diameter, ".564. Sectional area, .25 square inch. Gauged length, 4". Applied loads. Elongation, per inch. Successive elongation per inch. \ Permanent set. Saocespive permanent set. Kemarks. Total. Per square inch. Founds, 250 1,250 2,500 5,000 7,500 10, 000 11,250 12, 500 12, 760 13,000 13, 260 13, 600 13, 750 -14, 000 14, 520 14, 500 14, 750 15,000 16, SOD 16,000 16, 500 17,000 17, 500 26,420 Founds, 1, 000 ' 5,000 10, 000 20, 000 30, 000 40, 000 45, 000 60, 000 51, 000 52, 000 63, 000 64, 000 55, 000 66, 000 67, 000 58, 000 , 69, 000 60, 000 62, 000 64, 000 66, 000 68, ODD 70, 000 105, 680 Inch, 0. . 000075 .000300 . 000625 . 000025 . 001300 . 001475 .001675 . 001700 .001726 . 001776 . 001860 .001900 . 002000 . 002050 . 002225 . 002375 . 002575 . 003625 . 005175 . 006750 . 008375 . 010000 Inch. 0. . 000075 . 000225 . 000325 . 000300 . 000375 . 000175 . 000200 . 000026 . 000025 . 000050 . 000075 . 000050 .000100 . 000050 .000175 . 000150 . 000200 .001050 . 001550 .001675 . 001626 . 001625 Inch, 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strengtb. 0. 0. J General summary. Tensile strength per square inch of original section Iponnds.. 105 680 Elastic limit per square inch of original section do... 57' 000 Elongation per inch after rapture inch!! 0.01575 Elongation per inch under strain at elastic limit do.!! .002050 Beductlonin diameter at point of rupture do!"! ' .094 (Eediiotion in area after rapture, per centum of original section 30 6 ToSition of rupture - 2". 20 from neck Character of broken surface granular, silky center Elongation of inch sec tioiis "0. 09, ". 24, ". 18, ". 12 12-INCH B. L. EIFLK, NO. 1. Hoop D2 163 No. 38C5. Marks, ^^i^'^' Diameter, ".564. Sectional area, .25 square incb. Gauged length, 4". Applied loads. Elongation per inch. Suocessive elongation per inch. Permanent set. Successive permanent set. Kemarks. Total. For sqnare ipcb. Pounds, 250 1,250 2,500 ' 5,000 7,500 10, 000 11, 250 12,500 12,750 , 13,000 13,250 13, 500 IS, 750 14, 000 14,250 14, 760 15, 250 15,750 16, 250 16,750 24,280 Pounds, 1,000 5,00a 10, 000 20, 000 30,000 40, 000 45,000 50,000 51, 000 52,000 53,000 _ 64,000 55,000 56,000 57, 000 59,000 61, 000 63,000 65, 000 67, 000 97, 120 Inch, 0. .000125 .000375 . 000675 .001025 . 001425 . 001675 .001775 .001850 . 001875 .001925 . 002000 .002150 . 002300 . 002560 .001260 . 006625 .008500 . 010300 .012000 Inch, 0. .000125 .000250 . 000300 .000360 . 000400 .000150 . 000200 . 000075 . 000025 . 000050 .000075 . 000150 . 000150 . 000260 .001700 . 002375 .001875 . 001800 .001700 Inch, 0. 0. Inch, 0. Initial load. Elaati) limit. Tensile strength. .000025 . 000100 .000025 . 000075 , Genei'al summary. Tensile strength per sqnare inch of ori^nal section ponnds.. 97,120 Blastic limit per square inch of original section , ...do.-. 54,000 Elongation per inch after ruptnre inch.. 0.1750 Elongation per inch under strain at elastic limit do... .002000 Elednction in diameter at point of ruptare do. . . . 154 Reduction in area after rupture, per centum of original section 47.2 Position of mpture 1".40 from neck [Character of broken surface silk j Elongation of inch sections ..„ \ ".08^ ".10, ",23*, ".19 162 12-INCH B. L, EIFLE, NO. 1. Hoop D4. i^^o. 3854 Marks, ^^r^'o°* Diameter, ".564. Sectional area, .25 square incb. Gauged length, 4". Applied loads. Elongation per inch. Succeasive elongation per moh. Permanent ■ set. Successive permanent set. Hemarl^s. Total. Per square incn. ' Povm:ds. 250 1,250 2,500 5,000 7,500 10,000 11, 250 12,500 12, 750 13, 000 13, 250 13, 500 13,750 14, 000 14, 250 14, 500 14,750 15,000 15,250 15, BOO 16, 000 16, 600 17, 000 17,500 18,000 25,320 Pounds. 1,000 3,000 10, 000 20, 000 30, 000 40,000 45, 000 50, 000 • 51, 000 52, 000 53, 000 64,000 55, 000 56, 000 57, 000 68, 000 59, 000 60, 000 61, 000 62, 000 64,000 66, 000 68,000 70, 000 72, 000 101,280 Inch. 0. . 000050 . 000200 . 000500 . 000825 . 001175 . 001326 .001625 . 001650 . 001700 .001725 .001775 .001800 . 001825 .001850 . 001925 . 001975 .002125 . 002925 .004375 . 005450 .008750 .010300 .012000 .013700 Inch. 0. .000050 .000150 .000300 . 000325 ,000350 .000150 .000300 . 000025 . 000050 .000025 . 000050 . 000025 . 000625 . 000025 . 000075 . 000050 .000160 .000800 .001450 .001075 .003300 . 001550 .001700 .001700 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. TensUe strength. .000025 . 000025 . 000025 0. ' General summary. Tensile Btrengfch per sqnareiiicli of orieinal sectioii pounds.. 101,280 ^Elastic limit per square inch of original section do... 59,000 ^Elongation per inch after rupture ^ .,.:, inch.. 0.1750 : XHongation per inch tinder strain at elastic limit do... .001975 ^Reduction in diameter at point of mptnre do. . - . 144 Bedaction in area after rnpture, per centam of original section 44.5 Position of rupture 1". 15 from neck Character of broken surface silky Iilongation of inch sections ....".30*, ".20, "11, ",09 12-INCH B. L. EIPLE, NO. 1. 163 12-INCH STEEL B. L. RIFLE, NO. 1. Speeifio gravity and hardness of hoops. Hoop. Marks on speci- men. Speoiflo gravity.' Hardness. 12E,A3 E4M... 12EiBj E4M... 12E, Ci E4M... 12E, Da E4M... 7. 8489 7.8481- 7.8511 7.8481 21.64 23.70 20. 93 22.39 Tkunnion Hoop. No. 3903. Marks, J^^TH Diameter, ".564. Sectional area, .25 square inoli. Gauged length, 4". Applied loads. Elongation ,pcr mcli. Suooessivo elongation per iincb. Permanent set. Successive permanent set. Eemarks. Total. Per square incb. Pounds. 250 ■ 1, 250 2,600 5,000 7,600 10, 000 11,000 12, 250 12, 500 11,750 12, 000 12,500 13,000 13,500 14,000 14, 500 22, 290 Pounds. 1,000 5, 000 10, 000 20, UOO 30,000 40, 000 44, 000 45,000 46, 000 47, 000 48, 000 50,000 52, 000 ^ 54,000 56,000 58, 000 89,160 Inch. 0. . 000150 . 000300 . 000075 . 000975 .001350 .001475 . 003G25 .004325 . 004750 . 006425 . 007760 . 009750 . 011750 .013375 ■ • .015750 Inch. 0. . 000150 . 000150 .000375 .000300 . 000375 . 000125 .002150 .000700 .000425 . 001675 .001325 . 002000 .002000 .001625 .002375 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. . 002050 . 002050 . 004575 . 002525 General summary, , Tensile strength per eqnare inch of original section pounds. , 89 160 Elasticlimitper square inch of original section do." 44*000 Elongation per inch after ruptnre... inch.. 0.2075 Elongation per inch under strain at elastic limit .,.._ do... .001473 Eednctionin diameter at point of rapture do.!! ' .164 Beduotion in area after rupture, per centum of original section !. 49.7 Position of rapture , 2" from neck Character of hroken surface silky Elongation of inch sections ".13, ".41*, ".17, "12 164 12-INCH B. L. RIFLE, NO. 1. Gas Check. No. 3855. Marks, 12 E, go Diameter, ".564. Sectional area, .25 sqaare inch. Gauged- length, 3". Applied lonrds. Elongation per inch. Snocessive elongation- per inch. Fermandnt set. Snocessive permanent set. Bemarks. Total. Per square inch. Founds. 260 1,260 2,600 7,S00 12,600 16,000 17,500 17, 750 18, 000 18, 250 18, 600 18, 760 19, 000 19, 500 20, 000 20, 500 21, 000 21, 600 33, 680 Pounds. 1,000 5,000 io.ooo 30, 000 50, 000 60, 000 70, 000 71,000 72, 000 73, 000 74,000 75, 000 76,000 78,000 80, 000 82, 000 84, 000 86, 000 134, 720 Inch. 0. . 000 100 .000267 .001000 . 001667 . 002000 . 002333 . 002367 .002400 . 002433 . 002533 . 002633 . 002867 .003367 . 004167 . 004900 . 005933 . 007000 Inch. 0. .000100 . 000167 . 000733 . 000667 .000833 . 000333 . 000034 . 000033 . 000033 .000100 .000100 .000234 . 000600 . 000800 .000733 . 001033 .001067 Inch. 0. 0. Inch.. 0. Initial load. Elastic limit. Tensile strength. 0. 0. General summary. Tensile strengtb per square incli of original section ..pounds.. 134,720 Elastic limit per square inoli of originaf section do... 73,000 Elongation per inch after rupture inch... 0.1267 Elongation per inch under strain at elastic limit - do... ,002433 Eednction in diameter at point of rupture do... .074 Keduction in area after rupture, per centum of original section 24.6 Position of rupture ...1".30 from neck Character of broken surface , granular, silky eccentric spot Elongation of inch sections ",10, ".18,* ".10 12-INCH B, L, KIFLE, NO. No. 3856. 165 Marks, i2^g« Diameter, ".564. Sectional area, .25 square inch. Gauged length, 3". Applied loads. Hlongation per incli. Snccessive elongation per inoli. Permanent set. Successive permanent set. Kemarks. Total. Per sqnare inoii. Poundg. 250 1,250 2,500 7,500 12, 500 15,000 17, 60O 17, 750 18, 000 18,250 18, 500 18,750 19, 000 19, 250 19,500 19, 750 20,250 20, 760 21,250 21,750 22, 250 34,220 Poundi. 1,000 5,000 10, 000 30, 000 50, 000 60, 000 70, 000 71, 000 72, 000 73, 000 74, 000 75,000 76,000 77, 000 78, 000 79, OOO 81,000 83, 000 ' 85,000 87,000 89, 000 136,880 Inch. 0. .000067 .000367 . 001000 .001667 . 002033 .002433 . 002433 .002500 .002533 .002567 .002667 . 002767 .002933 .003167 .003r)00 . 004000 . 004833 .005933 .006833 .007833 Inch. 0. .000067 . 000300 . 000633 . 000667 .000366 . 000400 0. . 000067 .000033 . 000034 .000100 . 000100 .000166 .000234 .000333 .000500 . 000833 .001100 . 000900 .001000 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. .000033 .000033 .000033 0. General summary. Tensile strengtli per sqnare incli of original section pounds.. 136,880 Elasticlimit per square inch of original section do... 76,000 Elongation per inch, after rnpture inch.. 0.1200 Elongation per inch under strain at elastic limit do... .002767 I^ednctionin diameter at point of rapture ,;..do. -. .064 Eeduction in area after rapture, per centum of original section 2L 4 Position of rnpture ".65 from neck Character of broken surface graqular; silky eccentric spot Elongation of inch sections ..".00/'.09/M8* 166 12-INCH B. L, RIFLE, NO. 1. Breech BtrsniNO. Ko. 3869. Marks, 12?; g''- Diameter, ".564. Sectional area, .25 square inch. Gauged length, 3". Applied loads. Elongation per incb. Snccessive elongation per inch. Permanent set. SuccessiTe permanent set. Bemarka. Total. Per squ.ir6 inch. Pounds. 250 1,260 2,600 5,000 7,600 10, 000 11, 500 11, 750 12, 000 12, 250 12,500 12, 750 13, 000 13, 260 13, 600 13,760 14,000 14,250 14,500 14, 760 15,000 15,260 15, 500 15, 750 16, 000 16,260 16, 600 17, 000 17, 500 18, 000 18, 600 19, 000 26, 570 Pounds. 1,000 5,000 10, 000 20, 000 30, 000 40, 000 40, 000 47, 000 48, 000 49, 000 50, 000 61, 000 52, 000 53, 000 54, 000 55, 000 56, 000 57, 000 58, 000 59, 000 60, 000 61, 000 62, 000 63, 000 64, 000 66, 000 66, 000 68, 000 70, 000 72, 000 74, 000 76, 000 106, 280 Inch. 0. . 000167 .000333 .000667 . 000967 . 001267 . 001567 .001600 . 001633 .001667 .001667 .001700 . 001800 .001833 .001887 .001900 . 001933 . 001967 . 002033 . 002067 . 002100 . 002167 .002233 .002333 . 002500 .002833 .003333 .004767 . 007167 .009000 .011167 .013000 Inch. 0. . 000167 .000166 . 000334 . 000300 . 000300 .000300 . 000033 . 000033 .000034 0. . 000033 .000100 .000033 . 000034 , 000033 . 000033 . 000034 .000066 . 000034 . 000033 . 000067 . 000066 . 000100 . 000167 . 000333 .000500 . 001434 . 002400 .001833 .002167 . 001833 Inch. 0. 0. Itush. 0. Initial load. Elastic limit. Tensile strength. 0. 0. General summary. Tensile strengtli per square incli of original section ponnda.- 106,280 Elastic limit per square inch of original section do... 63,000 Elongation per incnafter rupture inch... 0.1600 Elongation per inch under strain at elastic limit do... .002333 Beduction in diameter at point of rupture do... .094 Reduction in area after rupture, per centum of original section 30,6 Position of rapture 1". 10 from neck Character of broken surface, granular, dull silky spot, extending from the circumference to center of fracture. Elongation of inch sections. —..••....«•»«. ,,,. ".22* ",-15 ".11 12- INCH B. L. RIFLE, NO. 1. 167 ■a II i g ooecs^oooooooooo oo ©'S^S'^-SJ (CtfS O'O^ (D'^r^ ©13^ t-OO OSOrHCTM-^meOt^COMTHWeOt-OO wOOogoAOtoaaoiraffiO^oo^oo ooGOoooooooooDaocooDQoooa>aaCT»aioa mconncoeQCQncocQCocQCQsonc'SCQco 168 12-INCH B. L. RIFLE, NO. 1. B5 o Q g I PL,, -■^^ O O o i.ag'-s ^ o o o © o o oS^ o o o o o o o C o C H PH 5»0IOffg->*a)01lOC0rHQ0C^e001fHO — 00 loOOOOOOOOOOOOOOOOO SOOO(009<=>OOOOOO^OC30 sooooc 5000000000000 'S'* S-S S-fi S-S'2 Sti'S a p « flow !l* >coinc~t-t*t-ooaoocoo o o COOD eot-o o o c ooooo 12-INCH B. L. EIFLE, NO, 1. 169 JoMOOcooeiaioci30mo30ccmu3oot>oo W Be Q^ OOOOOOOOOSOOOOOOOO S ccCu^'^rcD « cTeTod'w CO (^f cff irriri"i--rr-ror-i!'«D cd" Q, l-l l-lr-l T-(r-I rHi-HpliH iH i-lrHi-l OSS. teOOOOOOOOOOOOOOOOOOOO mOOOOOOOOOOOOOOOOOOOCS ^ - iaOOOOOOOOOOC9e=>(=> oaeaoooocooooooooococoooaocoaDOOoiaoeoco concQeQCQCoefseQeQmnmeQCQncncocQcocQ 12-INCH B. L. RIFLED MORTARS. CAST-IRON BODIES, STEEL HOOPS, AND GAS CHECKS. 171 HEx..._/(^X..__5] 2 IZ-iiu^^,!,, Rifled^ c/yCojriccj-^ . Cd^t Iron ^OfZz^OiS . H Ex.../ijr:..._51 2 12-lnch b. l. kifled mortaks. Oast Iron Body No. 1. (Condemned.) 173 No. 3860. Marks, i^Vtf'^ Length of stem, 24".25. Diameter, 1".129. Sectional area, I square inch. Gauged length, 20". Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. Successive permanent set. Remarks. Total. Per sqnaro incu. Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11,000 12, 000 13, 000 14,000 15, 000 16, 000 .17, 000 18, 000 19, 000 20, 000 21,000 22, 000 23, 000 24,000 25, 000 28, 010 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19; 000 20, 000 21, 000 22,000 23, 000 24,000 25, 000 28, 010 Inch. ' 0. . 000050 .000105 . 000155 .000210 . 000280 . 000360 . 000415 .000490. .000575 . 000660 .000730 .000825 . 000925 .001010 . 001130 .001240 .001380 .001515 . 001680 . 001865 . 002070 . 002305 . 002620 - . 002965 Inch. 0. . 000050 . 000055 .000060 . 000055 .000070 • . OOOOSO .000055 . 000075 . 000085 .000085 . 000070 .000095 . 000100 .000085 . 000120 .000110 .000120 . 000135 .000165 . 000185 . 000205 . 000235 .000315 . 000345 Inch. 0. Inch. 0. Initial load. Tensile strength. .000005 .000005 . 000040 . 000035 . 000065 .000025 . 000105 . 000040 . 000155 . 000060 . 000240 .000085 .000365 .000125 . 000585 . 000180 .000895 . 001150 .000310 .000255 Fractured 2" from the neck. Appearance, uniform granular. 174 12-INCH B. L. RIFLED MOKTAES. Ko. 3861. Marks, ^^^^i'^'^' Length of stem, 24".25. Diameter, 1".129. ' Sectional area, 1 square inch. Gauged length, 20". Applied loads. Elongation per incli. SncoesBiTe elongation per inch. Permanent set. Successive permanent set. Kemarks. Total. Per square inch. Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 ■ 9,000 10,000 11,000 12,000 13, 000 14, 000 15, 000 16, 000 17, 000 18,000 19, 000 20, 000 21,009 22, 000 23, 000 24,000 25, 000 28, 020 Pounds. 1,000 2,000 3,000 4,000 5,000 6,0UO 7,000 8,000 9,000 10, 000 11, 000 12,000 13,000 14, 000 15, 000 16,000 17, 000 18,000 19, 000 20, 000 21, 000 22,000 23, 000 24,000 25, 000 28,020 Inch. 0. .000050 .000100 .000150 .000205 . 000275 . 000345 .000405 . 000480 . 000550 . 000630 . 000715 . 000800 . 000900 . 001000 .001105 .001210 . 001400 . 001500 . 001660 . 001830 .002065 . 002315 . 002585 .002945 Inch. 0. .000050 .000050 .000050 .000055 . 000070 . 000070 .000060 . 000075 .000070 . 000080 . 00008S .000085 . 000100 . 000100 . 000105 . 000105 . 000190 .000100 .000160 . 000170 .000235 . 000250 . 000270 .000360 Inch. 0. Inch. 0. Initial load. Tensile strength. . 000005 . 000005 .000040 .000035 . 000060 .000020 .000100 . 000040 . 000150 . 000050 .000215 .000005 . 000365 . 000150 , . 000565 . 000200 .000870 .001130 . 006365 . 000260 Fractured 2J" from the neck. Appearance, uniform granular. 12-INCH B. L. RIFLED , MORTAKS. 175 Marks, 12 M^o^ Til, Lepgth, 12",. ' Diameter, 1".129. , Sectional area, 1 square inch. Gauged length, 10". No. 790. Applied loads. 1 Comprea- Bion per inch. Sacoeseive compres- sion per incu. Permanent set. Sncceasive permanent set. Bemarks. Total. Per square inch. Powndt. 1,000 2,000 3,000 4,000 5,000 6,000 T,000 S,000 9,000 10, 000 11, 000 12,000 13,000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22,000 23, 000 24,000 25, 000 26, 000 27,000 28,000 29, 000 30, 000 31,000 32,000 33, 000 34,000 35, 000 36, 000 37,000 38,000 39, 000 40, 000 61,480 Powids. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,;000 10, 000 11,000. 12, 000 13,000 14,000 15,000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23,000 24, 000 25,000 26, 000 27,000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 51,480 Inch. 0. . 00005 .00010 . 00015 .00021 . 00026 .00031 .00038 .00043 . 00049 .00058 . O0O63 . 00070 .00077 . 00083 .00090 . 00098 .00106 .00114 .00121 . 00128 .00135 .00142 .00151 . 00160 .00170 .00178 . 00189 .00199 . 00209 .00228 .00241 .00256 .00271 .00202 .00317 .00337 .00359 . 00400 .00440 Inch. 0. .00005 . 00005 . 00005 . 00006 . 00006 .00005 . 00007 .00005 . 00006 . 00009 .00005 .00007 . 00007 . 00006 .00007 .00008 .00008 .OOOO8 . 00007 . 00007 . 00007 . 00007 ..00009 . 00009 . 00010 .00008 . 00011 .00010 . 00010 . 00019 .00013 .00015 . 00015 .00021 . 000 :!5 .00020 .00022 . 00041 .00040 Inch. 0. Inch. 0. Initial load. Ultimate strength. 0. .00002 . 00002 .00007 .00005 . 00014 . 00007 ■ . 00024 .00010 . 00047 .00023 .00096 .00049 .00215 . 00119 1 Failed by triple flexure. 176 12-INCH B. ,L. RIFLED MORTAES. No. 791. Marks/2M^o,TEi Length, 10".5! Diameter, 1".129. Sectional area, 1 square incli. Gauged length, 5". Applied loads. Total. Per sqaare mcJi. Compres- sion per iucta. Successive compres- aionper iucu. Permanent set. Successive permanent set. Eemarks. Founds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 ' 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14,000 15, 000 16, 000 17,000 18, 000 19,000 20, 000 21, 000 22, 000 23, 000 21,000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 60, 150 Pounds, 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12,000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24,000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 34, 000 33, 000 36, 000 87, 000 38, 000 39, 000 40, 000 60, ISO Inch. 0. . 00004 . 00010 . 00014 . 00020 . 00024 .00030 . 00036 . 00040 . 00046 . 00052 .00060 . 00066 .00072 . 00078 . 00084 . 00092 . 00098 .00104 . 00112 .00120 . 00128 . 00136 .00144 . 00160 . 00160 . 00170 . 00180 . 00190 . 00202 .00220 .00232 , 00246 . 00264 . 00286 . 00310 . 00332 . 00364 . 00400 .00440 Inch. 0. . 00004 . 00006 . 00004 .00006^ . 00004 . 00006 . 00006 . 00004 . 00006 . 00006 . 00008 . 00006 . 00006 . 00006 . 00006 . 00008 . OO0O6 . 00006 . 00008 . 00008 . 00008 . 00008 . 00008 . 00006 . 00010 . 00010 .00010 . 00010 .00012 .00018 .00012 . 00014 .00018 . 00022 . 00024 . 00022 . 00032 . 00036 . 00040 Inch. 0. Inch. 0. Initial load. . 00042 . 00020 . 00052 Ultima te^strength. Failed by triple flexure. 12-INCH B. L. EIFLED MOETAKS. 177 Ko. 3862. Marks, 12 ^B^TE. Length of stem, 22".88. Diameter, 1".129. Sectional area, 1 square inch. Guaged length, 20". Applied loads. Elongation per inch. Snooesslve elongation per InctL. Permanent set. Successive peru:ianent- eet. Bemarks. Total. Per BQnare inon. Pounda. 1,000 2,000 3,000 4,000 ~ 5, OOO 6,000 7,000 8,000 9,000 10,000 11, 000 12,000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 009 21, 000 22,000 23, 000 24, 000 23, 000 30,020 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12,000 ■ 13, 000 14,000 15, 000 16, 000 17,000 IS, 000 19, 000 20, 000 21,000 22, 000 23,000 24,000 25, 000 80,020 Inch. 0. .000050 . 000095 .000145 . 000195 .000245 .000295 .000345 .000400 .000465 .000320 .000595 .000660 . 000725 .000790 . 000865 .000945 . 001035 .001120 .001210 . 001320 .001450 .001383 .001745 .001925 Inch. 0. . 000050 .000045 . 000030 . 000050 . 000030 .000050 . 000050 .000055 . 000065 . 000055 . 000075 .000063 . O000B5 .000063 . 000075 . 000080 .000090 .000085 .000090 .000110 .000130 .000135 .000160 . 000180 Inoh. 0. Inch. Initial load. Tensile strength. 0. .000030 .000020 .000035 .000015 .000055 .000020 .000085 .000030 . 000120 . 000035 .000185 . 000065 .000280 . 000093 . 000420 . 000320 .606140 .000100 Fractured 4|" from neck. Appearance, uniform granular. H. Ex. 165 12 178 12-INCH B. L. RIFLED MORTARS. Ho. 3863. Length of stem, 23".37. Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 20". Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. Successive permanent set. Eemarks. TotaL Per square incn. Pounds. 1,000 2,000 3,000 4,000 6,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 ■ 15,000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24,000 25, 000 31,600 1,000 2,000 4,000 6,000 8,000 10, 000 12, 000 14, 000 16, 000 18, 000 20, 000 22, 000 24, 000 22, 000 20, 000 18, 000 16, 000 14,000 12, 000 10, 000 8,000 6,000 4,000 2,000 1,000 20, 000 22, 000 24, 000 22, 000 20, 000 22, 000 24, 000 22, 000 20, 000 31, 780 Pounds. 1,000 2,000 3,000 4,000 6,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12,000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20,000 21, 000 ' 22, 000 23, 000 24, 000 26, 000 31, 600 1,000 2,000 4,000 6,000 8,000 10, 000 12,000 14, 000 16, 000 18, 000 20,000 22, OOO 24,000 22,000- 20, 000 18, 000 16, 000 14,000 12, 000 10, 000 8,000 6,000 4,000 2,000 1,000 20, 000 22, 000 24,000 22, 000 20, 000 22, 000 24, 000 22, 000 20,000 31,780 Inch. 0. . 000050 . 000100 . 000150 . 000200 . 000260 . 000300 . 000350 . 000400 . 000460 . 000520 .000600 . 000655 . 000725 .000790 .000865 .000950 .001010 .001120 .001205 .001315 .001450 .001580 .001725 .001895 Inch. 0. . 000060 . 000050 . 000050 . 000050 . 000050 . 000050 . 000050 . 000050 . 000060 . 000060 . 000080 . 000056 . 000070 .000065 . 000075 . 000085 .000060 .000110 .000085 . 000110 . 000135 . 000130 .000145 .000170 Inch. 0. Inch. 0. Initial load. Stress applied and then released and microme- ter observations made under lower loads. Tensile strength. 0. .000010 .000010 . 000026 .000015 . 000045 . 000020 .000070 . 000025 . 000120 . OU0050 .000160 . 000040 . 000265 . 000095 . 000410 . 000505 . 000155 . 000095 .002435 .001930 .002490 : 002600 .002710 . 002835 .002955 . 003085 . 003205 .003335 .003465 .003605 . 003745 .003885 . 003785 . 003665 . 003560 .003440 .003305 .003190 .003060 . 002935 .002805 . 002666 .002630 . 000056 .000110 .000110 .000125 . 000120 . 000130 .000120 . 000130 .000130 . 000140 . 000140 . 000140 — . 000100 —.000110 — . 000105 —.000120 — . 000135 —.000116 — . 000130 — . 006125 — . 000130 — . 000140 — . 000136 . 102445 .000010 .003610 . 003766 .003890 . 003785 .003665 . 003785 .003890 . 003785 . 003665 .001165 .000145 . 000135 —.000105 — . 000120 .000120 . 000105 —.000106 — . 000120 . 002455 .000010 .00275 Fractured at the neck. Appearance, uniform granular. 12-INCH B. L. EIFLED MOETAES. No. 792. 179 Length, 12". ' Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 10". Applied loads. Comprea- slon per Inch. Successive compres- sion per incn. Permanent set. Snccessive permanent set. Bemarks. Total. Per scmare incn. Founds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11,000 12, 000 13, 000 14,000 15, 000 16, 000 17,-000 18, 000 19,000 20,000 21, 000 22, 000 23, 000 24,000 2X 000 26,000 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33,000 34,000 35,000 36, 000 37, 000 38,000 39,000 40,000 54,600 Pounds. 1,000 2,000 3,000 4,000 S,000 6,000 7,000 8,000 9,000 10,000 11,000 12, 000 13, 000 14, 000 16, 000 16,000 17, 000 18, 000 19, 000 20,000 21, 000 22,000 23, 000 24, 000 25,000 26,000 27,000 28, 000 29,000 30,000 31,000 32, 000 33, 000 34)000 35,, 000 36, 000 37,000 38, 000 39,000 40,000 64,600 Inch. 0. .00006 . 00012 .00017 .00022 .00026 .00031 .00036 .00041 . 00047 .00052 .00058 .00064 .00070 . 00076 .00081 " .60086 .00094 .00100 .00106 .00111 .00119 .00126 .00131 .00139 . 00147 . 00156 .00164 .00172 .00185 .00196 .00210 .00222 . 00240 .00260 .00284 .00300 .00326 .00351 .00389 Inch, 0. . 00006 .00006 . 00005 .00005 . 00004 .00005 . 00005 .00005 . 00006 .00005 . 00006 . 00006 .00006 . 00006 .00005 . 00005 . 00008 . 00006 . 00006 .00005 -. 00008 .00007 .00005 .00008 .00008 . 00009 . 00008 .00008 .00013 .00011 .00014 . 00012 .00018 .00020 .00024 . 00016 .00025 .00026 .00038 Inch. 0. Inch. 0. Initial load* ' intimate strength. 0. .00005 . 00005 .00009 .00004 .00012 .00003 .00020 .00008 .00028 .00008 . 00086 .00058 .66i88 .00102 - Failed by triple flexure. 180 12-INCH B. L. RIFLED M0ETAK8. Ko. 793. Marks/2M0,jE. Length, 10''/°' Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 6". Applied loads. TotaL Pounds. 1,000 2,000 , 3,000 4,000 5,000 6y000 7,000 8,000 9,000 10, 000 11,000 12, 000 13,000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24, 000 25, 000 26,000 27,000 28, 000 29, 000 -30,000 31,000 32, OOO 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 63, 800 Per square inch Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000' 8,000 9,000 10, 000 11, 000 12, COO 13, 000 14, 000 15, 000 16, 000 17,000 18, 000 , 19,000 20, 000 21, 000 22, 000 23, 000 24, poo 26, COO 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 34,000 , 35,000 36, 000 37, 000 38, 000 39, 000 40, 000 «3, 800 Coraproa- sion per inch. Inch. 0. . 000C4 . 00008 .00014 ,00018 . 00023 . 00026 . 00030 . 00034 . 00040 . 00048 . 00054 . 00058 . 00064 . 00070 . 00074 . 00078 .00082 . 00086 . C0094 . 00100 . 00106 . 00112 .00120 . 0C126 .00132 . 00138 . 00146 .00154 . 00166 . 00174 .00182 .00196 . 00212 , 00234 . 00256 . 00276 . 00302 .00336 .00370 Succesaive compres- sion per iDcn. Inch. 0. . 00004 . 00004 . 00000 . 00004 . 00004 . OU004 . C0004 . 00004 . 00006 . 00008 . 00006 . 00004 . 00006 .00006 . 00004 . 00004 .00004 . 00004 . 00008 . 00006 .00006 . 00006 .00008 , 00006 . 00006 . 00006 . 00008 .00008 .00012 . 00008 .00008 . 00014 .00016 . 00022 . 00022 . C0020 . 00026 .00034 . 00034 Permanent set. Inch. 0. . 00012 .00024 Successive permanent Bet. Inch, 0. . 00004 . 00012 . 00042 . 00108 Bemarks. Initial load. Ultimate strength. Failed by triple flexure. TENACITY SPECIMENS. Tensile strength. No. of test. Nnmljera. Diameter. Sectional area. Appearance of fracture. Total. Per square inch. Inchet. Sq. inch. Pounds. Pounds. 12MC,TE2 3063 BT3I 1.129 1.00 28,220 28,220 TJniform granular. 3064 BT4O . 1.129 1.00 30, 730 30, 730 Do. 3065 BTjM 12MC, TEa 1.129 1.00 29, 010 29, 010 Do. 3066 BTsI 1.129 1.00 31, 840 31, 840 Do. 3067 BT4O 1.129 1.00 3J,610 81, 610 Do. 3068 BTjM 1.129 1.00 33, 430 33, 430 Do. 30C9 BL5I 1.129 1.00 34, 480 34, 480 Do. 3070 BL,0 1.129 1.00 31,170 31, 170 Do. - 3071 BLsM 1.129 1.00 33, 390 33,390 Do. 12-inch b. l. bifled mortars. Oast-Ieon Body, No. 2. Ko. 3812. 181 Diameter, 1".122. Sectional area, .99 square inch. Length of stem, 24".10. Ganged length, 20". Applied loads. Blongatlon per incb. SnccessiTe elongation per inoh. Pennauont set. Successive permanent. set. Bemarks. Total. Per square inoh. Pownd». 990 1,980 2,970 3,960 4,950 5,940 6,930 7,920 8,910 9,900 10, 890 11, 880 12,870 13,860 14, 850 15, 840 16, 830 17, 820 18, 810 19, 800 20,790 21,780 22, 770 23,760 24,750 80,840 Pmmda. 1,000 2,000 3,000 4,000 6,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16,000 17,000 18,000 19,000 20, 000 21, 000 22, 000 23, 000 24,000 25,000 31, 150 Inch. 0. .000060 .000110 . 000160 .000210 .000260 .000320 . . 000385 ' .000440 .000495 .000555 .000610 .000675 .000745 . 000810 .000875 .000940 . 001010 .001095 .001180 .001245 .001360 . 001440 .001555 .001670 . Inch. 0. .000068 .000050 . 000U5O . 000050 .000050 . 000060 - . 000065 .000055 . 00005S .000060 . 000055 , 000065 . 000070 . 000095 .000065 . 000066 .000070 .000085 .000085 . 000065 .000105 . 000090 . OOOllS .000115 Inch. 0. Inch. 0. Initial load. Tensile strength. .000010 .000010 . 000035 . 000025 - '. 000045 .000010 . 000050 . 000005 .000060 .000010 .000095 .000035 .000115 .000020 . 000160 .000045 . 000215 .000265 . 000055 .000050 Fractured 1" from neck. Appearance, uniform granular. 182 12-INCH B. L. RIFLED MORTABS. K"o. 3813. .Marks/'' ^^^^^ Diameter, 1".129. Sectional area, 1 square inch. Length of stem, 24".06. Gauged length, 20". Applied loads. Elonsatlon per inch. Successive elongation per inch. Permanent set. SuccessiTO permanent. set. Bemarks. Total. Per Bqnare incli. Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11,000 12,000 13, 000 14,000 ' 15,000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24, 000 25, OOO 30, 020 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15,000 16,000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23,000 24,000 25, 000 30, 020 Inch. 0. .000060 . 000105 . 000165 . 000205 . 000255 .000315 . 000375 . 000435 . 000490 .000545 ■ . 000605 . 000660 .000735 . 000790 .000860 . 000930 . 001000 .001075 .001150 ,001240 .001340 .001430 .001540 . 001660 Inch. 0. . 000060 . 000045 . 000050 . 000050 . 000050 . 000060 . 000060 . 000060 . 000055 . 000055 . 000060 . 000055 000075 .000055 . 000070 . 000070 .000070 . 000075 . 000075 . 000090 .000100 , 000090 .000110 . 000120 Inch. 0. Inch. 0. Initial load. Tensile strength. . 000005 . 000005 . 000030 . 000025 .000040 .ooOoio . 000050 . 000010 . 000065 . O0CO15 .000085 . 000020 .000110 .000025 . U00155 .000045 . 000215 . 000260 . 000060 . 000045 Fractured 1" from neck. Appearance, uniform granular. Specific gravity, 7.2480. Hardness, 18.38. TENACITY SPECIMENS. No. of Test Marks. Diameter. Sectional area. Tensile strength. Speoiflo gravity. Hardness. Total. Per square inch. 3053 3054 3065 3056 3057 3058 3059 , 3060 3061 I2MB2TB2 BTjI BT4O BTjM Btj BL, BLs 12 M K, T E, MTal MT4O MT5M Inches. 1.129 1.129 1.129 1.129 1.129 1.129 1.129 1.129 1.129 8q. inches. 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Pounds. 31,670 32, 580 32, 350 33,240 31,980 ' 81,340 32, 710 81,690 82,480 Pounds. 31,670 32, 580 32, 350 33,240 31,980 31, 340 82, 710 31, 690 32, 480 7.2465 7.2435 7.2441 17.26 16.90 17.44 7.2465 7. 2370 7.2428 19.81 18.19 18.78 Appearance of fractures, uniform granular. 12-INCH B. h. EIFIiED M0ETAE8. No. 3810. 183 Marks, "*5jV^ Diameter, 1".129. Sectional area, 1 square inoh. Length of stem, 24".56. Gauged length, 20". Applied loads. Elongation per inch. Sncoessiye elongation per inch. Permanent set. Successive permanent set. Eemarks. Total. Per square incn. Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19,000 " 20, 000 21i 000 22, 000 33, 000 24,000 25,000 29,010 Pov/nds. 1,000 2,000 3,000 4,000 5,000 6,000 7, 000 8,000 9,000 , 10, 000 11,000 12,000 13, 000 14,000 15, 000 16, 000 17, 000 18, 000 • 19, 000 20, 000 21,000 22,000 23,000 24,000 25, 000 ^,010 Inch. 0. .000060 .000120 .000175 . 000230 .000285 .000340 . 000390 . 000455 .000515 . 000575 .000645 . 000705 . 000780 . 000845 . 000930 . 001005 . 001095 .001175 .001285 . 001390 . 001605 . 001650 . 001785 .002000 Iiuh. 0. . 000060 . 000060 .000055 .000055 .000053 . 000055 .000050 . 000065 .000060 . 000060 . 000070 .000060 . 000075 .000065 . 000085 . 000076 . 000090 . 000080 .000110 .000105 . 000115 . 000145 . 000135 .000215 Inch. 0. Ineh. 0. Initial load. Tensile strength. . OOOOIO . 000010 . 000040 .000030 . 000050 . 000010 . 000075 .000025 .000100 . 000025 .000135 . 000035 . 000190 . 000055 . 000270 . 000080 . 000405 .000135 Fractured 6" from neck. Appearance, uniform granular. 184 12-INCH B. L. RIFLED MOETAES. STo. 3811. Diameter, 1".129. Sectional area, 1 square inch. Length of stem, 24".43. Gauged length, 20". Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. Snccessive permanent set. "Rexaavks, TotaL Per square inch. Foimdi. 1,000 2,000 8,000 4, 000 6,000 6,000 7,000 8,000 9,000 10,000 11, 000 12,000 13,000 14, 000 15, 000 16, 000 17,000 18, 000 19,000 20,000 21, 000 22,000 23, 000 24,000 25, 000 29,210 P(mni8. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, OCO 11,000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22,000 23, 000 24. 000 25,000 29, 210 Inch. 0. . 000060 . 000110 .000160 . 000210 .000365 .000325 . 000390 .000450 . 000505 .000565 .000635 .000700 . 000765 . 000835 . 000910 . 000990 .001065 .001155 .001260 .001360 .001490 . 001595 . 001750 .001910 Inch. 0. . 000060 . 000050 . 000050 . 000050 .000055 . 000060 . 000065 . 000060 .000055 .000060 - .000070 . 000065 .000065 . 000070 . 000075 . 000080 . 000075 . 000090 .000105 . 000100 .000130 . 000105 .000155 .000160 Inch. 0. I Inch. 0. Initial load. 1 Tensile strength. 0. . 000020 . 000020 ; 000045 .000025 . .000055 .000010 . 000085 .000030 . 000115 .000030 . .000165 .000050 .000245 . oooosb . 000360 . 000440 . 000115 .000080 Fractured 5J" from neck. Appearance, uniform granular. 12-INCH B. L. RIFLED MOETARa. 185 m. 779. Marks, 12 ^bV^ Length, 12". Diameter. 1",129. Sectional area, 1 square inch. Gauged length, 10". Applied loads. Compreg- Bion per inon. Snooessive compres- sion per incn. Permanent set. Successive permanent set. Remarks. Total. Per gqnare incn. Poundt. 1,000 2,000 3,000 4,000 6,000 " 6, 000 7,000 8,000 9,000 10, 000 11, 000 12,000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21,000 22, 000 23, 000 24, 000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31,000 32, 000 33, 000 34,000 35, 000 36,000 37,000 38, 000 89,000 40,000 56,500 Pownds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8, 000 9,000 10,000 11, OOO / 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24,000 25, 000 26,000 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33,000 34, 000 35, 000 86,000 37,000 38,000 39,000 40,000 66,500 IneJt. 0. .00006 .00011 .00016 .00020 .00025 • . 00030 .00037 . 00042 . 00047 .00052 .00058 . 00064 . 00071 .00077 .00081 . 00087 .00093 • .00100 . 00107 .00112 . 00118 .00127 . 00133 .00M9 .00147 .00152 .00161 .00170 .00178 . 00188 . 00198 . 00209 .00220 .00230 .00246 .00261 . 00280 . 00300 .00320 Inch. 0. .00006 . 00006 .00005 . O00O4 . 00005 . 00005 . 00007 .00005 . 00005 .00005 . 00006 .00006 . 00007 .00006 . 00004 . 00008 . 00006 . 00007 . 00007 .00005 .00006 . 00009 . 00006 . 00006 . 00008 . 00005 . O0009 ..ooooa . 00008 .00010 .00010 . 00011 .00011 . 00010 .00016 .0001 5 .00019 .00020 .00020 Inch. 0. Inch. 0. Initialload. Ultimate stiength. 0. .00002 .00002 . 00007 . 00005 .00010 .00003 .00017 .00007 , .00028 .00011 .00054 .00026 . 00116 .00062 Failed by triple flexure. 186 12-INCH B. L. RIFLED MORTAES. No. 780. Length, l6".70. Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 5", Applied loads. Total. Per sgnare inch. Compres- sion per iQch. Successive compres- sion per - inch. Permanent set. SncceseiTe permanent set. Kemaiks. Ponndf. 1,000 2,000 3,000 4,d00 6,000 6,000 7, 000 8,000 9,000 10, 000 11, 000 12,000 13,000 14, 000 15,000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 2i, 000 25, 000 26, 000 27, 000 28,000 29, 000 30, 000 31, 000 32, 000 33, 000 34, 000 35, 000 36, 000 37, 000 38, OOO 39, 000 40, 000 62. 150 Potmdt. 1, 000 • 2, 000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24,000 25, 000 26, 000 27, 000 28,000 29, 000 30, 000 31, 000 32, 000 33, 000 34, 000 35, 000 36,000 37, 000 38, 000 39, 000 40, 000 62, 160 Inch. 0. . 00006 . 00010 . 00014 . 00018 .00024 . 00030 .00036 . 00040 .00046 .00048 ,00050 . 00052 .00056 . 00062 .00070 . 00074 . 00080 .00086 .00092 . 00100 . 00106 . 00110 .00116 .00124 . 00136 .00140 . 00146 .00154 . 00164 . 00176 . 00188 .00198 . 00208 .00224 .00244 . 00258 . 00278 .00304 .00328 Inch. 0. . 00006 . 00004 . 00004 . 00004 . 00006 . 00006 . 00006 . 00004 .00006 . O0UO2 . 00002 . 00002 .00004 . 00006 . 00008 . 00004 . 00006 . 00006 . 00006 . 00008 .00006 . 00004 . 00006 . 00008 .00012 . 00004 . 00006 . 00008 .00010 . 00012 .00012 . 00010 .UOOIO . 00016 . 00020 .00014 .00020 . 00026 .00024 Irich. 0. Inch. 0. Initial load. . 00002 . 00002 . 00004 .00004 .00032 .00136 .00078 Ultimate strengib. Failed by triple flexure. 12-inch b. i.. rifled m0ktar8. Oast Iuon Body, No. 3. No. 3826. 187 Marks, '""mY^' Length of stein, 23|". Diameter, r'.129. Sectional area, 1 square inch. Gauged length, 20". Applied loads. Snooessive elongation per inch. Permanent set. Snccessive permanent set. EemariB. Total. Per sqnare laoh. per inch. Fovmdt. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000 11, OOO 12, 000 13, 000 14,000 15, 000 16, 000 17,000 18, 000- 19,000 20,000 21, 000 22, 000 23, 000 24,000 25, 000 29,140 Poundi. 1,000 - 2,000 3,000 4,000 S,000 6,000 7,000 8,000 9,000 10,000 11,000 12,000 13,000 14, 000 15,000 16,000 17, 000 18, 000 19, 000 , 20, 000 21, 000 22, 000 23, 000 24, 000 25, 000 29, 140 iTich. 0. .000060 . 000100 .000150 . 000200 . 000255 . 000306 .000360 .000420 ■ -.000485 . 000535 . 000595 . 000660 . 000735 . 000790 .000860 .000935 . 001005 .001090 . 001180 .001270 . 001355 . 001490 . 001600 .001750 Inch. 0. .000060 . 000050 .000050 . 000060 .000055 .000050 . 000065 .000060 . 600065 .000060 . 000060 .000065 .000075 . 000055 .080070 .000075 .000070 . 000085 .000000 .000090 . 000085 . 000135 . 000110 .000160 Inch. 0. Inch. 0. Initial load. Tensile strength. . 000005 . 000005 .000010 .000010 . 000030 . 000020 .000040 .000010 .000060 .000020 .000096 . 000085 .000135 .000040 .000190 . 000055 . 000285 .000355 . 000095 .000070 Fractured 11" from neck. Appearance, uniform granular. 188 12-INCH B. L. RIFLED MORTARS. Iffo. 3827. ■ Length of stem, 23f". Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 20". Applied loads. Elongation per Inch. SnocessiTo elongation per inch. Permanent aet. Snccessive permanent set. Bemaiks. Total. Per square inch. Pounds. 1,000 2,000 3,000 4,000 6, 000 6,000 7,000 8,000 9,000 10, 000 11, oao 12, 000 13, 000 14, 000 15, 000 16,000 17, 000 18, 000 19, 000 20, 000 21,000 22, 000 23, 000 24,000 25, 000 80, 520 Founds. 1,000 . 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14,000 16, 000 16, 000 17, 000 18, 000 19, 000 20, 000- 21, 000 22, 000 23,000 24,000 25, 000 80, 520 Inch. 0. .000046 .000095 .000145 . 000195 .000260 , 000300 .000355 .000410 .000470 .00062B' . 000690 .000645 . 000705 .000780 .000845 . 000910 . 000990 .001065 . 001145 .001240 . 001335 .001435 .001540 . 001685 Inch. 0. .000045 .000050 , .000060 . 000050 . 000055 . 000050 . 000055 . 000055 . 000060 . 000055 . 000065 . 000055 . 000060 .000075 .000065 . 000065 .000080 . 000076 . 000080 .000095 . 000095 . 000100 . 000105 .000145 Inch. 0. Inch. 0. Initial loaa. Tensile strength. 0. .000015 .000015 . 000025 . 000010 . 000040 .p00015 .000060 . 000020 .000090 .000030 . 000115 .000026 . 000165 .000060 . 000245 .000310 . 000080 .000065 ' Fractured 2" from neck. Appearance, uniform granular. Specific gravity, 7.2586. Hardness, 17.71. 12-INCH B. L. RIFLED MOETAES. 189 Ko. 3828. Vfarts, i2M^»tT^' Dength of Stem, 24^' Diameter, 1".129 Sectional area, 1 square inch. Applied loads. EloBgation per inch. Sncc'esslve elongation per inch. Permanent eet. Successive permanent set. Bemarks. Total. Pbr aquare inch. Pounds. 1,000 2,000 Pounds. ■ 1,000 2, 000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000 11,000 12,000 13, 000 14, 000 15,000 16, 000 17,000 18, 000 19,000 20, 000 21, 000 22, OOQ 23,000 24,000 25, 000 28, 820 Inch. 0. .000050 .000100 .000150 .000205 .000255 .000315 . 000365 .000425, .000490 .000545 . 000605 .000660 .000735 .000790 . .000860 . 000925 .001005 . 001100 .001185 . 001280 . 001390 . 001510 .001645 .001815 Inch. 0. .000050 . 000050 . 000050 . 000065 . 000050 .000060 . 000050 . 000060 .000065 .000055 .000060 .000055 ,000075 . 000055 .000070 .000065 .000080" .,000095 .000085 . 000096 .000110 .000120 .000135 .000170 Inch. 0. Inch. 0. Initial load. Tensile strength. 3,000 4,000 5,000 0. 6,000 , 7,000 8,000 9,000 10,000 11, 000 .000035 .000035 12,000 13, 000 . 000040 .J)00005 14,000 15, 000 . 000060 .000010 16, 000 17, 000 . 000060 .000010 18, 000 19, 000 .000090 .000030 20, 000 21, 000 .000135 . .000045 22, 000 23, 000 .000200 . 000065 24, 000 25, 000 28, 820 .000310 .000400 .000110 .000090 fractured 8" from neck. Appearance, uniform granular. 190 12-INCH B. L. RIFLED MORTAKS. Marks, 12 ^b\i^^^ Length of stem, 24iV'. Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 20". No. 3829. Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. Successive permanent set. 'Remarks. Total. For square inch. Pounds. 1,000 2,000 3,000 • 4,000 6,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12,000 13, 000 14, 000 16, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 32, 000 23, 600 24,000 25, 600 30, 570 Pounds. 1,000 2,000 3, 000 4,000 5,000 6,000 7,000 8,000 9,000 10,000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 IS, 000 19,000 20, 000 21, 000 22, 000 23, 000 24,000 25,000 30,570 Inch. 0. . 000050 . 000100 . 000100 . 000200 .000255 . 000310 . 000370 . 000430 . 0004S5 .000545 . 000605 .000675 . 000740 . 000800 .000860 .000910 . 000960 .001050 . 001150 .001255 .001365 .001500 . 001645 .001835 Inch. 0. .000050 . 000050 . 000050 .000050 . 000055 .000065 . 000060 . 000060 . 000055 . 000060 . 000060 . 000070 . 000065 . 000060 . 000060 .000050 . 000050 . 000090 . 000100 .000105 .000110 .000136 .000145 .000190 ' Inch. 0. Inch. 0. Initial load. Tensile strength. 0. .000015 . 000016 . 000036 . 000020 .000045 .000010 . 000045 0. .000045 0. . 000085 . 000040 . 000165 . 000070 . 000286 .000390 .000130 . 000106 Fractured at middle of stem. Appearance, uniform granular. 12-INCH B. L. EIFLED MOETAES. 191 No. 781. Marks, 12 'yi.^^ Leugth, 12". * Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 10". Applied loads. CompreB- sionpei inch. Successive compres- sion per inch. Permanent set. Successive permanent set. Bemarks. Total. Per sqnaie incli. Powndg. 1,000 2,000 3,000 4,000 6,000 6,000 7,000 8,000 9,000 10, 000 11. 000 12, 000 13,000 14,000 16,000 16, 000 17, 000 18,000 19, 000 20, 000 21,000 22, 000 23,000 24,000 26, 000 26, 000 27, 000 28,000 29, 000 30, 000 31, 000 32, 000 33, 000 34, 000 36,000 36, 000 37, 000 38, 000 39, 000 40,000 54, 890 Pounds. 1,000 2,000 3,000 4, 000 5,000 6,000 7,000 6,000 9,000 10,000 11,000 12,000 13, 000 14,000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24,000 26, 000 26, 000 27,000 28, 000 29,000 30, 000 31, 000 32,000 33, 000 . 34,000 35,000 36,000 37, 000 38,000 39, 000 40,000 64,890 Inch. 0. .00005 .00010 .00015 . 00020 .00026 . 00030 .00036 .00041 . 00047 .00051 .00057 . 00063 .00069 . 00076 - .00081 . 00088 . 00094 . 00100 .00106 .00112 .00118 . 00126 .00131 . 00138 .00146 . 00152 . 00160 . 00167 ,-00177 . 00188 .00198 .00208 .00218 . 00231 .00260 . 00266 .00286 .00308 .00342 Inch. 0. .00006 . 00005 .00005 . 00006 .00005 . 00005 .00006 .00006 . 00006 . 00004 .00006 . 00006 .00006 .00007 . 00006 . 00007 .00006 . 00006 .00006 . 00006 .00006 . 00007 .00006 .00007 .00008 . 00006 .00008 . 00007 . 00010 . 00011 .00010 .00010 .00010 . 00013 .00019 . 00016 .00020 .00022 .00034 Inch. 0. Inch. 0. Initial load. ( Bested nndei load 1 I honi. mtlmate strengtii. 0. . 00003 .00003 . 00007 .00004 .00012 .00005 .00018 .00006 .00031 .00013 .00061 .00030 .00141 .00080 Failed by triple flexure. 192 12-INCH B. L. EIPLED MORTARS. Marks, i2M^TB, Length, 1%''° Diameter, 1".129. Sectional area, 1 square incli. Gauged length, 5". No. 782. .:/ Applied loads. Total. Per square incii. Comprea- sion per incn. Sncoessive compres- Biou per inch. Permanent set. Saccessive permanent Bet. Bemarks. Powu2>. 1,000 2,000 3,000 ^ 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11,000 12, 000 13,-000 U, 000 15, OOO 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24,000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31,000 32, 000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39, OOU 40, 000 60, 180 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21,000 22, 000 23, 000 24, 000 26,000 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 34, 000 36, 000 36, 000 37, 000 38, 000 39, 000 40, 000 60, 180 Inch. 0. . 00006 . 00010 . 00016 . 00020 , 00024 . 00028 . 00034 . 00040 .00044 .00050 . 00054 . 00060 . 00066 .00070 .00074 . 00080 . 00082 . 00088 . 00094 . 00098 .00102 .00106 . 00110 .00118 .00126 .00184 .00144 . 00152 . 00160 . 00170 . 00176 . 00190 . 00300 . 00214 . 00232 .00242 . 00256 . 00276 . 00308 Indh. 0. . 00O06 . 00004 . 00006 .00004 . 00004 . 00004 ,00006 . 00006 . 00004 .00006 . 00004 . 00006 . 00006 . 00004 . O0004 . 00006 . 00002 . 00006 . 00006 . 00004 . 00004 . 00004 . 00004 . 00008 . 00008 . 00008 . 00010 .00008 . 00008 .00010 . 00006 .00014 . 00010 . 00014 .00018 . 00010 . 00014 .00020 .00032 Inch. 0. Inch. 0. Initial load. . 00004 . 00004 . 00006 . 00002 . 00010 . 00004 .00012 .00002 .00024 . 00012 .00026 . 00062 Ultimate strength. Failed by triple flexure. 12-inch b. l. rifled mortars. Cast-Iron Body, No. 4. No. 3830. 193 Marts, "^^^^^ Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 20". Applied loads. Total. f^'j.X"' Elongation per incli. Successive elongatioli per incli. ^Permanent set. Sncoessjve permanent set. Bemai^a. Poimdi. 1,000 2,000 3, 000 i, 000 5,000 6,000 7,000 8,000 9,000 10,000 11,000 12, 000 13, 000 H,00O 15. 000 16,000 17, 000 18,000 19,000 20,000 21, 000 22, 000 23, OOff ^,000 25, 000 32, 610 Founds. 1,000 2, 000 • 3,000 4,000 6,000 6,000 7,000 ' 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 as, 000 ■ 19,000 ' 20, 000 21,000 22, OOO 23, 000 24,000 25, 000 32, 610 Inch. 0. .000050 .000100- . 000150 . 000200 . 000260 ,000310 . 000365 .000430 .000490 . 000545 . 000605 . 000670 . 000735 . 000805 . 000870 . 000945 . OOlOlO . 01)1090 .001170 . 001255 . 001345 . 001440 . 001545 ,.001650 Inch. 0. .000050 .000050 . 000050 . O0Q05O . OOOOiO . 000060 .000055 .000065 .OOB060 .000055 .000060 . 000065 ' . 000065 . 000070 . 000065 .000075 . 000065 . 000080 . OOOOSO . 000085 .W0090 . 000096 .000105 -. 000105 Inch. .000210 . 000250 Inch. 0. 0. 0. .000015 . 000015 .000025 ^ .000010 .000045 .000020 .000060 .000015 .000080 . 000020 ■ogoiio .000030 . 000145 .000035 Initial load. . 000065 . 000040 Tensile strength. Fractured 3" from neck. ' Appearance, uniform granular. H. Ex. 165 ^13 194 12-INCH B. L. EIFLEt) MOETAKS. No. 3831. Marks,^2MB^TB. Diameter, l'U29. Sectional area, 1 square inch. Gauged length, 20". Applied loads. Blon cation per inch. Snooeasive eloDg££tiou per inch. Permanent set. Snooessive permanent set. Bemorka. Total. Per square inch. Pounds. 1,000 2,000 3,000 ' 4,000 5,000 6, 000 7,000 8,000 , 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 18, 000 -17, 000 18, 000 19, 000 20, 000 21, 000 22,000 23, 000 24, 000 25, OOO 32, 690 ■ Pounds. 1,000 2, 000 . 3,000 4,000 5,000 8,000 9,000 10, 000 11, 000 . 12,000 13, 000 14, 000 15, OOO 16, 000 17, 000 18,000 19,000 20, 000 21, 000 22, 000 23, 000 24, OCO 25, 000 32,590 Inch. 0. .000045 . 000100 . 000155 .000210 . 000255 . 000310 .000380 .000430 .000495 .000545 .000610 .000670 . 000745 .000805 . 000885 . 000955 .001020 . 001095 . 001170 .001250 ,001340 .001430 .001525 . 001655 Inch. 0. . 000045 • .000055 . 000055 .000055 .000045 . 000055 . 000070 . 000050 .000065 . 000050 . 000065 . 000060 ' .000075 .000060 ~ .000080 . 000070 . 000065' . 000075 .000075 .000080 .000090 . 000090 .000095 . 000130 Inch. 0. Inch. 0. Initial load. . 000005 . 000005 . 000020 , .000015- . 000040 .000020 .000050 . OOOOIO .000065 .000015 .000090 . 000025 . 000115 .000025 .000150 . 000035 . .000200 .000250 .006650 .000050 Fractured 2 J" from neck. Appearaace, uniform granular. 12-INCH B. L. RIFLED MORTARS. No, 3832. 195 Diameter, 1".129. , Sectional area, 1 square inch. Guaged length, 20". Applied loads. Elon^atioii ■pec inch. Suocessive elongation per Inoh. Permanent set. SuocessiTe permanent set. Kemarks. Total. Per square inch. Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000 11,000 12, 000 13,000 14, 000 16, 000 13, OOO 17, 000 18,000 19, 000 20, 000 21, 000 22, OOO 23, 000 24,000 26, 000 27, 880 Pounds. 1,000 : 2, 000 • 8,000 4,000 5,000 6,000 7,00i) 8,000 9,000 10, 000 11, 000 12, 000 13,000 14,000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 - 22,000 23, 000 24, 000 25, 000 , 27,880 Inch. .000050 ' . OOUIOO .000165 .000210 .000270 . 000335 .000395 .000450 .000510 .000680 .000655 .000715 .000800 .000875 .000950 .001060 . 001140 .001245^ .00135^ . 00U83 .001635 . 001795 .001995 . 002243 Inch. 0. . .000050 . 000060 .000065 . 000055 .000060 . 000063 .000060 .000055 .000060 . 000070 .000075 • .000060 .000085 .000075 . 000075 .000110 .000080 .000105 .000110 .000130 .000150 . 000160 . 000200 .000250 Inch. 0. .- Inch. Initial load. Tensile strength. .000005 .000005 . ooooib .'ooooS .000050 . 000010 .000075 . 000025 . 000105- .000030 .000150 .000045 .000215 .000065 .000340 . .000125 . 000515 .000690 . 000175 - .000175 ' Fractured 4" from neck. Appearance, granular, dark jnottled. .196 12 INCH B. L. RIFLED MOETABiS. Fo. 3833. 12 M El T Bj Marks, Diameter, l".i29. Sectional area, 1 square inch. Gauged length, 20". Applied loads. ElongatTon per mqh. Snocessive elongation per inch. Permanent set Suoceasive permVent set. Bemarks. TotaL Per square inch. Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 ,7,000 8,000 9,000 10, 000 11,000 12,000 13, 000 14, 000 -15, 000 16, 000 17, 000 18, 000 19, 000 20,000 21, 000 22, 000 23, 000 24,000 25, 000 28,080 Pounds. 1,000 , 2,000 3,000 4,000 5,060 . 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 34,000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23,000 ' 24, 000 26, 000 28, 080 Inch. 0. . 000055 . 000110 . 000175 . 000325 . 000280 .000340 . 000400 .000455 . 000525 • .000685 . 000640 .000720 . 000800 . 000875 . 000955 .001060 . 001145 . 001240 .001355 .001486 . 001630 . 001795 . 001960 . 002230 Inch. 0. .000055 . 000055 . 000065 .000050 - .000055 . 000060 . 000060 . 000055 .000070 . 000060 . 000055 . 000080 . 000080 . 000075 . ooouao .000105 . 000085 . 000095 .000105 .000130 . 000145 .000165 . 000165 . 000270 Inch. 0. Inch. 0. Initial load. Tensile strensth. . 000005 .000005 .000035 .000030 .000050 .000015 . 600670 . 000020 . 000095 . 000025 .0001.50 . 000055 . 000210 . oiom . 000335 .000125 . 000505 .000670 .000170 .000165 Fractured 4".6(t from neck. Appearance, granular, in part dark mottled. 12-INCH B. L. RIFLED MOKTABS. 197 iJTo, 783. Marks, 12 MK^TE, Length, 12". ' Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 10". Applied loads. TotaL Per square inou. Compres- sion per inch. Successive compres- sion per inch. Permanent set. SnccessiTe permanent set. Kemarks. Towndt, 1,000 2,000 . 3,000 - 4,000 ' 5, 000 e,ooo 7,000 8,000 9,000 10, coo 11, 000 12, 000 13, 000 14, OOO 15, 000 16, 000 17, 000 18,000 19, 000 20, 000 21, 000 22, 000 23, 000 24,000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 34,000 36, 000 36, 000 37, 000 38, 000 39, 000 40, 000 53, 120 Poxmda. 1,000 ■ 2, 000 3, 000 4,000 6,000 6,000 7, 000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 - 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 ■ 23, 000 24,000 26, 000 26, 000 27, 000 28,000 29, 000 30, 000 31, 000 32, 000 33, 000 34,000 35,000 36, 000 37, 000 38, 000 39, 000 40, 000 53, 120 Inch, 0. . 00005 .00009 . 00014 . 00021 . 00027 .00032 . O0O38 .00043 .00049 .00056 . 00062 . 00068 . 00073 .00080 .00086 . 00092 . 00099 . 00105 .00111 .00119 . 00126 . 00132 . 00139 . 00147 .00163 .00162 .00171 . 00179 .00192 . 00202 . 00212 .00222 . 00239 . 00257 .00280 .00295 .00318 .0034f .00380 Inch. 0. .00005 . 00004 . 00005 . 00007 . 00006 . 000O5 .00006 .00005 .00006 . 00007 . 00006 . 00006 . 00005 . 00007 . 00006 . 00006 . O0007 . 00006 . 00006 . 00008 . 00007 . 00006 . 00007 . 00008 . 00006 .00009 .00009 . 00008 . 00013 ".00010 . 00010 . 00010 . 00017 .00018 . 00023 . 00015 . 00023 . 00020 .00033 Inch. 0. Inch, Initial load. . 00003 . 00008 . 00006 .00013 .00005 . 00021 . 00038 . 00017 .00077 .00039 .00169 . 00002 intimate strength. Failed by triple flexure. 198 12-INCH B. L. EIFLED MOETAES, No. 784. 12ME4TEa Marks, • ^^, Length, lOf"'.'' Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 5". Applied loads. Total. P-i„X'« Founds. 1,000 2,000 3,000 4,000 5,000 6,000 7, 000 . 8,000 9,000 10, 000 11, 000 12, 000 13, 000 U, 000 16, 000 16, 000 . 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24,000 25, 000 26, 000 27, 000 28, 000 ' 29, 000 30, 000 31, 000 32, 000 33, 000 34,000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 58, 600 Pounds. 1,000 2,000 3, 000 4,000 5,000 6,000 7,000 8, 000 9,000 10, 000 11, 000 12, 000 13, 000 ^ 14, boo 15, 000 16, 000 . 17, 000 18, 000 19, OOU 20, 000 21, 000 22, 000 23, 000 24, 000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 32, OOO 33, 000 34, 000 35, 000 , 36, 000 37, 000 38, 000 39, 000 lO, 000 68, 600 Compres- sion per inch. Inch. , 0. . 00006 . 00010 . 00014 . 00020 . 00024 . 00030 . 00036 . 00042 ■ . 00048 .00062 . 00056 . 00064 . 00070 .00076 . 00080 . 00088 . 00094 .00100 . 00104 . 00110 .00116 . 00124 . 00134 .00140 . 00150 . 00160 , 00168 .00176 . 00190 . 00200 . 00210 .00226 .00238 .00256 . 00278 .00294 .06320 .00848 .00386 Successive compres- sion per inoli. Inch. 0. . 00006 . 00004 . 00004 . 00006 . 00004 . 00006 . 00006 . 00006 . 00006 . 00004 . 00004 . 00008 . 00006 . OOU06 . 00004 . 00008 . 00006 . 00006 . 00004 .00006 . 00006 .00008 .00010 . 00006 .00010 . 00010 . 00008 . 00008 . 00014 . 00010 . 00010 .00016 .00012 . 00018 . 00022 . 00016 . 00026 . 00028 .00038 Permanent set. Inch. -0. .00002 , 00002 . 00004 . 00020 Successive permanent set. Inch. 0. . 00002 . 00034 . 00076 .00172 . 00042 .00096 Bemarks. Initial load. tntimate strengtii. Failed by triple flexure. 12-inch b. l. eifled moktaks. Oast-Ikon Body, Ko. 5. 199 No. 3834. Marks, "%*,^ Length of stem, 27J". Diameter, 1".128. Sectional area, 1 square inch. Gauged length, 20". Applied loads. SuccessiTe elongation per inch. Permanent sec. Sncceesive permanent set. Bemaiks. lotaL Per equare inch. per inch. Poundt. 1,000 2,000 3,000 4,000 6,000 6,000 7,000 8,000 9,000" 10,000 11, 000 12, 000 .13, 000 14, 000 15, 000 16, 000 17, 000 18,000' 19, 000 20, 000 21, 000 22, 000 23, 000 24,000 25, 000 30,010 Poundt. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12,000 13, 000 ■ 14, 000 15,000 16,O0D 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24,000 25, 000 30, 010 Inch. 0. .000050 . 000100 .000150 .000206 .000260 .000320 .000380 . 000435 .000500 . 000650 .000610 .000680 . 000740 .000800 .000876 .000940 .001010 • .001090 .001170 . 001255 ■ .001350 .001445 .001545 ■ .001665 Inch. 0. .000050 .000060 . 000060 . 000055 . 000065 . 000060 .000060 .000055 .000065 . U00060 .000060 . 000070 . 000060 .000060 . 000075 . 000065 . 000070 .000080 . 000080 - .000085 • .000095 .000095 .000100 . 000120 Inch'. 0. Inch. 0. Initial load. Tensile strength. .000006 .000005 .000035 . 000030 . 000040- .000005 . 000050 .000010 .000085 .000035 . 000100 .000015 ,000140 .000040 .000185 . 000045 . 000245 . 000290 . 000060 . 000045 Fractured ."50 from neck. Appearance, granular, in part dark mottled. 200 12 INCH B. li. KIFLED MOKTAES. ITo. 3835. Marks/'' \Y«' Lengthof stem, 27|". Diameter, 1".128. , Sectional area, 1 square inch, flanged length, 20". '.Applied loads. Elongation per inch. Sncceeaive elongation per incli. Permanent set. Succeaaive permanent eet. Kematks. Total. Per square inch. Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11,000 12, 000 13, 000 14,000 16, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24,000 25, 000 29,420 Pounds. 1,000 2,000 3,000 4,000 - 6,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12,000 13,000 14,000 15, 000 16, 000 17,000 18, 000 19, 000 20,000 21, 000 22, 000 23, 000 24,000 ■26, 000 29,420 Inch. 0. . 000050 .000105 .000155 .000205 .000265 .000315 . 000375 .000430 .000485 .000640 .000600 .000660 .000730 .000796 . 000860 . 000935 . 001010 . 001090 .001165 .001255 .001345 .001445 . 001550 .001675 Inch. 0. .000050 . 000055 . 000050 .000050 ■ .000050 . 000060 . 000060 . 000055 . 000056 . 000056 . . 000060 . 000060 . 000070 .000065 .000065 .000076 . 000075 .000080 .000075 .000090 .000090 . 000100 . 000105 .000125 IncK 0. Inch. 0. Inltialloafl. Tensile strengtli. .000005 .000005 . 000015 . 000010 . 000030 . 000015 . 000045 . 000015 .000070 . 000025 . 000090 . 000020 . 000130 .000040 . 000170 . 000040 .000245 . 000290 - . 000075 .000045 Fractured 10" from neck. Appearance, granular with dark spangles. 12-INCH B. L. KIFLED M0BTAK8. 201 No. 3836. Length of stem, 27|". Diameter, 1".128. Sectional area, 1 square inch. Gauged length, 20". Applied loada. Elongation per mcli. Snooeasive elongation per inoli. Permanent set. Suooeasive permanent set. Kemaiks. Total. Per square incli. Foundt. 1,000 2,000 3,000 4,000 5,000 6,000 7, 000 8,000 9,000 10, 000 '11,000 12, OOO 13, 000 14, 000 15, 000 16, 000 i7,ooa 18, 000 19, 000 '20,000 21, 000 22, 000 23,000 24, 000 25, 000 28,890 Povmds. 1,000 2,000 3,000 4,000 6, 000 6,000 7,000 8,000 9,000 10,000 11, 000 12,000 13, 000 14, 000 IB, 000 - i«,ooo 17, 000 18, 000 " 19, 000 20, 000 21,000 22, 000 23, 000 _ 24,000 25, 000 28,890 Inch. 0. .000050 . 000100 .000160 .000205 .000255 . 000315 .000375 .000435 . 000496 . 000565 .000620 . oope86 .000765 . 000826 . 000890 .000946 .001000 .001076 . 001170 .001270 .001395 . 00154d . 001705 . 001890 Inch. 0. .000060 . 000060 . 000050 . 000056 . 000050 . 000060 .000060 .000060 .000060 , . 000060 .000065 . 000066 .OOQ070 '. 000070 .000066 . 600065 .006066 . 000075 . 000096 ■ . 000100 .000125 .000146 .000166 .000185 Inch. 0. Inch. 0. Initialload. Tensile strengtli. 0. .000015 .000015 .000035 . 000020 .000066 . 000020 . 000070 . 000015 .000090 . 000020 .000115 .000C26 . 000185 .000070 .000340 . 000435 , 000165 .000095 Fractured 11" from neck. Appearance, uniform granular. 202 12-IM'CH B. L. RIFLED MORTAKS. No. 3837. Marks, "V*f®' Length of stem, 27f". Diameter, 1".128. Sectional area, 1 square inch. Gauged length, 20". Applied loads. Elongation per incli. Successive elongation per inch. Permanent set. Sacceasive permanent Bet. Bemarks. Tot^ Per sqnare inoh. Pounds. 1,000 2, OOO 3,000 4,000 6,000 «,000 7,000 8,000 9,000 10,000 11, 000 12, 000 13,000 14,000 15, 000 16, 000 17,000 18, 000 19, 000 20, OOO 21,000 22; 000 23. 000 24, 000 25,000 29, 970 Pounds. 1,000 2,000 3,000 4,000 6,000 6,000 7,000 8, 000 9,000 10,000 . 11, 000 12, 000 13, OOO 14,000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21,000 . 22, 000 23,000 24, 000 * 26, 000 29, 970 Inch. 0. . 000050 . 000105 .000155 . 000210 .000265 . 000330 .000385 . 000450 . 000505 . 000560 .000630 . 000695 . 000755 .000835 . 000905 . 000900 . 001065 .001155 . 001255 .001360 .001495 .001610 .001760 .001946 Inch. 0. . 000050 . 000055 .000050 . 000055 . 000055 . 000065 . 000055 . 000065 . 000055 . 000055 . 000060 . 000065 . 000080 . 000080 . 000070 .000085 . 000076 .000090 .000100 , 000105 . 000135 . 000115 .000160 . 000185 Inch. 0. Inch, 0. Initial load. Tensile atrength. 0. .000025 . 000025 .000045 . 000020 .000055 . 0000 10 .000085 . 000030 .000115 .000030 . 000170 . 000055 , .900260 .000090 .000390 .000495 .000130 .000105 Fractured 10" from neck. Appearance, uniform granular. 12-INCH B. L. KIFLED MORTARS. 203 ^o. 785. Marks, ^2M^B^TE, Length, 12". ' Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 10". Applied load6. Total. Per sqxiaTe inou. Compres- sion per Snooeasive compres- sion per inch. Permanent Sacceasive permanent set. Komarka. Fowidf 1,000 2,000 .3,000 4,000 5,000 6,000 7,000 '8,000 ' 9,000 M, 000 . 11, ooo 12, 000 13, 000 . 14, 000 15, oob 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, OOO 23, 000 21, 000 26, 000 26, 000 27, 000 28, 000 29, 000 30,000 81, 000 32, 000 33, 000 31, 000 35, 000 ■' 36,000 37, 000 38, 000 39, 000 10, 000 61,960 Poimdi. liOOO 2,000 3,000 4,000 6, 000 6,000 7,000 ' 8, 000 9,000 10,0(0 11, 000 ' 12, 000 13,000 14,000 15, 000 16, 000 17, 000 18,000 19, 000 ^20, 000 21, 000 22, 000 23, 000 24, 000 25,000 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 , 31, 000 35, 000 36,000' 37, 000 38, 000 - 39, 000. 40, 000 54, 960 Inch. 0. . 00006 . 00012 . 00017 .00022 .00027 .00082 . 00037 . 0OO12 . 00048 . 00053 . 00060 . 00066 . 00071 . 00077 . 00082 . 00088 . .00095 .00100 .00108 . 00112 .00120 .00127 . 00132 . 00140 . 00118 . 00153 .00162 . 00169 . 00178 .00190 . 00201 . 00213 .00228 .00213 . 00268 . 00272 . 00322 . 00352 Inch. 0. . 00006 . 00006 , 00005 . 00005 . OOOUS . 00005 . 00005 . 00005 . 00006 . 00006 . 00007 . 00006 . 00005 . 00006 . 00006 .00006 .00007 .00005 . 00008 . 00004 . 00008 .00007 , . 00005 . 00008 . 00008 . 00005 . 00009 . 00007 . 00009 .00012 . 00011 ..00011 .00016 . 00015 .00016 .00014 .00020 .00030 . 00030 iTbch. 0. Inch. 0. Initial load. . 00001 . 00001 . 00001 . 00003 . 00001 . 00008 . 00019 . 00008 . 00031 . 00037 .00148 ITltimate etrength. Failed by triple flexure. 204 12-INCH B. L. KIFLED MOETARS. No.. 786. Marks, ^^ViJ^ Length, 10".69. Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 5". Applied loads. Total. Per square inch. Compres- sion per incn. Snocessive compres- sion per : inch. Permanent set. Successive permanent set. He marks. Pounds. 1,000 a, 000 3,000 4,000 5,000 6, 000 7,000 . 8,000 9,000 10, 000 11, 000 12, 000 13,000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24,000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 34, 000 35, 000 36, 000 37, 000 38,000 39, 000 40, 000 61,940 Powida'. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14,000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22,000 23, OOO 24, 000 25, 000 26, 000 27, OOO 28, 000 29, 000 3Q, 000 31, 000 32,000 33, 000 34, 000 35, 000 36, 000 37, 000 38,000 39, 000 40, 000 61, 940 Inch. 0. .00006 . 00010 . 00016 . 00020 . 00024 . 00030 . 00034 . 00040 . 00044 .00050 . 00056 . 00060 . 00066 . 00072 . 00078 .00082 . 00088 . 00094 .00100 . 00106 . 00112 . 00118 .00124 . 00132 .00140 . 00146 .00152 .00160 .00170 .00180 .00190 . 00202 . 00216 .00230^ .00246 .00264 .00280 . 00302 .00336 Inch. 0. . 00006 . 00004 .00006 . 00004 .00004 . O0O06 . 00004 . 00006 .D0004 . 00006 . 00006 . 00004 . 00006 . 00006 . 00006 . 00004 . 00006 . 00006 . 00006 . 00006 . 00006 . 00006 . 00006 . 00008 . 00008 . 00006 . 00006 . 00008 . 00010 . 00010 .00010 . 00012 . 00014 . 00014 .00016 .00018 .00016 .00022 .00034 Inch. 0. Inch. 0. Initial load. . 00002 . 00004 , 00006 . 00002 . 00026 . 00060 . 00034 . 00134 .00074 intimate strengtli. Failed by triple flexure. 12-inch b. l. rifled mortars. Cast-Ieon Body, No. 6. 20 No. 3847. Marks/2MK;TB' Length of stem, 26§". Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 20". Applied loadg. Elongation per inch. SncoeBsiTe elongation per inch. Permanent set. Sncceseive permanent set. Eemaris. Total. Fer square inch. Powiida. 1,000 2,000 3,000 4,000 6,000 6,000 - 7,000 8,000 9,000 10,000 11,000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18„000 19, 000 20,000 21, 000 22, OOO 23, 000 24,000 25, 000 31, 150 , Povndi. 1,000 2,000 3,000 4,000 6,000 6,000 7,000 8,000 9,000 10, 000 11,000 12,000 13,000 14, 000 16, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21,000 22, 000 23, 000 24,000 26,000 31,160 Inch. 0. .000040 .000090 .000140 .000190 .000245 .000300 .000355 .000410 .000460 . 000530 . 000590 .000645 . 600710 .000780 .000840 .000916 .000985 .001060 .00U30 . 001210 .001285 • .001395 .001500 .001590 Inch. 0. . 000040 .000050 -.000050 .000050 .-000059 .000059 .000056 - ,000055 .000050 .000070 .000060 .000055 .000069 .000070 . 000060 .000076 . 000070 .000065 . 000080 .000080 . 000075 .000110 .000106 .000090 In'oh. 0. Inch. 0. Initial load. • Tensile strengtn.^ 0. .000016 .000016 ^ .000036 . 000020 .000046 .000010 . 000060 .000016 .000086 .000025 • .000116 . 000030 . 000140 . .000025 . 000205 .000240 . 000065 . 000039 Fractured i" from neck. 206 12-INCH B. L. EIFLED MOETAES. Marks, ^^^^jl'f^^^ Diameter, l".i29. Sectional area, 1 square inch. Gauged length, 20". Fo. 3883. Applied loads. Elongation per inch. Snccesaive elongation. per inch. Permanent set. Successive permanent set. Bemaikg, Total. Per square inch. 1,000 2,000 8,000 4,000 ,5,000 ^6,000 7,000 8,0IJ0 , 9, 000 10, 000 11,000 12,000 13,000 14,000 ; ,16,000 16, 000 17, 000 18, 000. 19,000 20,000 . 21,000 ' 22, 000 23,000 24,000 . 26, 000 29,810 Powndg. 1,000 2, 000 8,000 4,000 6,000 ' 6,000 7,000 8,000 9,000 10, 000 11, 000 12,000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19,000 20,000 • 2i; 000 22,000 23, 000. 24,000 25,000 29,810 Inch, 0. . 000060 . 000110 . 000150 .000210 . 000260 . 000315 .000365 . 0004^5 .600485 . 000550 .000600 . 000660 .000715 . 000780 . 000850 .000915 . 000990 .001060 . 001135 .061210 .001300 ■.001395 .001495 .001605 Inch. 0. .000060 .000050 . 000040 . OOOOOO , .000060 . 000055 .000060 . 000060 .000060 .000065 .000050 .000060 .000055 . 000065 .000070 .000066 . 000075 .000070 . 000075 . 000075 .000090 .000095 .000100 .000110 Inch. 0. Inch. 0. Initial load. Tensile strength. .000010 .000010 ' " .000025 .000015 .090035 .000010 .000060 -.000025 . 000060 0. . 000075 .000015 .000105 .000030 .000150 .000045 . 000210 .000245 .000060 .000035 Fractured ^" from neck. Appearance, granular j light-colored metal interspersed with dark spots. 12-INCII B. L. EIFLED MOETAES. :So. 3848. 207 Marks, I'' Vt^^ Length of stem, 23". Diameter, 1".129. Sectional area, 1 square incli. Gauged length, 20". Applied loads. Elongation periucb. Sncce88iv6 elongation per inch. Permanent set. SnocesslTO permanent set. Bemarks. Total. Per square incn. Pounds. 1,000 2,000 3,000 4,000 6,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 ,15, 000 16, 000 17, 000 18, 000 19,000 20, OOO 21,-000 22,000 23,000 24,000 25,000 25,850 Pounds. 1,000 2,000 3,000 4,000 6,000' 6,000 7,000 8,000 ■ 9, 000 10,000 11, 000 12, 000 13, 000 14,000 15, 000 16,000 17, 000 18,000 19,000 20, 000 21, 000 22, 000 23, 000 24,000 25, 000 26,680 Inch. 0. . 000050 .000110 .000180 .000210 . 000265 .000325 .000375 .000435 .000500 . 000565 .000620 . 000700 .000760 .000840 .000915 . 000990- .001080 . 001165 .001265 .001330 .001500 ; 001635 .001786 . 001970 Inch. 0. .000050 . 000080 . 000050 . 000050 . 000055 . 000000 . 000060 . 000060 . 000065 .000065 . 000055 . 000080 . 000060 .000080 .000075 .000075 .000090 . 000085 . OOOIOO . 000115 .000120 .000135 .000150 .000185 Inch. 0. Imsh. .0 Initial load. Tensile strengtiL ^ 0. . 000036 .000036 . 000050 .000015 . 000070 . 000020 . 000095 . 000026 . 000135 .000040 . 000190 .000055 .000275 .000085 .000415 .000530 .000140 .000115 Fractured 5".75 from necki Appearance, granular, in part dark mottled. 208 12-INCH B. L. EIFLED MOETAKS. No. 788. Marks, i^ME^TE, Length, 12". 'Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 10". Applied loads. Total. Per square inch. Compres- sion per Incn. Successive compres- sion per inch. Permanent set. Snccessive permanent set. Bemarks. Pov/ncis, 1,000 2,000 3, too' i, 000 5,000 6,000 - '7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24,000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 32,000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 56, 150 Founds. 1,000 2, 000 3, 000 ' 4, OOfl 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13,000 14, 000 16, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 ■ 23, 000 24,000 26, 000 26, 000 27, 000 28, 000 -20,000 30, 000 31, 000 32, 000 33, 000 34, 000 35, 000 36, COO 37, 000 38, 000 38, 000 40, 000 56, 150 0. . 00005 . 00010 .00016 . 00021 . 00025 . O0O3O . 00035 . 00040 . 00046 . 00051 . 00057 . 00062 . 00068 . O0O74 . 00080 . 00085 . 00001 . 00008 . 00105 . 00110 . 00118 . 00124 .00130 . 00137 . 00142 . 00149 . 00157 .00167 . 00177 . 00187 . 00196 . 00205 . 00218 . 00229 .00248 .00277 . 00290 . 00308 .00840 Inch. 0. . 00005 . 00005 . 00006 . 00005 . 00004 . 00005 . 00005 .00005 . 00006 . 00003 . 00006 . 00005 . 0OU06 . 00006 . 00006 . 00005 . 00006 . 00007 . 00007 . 00005 . 00008 . 00006 . 00006 . 00007 .0OU05 . 00007 . 00008 .00010 . 00010 . 00010 . 00009 .00009 .00013 .00011 . 00019 . 00029 . 00013 .00018 .00032 Inch. 0. Inch. 0. Initial load- . 00001 . 00007 .00010 . 00028 .00140 .00084 Ultimate strength. Failed by triple flexure. 12-INCll B. L. RIFLED MOKTAES, 209 No. 794. Marks, ^^^„«S,y- Leiigtb, 10'^ Diameter, 1".129. Bectional area, 1 square iuch. Gauged length, 5". Applied loads. Total. Founds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, OOO 12, 000 13, 000 14, 000 15,000 16. 000 17, 000 18, 000 19, 000 20, 000 21, 000 '22,000 ' 2;!, 001) 21,000 23. UOO 26, OUO 27, 000 28,000 29, 000 30, 000 31,000 32, oao 3:i, 000 31.000 35, 000 30, 000 37, 000 38, 000 39, 000 40, 000 61, OoO Per square incti. Pound*. 1,000 2,000 3,000 4,000 5,000 0,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13,000 14, 000 IB, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24, 001) 25, 000 26, 000 27,000 28, 000 29, 000 30, 000 31.000 32, 000 33, 000 31,000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 04, 050 Comprea- Biun per inuh. Inah. 0. , 00004 . 00008- . 00012 . 00016 . 00020 . O0O26 . 00030 . 00034 . 00040 .00046 . 00052 .00056 .00062 . 00072 . 00080 .00084 . 00090 . 00096 . 00106 . 00106 .00114 . 00120 . 00126 .00134 . 00142 .00150 . 00158 .00166 . 00176 .OOIPG .00196 . 00200 . 00224 . 00240 . 00256 . 00280 .00302 .00330 Successive compi'08- sionper in CD. Permanent -set. Inch. 0. .00004 . 00004 . 00001 . 0OOO4 . 00004 . 00006 . 00004 . 00004 . 00006 . 00006 . 00006 .00004 . 00006 '.00004 . 00006 . 00006 . 00004 . 00006 . 00006 . 00004 . 00006 . 00008 . 00006 . 00006 . 00008 . 00008 . 00003 . 00008 . (.0008 . 00010 .00010 . 00010 .00010 .00018 .00016 . 00016 . 00024 . 00022 .00028 Inch. . 00006 .OCOIO Successive permanent stit. Inch. Kcm-.u-ks. luilial lo.id. . 00002 .00024 .00014 i '■■ . 00030 . 00076 Ultini.ate stTciigth. Failed by triple flexure. H. Ex. 165 14 210 12-inch b. l. rifled moetaks. Oast-Iron Body, No. 7. No. 3843. Marks, ^2ME^TE, Length of stem, 23 J". Diameter, r'.129. Sectional area, 1 square inch. Gauged length, 20". Applied loads. Elongation per inch. Successire elongation per inch. Permanent set. Successive permanent set. llemarka. , Total. Per square iDch. Pounds. 1,000 - 2, 000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12,000 13,000 14, 000 15, 000 16, 000 17, 000 is; 000 19, 000 20, 000 21, 000 22, OOO 23, 000 24,000 25,000 31, 380 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, OOO 19, 000 20, 000 21.000 22, 000 23, 000 24, 000 25,000 31,380 Inch. 0. .000050 .000095 . 000140 .000190 .000245 . 000295 .000350 . 000400 . 000465 .000510 . 000570 .000635 . 000695 . 000765 .000815 .000895 .000960 . 001045 . 001115 . 001205 .001800 .001400 .001505 . 001625 Inch. 0. . 000050 . 000045 .000045 . 000050 . 000055 . 000050 . 000055 . 000050 . 000055 . 000055 . 000060 . 000065 . 000060 . 000060 . 000060 .000080 .000065 . 000085 . 000070 . 000090 . 000095 . 000100 . 000105 .000120 Inch. 0. Inch. 0. Initial load. Tensile strength. , . 000010 . 000010 • . 000016 . 000005 .000040 . 000025 . 000060 . 000020 . 000090 - .000030 .((00125 . 000036 .000170 . 000045 . 000250 . 000300 . 06608O . 000050 Fractured 1".50 from neck. Appearance, uniform granular. 12-lNClI B. L. RIFLED MORTAES. 211 Eo. 3844. Marks, i^ m^,^t e. Length of stem, 234". Diameter, 1".129. Sectional area, 1 square incb. Gauged length, 20". Applied loads. ElonKation per iuch. Succe.5 .000175 .oooois .000015 . 000010 '"."oooiiso" . OOOliSO .000005 . 000085 . 000035 .000110 '".'606155" .000025 ■".'660045" . 000205 j . 000050 . OO113 15 . 000445 .000140 . tooito ! Fractuied 4".25 fioin iiccU. Appearaucc, uuifoiiu granular. 212 12 -INCH B. L, EIFLED MOETAES. No. 787. Marks, 12 M^R/ru, Length, 12". ' Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 10". Applied loads. Compres- sion per incn. Successive compres- sion ])er inch. Permanent set. Sncce.--siTe perntaneot set. Kemarks. lotaJ. Per square inch. ' Pounds. 1,000 2,000 3, 000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13,000 14, 000 15, 000 16, 000 17, 000 18, 000 19; 000 20,000 21, 000 22, 000 23, 000 24,000 23, 000 26,000 27,000 28, 000 29,000 30, 000 31,000 32, 000, 33, 000 34; 000 35, 000 36,000 37, 000 38, 000 39, 000 40, 000 .17, 280 - Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11,000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 2», 000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31,000 32, 000 33, 000 ■3(,O0O 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 57, 280 Inch. 0. .00007 . 00013 . 00017 .00022 .00027 . 00030 , .00036 . 00041 .00047 . 00051 . 00056 .00061 .-O0067 . 00073 . 00079 . 00085 . 00091 . 00097 .00102 . 00110 . 00115 . 00120 . 00126 . 00135 .00143 . 00160 .00157 .00106 .00172 .00183 . 00193 .00204 .00215 . 00226 .00244 . 00261 . 00280 . 00298 .00326 Inch. 0. . 00007 . 00005 . 00005 . 00005 . 00005 . 00U03 . 00006 . 00005 . 00006 . 00004 . 00005 . 00005 . 00006 . 00006 .00006 . 00006 . 00006 . 00006 . 00005 . 00008 . 00003 . 00005 .000(16 .00009 .00008 . 011007 . Ou007 . 00009 . OOOOS .00011 .00010 .00011 .00011 ,00011 .000)8 .00017 .00019 .00018 . 00028 Inch. 0. , Inch. 0. • Initial load. ITllimalcslrcnKlh. 0. .00002 . 00002 ~ « . 00006 . 00004 . 00010 . 00004 . 00016 . 00006 . 00026 . 00010 - . 00055 .00029 . 00123 . 00070 Failed by triple flexure. 12-INCH B. L. RIFLED MORTARS. Oast Iron feoDY, No. 8. 213 No. 3858. Length of stem, 23". Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 20". Applied loads. Klongation per inch. Successive elongatioD per ijioh. Fermanent set. Successive permanent set. Kemarks. Total. Per square inch. Pounds. 1,000 2,000 3i000 4,000' 5, 000 - 6,000 7,000 8,000 9,000 10,000 11,000 12, 000 13, 000 14,000 15,000' 16,000 . 17, 000 18, 000 19, 000 ■ 20,000 f 21, 000 22, 000 23, UOO 24,000 25,000 31, 070 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000 11, 000 12, 000 13, 000 14, 000 -15, 000 16, 000 17,000 18, 000 19,000 20, 000 SI, 000 22,000 23, 000 24,000 25, 000 31,070 Inch. 0. .000050 .000100 .000150 .000200 .000250 .000310 .000365 .000415 .U0O475 . 000535 . 000610 . 000660 . 000710 . 000780 ■ .000865 , .000935 .001010 . 001085 .001185 .001285 .001405 . 001525 . 001675 .001840 Inch. 0. .000050 .000050 . 000050 . 000060 . 000050 . 000060 .000055 . 000050 . 000060 .000060 .000075 . 000060 .0000.50 . 000070 . 000085 . 000070 . 000076 .000075 . 000100 .000100 . 000120 .000120 .000150 .(fooies Inch. 0. Inch. 0, Initial load. Tensile strength. 0. .000025 .000025 .000035 . 000010 .000050 . 000015 . ooposb . 000030 . 000115 . 000035 . 000160 . 000045 .000240 . 000080 .000380 . 000480 . 000140 . 000100 Fractured 2" from neck. Appearance, granular, in part dark mottled. Specific gra.vity, 7.2781. Hardness, 17.17. 214 ll-lNCn B. L. RIFLED MORTAES. Fo. 3859. Marks, 12 V*J^' Length of stem, 23". Diameter, r'.129. Sectional area, 1 square incli. Gauged length, 20' 1. Applied loada. Elongation per inch. Succeasive elongatiin per incli. Fei'uianeut set. SuccOflsive periiiniient ael. l^eiunrbR. Total. Per square inch. Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11,000 12,000 13,000 14,000 15,000 16, 000 17, 000 18, 000 19,00Q 20, 000 21, 000 22,000 23, 000 24,000 25,000 28, 300 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 siooo 9,000 10, 000 11, 000 12,000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19,000 20, 000 21,000 22, 000 23, 000 24,000 25. 000 28, 300 Inch. 0. .000040 . 000090 . 000140 .000190 .000240 .000295 . 000350 . 000405 . 000463 .000615 . 000575 . 000635 .000710 . 000775 . 000850 . 000935 . 001005 . 001085 .001190 .001305 .001410 .001535 .001705 .001900 Inch. 0. . 000040 . 000050 . 000050 . 000050 . 000050 .000055 . 000053 . 000055 . 000060 . 000030 . 000060 . 000060 . 000075 . 000065 . 000075 .000085 . 000070 . OOOOSO . 000105 . 000115 . OU0103 .000115 . 000250 . 000195 Inch. 0. Inch, it. luiiiul load. 1 Tciisih- ntrength. 0. .OCOOIO '".■ 660615"' ".000035 . 000010 '"".006065 ' .00002 J . 000060 . oooo:.'5 .000105 ""'660100 .000043 '"'.c66o5J .000-55 . 000095 . 066395 . OOUJIO .000140 .000113 Fractured 11" from neck. Appearance, uniform granular. i5pocz:7rfje^77xS':^07y^ -vS^^ec^ ^^^c^ . H Ex.._/^jr.__..._51 2 12-INCH B. I,. KIFLED MORTARS, No. 789. 215 Marks, 12 M^E^TE,. Leiigtb, 12". ' Diameter, 1".129. Sectional area, 1 square inch. - Applied loads. Total. Per square inch. Compres- sion per inch. Saccessive compres- sion per inch. Permanent set. SuccPssive permanent set. Eemarks. Pounds. 1,000 2,000 3,000 1,000 5,000 G,000 7,000 8,000 9,000 10, OOU 11, 000 12, 000 13, 000 U, COO 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21,0C0 22, 000 22. OUO 24, 000 25, 000 26, OGO 27, 000 28, OOO 29, 000 30, 000 31,000 32, 000 33, 000 34, 000 35, 000 30, 000 37, 000 38, 000 39, 000 40, 000 55, 260 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24, 000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31,000 32, 000 33, 000 34, 000 35, OOO 36, OOO 37, 000 38, 000 39, 000 40, 000 55, 260 Inch. 0. . 00003 ,00010 . 00013 . 00018 . 00023 . 00028 . 00033 . 00038 .00043 . 00049 . 00054 .-00059 . 00065 . 00070 -.00076 . 00081 . 00087 . 00092 . 00098 . 00106 . 00112 .00119 .00124 . 00132 .00140- . 00147 . 00153 .00162 . 00176 . 00187 . 00197 . 00212 . 00226 . 00243 . 00263 . 00283 .00:110 . 00340 . 00368 Inch. 0. . 00003 .00007 . 00003 . 00005 .00005 . 00005 . 00006 '.00005 . 00U05 . OOUOO . 00005 . 00005 . 00006 . 00005 .00006 . 00005 . 00006 .00005 . 00006 . 00008 . 00006 . 00007 . 00005 . 00008 . 00008 . 00007 . 00006 . 00009 . 00014 . OOOU . 00010 .00015 . 00014 .00017 . 00020 . 00020 . 00027 . 00030 .00028 Inch. 0. Inch. 0. Initial load. .00002 . 00002 . 00010 . 00003 . 00007 . 00032 . 00015 . 00182 tJllimate strength. Failed by triple flexure. 216 12-inch b. l. kifled mortars. Cast-Iron Body, No. 9. No, 3909. Marks, 12 ME|,TE: Diameter, l".'l29. Sectional area, L square inch. Ganged length, 20". Length of stem, 23". Applied loads. Elongation per inch. SnccessivB elongation per inch. Permanent set. Successive permanent set. Semarks. Total. Per square inch. Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11,600 12, 000 13, 000 14, 000 15, 000 16, 000 17, OCO 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 2t, 000 23, 000 30, 710 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, UOO 19, 000 20,000 21, 000. 22, 000 23, 000 24,000 25, 000 30, 710 Inch. 0. . OOOOSO .000105 . 000155 . 000205 . 000260 .000316 . 000380 . 00U435 . 000495 .000355 . 000630 . 000690 . 000765 . 000830 . 000900 . 000985 . MUSS . 001150 .001250 . 001355 . 001470 . 001635 . 001770 .001985 Inch. .0 . 000050 . 000055 . 000050 . 000050 . 000055 . 000055 .000063 .000055 .000060 . 000060 . 000075 . 000060 . 000075 . 000065 . 000070 . 000085 . 000070 .000005 .000100 .000105 .000116 .000165 . 000135 . 000215 Inch. 0. Inch. 0. Tifitial load. Tensile strength. . 000005 . 000005 .000035 . 000030 .000045 . OOOUIO . 000080 . 000035 .000105 . 000035 . 000150 . 000045 .000215 . 000005 . 000305 . C00090 .000445 . 000560 .OOilltO . 000115 Fractured 5^" from neck. Appearance, uniform granular. Specific gravity, 7.2811. Hardness, 17.08. 12-INCn B. L. RIFLED MORTARS. 217 JS^o. 3910. Marks/^VT,''^ Diameter, 1".'275. Sectional area, .989 square iuch. Gauged length, iJO". Length of stem, 23". Applied loads. BIon^atioD per inoh- ^(iccessive elon^atiitn per incb. PeripaKeut 8ot, Snccefi.sivo pci-i)i;umiit net. Total. Per sqnaie inch. ll,-.ii;ir'is. Pounds. 998 1,996 2,994 3,992 *,990 B,988 6, 986 7,984 8,982 9,980 10,978 11, 976 12, 974 13, 972 14,970 15,908 16, 900 17,904 18, 9ia 19 900 20, 938 21, 9.36 52, 954 23, 95J 24, 930 31,900 Pounds. 1,000 2,000 3,00ft 4,000 5, 000 6,000 7, 000 8,000 9,000 10, 000 11,000 12, 000 13,000 14, 000 15, (100 1",000 17, 000 18, 000 19, 1100 20, 000 21,000 23,000 23, 000 24, 000 25, 000 31, 960 Inch. 0. .000050 . 000095 . 000140 .00,111)5 . 000243 .000290 . 000340 . 000400 . 000450 .000505 . 000555 . 000B25 .000685 . 000730 . 000805 . 000875 . 000935 . OOIOUO .001060 .001:45 .001205 . 001300 .001390 .001490 Inch. 0. . 000050 .0(0013 .000.115 .00(10 5 . 00OU5O .(.00013 . 000030 . 0000(10 .00-1030 . 000055 . 000030 . 00(1070 . 0000(10 . 0(i006 3 . 00.1055 .00.1070 .00 (iOO . 000005 . OOiJdOO . 00008 ) . 000060 .0001.95 . 000090 .000100 llicli. 0. Inch. 0. Initial lo.ul. ' 0. • "."ouoo'is"' '".OOOOli '".'666635 ".'0006.55' . 000065 '".'666166" '"."oooiss " ".ooaois '6.' ".'060026 . 00O(.2O ' 'oo(ioi6" . 000033 .000035"' .000 ',65 . 000205 . 000(130 .000040 1 i Fractured 1" from neck. Appearance, uniform granular. Specific gravity, 7.2839. Hardness, 1G.90. 218 12-mCH B. L. RIFLED MORTAES. No. 821. Marks, 12 W^^ Length, 12". ° Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 10". ■ Applied loads. Compres- sion per inch. Snccessive comprea- sioii per inch. Permanent set. Snccessive permanent set. Kemarks. Total. Per eqnare inch. Pounds. 1,000 2,000 3,000 4,000 5,000 0,000 7,000 8,000 9,000 10, 000 11,000 12, 000 13,000 14, 000 15, 000 10. 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24, 000 25, 000 ' 26,000 27, 000 28, 000 29, 000 30, 000 31,000 32, 000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, too 65,610 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, OOO 13, 000 14,000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24,000 25, 000 26,000 ■ 27, 000 28, 000 29, 000 30, 000 31,000 32, 000 33, 000 34, 000 35, 000 36 000 37; 000 38, 000 39, 000 40, 000 55, 610 Inch. 0. . 00002 . 00008 .00012 .00018 • . 00022 . 00028 .00033 . 00039 . 00043 . O005O .00057 .00061 . 00068 . 00072 . 00080 . 00086 . 00092 . 00098 . 00104 .00111 .00117 .00112 .00130 . 00137 .00144 .00151 .00159 .00169 . 00179 .00190 . 00200 .00215 . 00225 . 00242 . 00262 . 00282 . 00300 . 00325 . 00380 Inch. 0. . 00002 . 00006 . 00004 . 00006 .00004 . 00006 .00005 . 00006 . 00004 . 00007 . 00007 . 00004 .00007 .00004 . 00008 . 00006 . 00006 . 00006 . 00006 . 00007 . 00006 . 00005 . 00008 . 00007 . 00007 . 00007 . 00008 . 00010 . 00010 .00011 . ouolo . 00015 .00010 . O0U17 . 00020 . 00020 . 00018 .00026 .00055 Inch. 0. Inch. 0. Initial load. Ultimate streugtli. 0. 0. . 66664 . 00004 . 00010 . 00006 . 00017 '. 00007 . 00030 •00013 . 00071 .00041 . 00168 . 00097 Failed by triple flexure. 12-INCH B. L. RIFLED MORTARS, 219 No. 822. Marks, 12 MBjTE, Length, 10."'° Diameter, 1",129. Sectional area, 1 square inch. Gauged length, 5". Applied loads. Compres- sion per incn. Successive compres- sion per incb. Permanent set. Snccessive permanent set. Kcmarks. Total. Per square Inoh. Poundt. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, OOO 11, 000 12, 000 13, 000 14, 000 16, 000 16, 000 17, 000 18, 000 19,000 20, 000 21,4)00 22,000 23, 000 24,000 25, 000 26,000 27,000 28,000 29, 000 30, 000 31, 000 32, 000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 65, 300 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000 • 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18,000 19, 000 20, 000 21, 000 22, 000 23, OOO . 24, 000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33,000 34,000 35,000 36, 000 37, 000 38, 000 39, 000 40, 000 65, 300 Inch. D. . 00004 . 00008 .00012 .00016 . 00020 .00024 . 00030 .00034 .00010 .!)0044 . 00050 .00054 . 00060 . 00066 . 00070 . 0«076 . 00080 . 00088 . 00092 . 00100 . 00106 . 00114 .00120 .00124 .00134 . 00140 . 00140 . 00158 . 00164 . 00176 . 00186 .00196 . 00310 .00224 .00244 . C0268 . 00290 . 00320 . 00360 Inch. 0. . 00004 - . 00004 . 001104 . O0004 . 00004 . 0(-004 . 00000 . 00004 . 00006 . 00004 . 00006 .00034 . 00006 . 00006 . 00004 . 00U06 . 00001 . 00UO8 . 00004 .00008 .00006 . 00008 . 00006 .00004 . 00010 . 00006 . 00006 .00010 . 00008 . 00012 .00010 .00010 . 00014 .00014 . 00020 .000:i4 . 00032 .00030 . 00040 Inch. 0. Inch. 0. TiiiUal load. Ultimate strength. 0. 0. . 66602 ■ .00002 . 00006 . 00004 .00012 . ooono . 00026 .00014 . 00038 . 00032 . 00160 . 00102 Failed by triple flexure. 220 12-INCIT B. L. EIFLT5T) MORTAES. Ga8t Iron Body, No. 10. No. 3911. Marks, "^^!|,,^^' Diameter, l".i29. Sectional area, 1 square inch. GajUged length, 20". Length of stem, 23". Applied loads. Elongation per ioch. Siicceasire elongiifion per inch. Permanent set. Snccessive permanent 8C4. Kcmarks. Total. Per square iiich. Pmmds. 1,000 2, 000 3,000 4,000 6,000 6,000 7,000 8,000 9,000 10, 000 11,000 12, 000 13, 000 14, 000 16, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24,000 25, 000 31, 540 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12,000 13, 000 14, 000 15, 000 16, 000 17, 000 18,000 ■ 19, 000 20, 000 21, 000 22, 000 23, 000 24, 000 25, 000 31, 540 Inch. 0. . 000040 . 000080 .000120 .000100 . OOU200 . OOO'JO.i . 000320 . 0003H0 . 000435 . 000490 . 000545 . 000005 . 001 075 . 000745 .000*10 . 000880 . 000950 .001030 .00,095 .001185 . 001200 . 0013.55 .001446 . 001570 Inch. 0. .000040 . OOOJ40 . 000010 .0.10040 . 0000 10 . 000005 . 000055 . ooooco . 000035 . 000055 ■ .0000.-.5 . OOOOGO .OOOU70 .000070 . 000065 . 000070 . 000070 . 000080 . 000005 . 000000 . 000075 . 000095 . 000090 . 000076 Inch. 0. Inch. 0. Initial load. Tensile strenglli. . OC0005 . mohb .000010 .000015 . 000020 . 000020 . 000040 . 000020 .000065 .000025 . 000085 . 000020 . 000105 . 000020 . 000165 . 000050 .000215 . 000270 . OOOOOU .000056 Fractured 2" from neck. Appearance, granular. Specific gravity, 7.2866. Hardness, 18.48. 12-INCH B. L. EIFLEU MORTARS, No. 3013. 221 Marks, 12MEj^,TK, Diameter,. l".129. Sectional area, 1 square inch. Gauged leugtb, 20". Length of stem, 23". Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. Successive permanent set. Eemarks. Total. Per Bqaaro inch. Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11,000 12, 000 13,000 14, 000 1,5, 000 10, 000 17, 000 18, 000 19,000 20, 000 21, 000 22, 000 23, 000 24, 000 25, 000 20,8fiO Pounds. 1,000 2,000 3,000 4,000 5,000 6, 000 7, "00 8,000 9, (TOO 10, 000 11,000 12,000 13,000 14, 000 1,5, 000 16, 000 17 000 18,000 19, 000 20, 000 21, 000 23, 000 23, 000 21, OUO 25, 000 29, 8cl0 Inch. .'oof)055 . 000105 . 0001^0 . 000200 . 000245 . OOr.'PO .000323 . 000380 . 000445 .OOO.iOO . 000565 .000610 .000705 . 000790 . 000865 .000910 .001030 .001125 .001215 .001330 .001450 . 001600 . 001735 . 001980 Inch. 0. .000055 . 000050 . 000063 . 000040 .000045 . OOOOSi . 000013 . 010055 .000005 . 000065 .000065 . 000075 . 000065 . 000083 . 000075 .000075 , . 000090 . 000095 . 000090 .000115 .OOOIM . 000160 .0001.55 .000226 Ineh. .0 Inch. 0. Initial load. Tensile strengtli. -.000005 -.000005 1 -. 000013 -.OOJOIO 0. . 000015 . 000040 , 000040 . 000063 . 000025 . 000110 . 000055 . 000180 . 000070 . 000270 . 000090 .000435 .000575, .000165 . 000140 Fractured 3",75 from neck. Ai)pearance, granular. Specific gravityy 7.2838. Hai'dness, 16.5G. 222 12-INCH B. L. RIFLED MOKTARS. No. 823. Marks, 12 M^E^TE, Length, 12". ° Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 10". Applied loads. Compress- ion per inoli. Successive compress- ion per iDCh. Eerraanent sot. Successive permanent set. Bemarks. Total. Per square inch. Pounds. 1,000 2,000 3,000 4,000 6,000 6,000 7,000 . 8,000 - 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 16, 000 16, 000 17, 000 18, 000 19, 000 2C,000 21, 000 22, 000 23, 000 , 24,000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31,000 32,000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 30, 000 40, 000 66,400 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 16, 000 16, 000 17, 000 18, 000 19,000 20, 000 21, 000 22, 000 23, 000 24,000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 56, 400 Inch. 0. . 00005 .00010 . 00014 .00019 . 00024 . 00030 . 00036 . 00041 . 00047 .00053 . 00058 . 00063 . 00068 . 00073 .00080 . 00087 .00093 . 00098 . 00103 .00109 . 00117 . 00122 .00129 .00136 .00143 .00151 . 00158 .00167 . 00177 . 00189 . 00200 .00213 . 00229 .0024.5 .00270 . 00288 . 00309 . 00340 .00370 Inch. 0. .00005 .00015 , .00004 . 00005 . 00005 . 00006 . 00006 . 00005 , .00006 . 00005 . O00O6 . O0005 . 00005 . 00005 . 00007 . 00007 . 00006 . 00005 . 00005 . 00006 . 00008 . 00005 .00007 . 00007 . 00007 . 00008 . 00007 . 00009 . 00010 .00012 .00011 .00013 - .00016 . 001116 .00J25 .01)018 .00021 . 00031 . 00030 Inch. 0. Inch, 0. Initial load. Ultimate strength^ 0. . OCOOl . 00001 .00005 . 00004 . O0OO9 . 00004 .00017 . O0OJ8 - . 00033 ,00016 ■ . 00075 . 00043 '"".ooni" "".'(:0099 1 Failed by triple flexure. 12-INCH B. L. RIl'XKD MOUTARS. 2J3 No. S24. Marks, 12 W»J^ Leugtb, 10". '° Diameter, J.". 129. SectioitRl area, 1 square iuch. Gauged leugtb, 5". Applied loads. Total ('Per square iDca. Pounds. 1,1100 2,000 3,000 4. 000 S,000 6,000 7,000 8,000 0,000 10, 000 11, 000 12, 000 13, OOO 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 21. 000 25, 000 26, 000 27, i:00 28, 000 29, OOO 30,000 31, 000 32,000 33, 000 34,000 35, 000 30, 000 37, 000 38, 000 39, 000 40, OOO 04, 900 Pounds. 1,000 2,000 3,000 4,000 6,000 6,000 7,000 8,000 9,000 10, 000 11,000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24, 000 25, 000 26, OOO 27, 000 28, 000 29, OOO 30, 000 31, 000 32, 000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 64, 900 Compres- siun per ill en. Inch. 0. . 00002 .00006 .00012 .00016 . 00020 . 00024 . 00030 . 00036 . 00042 . 00046 . 00052 . 00058 . 00062 . 00068 . 00072 . 00078 . 00084 . 00090 . 00104 .00110 , 00U6 . 00121 . 00132 . 00142 .00148 .00)56 .00104 . 00174 .00188 . 00196 . 00208 . 00222 . 00242 . 00261 . 00284 . 00312 . 00342 . 00378 Successive coniprca- siou per iucli. Inch. 0. . 00003 . 00004 . 00306 . OOUOl . OU004 . 00004 . 00006 . 00006 .. 00000 . 00004 . 00006 . 00006 . 00004 . 00006 . 00004 . 00006 . 00006- . 00006 . O'lOOO . 00008 . 00006 . 00006 . 00008 .00008 .00010 . O0006 .00008 . 00008 . 0001,0 . 00014 . 00008 . 00012 . 00014 . 00020 . 00022 . 00020 ' .00028 . 00030 . 00036 Pcnuanont sec. Inch, 0. . 00002 . 00010 . 00180 Successive periufmeut Inch. 0. .00110 llem.irks. Initial loacl. XTltimate strength. Failed by triple flexure. 224 22- inch b. l. eifled mortars. Cast-Ieon Body, Fo. 11. No. 3976, Marks, '2^£".j}^'»' Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 20". Length of stem, 23". Applied loads. Total. Per square inch. ElonjQ;atioD per inch. Successive elongation per inch. Permanent set. .^UCCCi».S]VO pcroiaiiejit set. Bcmai'ks. Pounds. 1, 000 2,000 3, COO 4,000 5,000 6,000 7.000 8.000 9,000 10, 01 11,000 12, 000 13,000 14, 000 15,000 16,000 17.000 18,000 19, 000 20, (.00 2!, 000 22, 000 23, 000 24, OHO 2.^ OHO 29, !.80 Foutide. 1,000 2,000 3, 000 4, 0( 5,000 6,000 7,000 8,000 9,000 10, 000 11,000 12, 000 13, 000 14, 000 15,000 16,(00 17. 0(rO IK, 0( 19,000 20, 000 21, 000 22, ( 00 23, roo 21, "(10 25. OHO 29, 91*0 Inch. 0. . 000045 . 000095 .000U5 . 000200 . 000245 . 000300 . 000345 . 000395 . 000455 . 000505 . 000560 . 00(1020 . 000680 .00(1745 . 000800 . 00. 805 .0 (ir40 .001015 . 001 100 .001190 .oorjoo .oui:i90 .001490 .001040 Inch. 0. . 000045 . 00005(1 . 000050 . 0000.55 .000015 .0000-5 . 000045 . 0000.50 .000060 . 0001150 . 000055 . 000060 . 000(100 . 000005 .(100(5) . 000005 . lii'(;075 . 000075 . 0(111085 . 000(11(0 .COO 00 .0(101(10 .onaoo .000150 Inch. Inch. . (.00005 . oouois . 000040 .6106.50 . 000085 .'606126" . 000270 .0.0345 . 010005 .'660016' . 000025 .666616 . 000035 .606635' . 000070 . 00.101-0 . 000075 lullial load. Tensile stton^th. Friictnred 3"..') frorx neck. Appeai'auce, granular, mottled. 12- INC II B. L. RIFLED MOETABS. 225 No. 3977. Marks, 1' Vi-f ^' Diameter, 1". 129. Sectional area, 1 square inch. Gauged length, 20". Length of stem, 23". Applied loadR. Elongation per inch. Sncccssivo elongation- per inch. - FeiTiiauont set. Successive permaaeut set. Kemarks, Xotal. Per a(]aare ineli. Pounds. 1, 000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13,000 14,000 15, 000 16, 000 17,000 18, 000 19, 000 20,000 21, 000 22, 000 . 23,000 24,000 24,900 Pounds. 1,000 2, 000 3,000 4,000 6, 000 6,000 7,000 8,000 9,000 10, 000 ii; 000 12, 000 13, 000 14,000 15,000 \ 16,000 17, 000 18, 000 19, 000 ' 20, 000 21, 000 22, 000 «3, 000 24,000 24,900 Iruh. 0. .000050 . 000090 . OOOUO . 000190 .000240 . 000290. . 000340 . 000395 . 000460 . 000500 . 000560 . 000610 .000680 . 000740 . 000800 ■ . 000800 . 000040 . 001005 .001090 .001183- . 001270 . (101365 .001470 Inch. 0. . 000050 . 000040 . 000060 . 000050 . 0000.50 . 000(150 ' .OOOO'iO . 000055 . 000055 ; 000060 . 000060 . 000050 . 000070 .000060 ,000060 .000060 .- 000080 .000066 '. 000035 .000095 .000085 .000095 . 000106 Inch. 0. Inch. 0. Initial load. Tensile strength. 0. .000010 . 000010 . 000020 . 000010 . 000040 . 000020 . 000060 .000020 . 000095 .000035 . goo 135 '".'600260'" . 000010 "'!66oo65" .000275 .000075 Fractured at neck. Appearance, granular mottled. TENAcrry specimens. General marks, 12 M En T Ej. No. of test. . Nnnibors. Diameter. Sectional area. Tensile strength. Specific gravity. Hardness. Total. Per square inch. 3078 3070 30K0 3081 3082 3083 JI T, I MT4 M T, .M M T, I M T, MT, Inches. 1. 129 1. 1;;9 1.129 1.129 1. 129 1.129 Sq. inches. 1.00 1.00 1.00 1.00 1.00 1.00 Pounds. 30, 180 36, 220 32, 470 85, 790 33, 260 3a, 100 Pounds. 30, 1H(I 36. 2-.'0 32, 470 3.5, 790 33.*2(;0 33, 100 7..1.')44 7. 3.)J() 7.3193 18.98 17.62 17.99 7.3135 16.66 Apiiearnnce of fracture, granular mottled. H. Ex. 165 15 226 12-INCH B. L. RIFLED MOKTAES. No. 827. Marks, i-M^'ip^i'' Lijngth, 12". Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 10". . Applied loads. Compres- sion per inch. Sacoessive compres- sion per inch. rermanent set. Snccessive permanent set. Ecraarks. Total. Per square inch. ■ Poundt. 1,000 2,000 3,000 4; 000 5,000 6,000 7,000 8,000 &,000 10,000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 IF, 000 19, 000 20, 000 21 ; boo 22, 000 23, 000 24, 000 25, OOO 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 34,000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 56, 050 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11,000 12,000 13, 000 14,000 16, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23,000 24, 000 25, 000 26,000 27, 000 28, 000 29, 000 30, 000 31, OOO 32, 000 33, OOO 34, 000 35, 000 36, 000 37, 000 38, 000 39, COO 40, 000 56, 050 inch. 0. .000060 . 000100 . 000130 .000180 . 000230 .000280 . 000330 . 000380 .000430 .000490 .000560 . 000600 . 000660 .000710 . 000770 .000820 . 000880 . 000920 . 000980 .001030 . 001100 .001160 . 001210 . 001290 .001360 .001410 .001500 . 001570 . 001660 .001740 . 001810 . 001910 . 002040 .002210 .002320 .002500 . 002680 .00i910 . 003130 Inch. 0. . 000060 . 000040 . 000030 . 000050 .000050 . 000050 .000050 . 000050 . 000050 .000060 . 000070 . 000040 . 000060 .000050 . 000060 . 000050 . 000060 . 000040 . 000060 . 000050 . 000070 .000060 . 000030 . 000080 . 000070 . 000050 .000090 . 000070 . 000090 . 000080 . 000070 . 000100 .000130 . 000170 . OOOUO .000180 . Odomo . 000230 .000220 Ineh. 0. Inch. 0. Inilial load. Ultimate strongtli. 0. 0. .000010 . 000010 . 000060 . 001,050 . 000000 . 000030 . 000170 . 000080 . 000280 .000110 . 000570 . mom J . 001300 .000730 Triiile flexure. 12-INCH B. L. RIFLED MOETAKS. 227 Marks, i2Me^(Tii. Length, 12". '° Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 10", No. 828, Applied loiids. Total. Per square inch. Compres- sion per incb. SnccesRivo compres- bion per incn. I'ennaneot sec. Succoflflive pernian^ut set. Hemarks. Founds. 1,000 2,000 3,000 4,000 5,000 6, 000 7,000 8,000 9,000 !0, 000 11, OOO 12,000 i:i, 000 11, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 0(0 21, 000 22, 000 23, UOU 24, 000 25, 000 26, 000, 27, 000- 28, 000 20, 000 30, 000 31,000 32, 000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 53, D50 FouTids, 1,000 2,000 8,000 4,000 5,000 0,000 7,000 8,000 9,000 10,000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, goo 2:t, llOO 24, 000 25, OOO 26, 000 27, 000 28, 000 29, 006 30, 000 31, OOO 32, 000 33, 000 34,000 35, 000 36, 000 37, 000 38, 000 39,000 40, 000 .53, 950 Inch. 0. . 000050 . 000100 .000150 . 0110190 . 000240 . 0U0300 . 000360 . 000400 . 000160 . 000500 . 000560 .0(OilO . 0OU(>70 . 001)710 . 000790 .000850 . 000890 . 000960 .001010 .001090 . 001160 .001210 .001200 . 001300 .001420 .001. WO . 001590 .001080 . 001790 .001920 . 002000 . 002200 . 002360 . 002600 . 002700 . 003080 . 00.3330 . 003000 . 004090 Inch. 0. . 000050 . 000050 . OOOOoO . 000040 . 000050 . 000060 . OOOOfiO . 000040 . OUOOOO . 000040 .001060 . OOOO.iO .000060 . 000040 . 000080 . 000060 . 000040 . 000070 . 0C0050 . OOOOSO . 000070 . OOOOSO . 000080 . 000070 . 000060 . 00(1080 . 000090 . 000090 .000110 . 000130 . 000140 . 000140 .000160 . 000240 .000190 .000290 .000250 . 000330 . 000430 Inch. Inch. riiitlal load. . 000070 .000110 . 000040 . 000080 . 000390 .000200 . 000060 . 002170 .001210 tntlmatc strength. Trii)le tlexure. 228 12-lKCH B. L. KIFLED MOETAKS. Marks, 12 M^K^TE^ Diaipeter, 1".129. Sectional area, 1 sqntire inch. Gauged length, MO". Length of stem, 23". No. 3913. Applied loads. Elongation per inch. Success ire elouj^atiou per inch. Permanent set. Snccessivo peniiuiiL'Ut sot. Somarka. Total. Per square incn. Founds. 1, 000 2,000 •3,000 4,000 5,000 6, 0(10 7, 000 ~ 8,000 9,010 10, 000 11, 000 12, 000 1.1.0 14, 01 15, 000 16, 000 17,000 18,000 19,000 20,000 21,000 22, 000 23, 000 24, 000 25, 000 32, 290 Pounds. 1,0.0 2,000 3,000 4,000 5, 000 6,000 7,000 8, 000 9,000 10, 000 11,000 12, 000 13, 000 14, 000 15, 000 16,000 17, 000 18, 000 19, 000 20, 000 21,000 22, 000 23, 000 24,000 25, 000 32, 290 Inch. Inch. Inch. 0. Inch. 0. Initial load. Tensile atrensl.Ii. . 00.1(150 . 00U095 . 000145 . 000200 . 000250 .000310 . 000380 . 000440 .000490 . 000545 .000600 . 000680 . 000756 .000830 ■ . 000905 .000990 .001000 .001185 . 001200 . 001405 .001535 . 001730 .001900 . 002130 . 000050 .0(J0015 . OOU050 . 0O00.)5 . 000060 . 000060 .000070 . 000060 . 000050 . 000055 . 000055 . OOOilSO . 0011075 .-000. '75 . 000075 . 000085 .000100 . 000095 .000105 .000115 .000130 .000190 .000170 . 000230 0. 0. .000035 .000035 . 000040 ""'."ooooco" . 000Q05 ".C00020 .000095 '".'666145' '".'666220 . 000035 '".'666050' . 000075 .000340 "',"66o,-)56" . OOU700 . 000120 '".'666iiio .000150 Fnictured at middle of stem. Ai'pcarance, granular. Specific gravity, 7.3136. Hardi/ess, 15.43. 12-INCH B. h. RIFLED MORTARS, 229 No. 3914. Marks, 12" ^)i^'^'«^ Diameter, 1".129. Sectioual area, 1 square inch. Qaugert length, 20". Length of stem, 23". Applied loads. Elongation per laoli. ^urcessive elou^ation per incb. SlICCORSiVB Kemarks. Total. Per square inch. Pe,ma.,en,, ,^,,,,„^,,, 1 Pounds. 1,000 2,000 3,000 4,000 6,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12,000 13, 000 11, 000 15,000 16, 000 17, 000 18,000 19, 000 20, Olio 2!, 010 22. OJO 23,000 24,000 2.M00 30, 010 Pounds. 1,000 2,000 3,000 1,000 6,000 6,000 7,000 8.000 9,000 10, 000 11,000 12, 000 13,000 14,000 16,000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 21,000 25, 000 30, 040 Inch. 0. . 000050 .000100 .000160 .000206 . 000255 .000315 , 000380 . 000440 .000190 .000850 .000615 . 000690 . 000750 . 000830 . 000895 . 000990 . 001060 . 001155 . 001265 .001395 .001110 . 001670 .001815 .002050 Inch. 0. . 000050 .000050 . 000060 . 000045 . 000050 . 00Q060 ; 000066 . 000060 . 000450 . 000060 .000065 - .000075 .000060 . 000080 .000066 . 000095 . 000070 . 000095 . 000110 .000130 . 000115 .000160 . 000176 .000205 Inch. 0. Inch. 0. Initial load. Tensile sircnstii. 0. 0. . 000030 . 00, 0.'iO . 000050 . 000020 .000060 . 000010 . 000100 . 000040 . 000145 .000045 .000210 .000065 ■ .000335 .000125 . 000515 . 000650 . 000180 .000135 Fractured 2|" from neck. Appearance granular. 230 12-INCH B. L. RIFLED MOETARS. No. 825. Marks, 12 ^I'Ji.JP'^ Length, 12". Diameter, 1".129. ' Sectional area, 1 square incli. Gauged length, 10". Applied loads. Compres- siou per iuoh. Successive compres- siou per inch. Pcrmaucnt set. SiicceHsive poi'uiauent set. Kemarks. Total. PtT square iuuli. Pounds. 1,000 2,000 3, COO 4,000 5,000 6,000 7,000 8,000 9,000 10,000 11,000 13, 000 13,000 14, 000 1.5, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, OUO 23, OUO 24,000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33, OOO 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40,000 53,800 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11,000 12, 000 13,000 14, OOO 15, 000 16, 000 17, 000 18, 000 19, 000 2u, 000 21,000 22, 000 23, 000 24, 000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31,000 32, 000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40,000 S3, 800 'inch. 0. . 000030 . OoOOSO . 000130 . 000180 . 000230 . 000280 . 000330, . (.00390 .000440 - . 000500 . 000540 , 000600 . 000670 .000710 . 000780 .000830 . 000900 . OOuOOO .001010 . 001070 . 001130 .001200 .001280. .001370 . 001430 .0U1510 .001600 . 001700 . 001810 . 001930 ; 002060 . 002180 . 002360 . 002580 .002810 . 003080 .003390 .003720 . 004180 Inch. 0. . 000030 . OOOOoO . 000050 . O00U5O . 0U0050 . 000050 . 000050 . 000060 . 000050 . 000060 . 000040 . 000060 . 000070 . 000040 . 000070 . 000050 . 000070 . 000060 .000050 . 000060 . OOOOOO . 000070 . 000080 . 0U0U90 . OOOOOO . OOUOSO . 000090 .000100 . ooouo . 000120 . 000130 . 000120 .000180 .000220 .00U230 . 000270 .000310 . 000330 . 000460 Inch. 0. Inch. 0. luitial load. DUiniate strength. 0, 0. .000010 . 000010 .000060 . 000050 .oooioo . 000040 . 000200 .000100 . 000410 .000210 . 000920 . 000510 . C02220 . 001300 Triple flexure. 12-lNOH B. L. BIFLED MOETAES. 231 Marks, ^^Vi'"^^^- Length, 10". "" Diameter, 1".129. Sectional area, 1 square inoli. Gauged length, 5". m. 856. Applied loads. Compres- sion per inch. SuGceasiTe compres- sion per inon. Permanent set. Succossivo permanent set. Eemail.8. Total. Per square inch. Pounds. 1,000 2,000 3,000 4,000 6,000 6,000 7,000 8, 000 9,000 10, 000 11, 000 12, 000 13, 000 14,000 16, COO 16, COO 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24, 000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 34, 000 35,000 36,000 37, 000 38, 000 39, 000 40,000, ^2, 800 Pounds. 1,000 - 2,000 3,000 4,000 6,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 16, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21,000 22, 000 23, 000 24,000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 34, 000 36, 000 36, 000 37, 000 38, 000 39, 000 40,000 02, 800 Inch. 0. .000040 . 000100 .000140 . 000200 . .000240 . 000280 .000340 . 000380 .000440 . 000600 . 000660 .000620 . 000660 . 000700 . 000740 . 000780 . 000860 . 000940 .001000 .001040 . 001100 .001160 . 001240 . 001320 . 001400 . 001460 . 001560 . 001700 . 001800 . 001960 . 002080 . 002240 . 002400 . 002720 . 003000 .003240 . 003540 .003940 . 004440 Inch. 0. . 000040 . 000060 .000040 . 000060 . 000040 .000040 . 000060 . 000040 . 000060 . 000060 . 000060 . 000060 . 000040 . 000040 .000040 . 000040 . 000080 . 000080 . 00U060 .000040 . O0U06O .000060 . 000080 . 000080 . 000080 .000060 . 000100 . 000140 . 000100 .000160 . 000120 . 000160 . 000160 .000320 . 000280 .000240 . 000300 .000400 . 000500 Inch. ,0. Inch. 0. Initial load. Ultimate strength. 0. 0. 0. 0. . 000060 . 000060 .000080 .000020 . 000160 .000080 . 000400 . OO034O "^ . 001240 . 000840 .002400, .001220 Triple flexure. i62 12-lNCH B. L. RIFLElJ MORTARS. Oast-Ieon Body, No. 12. No. 3980. Marts, ^^VB.'"''' Length of stem, 23". Diameter, 1'{.129. Sectional area, 1 square inch. Ganged length, 20". Applied loads. EloEgation per inch. Successive elongation per inch. Permanent set. SuccpFsiTe permanent set. Remarks. Total. Per square inch. Pounds. 1,000 2,000 3,000 4,000 6,000 6, 000 7,000 8,000 9,000 10, 000 11,000 12, 000 13, 000 14,000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21; 000 22, 000 23, ooa 24, 000 26, 000 29, 210 Potind». 1,000 2,000 3,000 4,000 5,000 6, 000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15,000 .16, 000 17, 000 18, 000 19, 000 20,000' 21, 000 22, 000 23, 000 24, 000 25, 000 29, 210 Itich. 0. . 000040 . 000090 . 000140 .000195 . 000245 . 000300 . 000350 . 000405 . 000155 .000510 .000570 . 000035 . 000095 . 000765 .000815 . 000890 . OOoteO .001040 .081105 .001190 .001290 . 001385 .001485 . 001000 Inch. 0. . 000040 . 000060 . 000060 . 000065 . 000050 . 000055 . 000050 . 000055 . 000050 . 000055 . 000060 . 000065 . 000060 . 000060 . 000060 . 000075 .000070 . 000080 . 000065 . 000085 . 000100 . 000095 .000100 . 000115 Inch. 0. Inch. 0. Initial load. Tensile strengtli. 0. . 000005 . 000005 . 000015 .0000)5 . 000035 .000020 . 000050 . 000015 .000070 . 000020 . 000100 . 000030 .000150 . 000050 . 000205 . 000255 ' .000055 . 000050 _ Fractured |" from neck. Appearance, uniform granular. Specific gravity, 7.2767. Hardness, 18.58. 12-lNCn p.. L. niKF.F.t) MORTARS, 233 No. 3981. Marks, ^^ VtJ ^' Length of stem, 23". Diiimeter, 1".129. Sectional area, 1 square inch. Gauged length, 20". Applied loada. Elonffatinu per iiiub. .'*ivo [lenn.'Uu ut set. lionjarks. Total. Per square inch. Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15,000 16, 000 17, 000 18, 000 19, 000 20, 000 21,000 22,000 23, 000 24,000 25, 000 31,800 Pounds. 1,000 2,000 3,000 4,000 6,000 6,000 7,000 8,000 9,000 10, 000 11,000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24, 000 25, 000 31, 800 Inch. 0. .000150 .000100 . 000150 . 000205 . 000255 .000310 ■000365 . 000420 . 000480 . 000.540 . oooaoo . 000655 . 000715 .000710 . 000850 .000910 . 000990 .001055 .001140 .001210 .001293 . 001390 .001491) .001590 Inch. 0. . 000050 . 000050 . 000050 .000055 . 000050 .0000.56 . 000055 . 000065 . 000060 . . OOUOOO . 000060 . 000055 . 000060 . 000075 . 000060 . 000060 . 000080 . 000065 . 000085 .00;:070 . 000085 . 000095 .000100 . 000100 Inch. 0. Inch. 0. " Initial load. Tensile strrngth. 0. .000010 . 000010 . 000030 . 000020 . 000040 .000010 .000050 . 000010 . 000070 . 000020 . 000100 .000030 .666146 ""."660195 .000240 . 000040 '".'660055' . OO0U45 Fractured If" from neck. Appearance, uniform granular. TENACITY SPECIMENS. General marks, M Eja T Ei. No. of test. Addilional marks. Diameter. Sectional area. Tensile strength. Speoiflc gravity. Hardness. Total. Per square inch. 3090 3091 3092 3093 3094 3095 MT, I M T„ MTjM 11 'I's I M T, M Tg Inches. 1.129 1.129 1.139 ]. 129 1. 1::9 1. 129 Sq. inches. 1.00 1.00 1.00 1.00 1.0(1 1.00 Pounds. 33, 580 30, 010 33,100 32, 710 32, 240 33, 490 Pounds. 33, .180 30,010 3.1,100 32,710 32, 240 33, «0 7.2S04 7. 27:!fi 7.2943 20. 03 18. ,58 20, 47 Appearance of fractures, uniform granular. 234 12-INCH B. L. RIFLED MOETAES. No. 831. Marks, ^^^i}^^ Length, 12". ' Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 10". Applied loads. Compree- sion per inch. Succesaive compres- aion per inch. PerEuanent set.; Successive perraanent set. Eemarks. Total. Per square inch. Pounds, 1,000 2,000 3,000 4,000 6, 000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18,000 19, 000 20, 000 21, 000 22, 000 23, dOO 24, 000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31,000 32, 000 33, 000 34, 000 35, 000 30, 000 37, 000 38, 000 39, 000 40, 000 61, 750 Pounds, 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 IS, 000 19, 000 20, 000 21, 000 22,000 23, 000 24, 000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000, 84, 000 36, 000 36, 000 37, 000 38, 000 39, 000 40, 000 61, 750 Inch, 0. . 00005 . 00010 .00014 .00020 . 00025 .00030 . 00036 .00041 . 00047 . 00052 . 00058 . C0065 . 00071 . 00076 .00081 .00087 . 00092 . 00098 . 00103 .00109 . 00115 .00121 . 00128 .00133 . 00140 .00147 . 00152 . 00160 .00168 . 00174 . 00182 .00190 . 00199 . 00208 .00220 . 00230 . 00242 .00253 . 00271 Inch, 0. . 00005 . 00005 . 00004 .00006 . 00005 . 00005 . 00006 . 00005 .00006 . 00006 . 00U06 .00007 . 00006 . 00004 . 00006 . 00006 . 00005 . 90006 . 00005 . 00006 . 00006 . 00006 . 00007 . 00005 . 00007 . 00007 . 00005 . 00008 . 00008 . 00006 . OOOOS . 00008 . 00009 . 00009 .00012 .00010 .00012 .00011 . 00018 Inch, 0. Inch. 0. Initial load. Ultimate strongtTi. 0. . 00002 . 00002 . OOOOS . 00006 . 00010 . 00002 .00017 . 00007 . .00023 .00006 . 00040 .00017 . 00076 . 00030 Failed by triple flexure. 12-INCn B. L. RIFLED MORTAKS. 235 Marks, "'^tIwJ^' Length, 12". ' DiiimettT, 1".)29. Sectional area, 1 square inch. Gauged length, 10". No. 832. Applied loads. Total. Poundg, 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14,000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24,000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31,000 32, 000 33, OUO 34, 000 35, 000 36. 000 d7, 000 38, 000 39, 000 40, 000 60, 620 Per square inch. Pounds. 1,000 2, 000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, OOO 16, 000 17, 600 18, 000 19, 000 20, 000 21, 000 22, 000 23, COO 24, 000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31,000 32, 000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 60, 620 Coinpres- aiou per iucli. Inch. 0. . 00006 .00UI2 .00017 . 00022 .00U27 . 00032 . O0OJ8 . 000(3 rO0O49 . 00054 . 00059 . OOOCo . 00070 . 00078 . 0008,1 . 00089 . 00094 . OOOOi) . 00105 .00111 . 00117 .00123 .00130 .00136 .00142 . 00148 .00154 . OOlfil . 00170 . 00178 . 00183 . 00190 . 00199 .002] (I . 00322 . 00235 .00248 . 00260 .00279 Successive compres- siou per iuoa Inch. 0. . 00006 . OOU06 . 00005 . 00005 . 00005 . 0(1005 .(.OUOG , 0u00.j . 00006 . 00005 . 00005 .00006 . 000U5 .00008 . OOOOS . 00006 . 00005 . 00U05 . OOOOO . 00006 . 001106 . 00006 . 00007 . 00006 ,00006 . 00006 . 00006 .00007 . 00009 . 00008 . 00005 . 00007 . 00009 .00011 . 00012 .00013 . 00013 . 00013 . 00019 Permanent set. Inch. 0. . 00001 . 00019 . 00028 . 00041 . 00082 Successive periiiMnent set. Inch. 0. .00007 . 00003 . 00041 Remarks. Tuitial load. Ultimate streugtli. 236 12-INCII B. Jj. RTFI.ED MORTARS. No. 3978. Diameter, 1" J29. Sectional area, 1 square incli. Gauged length, 20". Length of stem, 23". Applied loada. Eloujzation per mcli. Sacceasive eloiigatioa per inch. Permauenf set. Successive peimauent set. Komarks. Total. Per sqnare inch. Pounds. i;ooo 2,000 3,000 4,000 5,000 6,0P0 7,000 8,000 9,000 10, 000 11,000 12, 000 13, 090 14, 000 15, 000 16, 000 17, 000 18, 000 19.000 20, 000 21, 000 22, 000 23, 000 24, 000 26, 000 26, 270 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11,000 12, OUO 13, 000 14, 000 15, 000 16, OCO 17, (00 18, 000 19, 000 20, oo6 21, 000 22, 000 23, 000 24, 000 26, OUO 26, 270 Inch. 0. . 000060 .000135 .000185 .000245 . 00ua05 . 000355 . 000430 . 000495 . 000505 .000610 .000710 .000790 . 000880 . 000970 .001070 .001160 .001275 .001400 .001500 .001710 . 001890 .002140 . 002390 . 002750 Inch. 0. . 000060 . 000075 . 000060 . 000060 . 000050 . 000060 .000076 .000065 - . 000070 . 0001175 . 000070 . 000080 .000090 . 000090 . 000100 . 000090 . 000115 . 000125 . 000160 . 000150 . 000180 . 000250 .-000250 .000360 Inch. 0. Inch. 0. Initial load. Tensile strengtll. .0t0()15 .000015 . 000045 .000030 . 000055 . 000010 . 000090 .000036 . 000140 . 000050 . 000205 . 000065 . 000335 . 000130 . 000490 . 0001.55 . 000810 . 001055 . 000320 . 000245 Fractured 6" from neck. Appearance, uuifonn granular. Specilic gravity, 7.2810. Harduess, IS 43 12-I.NCIl B. Lu KIFLED MOETAKS. 237 Marks, 1"^?,"'^^ Diameter, 1"'.129. Sectional area, I square inch. Gauged length, 20". Length of stem, 23". No. 3979. Applied loads. Elongation per inoh. Saocessive elonfration per inch. Permanent set. Sncceasive perninnout set. Kem.irks. Total. Per sqaare inch. Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13,000 14, 000 15, 000 16, 000 17,000 18, 000 18, 000 20,000 21, 000 22, 000 23, 000 24,000 25, 000 27,360 Fotmds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 0011 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23,000 24, 000 23, OOO 27, 360 Inch. 0. . 000055 .000110 .000165 . 000225 . 000290 . 000350 .000410 . 000490 . 000565 . 000620 . 000695 .000780 .O0OS6O . 000!'45 .OOlO.'iO .001150 .001255 .001395 .001515 .001660 . 0018.50 . 0112085 . 002350 .002685 Ineh. 0. . 000055 . 000053 . 000055 .000060 .000066 . 000060 . 000000 , 000080 .000065 . 000065 .000005 .000085 .OOOORO .0000R5, .000105 . oooioo . 000105 . 100140 . 000120 .000145 .000190 - .000235 .000205 .000335 Inch. 0. Inch. 0. ruilialload. .000005 . OuOOOS . 000040 . 000035 . 000050 . OOOOIO .600080 '".'1166115' . 000010 ".'666635 ' . 000190 . 000075 .000290 .000100 .000160 . 000170 . 000760 ' .001000 . 000300 . 000240 Fractured 4" from neck. Appearance, uniform granular. TENACITY SPECIMENS. General marks, 12 M E12 T Rj. No. of test. Additional marks. Diameter. Sectional area. Tensile strengdi. Spt'cilic Sravil.y. Hardness. Total. Pt.r square inch. 3084 .3085 3086 3087 3088 3089 BT3I B Ti BTjM BLsI BL,0 BLsM Inch. 1.129 1.129 1.129 1.129 1.129 1.129 Sq. inch. 1.00 1.00 1.00 1.00 J 1 00 1 i.ooj Founds. 28, 320 32, 480 29,910 20, 300 Upperend. 29, 490 Upperend. 29, 150 Upperend. Founds. . 2R, 320 3 1, 480 2*e. Length of stem, 23". Diameter, 1".129. 8ectional area, 1 square incli. Gauged length, 30". No. 3984. Applied loads. MongiltiaD per inoh. Suooessive eloDgation per inch. Permanent set. Sacceasive permanent set. EemarlcB; r Total. Per SQuare, incn. Pounds. 1, 000 2,000 3,000 4,000 5, 000 6,000 7,000 8,000 9,000 10,000 11, 000 12,000 13, 000 14,000 15, 000 16, 000 17, 000 18,000 19,000 20, 000 21, 000 22, 000 23, 000 24, 000 25,000 29, 560 Pounds. 1', 000 2,000 3,000 4,000 ' 5,000 6,000 7,000 " 8,000 9,000 10, 000 11,000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19,000 20, 000 21,000 22, 000 23, 000 24,000 25, 000 29,560 Inch. 0. . 000050 .000100 .000155 .000210 . 000275 .000330 . 009385 .000440 . 000500 .000570 . 000630 .000700 . 000780 . 000850 .000945 . 001030 .001130 .001240 .001370 . 001495 .001580 .001825 .002040 . 002375 Inch. 0. . 000050 . 000050 . O0OO5S .000055 . 000065 . 00005S . 000055 . 000055 . 000060 . 000070 . 000060 . 000070 . 000080 .000070 .000095 .000085 . 000100 . OOOllO .000130 .000125 . 000085 .000245 . 000215 .000335 Inch. 0. Inxh. 0. Initial load. Tensile strength. 0. . 000030 . 000030 .000050 .000020 .000080 .oooosb .000115 .000035 .000180 .000065 .000260 .000080 .000395 .000135 .000640 .000880 . 000245 .000240 Fractured 6" from neck. Appearance, uniform granular. Specific gravity, 7.2926. Hardness, 14.73. 244 12-INCH B. L. RIFLED MOBTABS. No. 3985. Marks, i^^^bV^ Length of stem, 23". Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 20"- Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. Suooeasive permanent set. Bemarks. Total. Per square iacti. Pounds. 1,000 2,000 J.O0O 4,000 5,000 6,000 7,000 8,000 9,000 10,000 11,000 12,000 13,000 14,000 15,000 16,000 17,000 18,000 19,000 20,000 21, 000 22, 000 23,000 24,000 25, 000 27,220 Pounds. 1,000 2,000 3,000 ' 4,000 5,000 6,000 7,000 8,000 9,000 10,000 11, 000 12,000 13,000 14,000 16, 000 16, 000 17, 000 18, 000 , 19,000 20, 000 21, 000 22, 000 23, 000 24,000 25, 000 27, 220 Inch. 0. .000050 . 000100 . 000150 .000200 . 000250 . 000305 .000360 .000430 . 000490 .000550 . 000615 .000690 .000760 . 000845 . 000930 .001010 .001110 . 001230 .001340 .001490 . 001640 .001850 . 002055 .002350 Inch. 0. .600050 . 000050 .000050. . 000050 . 000050 .000055. . 000055 .000070 . 000060 .000060 . 000065 . 000075 . 000070 .000085 .O0OOS5 . 000080 .000100 . 000120 . 000 110 .000150 . 000150 .000210 . 0002U5' .000205 Inch. 0. Inch. 0. Initial load. Tensile strength. 0. .000035 .000035 . 000050 .000015 . 000085 . 000035 .000110 . 000025 . 000180 .000070 . 000255 .000075 .000405 .oooioo . 000650 .000860 . 666245 .000210" Fractured 5^" from neck. Appearance, uniform granular. TENACITY SPECIMENS. General marks, 12 M E13 T E2. No.ot teat. Additional marlcs. Diameter. Sectional area. Tensile strength; , Specific gravity. Hardness. Total. Per square inch. 3099 3100 3101 3102 3103 3104 BT3I BT4O BTjM BT5I B T, BT,M Inches. 1.129 1.129 1.129 1.129 1.120 1.129 Sq. inch, 1.00 1.00 1.00 1.00 1.00 1.00 Pounds. 31,490 33, 710 32, 080 33, 500 32,610 33, 430 Pounds. 31,490 33,710 32, 980 33, 500 32, 610 33, 430 7. 2992 7. 2891 7. 2983 14.98 16.06 14.98 7. 3017 15.35 12-INCH B. L. RIFLED MOKTAES. No. 833. 245 . Marks, ''%\^«» Length, 12". Diameter, 1".129, Sectional area, 1 square inch. Gauged length, 10". Applied loads, i Compres- sion per inca. Successive oompres- slon per iuoh. Permanent set. Successivo permanent ' set. Eemarks. Total. Per square inoh. Founde. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9.000 10, 000 11,000 12, 000 13, 000 14,000 15, 000 16,000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24,000 2.S, 000 26, 000 27,000 28,000 29, 000 30,000 31, 000 32, 000 33, 000 34, 000 35, 000 36, 000 37,000 38,000 39, 000 40, 000 52, 200 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20,000 21, 000 22,000 23,000 24,000 25, OOO 26, 000 27,000 28, 000 29,000 30,000 81,000 32, 000 33, 000 34,000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 52, 200 Inch. 0. .00005 .00010- .00015 .00020 .00026 .00031 .00037 .00042 .00048 .00053 . 00058 .00063 .00070 .00077 .00083 .00089 . 00094 . 00101 .00108 . 00114 .00120 .00127 .00133 .00141 .00150 .00159 .00171 • .00182 . 00192 .00208 . 00222 .00242 .00263 . 00287 . 00317 .p0346 .00383 . 00428 . .00490 Inch. 0. . O0005 .00005 . 00005 .00005 . 00006 . 06005 . 00006 .00005 .00006 . 00005 . 00005 . 00005 .00007 .00007 -.00006 .00006 . OOOOS . 00007 .00007 . 00006 . 00006 . 00007 .00006 . 00008 .00009 . O0OO9 . 00012 . OOOU . 00010 . 00016 . 00014 .00020 . 00021 . 00024 . 00030 . 00028 . 00028 . 00045 .00062 Inch. 0. Inch. 0. Initial load. CTltimate strength. 0. .00005 . 00005 ' .00009 . 00004 .00014 . 0OOO5 . 00025 . OOOU . 00049 .00024 .00119 . 00070 ""■■\ . 00286 .00167 Failed by triple flexure. 246 12-INCH B. L. RIFLED MORTARS. No. 834. Marks 12 MRaTE, Length, 10". Diameter, 1".129. Sectional area, 1 square Jnch. Gauged length, 5". Applied loads. Compres- sion per inch. Successive compres- , sionper incn Permanent set. Snoeesaive permanent set. Bemarlcs. ' - Total. Per square inch. Founds. 1,000 2,000 3,000 i, 000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12,000 13, 000 14, 000 15,000 16, 000 17, COO 18, OOO 19, 000 20, 000 21, 000 22,000 23,000 24,000 25, 000 26, 000 27,000 28, 000 29, 000 30, 000 31,000 32,000 , 33, 000 34,000 35, 000 36, 000 37, 090 38, 000 39, 000 40, 000 62, 600 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 ' 19, 000 ■ 20, 000 21, 000 22, 000 23, 900 24, 000 25, OUO 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 62, 600 Inch. 0. . 00U06 .00012 . 00018 . 00022 . 00028 .00032 . 00038 .00044 . 00050 .00054 . 00060 . 00068 . 00072 . 00078 .00084 . 00090 . 00096 . 00102 .00110 . 00116 . 00122 . 00126 . 00134 . 00144 .00154 .00158 . 00168 . 00178 .00192 .00208 .00226 .00244 . 00270 . 00294 . 00326 .00360 . 00390 .00418 .00486 Inch. 0. . 00006 . 00006 . 00006 . 00001 . 00006 . 00004 . 00006 . OOO06 .00006 .00004 . 00006 .00008 . 00004 .00006 . 00006 . 00006 . 00006 . 00006 .00008 . 00006 .OOOOS .00004 . 00008 .00010 . 00010 .00004 . 00010 . 00010 . 00014 . 00016 . 00018 . 00018 . 00026 . 00024 .00032 . 00034 . 00030 .00028 . 00068 Inch. 0. Inch. 0. Initial load. Ultimate strength. .00002 . 00002 .00006 .00004 .. . 00010 . 00004 . 00018 . 00008. . 00024 .00006 . 00050 . 00026 . 00120 .00070 .00286 .00166 Failed by triple flexure. 12-inch b. l. rifled mortars. Oast-Ieon Body, No. 14. 247 No. 3990. Diameter, l".i29. Sectional area, 1 square inch. Gauged length, 20". Applied loads. SaccesBive elongation per inch. Permanent Bet. Successive permanent set. Bemorks. Totaa. Per sqtiare inch. per inoh. Pounds. 1,000 2,000 3,000 4,000 6,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12,000 13,000 14,000 16, 000 16, 000 17,000 18,000 19, 000 20, 000 51,000 • 22,000 23, 000 24,000 26,0^0 «1, 110 Pounde. 1,000 2,000 3,000 4,000 6,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, OUO 14, 000 15, 000 16, 000 17, 000 18, QOO 19,000 20, 000 21, 000 22,000 23, 000 24,000 25,000 31,110 Inch. 0. .000050 .OOOIOO . 000150 .000200 . 000250 .000300 . 000360 .000400 .000460 .000500 . 000560 .000635 .000690 . 000750 .000820 .000885 .000970 ; 001050 .001140 .001210 .001310 .001436 .001636 .001700 Inch. 0. .000050 .000050 .000050 . 000050 .000050 . 000050 .000050 . 000050 .000050 .000050 .000060 . 000075 .000065 . 000060 .000070 .X)00065 .000085 .000080 . 000090 .000070 .000100 .000126 . OOOIOO .000165 Inch, 0. Inch. 0. Initial load. Tensile strengtl. 0. .000006 .000005 . 000025 . 000020 . 000036 .000010 . 000065 .000030 . 000085 .000020 . 000135 .000060 . 000)90 .606655 .000300 .000385 . 000110 . 000085 Fractured 2".75 from neck. Appearance, uniform granular. Specific gravity, 7.2942. Hardness, 17.26. 248 12-INCH B. L. RIFLED MOETAKS. Marks,, i2MB,,^TE, Diameter, X".129. Sectional area, 1 square inch. Gauged length, 20". So. 3991. Applied loads. JBlongation perlncli. Successive elongation per inch. Permanent set. Successive permanent set. Eemarks. Total. Per sgnare iDCh. pounds. 1,000 ' '2, 000 . 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14,000 15,000 16, 000 17,000 18, 000 19,000 20, 000 21, 000 22,000 23, 000 24, OUO 25, 000 30,020 Pounds. 1,000 2,000 B,00O 4,000 5,000' 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14,000 13,000 16, 000 17,000 18, 000 19,000 20,000 21, 000 22, 000 23, 000 24, 000 25, 000 30, 020 Inch. 0. .000050 .000100 .000150 .000200 . 000250 .000300 ,000355 .000410 .000465 .000515 .000585 .01,0645 . 000703 .000760 . 000835 .000910 . 000990 .001060 .001150 .001245 .001843 . 001453 .001583 .001733 Inch. 0. . 000050 .000050 . 000050 .000060 . 000050 .000050 .000055 .000035 .000055 . 000050 .000070 . 000060 . 000060 . 000055 . 000075 .000075 . 000080 .000070 . 000090 . 000093 .000100 . 000110 .000130 .000150 Inch. 0. Inch. 0. Initial load. Tensile strengtli. 0. .000035 .000035 . 000040 . 000005 .000055 .000015 .000085 . 000030 .000110 .606625 . 000163 . 666645 . 000240 .000085 .000333 . 000415 . 000095 . 000080 Fractured 3".5 from neck. , Appearance, uniform granular. TENACITY SPECIMENS. General marks, 12 M Ku T Ei Ifcof test. Additional marks. Diameter. Sectional area. Tensile strength. Specific gravity. Hardness. Total. Per inch. 8114 3115 3116 8117 MTal MTjO MT5M MTjOX Inches. 1.129 1.129 1.129 1.129 Sq. inches. 1.00 1.00 1.00 1.00 Pounds. 36,420 34, 190 32,400 33,720 Pounds. 36, 420 84,190 82,400 83,720 7; 3125 7. 3024 7.3169 18.58 16.73 17.08 Appearance of fractures, uniform gi-anulair. 12-lNCH B. L. Elf LED MORTAES. 249 No. 836. Marks, 12 ME^TB. Length, 12".' Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 10". Applied loads. Total. Per square Inoa. Compres- sion per incu. SnGceseive compres- sion per incn. Permanent set. Sucoessive permanent set. Bemarks. Powndg. 1, 000 2,000 3,000 4, 000 5,000 6,000 7, 000 8,000 9,000 10, 000 11,000 12, 000 13, 000 14, 000 15, 000 16, 000 17, OOO 18, 000 19, 000 20, 000 21,000 22, 000 23, 000 24, 000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31,000 32, 000 33, OOO 34, 000 35, 000 36, 000 37, 000 38, OOO 39, 000 40,000 57, 910 Pownds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, OOO 11, 000 12,000 13, 000 14, 000 15, 000 16,600 17, OOO 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24, 000 25, 000 26, 000 27, 000 26, 000 29,000 30. 000 3r, 000 32, OOO 33, 000 34,000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 67, 910 Inch. ■ 0. . 00005 . 00010 . 0C014 . 00020 . 00024 . 00030 . 00035 . 00041 .00046 . 00051 . 00057 . 00062 . 00068 , 00073 . 00079 . 00085 ' . 00090 . 00095 . 00101 . 00108 .00113 . ooipo . 00126 . 00131 . 00139 . 00147 .00153 . 00159 . 00167 .00175 . 00183 . 00192 . 00204 . 00217 .00230 . 00241 . 00261 . 00281 . 00308 Inch. 0. . OO005 . 00005 .00004 . 00006 . 00004 . 00006 . 00005 . 00006 .00005 .00005 . 00006 . 00005 . 00006 . O00U5 . O0O06 .00006 . 00005 . 00005 . 00006 . 00007 . 00005 . 00007 .00006 . 00005 . 00008 . 00008 .00006 . OOOOG . 00008 . 00008 .00008 .00009 . 00012 .00013 . 00013 . 00011 . 00020 .00020 . 00027 Inch. Inch. Initial load. . 00003 . 00003 . 00009 . 00006 . 00012 .00003 . 00030 . 00010 .00052 . 00022 . 00066 Cntimate strength. Failed by triple flexure. 250 12-INCH B. L. RIFLED MOETAES. No. 3988. 12 M Eu T Ej Mar)£S, B T, Length of stem, 23". Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 20". Applied loads. Total. Per square inch. Elongation per inch. SnccesslTe elongation per mcb. Permanent set. Snccessire permanent set. Bemarks. Pounds. 1,000 2, 000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13,000 U, 000 15, 000 10, 000 17,000 18,000 19, 000 20, 000 21, 000 22,000 23,000 24,000 25,000 31,410 Founds. 1,000 2,000 3,000 4,000 5,000 «,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16,000 17,000 18, 000 19,000 20, 000 21,000 22, 000 23, 000 24,000 25,000 31,410 Inch. 0. . 000060 . 000110 . 0001$0 .000210 . 000260 . 000320 . 000380 . 000440 . 000500 . 000580 . 000630 . 000700 . 000765 . 000830 . 000920 .001010 . 001105 . 001215 . 001340 . 001485 . 001635 . 001835 . 002050 . 002340 Inch. 0. . 000060 . 000050 . 000050 . 000050 . 000050 . 000060 .000060 .000060 . 000060 . 000060 . 000070 . 000070 . 000065 .000065 . 000090 . 000090 . 000095 . 000110 . 000125 . 000145 . 000160 . 000200 .000215 .000290 Inch. .000660 . 000865 Inch. 0. 0. . 000005 . 000005 . 000035 . 000030 . 000050 0000015 .000070 .000020 . OOOUO . 000040 . 000160 . 000050 .000260 .000100 .000405 .000145 Initial load. . 000255 . 000205 Tensile strength. Fractured 7".5 from neck. Appearance, uniform granular Specific gravity, 7.3058. Hardness, 15.06. 12-INCH B. L. EIFLED MOETAES, 251 No. 3989. Marks, ^^^^i^f^ Length of stem, 23". Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 20". Applied loads. Elongation per incli. SuooPBSive elongation per inch. Permanent set. Snccessire permanent , set. Eemarks. Total. Per aqnare incn. Pownda, 1,000 2, 000 3,000 -4,000 6,000 6,000 7,000 8,000 9,000 - 10,000 11,000 12, 000 13, 000 14, 000 15,000 16, 000 17,000 18, 000 19, 000 20, 000 21,000 22, 000 23,000 24,000 2S, 000 28, 100 Pounds. 1,000 2,000 3, 000 4,000 6,000 6,000 7,000 8,000 9,000 10,000 11,000 12,000 13, 000 14,000 16, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21,000 22,000 23, 000 24,000 25, 000 28, 100 Inch. 0. . 000050 . 000100 . 000160 .000200 .000255 . 000315 .000375 .000430 .000490 . 000650 .000615 . 000685 .000750 .000836 .000910 . 001000 . OOllOO .001230 . 001340 .001485 . 001685 .001845 .002105 .002400 Inch. 0. .000050 . 000050 . 000050 .000050 . 000065 . 000060 . 000060 .000055 . 000060 .000060 . 000065 .000070 . 000065 .000085 . .000076 .000090 .000100 . 000130 . 000110 . 000145 . 000200 . 000160 . O0O26O . 000295 Inch. 0. Inch. 0. Initial load. Tensile strength. 0. .000025 . 000025 .000040 .000015 .000065 . 000025 .000105 . 000040 .000165 . 000060 . 000260 .000095 . 000450 .000190 .000710 . 000930 .000260 . 000220 Fractured 6" .5 from neck. Appearance,Tiniform granular. TENACITY SPECIMENS. General marks, 12 M E^ T Ej. No. of test. Additional marks. Diameter. Sectional area. i Tensile strength. Specific gravity. Hardness. Total. Per square inch. 3105 3106 3107 8108 3109 3U3 BTjI BT4O BT5M BLsI BLjO BLgM Inches. 1.129 1.129 1.129 1.129 1.129 1.129 8q. inch. 1.00 1.00 1.00 1.00 1.00 1.00 Pounds. 34, 310 33, 120 33, 710 33, 200 33, 580 33, 970 Pounds. 34, 310 33, 120 33, 710 33, 200 33, 580 33,970 7.3147 7.3132 7.3146 15.76 15.20 15.13 Appearance of fractures, uniform granular. 252 12-INCH B. L. RIFLED MORTARS. No. 837. Marks, 12 \«^^T«» Length, 12". ' Diameter, 1".129, Sectional area, 1 square inch, gauged length, 10". Applied loads. Compres- siou per inch. SncoeasiTe compres- sion per inch. Permanent set. Sncceasive permanent set. Bemarks. Total. Per aqtiare inch. Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 . 9, 000 10, 000 11,000 12, 000 13, 000 14,000 16, 000 16, OOO 17, OOO 18, OOO 19, 000 20, 000 21, 000 22, 000 2a(ooo 24, 000 26,000 26,000 27, 000 28,000 29, 000 30, 000 31,000 32, 000 33, OQO 34,000 35, 000 36, 000 37,000 38, 000 39, 000 40, 000 61, 660 Pounds. 1,000 2,000 ^ 3,000 4,000 6,000 6,000 / 7, 000 8,000 9,000 10,000 11, 000 12, 000 13,000 14, 000 15, 000 16, 000 17, 000 18,000 ' 19, 000 20, 000 21, 000 22, 000 23, 000 24,000 26, 000 26, 000 27,000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 34,000 85, 000 36, 000 37, 000 38, 000 39,000 40, 000 61,660 Inch. 0. . 00006 .00011 .00016 . 00021 .00026 . 00031 .00037 . 00042 .00047 . 00052 . 00057 . 00062 . 00068 .01)074 .00080 .00085 .00091 .00098 . 00106 . 00112 . 00118 .00123 .00130 .00138 .00148 .00156 .00166 . 00178 .00191 .00208 .00221 .00241 . 00262 . 00292 . 00331 .00361 . 00395 . 00442 .00510 Ineh. 0. . . O0006 .00006 . 00005 . 00005 . 00005 . O0005 .00006 .00005 . 00005 . 00005 .00005 . 001 05 . 00006 . 00006 . 00006 . OOOOS .00006 . 00007 . 00008 . 00006 . 00006 .00006 . 00007 .00008 .00010 .00008 . 00010 . 00012 .00013 . 00017 . 00013 . 00020 .00021 . O0030 . 00039 .00030 . 00034 . 00047 .00068 Ineh. 0. ■ Ineh. 0. Initial load. Ultimate strength. . 00001 .00001 . 00005 .00004 . 00009 . 60004 .00012 .00003 . 00021 .00009 . 00050 .00021 - . 00130 . 00080 ^ .00311 .00181 Failed by triple flexure. 12-IKCH B. L. RIFLED MOETAES. 253 Marks, 12 J^^K^K-" Length, 10"'. '° Diameter, 1".129. Sectional area, 1 sqi^are inch. Gauged length, 5". No. 838. Applied loads. Compres- siou per incB. Successive compres- sion per Inch. Permanent set. SnooBBsive permanent ' set. Kemarks. Total Per sqaaTO inch. Powndg, 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 ai,ooo 12,000 13,000 14,000 15, 000 16, 000 17,000 18,000 19,000 20, 000 21,000 22, 000 23,000 24,000 25, 000 26,000 27, 000 28, 000 20, 000 30, 000 31, 000 32,000 33, 000 34,000 35, 000 36,000 < 37, 000 38, 000 39,000 40, goo 60,800 Townda. 1,000 2,000 3,000 6,000 5,000 6, 000- 7,000 '8,000 9,000 10, 000 11,000 12, 000 13,000 14,000 14, 000 16, 000 17,000 18,000 19,000 20,000 21,000 22i000 23.000 ^24,000 25, 000 26, 000 27, 000 28, 000 29,000 80, 000 31, 000 32, 000 33, 000 34,000 ' 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 GO, 800 Inch, 0. .00004 . 00010 .00014 . 00018 .00022 .00028 .00032 . O0036 .00042 .00050 . 00054 .00060 - . 00006 . 00072 . 00078 .00084 , 00090 . 00096 . 00102 . 00106 .00114 . 00120 .00130 .00140 .00148 . 00168 .00168 .00180 . 00194 .00212 . 00226 .00254 . 00276 . 00310 . 00340 .00380 . 00416 . 00478 .00520 Inch. 0. .00004 . 00006 .00004 . 00004 .00004 . 00O06 . 00004 . 00004 .00006) . 00008 -.00004 .lOOOOO . 00006 " . 00006 . 00004 . 00008 . 00006 . 00006 .00006 . 00004 . 00008 .00000 . OOUIO . 00010 .00008 .00010 .00010 .00012 .00014 .00018 . 00014 .00028 . 00022 .00034 . 00030 , .00040 ' . 00036 . OO062 . 00042 Iiieh. 0. Inch. 0. Initial load. ' ' Ultimate strength. 0. 0. .... . . . ooooo .00006 . 00012 .00006 . 00022 .00010 1 . 00050 .00028 .00140 .00090 . 00320 .00180 Failed by triple flexure. 254 t2-inch b. l. rifled moetabs. Oast-Ieon Body, No. 16. No. 4034. Marks, ^^ Vif ' Length of stem, 23". Diameter, 1".129. Sectional area, 1 square inch. Ganged length, 20". Applied loada. Elongation per inch.' Suoceasive elongation per inch. Permanent set. Snccessive permanent set. Remarks. Total. [Per sqnare inch. Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20,000 21, 000 23, 000 23, 000 24,000 25, 000 29, 310 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, OOO 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24, 000 25, 000 29, 310 Inch. 0. . 000050 . 000100 .000150 .000200 . 000250 .000300, . 000850 . 000400 . 000445 . 000490 . 000545 .000605 . 000670 .000745 . 000815 . 000875 .000960 .001045 . 001145 .001245 . 001345 . 001470 . 001620 . 001790 Inch. 0. .000060 . 000050 . 000050 .000050 . 000050 .000060 . 000050 . 000050 .000045 . 000045 . 000055 . OOOOGO . 000065 .000075 .000070 . 000060 .000085 . 000085 . 000100 . 000100 .000100 .000125 . 000150 . 000170 Inch. 0. Inch. 0. Initial load. Tensile strength. 0. ^ 0. 0. .000015 .000015 . 000045 . 000030 . 000090 . 000045 .000145 . 000055 .000220 ' .000075 . 000345 .000450 . 000125 . 000105 Fractured 2" from neck. Appearance, granular with dark sp'ots. Specific gravity, 7.3149. Hardness, 15.75. 12-INCH B. X. RIFLED MOKTAES. 255 No. 4035. Length of stem, 23". Diameter, 1".129, Sectional area, 1 square inch. Gauged length, 20". Applied loads. Successive elonsatiou perlnch. Permanent set. Successive permanent set Kemarks. ' Total. Per square Inch. per inch. Pounds. - 1,000 2,000 3,000 4,000 6,000 6, 000 - 7,000 8,000 9,000 10,000 11,000 12, 000 13,000 14, 000 15,000 ., 16, 000 17, 000 18,000 19, 000 20, 000 21, 000 ■ 22, 000 23, 000 24, 000 25,000 28,800 Pounds. 1,000 2,000 3,000 4,000 5,000 6, 000 ^ 7, 000 8,000 - 9,000 10, 000 11, 000 12,000 13,000 14,000 15,000 16, 000 17, 000 18,000 19, 000 20,000 21, 000 22, 000 23,000 24, 000 25,000 28, 800 Inch. 0. .000045 . 000085 . 000140 . 000180 . 000220 .000265 .000315 .000365 .000415 . 000460 .000505 .000550 .000600 .000670 .000740 .000800 . 000885 .000950 . 001040 . 001135 .001235 .001335 . 001450 .001695 Inch. 0. . 000046 . 000040 . 000055 .000040 . 000040 . 000045 . OOCOSO . 000050 . 000050 .000045 . 000045 .000045 . 000050 . 000070 . 000070 .000060 . 000085 , 000065 . 000090 . 000096 .000100 .000100 .000115 . 000145 Inch. 0. Inch, 0. Initial load. Tensile strength. 0. 0. . 000005 . 000005 . 000025 .000020 .000040 .000016 .000080 .000040 . 000130 . 000050 .000190 . 000060 . 000290 . 000370 . 000100 .000080 Fractured 2".75 from neck. Appearance, granular with dark spots. TENACITY SPECIMENS. General marks, 12 M Ei6 T Ei iir6.of test. Additional marks. Diameter. Sectional area. Tensile strength. Specific gravity. Hardness. . Total. Per square inch. 3132 3133 S134 3135 MTal MTiO MTsM MTsOX Inches. 1.129 1.129 1.129 1.129 Sq. inch. 1.00 1.00 1.00 1.00 Pounds. 36, 680 31, 170 36,220 33, 490 Pounds. 35,680 31, 170 36,220 33. 490 7.3397 7. 3378 • 7.3699 17.89 16.91 17.62 Appearance of fractures, uniform granular. 256 12-mCH B. L. RIFLED MOETAES. No. 844. Marks, ^2MK^TK. Length, 12". ' Diameter, 1".129, , Sectional area, 1 square inch. Gauged length, 10". Applied loads. Compres- sion per incn. ■ Saccessiye compres- sion, per inch. Permanent set. Sucoessire permanent set. Semarks. Total. Per square men. P(mnd»i 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000 11, 000 12, 000 13,000 14,000 15, 000 16, 000 17, 000 18,000 19, 000 20, 000 21,000 22, 000 23,000 24, 000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 32,000 33, 000 34,000 35, 000 36, 000 37,000 38,000 39, 000 40, 000 55, 620 FoundB. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11,000 12,000 13, 000 14,000 15, 000 16, 000 17, 000 18,000 19, 000 20, OOO 21,000 22, 000 23, 000 24, 000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31,000 32, 000 33,000 34, 000 36, 000 :)6, ono 37, 000 38,000 39, OOO 40, 000 55, 620 Inch. 0. . 00004 .00009 . 00012 .00017 .00020 .00025 . 00030 .00036 . 00041 .00046. .00051 .00056 . 00061 . 00067 . 00074 . 00080 . 00085 .00090 . 00097 .00102 . 00109 . 00115 ,00120 . 00127 . 00133 . 00140 .00148 .00156 .00166 . 00176 . 00185 . 00106 . 00210 .00222 . 00240 .00260 .00280 . 00304 . 00342 Imh. 0. .00004 .00005 . .00003 .00005 .00003 . 00005 . 00005 .00006 .00005 . 00005 .00005 .00005 .00005 . 00006 . 00007 .00006 . 00005 . 00005 .00007 . 00005 . 00007 .00006 .00005 . 00007 . OO0O6 .00007 .00008 .00008 .00010 .00010 .00009 .00011 . 00014 .00012 . 00018 . 00020 . 00020 .00024 .00038 0. Inch. 0. Initial load. Ultimate strength. i 0. ' 0. ' . 00006 .00006 .00010 .00004 .00017 .00007 "'' .00030 . 00013 .00061 .00031 . 0O152 .00091 . Failed by triple flexure. 12-INCH B. L. RIFLED MORTAES. 257 No. 4049. Marks, 12 Mii^,_TR, Length of stem, 23". Diameter, l".i29. Sectional area, 1 square inch. Gauged length, 20". ■ Applied loads. Elongation per Inch. Saocesaive elongation per inch. Permanent set. . Successive permanent set. Eemarl^s. Total. Ppr square iacli. Pounds. 1,000 2,000 3,000 4,000 6,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12,000 13, 000 14, 000 15,000 16,000 17, 000 18, 000 19, 000 20, 000 21,000 22, 000 23, 000 24,000 24, 900 Poimdt. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000 U, 000 12, 000 13, 000 . 14. 000 15, 000 16, 000- 17, 000 18, 000 19, 000 20, 000 21, 000 '. 22,000 23, 000 , 24, 000 ' 24, 900 Inch. 0. .000050 .000100 .000150 . 000200 . 000255 . 000320 .000380 .000430 .000480 . 000550 .000606 . 000675 . 000750 .000825 . 000900 .000980 .001070 . 001175 .001290 . 001390 . 001660 .001730 . 001900 Inch. 0. . 000050 . 000050 , 000050 .000050 . 000055 .000065 . 000060 . 000050 . 000050 .000070 .000055 . 000070 .000075 . 000076 .000075 . 000080 .«ooogo . 000105 . 000115 .000100 .•000170 , .000170 . 000170 Inch. 0. Inch. 0. Initial load. Tensile strength. 0. 1 .000030 . 000030 . 000045 .000015 . 000076 . 000030 . 000105 . 000030 . 000166 .000060 .000255 .000090 . 000385 .000130 .000630 .000245 Fractured at middle of stem. Appearance, coarse granular with stellar spots on one side, finer granular at the other. Specific gravity, 7.3209. Hardness, 14.69. H. Ex, 165 17 258 12-INCH B. h. EIFLED MORTAKS. JTo. 4050. Marks, 12 ME^^TE, Length of stem, 23". Diameter, i".129. Sectional area, 1 square incli. Gauged length, 20". Applied loads. Elongation per incli. Sacoessive elongation per inch. Permanent set. Saccessive permanent set. Bemarks. Total. Per square inch. J'ounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11,000 12,000 13, 000 14,000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24, 000 28, 000 30, 210 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11,000 ■ 12, 000 13, OOO 14,000 15, 000 16,000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23,000 24,000 25, 000 30,210 Inch, 0. . 000040 . 000090 . 000140 . 000190 . 000240 . 000295 .000350 . 000405 . 000460 . 000515 . 000585 . 000645 . 000710 .000790 .000865 .000950 . 001050 . 001150 . 001200 .001400 . 001525 .001685 . 001875 . .002100 Inch. 0. .000040 . 000050 .000050 . 000050 . 000050 . 000055 . 000055 .000055 . 000055 . U00055 . 000070 . 000060 . 000065 . 000080 .000075 . 000035 . 000100 . 000100 .000110 .000110 .000125 . 000160 .00M90 - . 000225 Inch. 0. Inch. 0. Initial load. Tensile strength. 0. " . 000010 .000010 . 000035 .000025 .000050 .000015 . 000090 . 000040 .000150 . C00060 . 000240 .000090 .000370 , .000130 .000600 . 000760 • .000230 . 000160 Fractured lOJ" from neck. Appearance, medium coarse granular, with coarser belt across one side of surface. TENACITY SPECIMENS. General marks, 12 M Eis T Ej. No. of test. Additional marks. Diameter. Sectional area. _ Tensile strength. Specific gravity. Hardness. Total. Per square inch. . 3126 3127 3128 3129 3130 3131 BT3I BTjO BTbM BLsI BL7O bl,m: Inch. 1. 129 ' 1.129 1.129 1.129 1.129 1.129 Sq. imh. 1.00 1.00 1.00 1.00 1.00 1.00 PoiMde. 32, 9!)0 34, 020 31,510 34, 070 34, 730 37,640 Pomids. 32, 990 34,020 31, 510 34, 070' '34,730 37, OlO 7.3140 7 3141 7.3314 7. 3398 7. 3294 7. 3332 14.12 14.12 15.06 14.69 14.98 15.20 12-lNCH B. L. RIFLED MOKTAKS. 259 No. 842, Marks, >^%\'^^ Length, 12". " Diameter, 1";] 29. Sectional area, 1 square incb. Gauged length, 10". Applied loads. Compres- sion per ' inch. SHOoesslve compres- sion per incn. Permanent ■Bet. Snccesslve permanent set. Hemarks. Total. Per square incn. ■Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11,000 12, 000 13, 000 14, 000 15, 000 16,000 17, 000 18, 000 19, 000 20, 000 21,000 22, 000 23,fl00 24,000 25, 000 26,000 27, 000 28, 000 ■ 29,000 30, 000 31, 000 32, 000 33, 000 34, 000 35, 000 •36, 000 37, 000 38, OHO 39,000 40, 000 52, 080 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9.000 10, 000 11,000 12,000 13,000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24, 000 25,000 26, 000 27, 000 28, 000 29, 000 30, 000 31,000 32, 000 33, 000 34,000 35, 000 36, 000 37, 000 38,000 39, 000 40, 000 52, 080 Inch. 0. .00005 .00010- .00016 . 00020 . 00024 . 00029 .00034 . 00040 .00045 . 00051 .00056 . 0006 L .00066 . 00071 . 00077 .00082 .00G88 - .00095 .00101 .00108 . 00113 . 00120 .00128 . 00137 . 00148 . O0158 .00168 . 00179 .00192 .00212 .00228 .00248 .00275 .00310 . 00354 . 00390 .00423 .00468 . 00520 • Inch. 0. . 00005 . 00005 . 00005 .00005 . 00004 . 00005 .00005 . 00006 . 00005 . 00006 .00005 . 00005 .00005 . 00005 . 00006 .00005 . 00006 .00007 . 00006 . 00007 . 00005 . 00007 .00008 . 00009 .00011 . 00010 . 00010 .00011 .00013 _ .00020 . 00016 .00020 . 00027 . 00035, .00044 .00036 . 00033 .00045 . 00052 Inch. 0. Inch. 0. Initial load. Ultimate strength. ^ . 00001 .00001 . 00002 .00001 . 00006 . 00004 .00011 . 00005 . 00022 . 00011 .00054 . 00032 ■ . 00143 .00089 .00323 .00179 - Failed by triple flexdre. 260 12-IKCH B. L RIFLED MORTARS. No. 843. Marks, 12 MR^o^TE, Length, 10". '° Diameter, 1".129. Sectional ai%a, 1 square incL. Gauged length, 5". Applied loada. Compres- sion per inch. Successive compres- sion per" incli. Permanent set. Successive permanent set. Eemarks. Total. Per square lltCJl. Pounds. ' 1,000 2,000 '.. 3,000- 4,000 ' 5,000 ■r 6,000 - 7,000 . 8,000 9, 000 10, 000 11,000 12, 000 . 13, 00.0 14,000 15, 000 16,000 17, 000 -18, 000 19, 000 20, 000 21, OOO 22, 000 23, 000 24, 000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 34, 000 35, 000 36, 000 37, ogo 38, 000 39, 000 40, 000 63, 250 Pounds, 1, 000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000 11,000 , 12,000 13, 000 14, 000 15, 000 16, 000 17, 000 18,000 19, OOO 20, 000 21, 000 22, 000 23, 000 24, 000 25, 000 26, 000 27, OOO 28,000 29, 000 30, 000 31, 000 32, 000 33, 000 34,000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 63,250 Inch, ■ 0. . 00006 ,00010 .00016 . 00020 . 00024 . 00028 .00034 . 00040 .000+4 . 00048 . 00062 .00058 .00064 . 00068 ,. 00074 . 00080 .00084 . 00090 . 00096 ' .00100 . 00108 . 00114 . 00120 . 00128 .00140 .00150 . 00100 . 00172 .00184 . 00208 . 00224 .00240 . 00270 .00308 . 00344 , .00378 . 00430 .00476 .00528 Inch. 0. . 00006 . 00004 . 00006 . 00004 .00004 . 00004 . 00006 . 00006 . 00004 , .00004 . 00004 . 00006 . 00006 . 00004 . 00006 . 00006 . 00004 . 00006 . 00006 . 00004 . 00008 . 00006 . 00006 . 00008 .00012 .00010 .00010 .00012 . 00012 . 00024 .00016 . 00022 .00024 . 00038 .00036 . 00034 . 00052 . 00046 . 00052 Inch, 0. Inch. 0. Initialload. Ultimate strength. 0. 0. ■ .00004 . 00004 .00010 . 00006 . 00024 . 00014 . 00050 . 00026 . 00144 .00094 .00370 . 00226 Failed by triple flexure. 12-inch b. l. rifled moetaes, Cast-Iron Body; No. 17. No. 4038. 261 Length of stein, 23". Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 20". Applied loads. Total. ^"Il^^o Elosgation per inch. Snocessive elongation per inch. Permanent set. Successive permanent set. Bemarks. Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 15, 000 14, 000 16, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21,000 22, 000 23, 000 24,000 25, 000 ' 29, 410 Pounds. 1,000 2,000 3^000 4, 000 5, 000 6,000 7, 000 8,000 " 9, OOO 10, 000 11, 000 12, 000 13, 000 14, 000 15, oao 16, 000 17, 000 18, 000 18, 000 20, 000 21, 000 22, 000 23, 000 24.000 25, 000 20, 410 Inch. 0. . 000050 .. 000095 . 000145 . 000193 . 000245 .000295 . 000345 .000395 . 000445 . 000305 . 000555 . 000620 . 000680 . 000750 . 000815 . 000890 . 000975 . 001060 . 00U55 .001280 . 001395 .001540 .001705 .001920 Inch. 0. . 000050 . 000045 . 00U050 . 000050 . 000U50 . 000050 . 000050 . 000050 . 000050 .000060 . 000050 .000065 . 000060 . 000070 . 000065 . 000075 .000085 . 000085 . 000095 . 000125 .000L13 . 000145 .000165 .000215 Inch. . 000490 . 000640 Inch. Initial load. 0. 0. 0. .000030 .000030 .000040 . ooooio .000060 . 000020 .000095 . 000035 . 000140 . 000015 . 000206 . 000065 . 000310 . 000105 . 000180 . 000150 Tensile strengtb. Fractured 7^" from neck. Appearance, granular with dark spots. Specific gravity, 7.3022. Hardness, 14j47. 262 12-lNCH B. L. RIFLED MOETARS. No. 4039. Length of stem, 23". Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 20". Applied loads. Elongation per inch. Sncoessive elou^ution per inch. Permanent set. Successive permanent set. Bemarks. Total. Per sqnare incli. Pounds. 1, 000 2,000 3,000 4, 000 ■5, 000 ,6,000 7,000 ' 8, 000 9,000 10, 000 11,000 12,000 13, 000 -14, 000 15, 000 16, 000 17,600 18, 000 19,000 20,000- I 21, 000 22, 000 ' 23,000 24,000 25, 000 28, 270 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 16, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 .23, 000 24, 000 25, 000 28, 270 Inch. 0. .000045 .000100 . 000115 .000190 . 000240 .000290 . 000340 . 000395 . 000460 . 000603 . 000660 .000620 . 000685 .000750 .000825 . 000890 .000965 . 001060 .001160 . 001;i65 . 001385 . 001320 . 001665 . 001840 ' Inch. 0. . 000045 . 000055 . 000045 . 000045 . 000050 . ff00060 . C00060 . 000055 . 000055 . 000055 . 000055 . 000060 .OOOOOi . 000065 . 000075 . 000065 . 000076 . 000096 . 000090 . 000115 .000120 . 000135 . 000145 . 000175 Inch. 0. Inch. 0. Initial loafl. Tensile strengtli. 0. . 000025 .000025 .000040 .000015 . 000055 . 000015 . 000090 .000035 .000130 .000040 . 000195 .000065 .000290 . 000095 . 000150 .000555 . 000160 . 000100 Fractured 2J" from nect. Appearance, granular with dark spots. TENACITY SPECIMENS. General marks, 12 M En 'T Ei. No. of test. Additional marks. Biameter. Sectional area. Tensile strengtli. Specifio gravity. Hardness. Total. Per sqnare incti. 4397 4398 4309 4400 MTjI MTaO MTjM MTjOX Inches. 1.129 1.129 1.129 1.129 Sq. inch. 1.00 1.00 1.00 1.00 Pounds. 36,310 34, 300 33, 960 84,510 Pounds. 35, 310 34, 300 33,960 34,510 7.3430 7. 3358 7.3292 15.83 14.98 14.90 12-INCH B. L. RIFLED MOKTAfiS. 263 No. 847. Marks, ^2MK^,|p, Length, 12".° Diameter, 1".129. Sectional area, 1 per square inch. Ganged length, 10". Applied loads. Total. Per sqnare inch. Compres- siou per inch. Sncoessive compros- eionper inch. Permanent set. Snccessire permanent set. liemarks. Powids. 1,000 2, 000 - 3,000 4,000 S,000 6,000 7,000 8,000 9,000 10,000 11,000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, OUO 19, 000 20, 000 21, 000 22, 000 23, 000 24,000 25,000 26, 000 27,000 28, 000 29,000 30, 000 31, 000 32, 000 33,000 34, 000 35, 000 36, 000 37,000 38, 000 39,000 40,000 51,980 PovMds. 1,000 2,000 3,000 4,000 S,000 6,000 7,000 8,000 9,000 10, 000 11,*00 12,000 13,000 14,000 16,-000 16, ODO 17, 000 18, 000 19, 000 20, 000 21, 000 22,000 23,000 24,000 25, 000 26,000 27, 000 28, 000 29,000 30, 000 31,000 32, 000 33,000 34,000 35,000 36, 000 37, 000 38, 000 39, 000 '40,000 61,980 Inch. 0. . OO0O3 . 00009 . 00014 . 00019 . 00024 . 00029 . 00034 . 00039 . 00044 .00049 .00054 . 00059 . 00084 . 00070 . 00077 .00082 , 0U0?8 . 00094 . 00100 . 00108 . 00113 . 00120 . 00126 . 00133 . 00142 .00150 . 00158 .00168 . 00180 , .00193 . 00209 .00222 .00243 . 00267 . 00290 .00322 . 00357 .00437 Inch. 0. .00003 . 00006 .00005 .00005 . 00005 . 00005 . 00005 . 00005 . 00005 . 00005 . 00005 . 00005 .00005 .00006 . 00007 . 00005 .00006 . 00006 . ooooe . 00008 . 00005 . 00007 . U0006 . 00007 .00009 . 00008 . 00008 . 00010 . 00012 . 00013 . 00016 . 00013 . 00021 .00024 . 00023 .00032 . 00035 . 00036 .00044 Inch. 0. Iruih, 0. Initial load. . 00001 .00001 . 00008 . 00007 .00012 . 00004 . 00022 .00013 . 00103 . 00000 . 00146 Ultimate strength. Failed by triple flexure. 264 12-INCH B. L. EIPLED MOETAES. No. 4036, Marks, 12 '^/i^^^ I^ength ofstem, 23". Diameter, 1".129. . » Sectional area, 1 square inch. Gauged length, 20". Applied loads. Blongation per inct. Succeasive elonsation per inch. Feijnanent set. Sacceaslve permanent set. Bemaika. Total. Per BQuaxe inch: Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14,000 15,000 16, 000 17, MO 18,000 19, 000 20, 000 21,000 22, 000 23,000 24, OUO 25, 000 28, 210 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13,000 14, 000 15, OOO , 16, 000 ■ 17, 000 18, 000 19, 000 20, 000 21,000 22, 000 23, 000 24, 000 25, OOO 28, 210 Inch. 0. .000050 .000100 . 000150 . 000200 . 000250 .000305 . 000355 . 000425 . 000485 . 000510 . 000610 . 000675 .000740- .900810 . 000905 .000990 .001090 . 001190 . 001325 . 0014S0 ^001640 .001840 ; 002066 . 002360 Inch. 0. .000050 .000050 . 000050 .000050 .000050 . 000055 .000050 . 000070 . 000060 . 000055 .000070 , .000065 . 000065 .000070 .000095 . 000085 . 000 i 00 .000100 . 000135 . 000165 . 000150 ; . 000200 .000225 . 000295 Inch. 0. Inch. 0. Initial load. • Tensile strengtli- 0. .000020 . 000020 . 000045 . 000025 .000070 .000025 . 000120 . 000050 . 000190 . 000070 .000200 .000100 . 000485 . 000195 . 000780 . 000990 . 000275 .000230 Fractured 4J" from neck. Appearance, fine granular, with coarser granulation near circumfer- ence at one side. Specific grayity, 7.3109. Hardness, 13.46. 12-lNCU B. L. RIFLED M0BTAB8. 265 No. 4037. Marks, .12 MEij^TE, Length of stem, 23". Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 20". Applied loads. Elongation per inch. Succeasive elongation penncb. Permanent set. Successive perina'nent set. Bemarka. Total. Per Bqnare Incli. Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, OOO 11, 000 12, OOO 13, 000 14,000 15, 000 16,000 17, 000 18,000 19, 000 20,000 21, 000 22, 000 23,000 24, 000 25,000 29, 530 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13,000 14,000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, OOO 24, 000 25, 000 29,530 JncA. 0. .000030 .000105 . 000155 . 000210 .000200 . 000330 .000390 .000445 .000505 .000570 .000640 .000715 ,000800 . 000885 . 000990 .001080 .001190 . 001335 .001465 . 001675 .001865 . 002065 .002405 . 002740 Inch. 0. .000050 .000055 . 000050 . 00U055 . 000050 .000070 . 000060 .000055 .000060 .000065 . 000070 .000075 . 000085 . 000085 . 000105 .000090 .000110 . 000145 .000130 . 000210 .000190 . 000200 . 000340 .000335 Inch. 0. Inch. 0. Initial load. Tensile strength. 0. . 000040 . 000040 . 000060 .606626 . 660695 , .000035 .000150 .666655 1 .000240 .000090 . 0U0390 T 000150 .000630 .000240 .001015 . 001200 . 000385 . 000245 Fractured 8" from the neck. Appearance, granular, varying in size. TBNAOITT SPECIMENS. General marks, 12 M Ei, T Eu. No. of test. Additional marks. Diameter. Sectional area. Tensile strength. Specific gravity. Hardness. Total. Per squai-e inch.' 4391 4392 4393 4394 4395 4396 BT,I BT4O BTeM BLel BL,0 BLaM Inch. 1. 129 1.129 1.129 1.129 1.129 1.129 Sq. inch. 1.00 1.00 1.00 1.00 1.00 1.00 Pounds. 36, 200 36, 020 ' SI, 310 31, 990 36, 970 34, 930 Poundit. 36, 211O 36,020 34,310 31, 990 36, 970 34, 930 7.3225 7. 3124 7.2860 14.90 15.13 13.99 266 12-INCH B. L. RIFLED MORTAES. No. 845. Marks, i^m^^^jj. Length, 12'^ ' Diameter, 1".129. feectional area, 1 square inch. Gauged length, 10". Applied loads. Compres- sion per'v inch. Successive compres- sion per incD. Permanent set. Saccessive permanent set. Remarks. Total. Per aqnare iacb. Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 U, 000 12, 000 13,000 14, 000 15, 000 16, 000 17, 000 18,000 19, 000 20, 000 21,000 22,000 23, 000 24, 000 25, 000 26,000 27, 000 28, 000 29,000^ 30, 000 31, 000 32,000 33, 000 34, 000 35, 000 36, 000 37, OOO 38, 000 39, 000 40, 000 50, 600 Poundt. 1, 000 2,000 3,000 4,000, 5, 000 6,000 7,000 8,000 9,000 10, 000 11,000 12, 000 . 13, OOO, 14,000 15,000 16,000 17,000 18,000 19, 000 20,000 21, 000 22,000 ' 23,000 24, 000 25,000 26,000 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 34, 000 35,000 36, 000 37, 000 38,000 39, 000 40, 000 50, 600 Inch. 0. .00005 .00010 ."00016 . 00021 . 00026 .00031. .00037 . 00042 .00048 .00052 . 00058 .00085 . 00071 . 00076 ,- .00082 .00089 .00095 . 00101 .00108 . 00115 .00124 .00133 .00112 .00161 .00163 .00176 .00190 .00210 . 00229 .00265 . 00275 . 00305 . 00345 . 00382 .00432 .00476 .00532 .00588 .00648 Inch. 0. .00005 . 00005 - . 00006 .00005 . 00005 .00005 .00006 . 00005 .00006 .00004 .00006 . 00007 Inch. 0. Inch. 0. Initial load, tritimato strerglb. . 00001 . 00001 .00002 .00001 . 00005 . 00006 . 00007 .00006 . 0OO06 . 00007 . 00007 . 00009 . 00009 .00009 .00009 , .00012 . 00013 . 00014 .00020 . 00019 .00026 .00020 . 00030 .00040 .00037 .00050 .00044 . 00056 . 00056 .00060 .00008 . 00006 .00013 .00005 . 00032 .00019 . 00085 - . 00053 . 00209 .00124 .00440 .00231 Failed by triple flexure. 12-INCH B. L. RIFLED MOKTAES, 267 No. 846. Marks 12^ E„TE, Length, 10". Diameter, 1".129. Sectional area, 1 square inch. Gauged lengtfr, 5". Applied loads.' Compres- sion per inch. Successive compres- sion per inch. . FeTmanent set. Snccessiye permanent set. Bemarks. Total. Per sqtiaTe - inch. Pound*. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13,000 14, 000 15, 000 16, 090 17, 000 18, 000 19, 000 20, 000 21,000 22, 000 23,000 24,000 25, OOO 26, OOO 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 34,000 35, 000 36,000 37, 000 38, 000 39,000 40, OOO 60, 520 Fotmdi. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11,000 12, 000 13,000 14, 000 15, 000 10, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24,000 25, OOO 26, OOO 27,000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 34, 000 35,000 36, 000 . 37, 000 " 38, 000 39,000 40, 000 60, 520 Inch. 0, .00004 ,00010 . 00014 . 00020 .00026 . 00030 , 00034 . 00038 . 00042 .00046 . 00052 .00056 .00062 . 00068 . 00074 . 00080 .00086 . 00094 .00100 .00106 .00114 .00122 . 00132 . 00140 .00154 , .00164 .00176 . 00194 .00214 .00246 . 00266 . 00290 . 00328 . 00374 .00416 .00458 . 00500 .00550 . 00616 Inch. 0. . 00004 .00016 . 00004 .00006 . 00006 . 00004 . 00004 . 00004 . 00004 . 00004 .00006 . 00004 .00006 . 00006 . 00006 . 00G06 . 00006 .00008 . 00006 .00006 . 00008 . 00008 ' . 00010 . 00008 . 00014 .00010 . 00012 .00018 .00020 . 00032 .00020 . 00024 .00038 . 00016 . 00042 .00042 .00042 . 00050 . 00066 Inch. 0. Inch. 0. Initial load, tritimate strength. 0. .00002 .00002 .00004 .00002 • .00012 . O0O08 . 00026 .00014 . 00072 . 00046 .00200 .00028 .00414 .00214 . Failed by triple flexure. 268 12-lnch b. l, rifled mortars. Gast-Iron Body, No. 18. No. 4074. Marks, 12 '^^'iTi^' Length of stem, 23". Diameter, 1".129. Sectional area, 1 square inch. Ganged length, 20". ' v.V Applied loads. Elongation per inch. Successive elongation per inch. Perjpanent set. \ Saccessive permanent set. Eemarts. Total. Per square inch. Pounds. 1,000 2,000 3, 000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12,000 13, 000 14, 000 15, 000 16, 000 17,000 18, 000 19,000 20, 000 21,000 22, 000 28, 000 24, 000 25, 000 29, 630 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, OOO 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24, 000 25, 000 29, 630 > Inch. 0. . 000050 . 000100 .000150 .000200 . 000250 . 000300 . 000350 . 000400 .000460 . 000530 .000590 . 0006+5 . 000705 .000785 . 000860 .000935 . OOlOlO .001100 .001190 . 001290 . 001400 . 001540 .001655 .001823 Inch. 0. . 000030 .OOOiao . . 000050 . 000030 . 000050 . 000050 . 000050 .000050 . 000060 . 000070 . 000060 . 000055 . 000060 . 000080 .t)00065 , .000085 ^ .000075 .000090 . 01.0090 .000100 ,000110 . 000140 .000115 . 000170 Inch. 0. Inch. 0. Initial load. Tensile strength. - 0. . 000015 .000015 .000035 .000020 .000050 . 000015 . 000085 . 000035 . 000136 . 000060 .000185 . 000050 . 000260 . 000075 . 000390 ' .000460 .000130 . 000070 Fractured 3" from the neck. Appearance, granular mottled. Specific gravity, 7,2990. Hardness, 16.15. 13-INCH B, L. RIFLED MORTARS. 269 No. 4075. Marks, i^W^^' Length of stem, 23". Diameter, r'.129. Sectional area, 1 square inch. Gauged length, 20". Applied loads. BlongatioD per inoh. Successive olon^a^tion per inch. PermaneDt set. Successive permanent set. Semarks. Total. Per sqnare incn. Pounds. 1,000 2,-000 3,000 4,000 6,000 ,0,000 ' 7, 000 8,000 9,000 10, 000 11,000 12, 000 13,000 14, COO 15,000- 16,000 17, 006 18, 000 19, 000 20,000 21, 000 , 22,000 23, 000 24,000 25, 000 29, 870 Pound*. 1,000 2,000 3,000 4,000 5,000 6,000 7, 000 8,000 9,000 ^ 10,000 11,000 12, 000 13, 000 14, 000 15, 000 16, 000 17,000 18, 000 19, 000 20,000 21,000 22, 000 23, 000 24,000 25, 000 29, 870 Inch. 0. . 000050 .000100 : 000150 . 000105 J 000245 .000295 . 000345 . 000400 . 000460 , 000525 .000680 . 000640 . 000700 - .000765 .000840 . 00U905 .oonoao .001065 .001150 . 001260 . 001350 . 001480 .001630 . 001780 Inch. 0. . 000060 . 000050 . 000050 . 000045 . 000060 . 000060 . 000050 . 000055 . OOOOUO . 0U0065 .000055 . 000060 . 000060 .000005 .000076 . 000066 . 000085 .000075 , .000085 . 000100 .000100 . 000130 .000150 . 000150 Inch. 0. Inoh. «. Initial load. Tensile strength. 0. . 000020 . 000020 .000030 . 000010 . 000055 . 000025 . 000085 .000030 . 000125 . 000040 . 000180 . 000065 .000250 . 000070 . 000386 . 000480 .060135 , 000095 Fractured 3" from the neck. Appearance, granular mottled. TENACITY SPECIMENS. General marks,. 12 M Ru T Ei. 1 ~^ '. No*, of test. Additional marks. Diameter. Sectional area. Tensile strength. SpecifiG gravity. Hardness. Total. Per square inoh. 4407 4408 4409 4410 MT3I MT4O MT5M MTjO Inches. 1.129 1.129 1.129 1.129 Sq. inch. 1.00 1.00 1.00 1.00 Pounds. 33, 990 34, 420 32, 600 35, 170 Pounds. 33, 900 34, 420 32, 600 35, 170 7. 2077 7. 3183 7. 3124 17.81 18.31 17.26 270 12- INCH B, L. KIFLKD MOETAES. No. 850. Length, 12". ' Diameter, 1".129. Sectional area, 1 square incli. Gauged length, 10". Applied loads. Total. Per square incn. Compres- sioD per iaca. Succpssive Gompres- eion per iucli. Permanent sec. SaccessiTe permanent set. Bemarks. Pounds. 1,000 2,000 3,000 4,000 6,000 6,000 7,000 8,000 9,0U0 10, 000 11, 000 12, 000 13, 000 14, obo 15, 000 16, OOU 17, 000 I8, 000 19,000 20, 000 21, 000 22,900 23, 000 24, 000 25, 000 26, 000 27, 000 28,000 29, 000 30,000 31, 000 32,000 33,000 34, 000 35, 000 36, 000 37, 000 38,000 39, 000 40, 000 54, 500 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 , 13,000 • 14,000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21,000 22, 000 23, 000 24, 000 25, 000 26, 000 27,000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 34, 000 35, 000 3U, 000 37, 000 38, 000 39, 000 40,000 54,500 0. .00003 . 00008 .00012 . 00017 . 00022 .,00027 . 00031 . 00037 . 00041 . 00047 . 00053 . 00i)58 . 00063 . 00070 . 00077 . 00082 . 0U088 . 0!)093 . 00098 .00106 .00112 .00118 • .00126 . 00131 .00140 . 00148 . 00156 .00163 .00172 .00183 .00194 .00208 . 00221 . 00238 . 06259 . 00274 . 00301 . 00328 . 00362 Inch. 0. . 00003 . 00005 . 00004 . 00005 . 00005 . 00005 . 00004 . 00006 . 00004 . 00006 . 00006 . 00005 . 00005 . 00007 . 00007 . 00005 . 00006 . 00005 . 00005 . 00008 . 00006 . 00006 . 00008 . 00005 . 00009 .00008 . 00008 . 00007 .00009 . 00011 . 00011 . 00014 .00013 . 00017 . 00021 . 00015 . 00027 .00027 .00034 iTich. Inch. Initial load. . oooos . 00009 . 00036 . 00098 TTltimate strength. Failed by triple flexure. 12-lNCH B. L. RIFLED MORTAKS, 271 No. 4072. Marks, i2m^k^te, Length of stem, 23". Diameter, i".129. Sectional area, 1 square inch. Gauged length, 20". Applied loads. Total Per sqnaie iuco. Elongation per inch. Saccessive elongation per inch. Permanent set. Successive permanent set. Kemarks, Pounds. 1,000 2,000 3,000 1,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 U, 000 15, 000 16,000 17, 000 18, 000 19, 000 - 20, 000 21, 000 22, 000 23, 000 24,-000 23, 000 28,010 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14,000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24, 000 25, 000 28, 010 Inch. .0 . 000050 . 000100 . 000150 . 000200 , .000250 . 000300 . 000355 . 000415 . 000480 .000535 . 000600 . 000665 . 000740 . 000800 . 000885 . 000970 . 001060 .001165 . 001275 . 001390 . 001S40 . 001710 . 001885 .002185 Inch. 0. . 000050 .000050 . 000050 . OOOOSO . 000050 . 000050 . 0C005S .000060 . 000065 ; 000055 . 000065 . 000065 . 000075 . 000060 . 000085 . 000085 .000090 .000105 . 000110 . 000115 .000150 . 000170 . 000175 . 000200 Inch. . 000560 . 000740 Inch. 0. 0. 0. .000015 . 000015 .000040 . 000025 .000060 . 000020 .000090 . 000030 .000150 .000060 . 000240 .000090 . 000360 .000120 luttial load* . 000200 . 000180 'iVnsile strength. Fractured 3" from the neck. Appearance, medium fine granular, with darker and coarser spot at circumference. Specific gravity, 7.2927, Hardness, 14.69. 272 12-INCH B. L. EIFLED MORTARS. No. 4073. Marks, '2^^!f ^= Length of stem, 23". Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 20". Applied loads. Elongation perincli. Successive elongation perincli. Permanent set. Snccessive permanent set. Eemarks. Total. Per square inch. Founds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11,000 12, 000 13, 000 14, 000 15, 000 . 16,000 17, 000 18, 000 ' 19,000 20, 000 21,000 ' 22, OOO 23,000 24, 000 25, 000 27,290 Founds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11,000 12, 000 13, 000 14,000 15, 000 16, 000 17,000 18, 000 19, 000 20, 000 21, 000 22, 000 ■23,000 24, 000 25, 000 27, 290 Inch. 0. .000050 . 000010 . 000160 . 000200 . 000255 .000305 . 0003UO .000420 . 000480 .0C0545 . 000605 . 000670 .000740 . 000810 .000890 . 000970 .001065 .001165 . 001290 . 001420 . 001500 . 001740 . 001925 . 002160 Inch. 0. . 000060 .000050 . C00050 . 000060 . 000055 .000060 . 000055 . 00006C . 000060 . 000065 .000060 . 000065 . 000070 . 000070 . 000080 . 000080 . 000095 .000100 .000125 . 000130 .000140 . 000180 . 000185 , 000235 Inch. 0. Inch. 0. Initial load. Tensile strength. 0. .000030 . 000030 .000040 .000010 .000060 .000020 .000100 . 000040 . 000155 .000035 .000255 . OOOIOO . 000390 .000135 .000620 . 000765 .000230 . 000145 Fractured 11".5 from neck. Appearance, medium fine granulation, with darker and coarser spot at the circumference. TENACITr SPECIMENS. General marks, 12 M il,8 T Ej No. of test. Additional marks. Diameter. Sectional area. Tensile strength. Specific gravity. Hardness. Total. Per square inch. 4401 4402 4403 4401 4405 4406 BT3I ; BT4O BTjM Bt„I BL,0 BLsM Inches. 1.129 1.129 1.129 1.129 1.129 1.129 Sq. inch. I.jOO 1.00 1.00 1.00 1.00 1.00 . Founds. 35, 280 35, 010 31,440 36, 0-20 37, 480 37, 350 Pounds. ' 35,280 35, 010 31, 440 36, 020 37, 480 37, 350 7. 2977 7. 2865 7. 2945 15. 91 ■ 15. 20 15.43 . 12-INCII B. L. RIFLED MOETARS, 273 No. 848. Marks, 12 *^#!1.J^^ Length, 12". " Diameter, 1".129. Sectional area, 1 square inch. Gauged length, W. Applied loads. Total. Per sgaare moll. Compres- Bionper incn. SnooesBive compres- siOQ per inch. Permanent Successive permaneut set. Eemarks. Powndt. 1,000 2,000 3,000 4, OOO 5,000 6,000 7,000 8,000 9, 000 10, 000 11, 000 12, 000 13, 000 14, 000 .15,000 16, 000 17,000 18, 000 19, 000 20, 000 21, 000 22, 000 23,000 24,000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 34, 000 . 35, 000 36, 000 37, 000 38,000 39, 000 40, 000 50, 480 Pminds. 1,000 2,000 3,000 4,000 15, 000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, OOO 19, 000 20, 000 21, 000 22, 000 23, 000 24,000 25, 000 26,000 27,000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 34,000 35, 000 30, 000 37, 000 38, 000 39, 000 40,000 50, 480 Inch. 0. . 00003 .00009 .00013 . 00018 . 00022 .00028 .00033 . 00038 . 00042 . 00047 . 00053 . 00058 . 00063 . 00C69 . 00076 . 00082 .00088 . 00093 . 00099 . 00106 .00113 . 00120 . 00128 .00135 . 00146 . 00157 . 00164 . 00177 . 00188 . 00208 . 00227 . 00247 . 00271 . 00303 . 00338 . 00363 . 00408 . 00453 . 00512 Inch. 0. . (10003 .00006 .00004 . 00005 . 00004 . 00006 . 00005 .00005 . 00004 . 00005 . 00006 .00005 . OOOOS . 00006 . 00007 .00006 . 00006 . 00005 . OOOOS . 00007 . 00007 . 00007 . 00008 . 00007 .00011 .00011 . 00007 . 00013 . OOOll . 00020 .00019 . 00020 . 00024 . 00032 . 00030 . O0O3O . 00045 .00045 . 00059 Inch. 0. Inch. 0. Initial load. . 00006 .oeoio .00004 . 00021 . 00313 .00175 Ultimate stiength. Failed by triple flexure. H. Ex. 165 18 274 12-lNCH B. L. RIFLED MOETAKS. No. 84a. Length, 10". '" Diameter, r'.129. Sectional area, 1 square inch. Gauged length, 5". Applied loads. TotaJ. Per square inch. Compres- sion per inon. Successive compres- sion per inch. Permanent set. Successive permanent set. Bemarks. PouTids. 1,000 2,000 3,000 i, 000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19,600 20, 000 21, 000 22, 000 23,000 24,000* 2J, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31, COO 32, 000 33, 000 34,000 35, 000 36, 000 37,000 38, 000 39, COO 40, 000 58,250 Fowndg. 1,000 2,t)00 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11,000 12, 000 13, 000 14, OOO 16, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 "23,000 24,000 25, 000 26, 000 27, 000 28,000 29, 000 30, 000 31, 000 32, 000 33, OOO 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, OOO 58,250 Inch. 0. .09006 .00010 . 00016 . 00020 . 00026 . 00032 . 00036 . 00040 . 00046 . 00052 . 00068 .00062 .00068 .00074 . 00080 . 00086 . 00092 . 00098 . 00104 . 00112 . 00120 . 00126 .00132 . 00140 .00150 . 00160 . 00170 .00180 . 00192 . 00210 . 00230 .00252 . 00274 . 00304 . 00366 . 00404 . 00450 . 00500 Inch. 0. . 00006 . 00004 . 00006 . 00004 .00006 . 00006 .00004 .00004 .00006 . 00006 . 00006 . 00004- . 00006 . 00006 . 00006 . 00006 . 00006 . 00006 . 00006 . 00008 . 00008 . 00006 . 00006 . 00008 .00010 . 00010 ' .00010 .00010 . 00012 . 00018 . 00020 .00022 . 00022 . 00030 . 00032 . 00030 . 00038 . 00046 . 00060 Inch, 0. Inch. 0. Initial load. .00002 .00008 .00004 . 00014 . 00028 . 00014 .00052 . 00024 . 00136 . 00084 . 00170 Ultimate strength. Failed by triple flexure. 12-TNCH B. L. RIFLED MORTARS. CastIuon Body, No. 19. 275 No. 4047. Marks, 12 ^;^'f,'^^ Length of stem, 23". Diameter, '1".129. Sectional area, 1 square inch. Gauged length, 20". Applied loads. Elonjr.'ition ]!ei' iuoh. Snncopsivo oloiigaiiiiii piT iiioii Povmnont sut. Sacoessive pcrioanent set. Bemarks. Total. , Per square incb. Founds. ■ 1,000 2,000 3,000 4,000 5,000 6, 000 7,O0O> 8,000 9,000 io;ouo 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 • 17, 000 18, 000 19, 000 20, 000 21,000 22, 000 23,000 - 24,000 25,000 29, 910 Fornids. 1,000 2,000 3,000 4,000 5,000 6,000 7,900 8,000 9,000 10, 000 11,000 12,000 13,000 14,000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24, 000 25, 000 29,910 Inch. 0. . 000045 .000095 . 000145 . 000195 . 000245 . 000300 .000350 .000405 .000460 . 000530 . 000585. . 000650 . 000720 . 000765 . 000850 . 000930 .001010 . 001095 .001190 .001295 .001405 . 001530 . 001680 .001875 Inch.' 0. . 000045 .000050 .000050 .000050 .000050 , 000055 . 000050 . 000055 .000055 . 000070 , .000055 . 000065 .000070 , .000065 .000065 . 000080 . 000080 ^ 000085 .000095 .000105 .000110 . 000125- . 000160 .000195 Inch. 0. Inch. 0. Initial ioad. Tensile strength. . 000005 . 000005 . 000030 .000025 . 000045 . 000015 .000070 . 000025 .000095 , .000025 . 000130 . .000035 .000195 . 000065 . 000280 . 000085 .000425 • . 000530 .000145 . 000105 Fractured. 2J" from neck. Appearance, medium coarse granular; contains dark spots. Spcciflc gravity, 7.3160. Hardness, 15.75. 276 12-lNCH B. L. KIFLED MOKTABS, No. 4048. Marks, 12 *^^!{:,7«' Length of stem, 23". Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 20". Applied loads. Elonptation per inch. - Sncoesaive elongation per inch. Permanent set. Successive permanent set. ■ Heraarks. Total. Per square inch. Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9, 000^ 10, 00(1 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24, 000 25, 000 29, 620 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, (100 15, 000 16, 000 17, 000 18, 000 19, 000 20,000 21, 000 22, 000 23, 000 24, 000 25, 000 29, 620 iTUlh. 0. . 000040 .000095 . 000140 . 000190 . 000240 .000295 . 000350 .000405 .000460 . 000535 . 000590 . 000650 .. 000725 .000790 . 000855 . 000940 .001015 . 0OUO5 . 001200 . 001305 . 001420 . 001560 .001710 . 001905 Inch. 0. . OOOOiO . 000055 . 000046 . 000050 . 000050 . 000055 . 000065 .000055 .000055 . 000075 . 000055 .000060 .000075 ' . 000065 . 000065 . 00008S . 000075 . 000090 . 000095 .000105 . 000115 . 000140 . 000150 . 000195 Inch. 0. Inch. 0. Initial load. Tensile strength. 0. . 000035 .000035 . 000050 . 000015 . 0000G5 . 000015 . 000005 . 0U0030 . 000140 . 000045 . 000205 . 000065 . 000300 . 000095 . OOoiis . 000565 .000155 . 000110 Fractured 2". 25 from neck. Appearance, medium coarse granular ; contains dark spots. TENACITY SPHOIMBNS. General marks, 12 M Ejg T Ei. No of test. Additional marks. Diameter. Sectional area. Tensile strength. Speciflo gravity. Hardness. Total. Per square inch. 3122 3123 3124 3125 MT,1 MT4O MTjM MTsOX Inches. 1.129 1.129 1.129 1.J29 Sq. inch. 1.00 1.00 1.00 1.00 Pounds. 33, 390 31, 610 31, 040 33, 800 Pounds. 83,390 31, CIO 31, 040 33, 800 7.3219 7. 3205 7.3276 16.56 15.91 16.56 12-INCH B. L. KIFLED MORTARS. JSO. 841. iTE,' X 277 Length, 12". " Diameter, I'M 29. Sectional area, 1 square inch. Gauged length, 10". Applied loads. Total. Per square men. Compres- sion per inch. ' Saccesslve compres- sion per inch. Permanent set. Successive permanent set. Kemarks. Pounds. 1,000 2,000 3,000 4,000 5,000 fi,000 7,000 8,000 9,000 10,000 n, 000 12, coo 13, 000 14,000 15, 000 16, 000 17, 000 18, 000 19,000 20,000 21, 000 22, 000 23, 000 24, 000 25, 000 26, 000 27, 000 28, 000 29, 000 30. 000 31, 000 32, 000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39,000 40, 000 56, 380 Pounde. IjOOO 2,000 3,000 4,000 5, 000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17,000 18, 000 19, 000 20, 000 21,000 22, 000 23, 000 24,000 2s, ooa 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 34, COO 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 56, 38U Inch. 0. . O00O5 . 00010 . OOOIO .00020 .00024 . 00029 . 00034 . 00039 .00044 . 00048 .00054 . 00059 . 00064 .00070 . 00076 . 00080 . 00086 .00091 .00008 .00103 .00109 .00115 .00122 . 00129 . 00135 . . 00140 . 00149 . 00157 . 0016B . 00175 . 00185 . 00196 . 00208 .00221 .00238 . 00255 .00273 .00300- .00330 Inch. 0. I . 00005 ' . 00006 . OC005 . 00005 . 00004 . 00005 . C0005 . 00003 . 00005 . 00004 . 00006 .00005 . 00005 . 00006 . 00006 .00004 .00006 . 00005 . 00007 .00006 . 00006 . 00006 . 00007 . 00007 . 00006 . 00005 . 00009 . 00008 . 00009 . 00009 .00010 . 00011 . 00012 .00013 .00017 . 00017 .00018 . .00027 .00030 Inch. 0. Inch. 0. Initial load. . 00001 . 0C006 . 00005 . 00004 . 00016 . 00006 . 00029 .C0013 . OOOflO . oooai . 00141 Ultimate strengib. Failed by triple flexure. 278 12-INCH B. L. RIFLED MOETAES. No. 3992. Marks/' ^A\'^^ Length of stem, 23". Diameter, 1".129. Sectioual area, 1 square incli. Ganged length, 10". Applied loadB. Elonfi.ilion pur iiicl). Successive elongation l)cr inch. Permanent set. Successive permanent set. Eemarks. Totifl. Per square inch. Pounds. 1,000 2,000 3,000 4,000 6,000 6,000 7, 000 8,000 9, 000 ■ ID, 600 11, 000 12, 000 13, 000 14, 000 15, OCO 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24, 000 25, 000 25, 510 Pounds. . 1, 000 2,000 3,000 4,000 6,000 7,000 7,000 8,000 9,000 10,000 11, 000 12, 000 13,000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24, 000 26,000 25, 510 Inch. 0. . 000055 .000100 . 000150 . 000200 . 000255 . 000310 . 000365 . 000430 . 000500 . 000565 .000640 . 000706 . 000795 .000880 . 000965 . 001085 . 001185 . 001330 .001470 . 001675 . 001860 . 002120 . 002440 . 002860 Inch. 0. . 000055 . 000045 . 000050 . 000050 . 000055 . 000055 . 000055 . 000065 . 000070 . 000005 . 000075 . 000065 .000090 . 000085 .000086 . 000120 .000100 .000145 .000140 .000205 .000185 .000260 . 000320 . 000410 Inch. 0. Inch. 0. Initial load. i Tensile atrengtb. 0. . 000010 . 000010 . 000040 . 000030 .000060 . 000020 . 000115 . 000065 .000200 . 000085 . 000340 . 000140 . 000585 .000245 .000990 . OOJ.30C . 000406 . 000310 Fractured 4",25 from neck. Appearance, granular, one side showing coarser radiant granulation. Specific gravity, /?.3120. Hardness, 14.19. 12-INCH B. h. RIFLED MORTARS. 279 Ko. 3993. Marks, 12 ME„TE, Length of stem, 23", Diameter, 1'/.129. Sectional area, 1 square inch. Gauged length, 20". Applied loads. Elongation per inch. Saoceaslve elongation per inch. Permanent . set. Successive permanent set. Kemarke. Total. Per square inoli. Pounds. 1,000 2,000 3,000 4,000 6,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13,000 14,000 15, 000 16, 000 17, 000 18,000 19,000 20, 000 91,000 22, 000 23, 000 24, 000 25,000 29,610 Pounds. 1,000 2,000 3,000 4,000 . 5,000 6,000 7,000 8,000 9,000 10,000 11,000 12,000 13, 000 14, 000 16, 000 16,000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24, 000 25, 000 29, 610 Inch. 0. , . 000055 .000115 . 000176 ,000230 . 000290 .000340 .000406 .000465 . 000540 . 000600 .000675 . 000760 .000836 .000910 .001010 .001115 . 001240 . 001356 .001500 .001690 .001886 .002130 .002460 . 002810 Inch.' 0. . 000056 .000060 . 000060 .000056 . 000060 .000050 .000065 . ooooeo .000076 .000060 .000075 . 000075 .000085 .000075 - . 000100 .000105 . 000125 ' . 000116 .000145 . 000190 . 000195 . 000246 .000310 . 000360 Inch. 0. Inch. 0. Initial load. Tensile strength. .000010 . .000010 . 000045 .000035 .ooooieo .000015 . 000100 . 000040 . 000150 .000050 .000240 .000090 . 0003G0 .606120 . 000600 . 000240 .001000 . 001260 . 000400 .000260 Fractured 4.1" from neck. Appearance, uniform granular. TENACITY SPECIMENS. General marks, 12 M Rjb T Ez- No. of test. Additional marks. Diameter. Sectional area. Tensile strength. Specific gravity. Hardness. Total. Per square inch. 3I19 3120 3121 3110 3111 3112 BT.I BT4O BTjM BLel BL7O BLsM Inches. 1.129 1.129 1.129 1.129 1.129 1.129 Sq. inch. 1.00 1.00 1.00 1.00 1.00 1.00 Pounds. 30, 090 33, 320 31, 140 31,410 32,040 31, 690 Founds. 30,000. 33,320 31, 140 • 31,410 32,040 ' 31, 690 7. 3215 7.3139 7.3224 14.69 14.69 15.13 280 12-INCn B. L. EIPLKD MORTARS. No. 839. Marks, 12 ME«TE, Leugtb, 12". " Diameter, 1".129. Sectional area, 1 square incli. Gauged length, 10". ' Applied loads. Compres- sion per inch. Sacoessive compres- sion per inch. Permanent set. Successive permanent set. Eomarts. Total. Per square inch. Pounds. 1,000 2,000 3,000 ' 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, OOO 13, 000 14, OOO 15, 000 16, 000 17, 000 J 8, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24,000 '25, 000 26,000 27, 000 28, 000 29, 000 30, 000 31,000 32, 000 33, 000 34, 000 35, 000 36, 000 87, 000 38, 000 39, 000 40, 000 61, 800 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11,000 12, 000 13, 000 14,000 15, 000 16, 000 17, 000 18, OOO 19,000 20, 000 21, 000 22, 000 23, 000 24,000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 34, 000 35, 000 36, 000 37, 000 , 38, 000 39, 000 40, 000 51, 800 Inoh. 0. .00007 . OOOll .00016 . 00021 . 00028 . 00032 .00038 . 00042 .00048. .00053 . 00059 .00067 .00072 . 00078 . 00084 . 00090 . 00098 .00104 . 00111 .00118 . 00124 . 00133 .00142 . 00161 . 00162 . 00173 . 00186 . 00201 . 00219 . 00239 .00258 . 00281 . 00313 . 00347 . 00400 . 00426 . 00465 . 00515 . 00565 Inch. 0. . 00007 . 00004 . 00005 . 00005 .00007 .00004 . 00006 . 00004 .00006 .00005 . 00006 . 00008 . 00005 . 00006 . O0006 . 00006 . 00008 . 00006 . 00007 . 00007 . 00006 . 00009 . 00009 . 00009 .00011 . 00011 . 00013 . 00015 . 00018 . 00020 .00019 .00023 .00032 .00034 . 00053 . 00026 .00039 . 00050 . 00050 Inch. 0. Inch. - 0. Initialload. Ultimate strength. .00001 .00001 .00005. .00004 .00009 . 00004 . 00016 .00007 . 00030 . 00014 .00072 . 00042 .00173 .00101 .00361 .00188 Failed by triple flexure. 12-INCH B. L. EIFLED MORTARS. 281 No. 840. Marks, i2MKij.Ji^ Length, 10". '" Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 5". Applied loads. Compres- sion per inch. SnccessiVe compres- sion per inch. Permanent set. Successive permanent set. Bemarks. Total. Per square inch. I'ounds. 1,000 2,000 3,000 4,000 5,000 8,000 7,000 8,000 9,000 10, 000 11,000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 •21, 000 22, 000 23, 000 24,000 25, 000 26, 000 27, 000 28,000 29, 000 30, 000 31, 000 32,000 33, 000 . 34,000 35^000 36, 000 37,000 38, OOO 39, 000 40, 000 61,900 Pounds, 1,000 - 2, opo 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000 11, 000 12, 000 13, 000 14,000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24, 000 25, 000 26,000 27,000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 34,000 35, 000 36, 000 .37, OOO 38,000 39, OCO 40, 000 81,900 tneh. 0. . 00006 . 00012 . 00016 . 00020 . 00026 . 00030 .00036 . 00040 .00046 . 00050 .00058 .00066 . 00072 .00078 . 00082 . 00086 . 00092 . 00098 . .00102 . 00110 . 00120 . 00128 .00138 .00150 .00100 . 00172 ,00182 .00200 .00220 ' .00^2 .00260 . 00290 .00314 . 00360 .00396 . 00430 .00470 .00514 . 00570 Inch. 0. . 00008 . 00006 .00004 . 00004 . 00006 .00 04 . 00006 . 00004 . 00006 . 00004 .00008 . 00008 .00006 , .00006 . 00004 .00004 . 0000ft . 00006 . 00004 .00008 .00010 . 00008 .00010 . 00012 . 00010 .00012 .00010 .00018 . 00020 .00022 . 00018 . 00030 .00024 .00046 .00030 . 00034 . 00040 .00044 . 00056 Inch. 0. Inch. 0. Initial load. Ultimate strength. 0. . 00002 . 00002 ^ . 00014 .00012 . . 00020 : .00006 .00038 . OOOIS . 00072 .00034 .00186 . 00114 .00380 . 00194 Failed by triple flexuje. 282 12-INCH B. L. RIFLED MORTARS, Oast-Ieon Body, No. 20. No. 4078. Marts, i^^M^^ii^^' Length of stem, 23". Diameter, 1".]29. Sectional area, 1 square inch. Gauged length, 20". Applied loads. BloDgation per iDCh. Successive elongatioD per inch. Permanent But. SucoessiTe permanent set. Kemarks. Total. Per square inch. Pounds. 1,000 2,000 3, UOO 4,000 5,000 6, 000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 lo, 000 16,000 17,000 18, 000 10, 000 20,000 21, 000 22,000 23, 000 24,000 25,000 29, 080 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000 11, 000 12, 000 13, 000 14, 000 15,000 16, 000 17, 000 18,000 19, 000 20, 000 21, 000 22, 000 23, 000 24,000 25, 000 29, 080 Inch. 0. . 000055 . 000105 . 000165 . 000200 .000255 . 000305 .000360 .000410 . 000465 . 000530 . 000580 .000650 .000710 , .000770 . 000850 . 000020 . 001000 . 001085 . 001185 . 001270 . 001390 .001500 . 001635 . 001790 Inch. 0. . 000055 . 000050 . 000050 . 000015 . 000055 . 000050 . 000065 . 000050 . 000055 .000065 . 000050 . 000070 . 000060 . 000060 . 00008C . 000070 . 000080 . 000085 . 000100 .000085 .000120 . 000110 . 000135 .000155 Inch. 0. Inch. 0. Initial load, Xensile strength. . 660665 .000005 . 000030 . 000025 ; 666635 . 000005 . 000055 . 000020 . 000085 . 000030 .000115 . 000030 . 666176 . 000055 . 000260 . 000090 . 000370 . 000450 .OOOUC .000080 Fractured 2" from neck. Appearance, granular mottled. TENACITY SPECIMENS. General marks, 12 M E20 T Ei No. of test. Additional marks. Diameter. Sectional area. Tensile strength Specific gravity. Hardness. Total. Per square inch. 4418 4419 4420 4421 MT3I MT4O MT5M MTeO Inch. 1. 129 1.129 1.129 1.129 Sq. inch. 1.00 1.00 1.00 1.00 Pounds. 34, 150 31, 700 32,450 33, 720' Pounds. 34, 150 31, 700 32, 450 33, 720 7.3191 7.3282 7. 3324 7.3015 17.17 16.07 16.90 15.59 i3pecz7njerijis/ro7Tz^^yyCti,z>'zle ^^c HEx ./<^.i[:.--51 2 12-lNCH B. L. EIPLED MORTARS, 283 No. 851, Marks, 12 ME„TK, Lengtb, 12",' Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 10"- Applied loads. Total. Per square loch. Compres- sion per inoD. Successive conipres- sion per inch. Permanent set. Successive permanent Kemarks. Pound*. 1,000 2,000 3,000 4,000 6,000 6, 000 7,000 8,000 9,000 10, 000 11,000- 12, 000 13, 000 14,000- 15,000 16, OOO ' 17, 000 18, 000 19j 000 20, 000 " 21,000 23, 000 23, 000 24, 000 25, OOO 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 34, 000 35, 000 36, 000 37,000 38, 000 39,000 40, 000 56, 650 I^ounds. I,0o0 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 ir, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 -18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24,000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33,000 34, 000 36, 000 36, 000 37, 000 38,000 39, 000 40, 000 66, 650 Inch. 0. . 00003 . OOOUS . 00012 . 00016 .00019 . 00024 . 00029 -.00034 . 00039 . 00044 .00050 : 00056 .00060 . 00085 . 00071 . 00076 . 00081 . 00088 . 00092 . 00099 . 00104 .00111 .00118 .00123 .00130 . 00138 .00144 . 00150 .00159 . 00170 . 00178 .00188 . 00198 . 00210 . 00226 . 00240 . 00257 . 00278 .00300 Inch. 0. . 00003 . 00005 .00004 . 00004 . 000O3 . 00005 . OO0O5 .00005 . 00005 . 00005 . 00006 .00005 . 00005 . 00005 . 00006 . 00005 . 00005 .00007 . 00004 . 00007 . 00005 . 00007 . 00007 . 00005 . 00007 . 00008 . 00006 . 00006 . 00009 . 00011 . 00008 . 00010 . OOOIO . 00012 . 00016 . 00014 . 00017 . 00021 . 00022 Inch. Inch. Initial load. . 00001 .00001 . 00005 . 00009 . 00014 . 00005 . 00024 .00024 . 00110 . 00062 Ultimate strength. Failed by triple flexure. 284 12-INCH B. L. RIFLED MOETAKS. No. 4076. Marks, 12 M^E^^jE, Length of stein, 23". Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 20". Appli 3(1 loads. Elongation per inch. Successive elongation per inch. Permanent set. Successive permanent set. Eemarks. Total. Per square Inch. Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13,000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24,000 25, 000 30, 690 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 . 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 16, 000 16, 000 17, 000 18,000 19, 000 20, 000 21, 000 22, 000 23, 000 24, 000 25, 000 30, 590 Inch. 0. .000055 . 000105 . 000155 . 000205 . 000260 . 000310 . 000370 .000425 . 000500 . 000650 .000610 . 000680 .000750 . 000840 . 000910 . 001005 . 001105 .001210 . 001320 . 001460 .001625 .001820 . 0020G0 .002310 Inch. 0. .000055 . 000060 . 000060 . . 000050 . 000055 . 000050 . 000060 . 000055 . 000075 . 000050 . 000060 . 000070 . 000070 . 000090 .000070 . 000095 . 000100 .090106 . 000110 . 000140 .000165 . 000195 .000240 . 000250 Inch. 0. . Inch. 0. Initial load. Tensile strengti.. 0. .000025 . 000025 . 000040 ■. oooois . 000070 . 000030 . 000115 . 000045 . 000170 . 000055 - . 000266 . 000095 . 000430 . 000165 .000700 . 000880 .000370 . 000180 Fractured 11" from neck. Appearance, uniform granular. Specific gravity, 7.3163. Hardness. 14.33. ^pec7^/7te7iAS ^o/7ty ^/^eecT^ ^:^cy. H Ex.../i^.;C... ..51 2 12-INCH B. L. RIFLED MORTARS. I Bo. 4077. 285 Length of stem, 10". Diameter, 1".128. Sectional area, 1 square inch. Gauged length, 10". Applied loads. Tntal Per square ■'•'>**'■ inch. Pound*. 1,000 2,000 3,000 4,000 5, 000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, OoO 15, 000 16,000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24,000 25, 000 31, 410 Pounds. 1,000 2,000 - 3, 000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23,t)00 24,000 25, 000 31, 410 Elongation per inch. Inch, 0. . 00005 . 00010 . 00016 . 00021 . 00027 . 00033 . 00040 . 00048 . 00053 . 00058 . 00065 . 00072 . 00081 . 00088 . 00098 . 00107 .00118 . 00130 .00142 .00158 . 00178 .00198 . 00228 . 00270 Successive elongation per inch. Inch. 0. . 00005 . 00005 . 00006 . 00005 . 00006 . 00006 . 00007 . 00008 . O0O05 . 00005 . 00007 .00007 . 00009 .00007 . OOOJO . 00009 . 00011 . 00012 . 00012 . 00016 . 00020 . 00020 . 00030 .00042 Permanent set. Inch. . 00088 . 00120 Successive permanent Inch. 0. 0. 0. . 000O3 . 00003 .00008 . 66065 . 00010 .00002 .00013 . 00003 .00022 .00009 . 00033 . 00011 .00053 . 00020 . 00035 . 00032 Hemat'ks. Initial load. Tensile strength. Fractured 3".4 from neck. Appearance, uniform granular. TENACITY SPECIMENS. General marks, 12 M E^o T E2. No. of test. Additional marks. Diameter. Sectional area. Tensile strength. Specific gravity. Hardness. Total. Per square inch. N 4411 4412 4413 4414 4415 4416 - 4417 BT3I BT4O BTjM BLjI BL,0 BLglH BT,M Inch. 1.129 1.129 1.129 1.129 1.129 1.129 1.129 8g. inch 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Pounds. 33, 510 33,e9a. 33, 610 34,990 33,840 33, 340 31, 970 Poicnds. 32, 510 33, 690 33,610 34, 990 ■33, 840 33, 340 31, 970 7.3191 . 7.3118 7. 3237 15; 43 14.98 15.36 286 12-INCH B. L. RlVhV.h MOKTAES. No. 852, Marks, 12 ^V"" Length, 12". Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 10". Applied loads. Compres- sion per inch. Successive compres- sion per inch. Permanent set. SnccessiTe permanent set. Remarks. Total. Per square luck. Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24,000 26, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 61, 290 Poundt. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11,000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24,000 25, 000 26,000 27, 000 28, 000 29, 000 30, 000 31,000 32,000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 51,290 Inch. 0. .00005 .00010 .00015 . 00020 . 00025 . 00030 . 00035 .00040 . 00045 .00052 . 00068 . 00063 . 00070 . 00075 .00082 . 00090 . 00098 .00104 .00110 .00119 . 00127 .00137 .00143 . 00152 . 00164 .00177 .00190 .110205 . 00222 .00245 . 00265 .00395 .00325 .00356 .00405 . 00435 . 00470 . 00535 . 00598 Inch. 0. .00005 . 00005 .00005 .00005 .00005 .00005 .00005 ' .00005 . 00005 .00007 .00006 . 00005 .00007 .00005 . 00007 .00008 . 00008 . 00006 .00006 . 00009 . 00003 . 00010 . 00006 .00009 » 00012 . 00018 . 00013 .00015 . 00017 .00023 . 00020 .00030 . O0O3O . 00031 .00049 . 00030 . 00035 . 00063 .00063 Inch. 0. Inch. 0. Initial load. * Ultimate strength. 0. . 00001 .OOOOJ . 00008 . 00007 . 00015 . 00007 . 00030 . 00015 . 00068 .00038 " .00162 .00094 .00369 . 00207 Failed by triple flexure. Specific gravity, 7,3083. Hardness, 15.91. 12-INCH B. L. KIFLED MORTAKS. 287 No. 853. Marks, ^^^^»,'^'^ Length, IQ". " Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 5". Applied loads. Total. Per sqnare inon. Compres- sion per inch. Sucoessive comprea- sioD per inch. Permanent set. Successive permanent set. Ilomari£s.. Fownda. 1,000 2,000 3,000 4,000 5,000 6, 000 . 7, 000 8; 000 9,000 JO, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18,600 19, 000 20, 000 21, 000 22,000 23, 000 24,000 25, 000 26, 000 27, 000 23, 000 29, 000 30, 000 31,000 32,000 33,000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, OOO 61, 020 Fov/nd», 1,000 2,000 3,000 4, 000 .. 5,000 6,000 7,000 8,000 9,000 10, 006 11,000- 12, 000 13, 900 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24, OOO 25, 000 26„000 37, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 34t 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 Gl, 020 Tncli, 0. . 00002 . 00008 .00014 . 00020 .00024 . 00028 .00032 .00036 .00042 . 00048 . 00054 . 00058 .00062 . 00068 . 00076 . 00082 . 00088 .00094 .00100 . 00106 . 00112 . O012O . 00126 . 00136 .00144 .00156 . 00168 . 00180 . 00196 . 00216 .00288 . 00326 . 00354 . 00394 . 00434 . 00484 .00340 Inch. 0. . 00002 . 00006 . 00006 .00006 . 00004 . 000U4 . 00004 .00004 . 00006 . 00006 . 00006 . 00004 . 00004 . 00006 . 00008 . 00006 . 00006 . 00006 . 00006 , .00006 .00006 . O0008 . 00006 . 00010 . 10008 . 00012 .00012 . 00012 .00016 . 00020 . 00020 . 00024 .00028 . 00038 . 00028 . 00040 . 00040 . 00050 .00066 Inch. 0. Insh. 0. Initial loiul. . OOOIO .00054 . 00030 . 00096 . 00340 . 00190 Ultimate strength. Failed by triple flexure. 288 12-lNCH B. L. RIFLED MORTARiS. Oast-Iron Body, No. 21. No. 4084. Marks, 12 ^jj'i,^^' Length of stem, 23". J^iameter, 1".129. Sectional area, 1 square inch. Gauged length, 20"- Applied loads. EloDgation per inch. Successive elongation per inch. Permanent set. Saocessive permanent set. Eemarks. Total. Per square inch. Pounds. 1,000 2,000 3,000 4,000 S,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13,000. 14, 000 15, 000 16,000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24,000 25, 000 28, 350 Pownds. 1,000 2,000 3,000 4,000 5,000 .. 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, COO 17, 000 18, 000 ; 19, 000 20, 000 21,000 22, 000 23,000 24, 000 25, 000 28, 350 Inch.. 0. . 000060 . 000100 .000150 . 000200 . 000250 . 000310 . 000360 . 000410 .000470 . 000530 . 000595 .000650 ,. 000715 . 000785 . 000860 .000930 . 001020 .001105 .00)205 . 001305 .001450 .001595 .001760 . 002005 Inch. 0. .000050 . 000050 . 000050 .OOOO.iO . 000060 . 000060 . 000050 . 000050 .000060 . 000060 .000065 . 000055 . 000065 .000070 . 000075 . 000070 . 000090 . 000085 .000100 . 000100 . 000145 .000145 . 000165 .000245 Inch. 0. Inch. 0. Initial load. Tensile strength. 0. . 000005 . 606605 .000010 . 000005 .000035 .000025 . 000060 . 000025 . 000105 .000045 .000165 .000060 . 000260 . 000105 . 000440 .000595 . 000180 .000165 Fractured 9".5 from neck. Appearance, uniform granular. TENACITY SPECIMENS. General marks, 12 M E21 T Ei. No. of test. Additional marts. Diameter. Sectional area. Tensile strength. Specific gravity. Hardness. Total. Per square inch. 4429 4430 4431 4432 MT3I MTjO MTjM MTjO Inches. 1.129 1.129 1.129 1.129 Sq. inch. 1.00 1.00 1.00 -1.00 Pounds. 33, 610 31,520 31, 700 34, 800 Pounds. 33, 610 31, 520 31, 700 34, 800 7. 3105 7. 3ia2 7. 3278 7. 3158 15.91 15. 4:1 16.48 15.00 iypeozTTheTZfiy ^OTn^^y^zts^Z'^ ^z^cx^* HEx ..y.<^^.__.51 2 12^INCH B. L, KIFLED MOETAES. 289 No. 856. Marks, 12ME.^TE, Length, 12". Diameter, 1".129. » Sectional area, 1 square inch. Gauged length, 10". Applied loads. Compres- sion per inch. Successire compres- sion per incb. Permanenl. set. Successive permanent set. Ken) arks. Total. Per sqnare incli. Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 ' 23, 000 24, 000 26, 000 26,000 27, 000 28, 000 29,000 30, 000 31,000 32, 000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 55, 900 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14,000 15, 000 16, 000 17, 000 18,000 19,000 20, 000 21, 000 22, 000 23, 000 24,000 25, 000 26, 000 27,000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 34,000 36, 000 36, 000 37, 000 38, 000 39, 000 40, 000 56, 900 Inch. 0. .00005 .00011 . 00015 .00020 . 00025 .00031 .00036 .00041 .00047 . 00062 .00057 . 00063 .00068 . 00072 .00079 . 00085 . 00091 .00097 .00102 . 0010§ .00113 .00121 .00128 . 00134 . 00142 .00150 . 00160 .00168 . 00177 .00188 .00198 . 00208 . 00221 . 00237 . 00257 .00271 . 00294 .00318 . 00352 Inch. 0. . 00005 . 00006 . 00004 . 00(103 . 00003 . 011006 . 00005 . 00005 . 00006 .00005 . 00005 . 00006 . 00005 . 00004 .00007 . 00006 . 00006 . OOOOB . 00005 .00008 . 00005 . 00008 . O0OO7 . 00OO6 . 00008 . O00O8 .00010 . 00008 . 00009 . 00011 .00010 .00010 .00013 .00016 .00020 . 00014 . 00023 .00024 . 00034 Inch. 0. Inch. 0. Initial load. Ultimate strength. . 00001 .00001 .00003 .00002 . 00007 .00002 .00010 .00003 .00018 . oooos .00032 .00014 .00067 . 00035 .00148 . ooosi Failed by triple flesuie. Specific gravity, 7.3195. Hardness, 17.81. H. Ex, 165^—19 290 12-INCH B. L. RIFLED MOKTAES. Marks, 12 M^^^TR, Length of stem, 23". Diameter, 1".129. Sectioual area, 1 square inch. Gauged length, 20". No. 4085. Applied loads. Elongation perincb. SnccesRive elongation per inch. Permanent set. Successive permanent set. Bemarkg. Total. Per square inch. Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, '000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20,000 21, 000 22, 900 23, 000 24, 000 25, 000 29,630 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8, 000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24, 000 26, 000 29, 630 Inch. 0. . 000065 .000110 .000160 .000216 . 000275 . 000340 .000400 . 000460 . 000615 . 000590 . 000660 .000745 . 000820 .000910 .001010 .001110 . 001250 .001385 .001555 .001746 .001986 .002275 . 002C25 . 003106 Inch. 0. . 000055 . 000055 . 000050 . 000055 .000060 . 000065 . 000060 . 000060 . 000065 . 000075 . 000070 . 000085 . 00007.^ . 000090 .000100 . 00(1100 .000140 .000135 . 000170 . 000190 . 000240 . 000290 . 00U3.-10 . 000480 Inch. 0. Inch. 0. Initial load. Tensile strength. . 000005 . 000005 . 000040 . 000035 . 000155 . 000015 . 000090. .000035 .000165 . 000065 . 000250 . 000095 . 000405 .000165 . 000660 . 000255 .001140 .001515 . 000480 . 000375 Fractured II J" from neck. Appearance, uniform granular. Specific gravity, 7.31-8, Uardness, 14.33. CcuslTro7t^dzefyte strength. Failed by triple flexure. 294 12-INCH B. L. RIFLED MORTARS. Oast-Iron Body, Fo. 22. No. 4124. Length, of stem, 23". Diameter, l".12y. Sectional area, 1 square incli. Gauged length, 20". Applied loads. Elongation per inch. Sncoes'sivb elongation per inch. Permanent set. Successive permanent set. Eemarts. Total. Per square Potmds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13,000 14, 000 15,000 16, 000 17, 000 18, 000 19, 000 20, 000 21,000 22, 000 23, 000 24,000 25, 000 29,520 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11,000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, OOO 20, 000 21, 000 22, 000 23, 000 24, 000 25, 000 29, 520 Inch. 0. . 000055 .000105 . 000155 .000205 . 000255 . 000305 . 000355 . 000410 .000460 . 000515 . 000580 .000640 . 000705 . 000780 . 000850 .000915 . 001000 . 001090 .001190 .001290 . 001405 . 001520 . 001685 .001875 Inch. 0. . 000055 . 000050 . 000050 .000060 . 000050 . 000050 . 000050 . 000055 . 000050 . 000065 .000005 . 000060 . 000065 .000075 . 000070 . 000065 . 000086 . 000090 .000100 .000100 .000115 . 000115 .000165 . 000190 Inch. 0. Inch. 0. Initial load. Tensile strength. . 000005 . 000006 . OOUOIO . 000005 . 660620 .000010 . 000010 . 000020 .000060 . 000020 . 000095 . 000035 . 0001.55 . 000060 . 000245 . 000090 . 000375 . 000490 .666136 . 000115 . Fractured 1" from neck. Appearance, granular mottled. TENACITY SPECIMENS. General marks, 12 M E22 T Ej. No. of test. Additional marlrs. Diameter. Sectional area. Ten.silo strength. Specific gravity. Hardness., Total. Per square inch. 4439 4440 4441 4442 MT.,I MT4O M Tj M MTsO Inches. 1. 129 1.129 1.129 1.129 Sq. inch. 1.00 1.00 1.00 1.00 Pounds. 32, 040 31, 120 31,530 32, 890 Pounds. 32, 040 31, 120 31, 530 32, 890 7.3235 7. 3278 7. 3320 7.3279 IT. 44 16.73 17.26 15.69 12-INCH B. L. RIFLED MOETAES. 295 Ko. 859. Marks, 12 ^^i,,''^' Length, 12". ' Diameter, 1".129. Sectional area, I square inch. Ganged length, 10". Applied loads. Total Per square '■o^^'^- inch. Compres- sioaper iuoh. Successive compres- sion per inch. PermaneDt set. Successive permanent set. Kemarks. Pounds. 1,00U 2,000 3,000 4,000 5, 000 6, 000- 7,000 ' 8, 000 9,000 10,000 11,000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19,000 20, 000 21,000 22, 000 23, 000 24, 000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 34,000 36, 000 36, 000 37, 000 38, 000 39, 000 40, 000 57, 160 Pounds. 1,000 2,000 3,000 4,-000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14,000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 006 23, 000 24,000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33,000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 57, 160 Inch. 0. . 00005 . oimo .00015 . 00019 . 0002.) . 00030 . 00035 , 00040 .00048 . 00C50 . 00056 . 00061 . 00066 .00072 . 00080 . 00086 .00091 . 00099 . 00103 . 00109 .00116 . 00120 . 00128 . 00134 . 00140 . 00148 .00156 . 00163 . 00171 . 00181 .00191 . 00205 . 00218 .00249 .00265 .00285 .00308 Inch. 0. . 00005 . 00005 .00005 . 00004 . OUOU'J . OUUOo . 00005 . 00005 . OOOOIS .OC.Olll . OOUOii .000115 . 00005 . 00006 . O0008 . 00006 . 0000.) . 00018 . 0000 1 . OOOUIj .000117 . 00004 . 00008 . 00006 . 01)006 . O0OO8 . 01)008 . O0OU7 . 00003 . 00010 .00010 .00011 .00013 . 00014 . 00017 .00016 .00020 . 00023 . 00031 Inch. 0. Inch. 0. Initial load. . 00004 . 00005 . 00030 . 00014 . 00032 . 00076 Ultimate strengtli. Failed by triple flexure. 296 12-INCH B. L. EIFLED MORTAKS. Marks, ^^^M Length of stem, 23". Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 20". No. 4122. Applied loada. Elongation per inch. Sncceafiive elongation per inch. Permanent set. SnccesaiTe permanent set. Kemorks. Total. Per square inch. Pounds. 1,000 2,000 3,000 4,000 5, 000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, OOO, 14, 000 15, 000 10, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24, 000 26, 000 26, 520 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15,000 16, 000 17, 000 - 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24, OOO 25, 000 26, 520 Inch. 0. .000055 . 000105 . 000155 .000205 .000265 .000325 .000385 .000440 . 000505 . 000580 . 000650 .000730 . 000790 . 000880 . 000975 .001070 . 001185 . 001300 ■ .001450 . 001640 . 001790 . 002055 .002340 . 002740 Inch. 0. . 000055 X . 000050 . 000050 . 000030 . 000060 . OOOUOO . OOoUliU .000055 . 000065 . 000075 . 090070 .000080 ' . 000060 . OU0090 . 000095 . 000095 . 000115 .000115 . 000150 . 000190 . 000150 .000265 . 000285 .000400 Inch. 0. Inch. 0. Initial load. Tensile strength. 0. .000035 . 000035 . 000055 . 000020 . 000090 . 000035 .000130 . 000040 . 000210 .000030 . . 000350 . 000140 .000550 . 000200 . 000910 . 001215 . 000360 . 000305 Fractured 3 J" from neck. Appearance, uniform granular. Specific gravity, 7.3233. Hardness, 15.75. 12-INCH B. L. RIFLED M0KTAE8, No. 4123. 297 Marks, '^%V^ Length of stem, 23". Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 20". Applied loads. Elongation per inch. 7 ' SncceasiTe elongation. per inch. Permanent set. Successive permanent set. Eemarks. Total. Per square inch. Founds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11,000 12, 000 13,000 14, 000 15,000 16, 100 17,000 18,000 19, 000 20, 000 21, 000 23, 000 23, 000 24, 000 24,980 Founds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9, 000 10,000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 - 22, 000 23, 000 24, 000 24,980 Inch. 0. .000055 .000110 . (100160 . U00215 .000270 . 000330 .000390 .000455 .000515 . 000585 . 000655 . 000735 . 000810 . 000890 . 000990 .001085 .001190 .001330 . 001465 .001640 .001865 .002085 .002435 Inch. 0. , 000055 . 000065 . 000050 -. 000055 .000055 .000060 .000060 .000066 .000060 . OOOU70 .000070 . 000080 . 000075 . 000080 .000100 . 000095 .000105 . 000140 . 000135 . 000175 . 000225 .000220 .000350 Inch. 0. Inch. 0. Initial load. Tensile strength. . 000005 .000005 .000040 .000035 ,.,606656 .000015 .000085 . 000030 . 000140 . 000055 . 000215 . 000075 .000365 . 000140 . C 00590 . 000235 . 000085 . 000395 Fractured 5" from neck. Appearance, uniform granular, excepting at one place in the circum- ference coarse dark spangles. TENACITY SPECIMENS. General marks, 12 M E22 T Ej No. of test. Additional marks. Diameter. Sectional area. Tensile strength. Specific gravity. Hardness. Total. Per stiuare inch. '4433 4434 4135 4136 4437 4438 BT5I B T4 BTjM BL„I BL,0 BLjM Inch. 1.129 1.129 1. 129 1.129 1. 129 1.129 8q. inch. 1.00 1,00 1.00 1.00 . 1.00 1.00 Founds. 30, 820 33, 640 30, 690 30,790 31,610 ' 30, 500 Founds. 30, 820 33, 640 30,690 30, 790 31,510 30, 500 7. 3248 7. 3281 7. 3269 15.07 14 98 14.06 298 12-INCH B. L. EIPLED MORTAES. No. 858, Marks, ^2 ^#f 7^ Length, 12". " Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 10". Applied loads. Total. Pounds. 1,000 3,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000, 14, 000 15, 000 18, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, OOO 24, 000 25, 000 26, OoO 37, 000 28,000 29, 000 30, 000 31,000 32, OOO 33, 000 34,000 35, 000 36, 000 37, 000 38,000 39, 000 40, 000 52, 250 Per aquare inch. Founds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11,000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, OOO 19, 000 20, 000 21, 000 22, 000 ' 33, 000 24, 000 35, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31,000 32, COO 33, 000 34, 000 36, 000 36, 000 37, 000 38, 000 39, 000 40, 000 52, 250 Compies- siOD per iucli. Inch. 0. . 00004 . 00010 .00015 . 00021 .00«28 . 00033 . 00038 . 00043 . 00049 . 00055 . 00061 . 00066 . 00072 . 00078 . 00083 . 00092 . 00098 . 00103 .00110 .00117 . 00124 .00132 .00140 . 00151 . 00162 . 00172 .00186 .00200 . 00220 . 00240 . 00257 . 00282 . 00322 . 00352 . 00402 . 00432 . 00472 . 00517 . 00580 Successive compres- sion per incli. Inch. 0. . 00004 . 00006 .00005 . 00006 . 00007 . 00003 .00005 . 00005 . 00006 . 00006 . 00006 . 00005 . 00006 . 00006 .00005 . 00009 . OOU06 . 00005 . 00007 . 00OU7 . 00007 . 00008 . 00008 . 00011 . 00011 .00010 . 00014 . 00014 . 00020 . 00020 . 00017 . 00025 . 00040 .00030 . 00050 . 00029 . 00041 ". 00045 . 00063 Permanent set. Inch. 0. . 00004 . 00010 Successive permanent set. Inch. 0. . 00004 . 00006 . 00015 . 00043 . 00105 .00194 ^Remarks. Initial load. Ultimate strengtli. Failed by triple flexure. 12-INCH B. L. RIFLED ,MORTAES. 299 No. 857. Marks, 12MT?,,TE, Length, 10". Diameter, 1".V2'.). Sectional area, i ,s(iiiiire inch. Gauged length, 5". Applied loads. Compres- sion per iucn. Successive compres- sion per inch. Permanent set. Successive permanent set. Bemarks. Total. Per square incn. Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000 11,000 12, 000 13, 000 14,000 , 15, 000 16, 000 17, 000 18, OOO 19, OOO 20, 000 21, 000 23, 000 23, 000 24, OOO 25, OOO 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, OOO 62, 540 Pounds. 1,000 2, 000 3,000 4,000 $,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24, 000 25, 000 26, 000 27, 000 28,000 29, 000 30, 000 31, 000 32, 000 33, 000 34, 000 35,000 36, 000 37, 000 28, 000 39, 000 40, 000 62, 540 Inch. 0. .00004 .00010 .00014 .00020 . 00024 . 00028 .00034 .00038 . 00040 . O005O . 00054 .00062 . 00068 . 00074 . 00080 .00086 . 00094 .00100 .00106 .00114 .00118 . 08128 . 00138 .00148 . 00158 . 00168 .00182 .00198 .00220 .00234 .00258 .00284 . 00318 .00360 . 00394 .00448 .00480 .00532 .00584 Inch. 0. .00004 . 00006 .00004 .00006 . . 00004 . 00004 .00006 . 00004 . 00008 . 00064 .00001 . 00008 . 00000 . ooooe . 00006 . OO0O6 . 00008 .00006 . 00006 . 00008 .00004 .00010 , . 00010 .00010 .00010 .00010 .00014 .00016 . 00022 . 00014 . 00024 . 00026 . 00034 . 00042 . 00034 . 00054 . 00032 . 00052 . 00052 Inch, 0. Inch, 0. Initial load. Ultimate atrensth. 0. ' . 00002 . 00002 . 00008 .00006 . 00014 . 00006 .00026 .00012 . 00072 . 00046 .00184 . 00112 . 00376 .00192 Failed by triple flexure. 100 12-inch b. l. eifled moetaes. Cast-Ieon Body, Fo. 23. No. 4152, Length of stem, 23". Diameter, 1".I29. Sectional area, 1 square inch. Gauged length, 20". Applied loads. Total ^^^ square Elongation per inch. Successive elongation per inch. Permanent set. Sncoessire permanent set. Kemarks. Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21,000 22, 000 23, 000 24, 000 25, 000 30, 480 Pounds, 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24,000 25, 000 30, 480 Inch. 0. . 000050 .000100 . 000150 . 000200 . 000250 . 000305 . 000360 .000420 .000475 . 000525 . 000600 . 0P0660 . 000730 .000800 .000865 .000935 .001020 .001115 . 001215 .001305 . 001420 .001530 . 001665 . 001845 Ijich. 0. . 000050 . 000050 . 000050 . 000050 . 000050 . 000055 . 000055 . 000060 .000055 .000060 . 000075 . 000060 . 000070 . 000070 . 000065 . 000070 . 000085 . 000095 . 000100 . 000090 .000115 .000110 . 000135 . 000180 Inch. . 000370 . 000470 Inch. 0. 0. 0. .000020 .000020 . 000050 . 000030 . 000055 .000005 . 000085 . 000030 . 000120 . 000035 . 000175 . 000055 . 000260 .000085 Initial load. . 000110 . 000100 Tensile .strengtli. Fractured 2^" from neck. Appearance, granular mottled. TENACITY SPECtMBNS. General marks, 12 M E23 T Ki. No. of test. Additional marks. Diameter. Sectional area. Tensile strength Specific gravity. Hardness. Total. Per square inch. 4450 4451 4452 4453 MT3I MTjO MTbM MTcO Inches. 1.129 1.129 1.129 1.129 Sq. inch. 1.00 1.00 1.00 1.00 Pounds. 83, 470 29, 210 32, 640 32, 390 Pounds. 33, 470 29, 210 32, 640 32, 390 7.3137 7.3153 7. 3288 7.3101 16.82 16.56 17. 62 16.23 12-INCH B. L. KIFLED MORTARS. 301 Marks, '^Vx,^^' Length, 12". Diameter, 1".129. Sectional area, 1 square inch Gauged length, 10". No. 862. Applied loads. Total. Founds. 1,000 2,000 3,000 4,000 6,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 10, 000 17, 000 18, 000 19, 000 20, 000 21. 000 22. OOO 23, 000 24,000 25, 000 26, 000 27, 000 28,000 29, 000 30, 000 31, 000 32, 000 33, OOO 34,000 35, 000 36, 000 37, 000 38, 000 39, 000 40,000 • 57, 040 Per square incu. Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11,000 12, 000 13," 000 14, 000 15. 000 16,000 17, 000 18, 000 19, 000 20, 000 21, 000 32, 000 23, 000 24, 000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 34, 000 35, flOO 36, 000 37, 000 38, 000 39, 000 40, 000 67, 940 OompreS; Bion per iucb. Inch. 0. . 00005 . 00004 . 00013 , 00018 . 00023 . 00028 . 00033 . 00039 . 00044 . 00049 . 00054 . 00060 . 00064 . 00070 . 00076 . 00082 .00088 . 00093 . 00101 .00106 . 00112 .00118 . 00123 . 0O13O .00138 . 00144 . 00152 . 00160 .00167 .00175 . 00184 .00195 .00205 . 00218 . 00232 . 00247 .00262 . 00282 . 00307 Successive coropres- sion per inch. Inch. 0. . 00005 . 00001 . 00004 . 00005 . 00005 . 00005 .. 00005 .00006 . 00005 . 00005 . 00005 . 0U006 . 00004 .000116 . OOjOO . 00000 . 00006 . 00005 . 0C008 . 00005 . 00006 . 00006 . 00006 . 00007 . 00008 . 00006 .00008 . 00008 . 00007 . 00008 . 00009 .00011 .00010 . 00013 .000]4 .00015 .00015 . 00020 . 00025 Permanent set. Inch.' 0. . 00001 .00112 Successive perm.anent set. Inch. 0. . 0000 1 . 00004 .00004 . 00006 .00011 .00025 Bom arks. luitialload. Ultimate strengtli. Failed by triple flexure. 302 12-INCH B. L. RIFLED MOKl^AES. No. 4126, Marks, i2M^TE, Length of stem, 23". Diameter, 1".129. Sectional area, 1 square incli. Gauged length, 20". Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. Sncceasive permanent set. Eemarks. Total. Per square inch. Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15,000 16, 000 17,000 18, 000' 19, 000 20, 000 '21,000 22,000 23, 000 24,000 25, 000 26, 140 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12,000 13, 000 14,000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23,000 24, 000 26, 000 26, 140 Inch. 0. . 000055 . 000110 .000160 .000215 . 000265 . 000330 . 000390 . 000455 . 000515 . 000580 . 000660 .000730 .000810 . 000890 . 001000 . 001100 . 001215 .001350 . 001490 .001675 . 001875 . 002140 . 002450 . 002925 Inch. 0. . 000055 . 000055 . 000050 . 000055 . 000060 . 000065 . 000060 . 000065 . 000060 . 000065 . 000080 . 000070 . 000080 . 000080 . 000110 . 000100 .000115 . 000135 . 000140 . 000185 . 000200 . 000265 .000310 .000475 Inch. 0. Inch. 0. Initial loud. Tensile .strength. 0. . 000020 . 000020 . 000040 . 000020 . 000090 . 000050 .666135 . 000045 . 000205 .000070 .000340 . 000135 . 000570 . 000230 . 000950 .001330 . 666380 . 000380 Appearance, uniform granular. Fractured 3".75 from neck. 12-INCH B. L. EIFLED MOKTAKS. 303 No. 4127. Marks, 12 Vl'.i'^ Length of stem, 9 J". Diameter, 1".129. Sectional area, 1 square inch. Grauged length, 5". Applied loads. Elongation per inoh. Snooessive elongation per inch. Permanent set. Successive permanent Bet. Bemarlss. Total. Per square Pounds. 1,000 2,000 3,000 4,000 5,000 C,000 7, 000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18,000 19,000 20, 000 21,000 22, 000 23, 000 24, 000 25,000 30, 710 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000 11, OOO 12, 000 13, 000 14, 000 16, 000 16, 000 17,000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24,000 26, 000 30,710 Inch. 0. .000060 .000120 .000180 . 000240 .000280 . 000320 .000380 .000440 . 000500 . 000580 . 000680 . 000760 . 000840 .000900 . 001000 . 001100 .001200 .001300 . 001460 ,001640 .001780 . 002040 . 002300 . 002640 Inch. 0. , .000060 .000060 .000060 .000060 .000040 . 000040 .000060 .000060 .000060 . 000080 . 000100 .000080 . 000080 .000060 . 000100 . 000100 .000100 .000100 . 000160 .000160 .000140 .000260 . 000260 . 000340 Inch. 0. Inch. 0. Initial load. Tensile strength. 0. ^ . 000040 . 000040 . 000060 . 000020 .000100 . 000040 .000160 . 000060 .000200 . 000040 . 000340 .000140 . 000540 . 000200 . 000880 . 001J160 . 000340 . 000280 Fractured 4r."25 from neck. Appearauce, uniform granular. TENACITY SPECIMENS. General marks, 12 M E23 T Ea. No. of test. Additional marks. Diameter. Sectional area. Tensile strength. Specific gravity. Hardness. Total. Per square incn. 4443 4444 4445 4446 4447 4448 4449 BT3I B Tj BTjH BLel BL7O BXsM B T, M ^ Inches. 1. 129 1.129 1.129 1.129 1.129 1.129 1.129 Sq. inch. 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Pounds. 29, 970 33, 700 31, 500 29, 810 33, 060 32, 020 30, 040 Pounds. 29, 970 33, 700 31, 660 29, 810 33, 050 32, 020 30, 040 7. 3074 14.90 7. 3121 7. 3127 7.3136 14.90 14.76 18.05 304 12-INCH B. L. RIFLED MOETAKS. No. SCO. Marks, 12 M K,j T Ej Length, 12"! Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 10". Applied loads. Total. Per square inch. Compres- Bion per inch. Succes.siTe compres- sion per inch. Permanent set. Sacceasive permanent set. Eeoiarks. Pounds. 1,000 2,000 3,000 4,000 !>,000 6|000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16,000 17, 000 18,000 19,000 20, 000 21, 000 22, 000 23, 000 24, OOO 25, 000 26, 000 27,000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 30, 1)00 40, 000 52,300 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24, 000 2.1, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 34, 000 35, 000 36, 000 37, OOO 38, 000 39, 000 40, 000 62, 300 Jneh. 0. . 00006 . 00011 . 00016 . 00021 . 00032 . 00037 . 00042 . 00060 . 00066 . 00061 . 00068 . 00075 . 00081 . 00087 . 00092 . 00099 .00107 . 00116 .00122 . 00131 . 00140 . 00150 . 00161 . 00171 . 00181 . 00196 . 00212 . 00229 . 00247 . 00267 . 00292 .00324 . 00368 . 00392 . 00428 . 00474 . 00527 . 00578 Inch. 0. . O0006 . 00005 . 00005 . 00005 . 00005 . 00006 . OOOOo . 00UO5 . 00008 . 00006 . 00005 . 00007 . 00007 . 00006 . 00006 . 00005 . 00007 . 00008 . 00009 . 00006 . 00009 . 00009 .00010 .00011 .00010 .00010 . 00017 . 00016 . 00017 .00018 . OOOBO . 00026 . 00033 . 00044 . 00024 . 00036 .00016 . 00053 .00051 Inch. Inch. Initial load. . 00003 . 00009 . 00016 . 00178 . 00363 . 00185 Ultimate strpngtli. Failed by triple Hexure. 12-INCH B, L. RIFLED MOETAES. 305 No. 861. Mark8/2MEgTB, Length, 10". " Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 5". Applied loada. Compres- sion per inch. Successive compres- aion per inch. Permanent set. Saocessive permanent net. ' Bemarks. Total. Per square incli. Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9, 000 to, 000 11,000 12,000 13, 000 14,000 15, 000 16, 000 17, 000 18,000 19, 000 20, 000 21, 000 22, 000 23, 000 24, 000 25, 000 26, 000 27, 000 28,000 29, 000 30,000 31, 000 32, 000 33, 000 34,000 35, 000 36, 000 37, 000 38, 000 39, 000 40,000 61, 460 Pounds. 1,000 ,2, 000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11,000 .- 12,000 13,000 14, 000 15,000 16, 000 17, 000 18,000 19, 000 20, 000 21, 000 22, 000 23, 000 24, 000 25, 000 26, OUO 27, 000 28,000 29, 000 30, 000 31,000 32, 000 33, 000 34, 000 35,000 36, 000 37, 000 38, 000 39, 000 40, 000 61,460 Inch. 0. . 00006 .00010 .00014 .00018 .00024 .00030 . 00036 . 00040 .00046 . 00052 .00058 .00064 .00070 . 0C078 . 00082 .00088 . 00094 . 00102 . 00110 .00118 . 00124 .00132 . 00140 .00150 . 00100 .00170 . 00184 . 00196 .00212 . 00232 . 00252 . 00274 . 00302 .00340 . 00374 .00404 .00448 .00492 .00554 Inch. 0. . 00006 .00004 .00004 . 00004 .00006 . 0OO06 . 00006 . 00004 .00006 . 00006 .00006 . 00006 .00005 . 00008 . 00004 . 00006 . 00U06 . 0U008 . 00008 . 00U08 . 00006 .00;J08 .00008 . 000 10 . 00010 . 00010 . 00014 .00012 .00016 .00020 .00.120 .00022 . 00028 .00038 . 00034 .00030 . 00044 .00044 . 0u062 Inch. 0. Inch. 0. Initial load. Ultimate streneth. 0. . 00004 .00(104 .00010 . 00006 .00016 . OU006 .00030 .00014 .00064 .00034 .00164 .00100 . 00352 .00188 Failed by triple flexure. H. Ex. 165 20 306 12-ik[ch b. l. rifled mortaes. Oast-Iron Body, No. 24. No. 4160. Marks, 12 ME^^TB. Length o£ stem, 23". Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 20". Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. Successive permanent set. Kemai-ks. Total. Per scraare in en. Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11,000 12,000 13, 000 14, 000 15, 000 16, 000 17,000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24, 000 25, 000 29, 580 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 19,000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24,000 26, 000 29, 580 Inch. 0. . 000055 .000105 . 000155 . 000205 . 000255 . 000385 . 000355 .000410 . 000470 . 000525 . 000585 . 000650 .000710 . 000775 .000855 .000915 . 001005 . 001090 . 001170 . 001265 . 001385 .001505 .001636 . 001800 Inch. 0. .000055 . 000050 . 0C0O30 . 000050 . 000060 . 000050 . 000050 . 000055 . 000060 .000056 . OOU060 . 000065 . 000060 . 000065 . 000080 . 000060 .000090 . 000085 .000080 . 000095 . 000120 . 000120 . 000130 . 000165 Inch. 0. Inch. 0. Initial load. Tensile 8treii|,Lli. .000005 . 000005 . 000025 . 000025 . 000035 . OOOOIO . 000050 . 000015 . 000085 '".'oooios" : 000035 ""V000020" .000160 .000055 . 000240 . 000080 .000360 . 000450 . 000120 . 000090 Fractured 11" from neck. Appearance, granular, with coarse, dark-colored spangles.' TENACITY SPECIMENS. General marks, 12 M K24 T Ei. No. of test. Additional marlLS. Diameter. Sectional area. Tensile strength. Specific gravity. Hardness. Total. Per square inch. 4i54 4455 4456 4457 MTsI MTaO MTjM MTcO Inch. 1.129 1.129 1.129 1.129 Sq. inch. 1.00 1.00 1.00 1.00 Pounds. 32, 980 32, 960 32, 210 84,270 Pounds. 32, 980 32, 960 32,210 34,270 7. 32,W 7. 3184 7. 3321 7. 3203 19.08 17.62 18.28 16.99 HEx. ./^^....51 2 12-INeH B. L. RIFLED MOETAKS. 307 No. 863. Marks/2MK^TE, Length, 12". ' Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 10". Applied loads. Compres- sion per inch. Successive compres- sion per inch. Permanent set. Successive permanent set. Bemarlcs. Total. Per square inch. Pounds. 1, 000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, OOO 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24, 000 25, 000 26, 000 27, 000 28, OOO 29, 000 30, 000 31,000 32, 000 33, 000 34,000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 58, SCO Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21,000 22, 000 23, 000 24, 000 25,000 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, OOO , 68, 560 Inch. 0. . 00004 . 00009 .00014 . 00019 . 00024 . 00O29 .00033 .00038 . 00043 . 00048 .00052 . 00059 .00064 . 00069 . 00075 . 00082 . 00087 . 00002 .00098 . 00103 . 00109 . 00116 .00122 . 00128 .00136 . 00142 .00149 . 00157 .00163 . 00171 .00180 .00191 . 00201 . 00212 . 00224 . 00235 .00248 .00264 . 00282 Inch. 0. . 00004 . 00005 . 00006 . 00005 . 00005 .00005 .00004 . 00005 . 00005 . 00005 . 00004 . O0007 . 00005 . 00005 . 00006 . 00007 . 00U05 . 00005 .00006 . 00005 . 00006 . 00007 .00006 . 00006 .00008 . 00006 .00007 . 00008 .00006 . 00008 .00009 . 00011 .00010 . 00011 .00012 . 00011 .00013 .00016 . 00018 Inch. 0. Inch. 0. Initial load. Ultimate strength. 0. . 00001 .00001 . 00005 .00004 .00008 .66063 . 00014 .00006 .00023 . 00009 .00043 . 00020 . 00088 .00045 Failed by triple flexure. 308 12-INCH B, L. RIFLED MOKTAES. Fo. 4161. Marks, 1^ ^b"^."^ ^ LeDgth of stem, 23". Diameter, 1".129, Sectional area, 1 square inch. Gauged length, 20". Applied loada. Elongation per inch. Successive elongation per inch. Permanent set. SocceseiTe permanent set. Ke marks. Total. Per Bquare ineh. Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13,000 14, 000 15, 000 16, 000 17, 000 18, 000 19,000 20, 000 21, 000 22, 000 23, 000 24, 000 25, 000 29,030 Pounds. 1,000 2,000 3, UOO 4,000 6,000 6,000 7,000 8,000 9,000 10,000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21,060 22, 000 23, 000 24,000 25, 000 29, 030 Inch. 0. . 000050 . 000105 . 000155 . 000210 . 000260 . 000320 . 000385 . 000450 . 000510 .000575 . 000645 .000720 . 000800 .000885 . 000965 . 001060 . 001185 .001290 .001410 .001585 .001765 . 001950 . 002200 .002505 Jncft. 0. . 000060 .000055 . 000050 . 000055 . 000050 .000000 .000065 . 000065 . 000060 . 000065 . 000070 . 000075 . 000080 . 000085 . 000080 .0000.15 . 000125 .000105 . 000120 .000175 .000170 .000195 .000250 . 000305 Inch, 0. Inch. 0. Initial load. Tensile strength. 0. . 000040 . OOOOiO . 000050 . 000010 . 000075 .' 000025 .000135 . 000060 . 000195 . 000060 . 000295 .000100 . 000475 . 000180 . 000760 . 000995 . 000285 .000235 Fractured 2J" from neck. Appearance, uniform granular. 12-INCH B. L. EIFLED MORTARS. 309 Marks, i210^_te. Length of stem, 15".75. Diameter, l".129. Sectional area, 1 square inch. Ganged length, 10". No. 4162. Applied loads. Elongation per inch. Snccessive elongation per inch. Permanent set. Snccessive permanent set. Eemarts. Total. Per square iDOh. Pounds. 1, (lOO 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, OUO 12, 000 13,000 14,000 15,000 16, 000 17, 000 18,000 19, 000 20,000 21,000 22,000 23, 000 24,000 25,000 29,990 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11,000 12,000 13, 000 14, 000 15, 000 16, 000 17, 000 18,000 19,000 20, 000 21, OCO 22, OOO 23, 000 24,000 26, 000 29,990 ttuli. 0. . 00006 .00011 .00016 .00022 .00028 .00033 .00039 .00046 .00052 .00058 .00065 . 00072 . 00082 .00089 .00100 .00110 . 00122 .00136 . 00151 .00109 . 00190 . 00218 .00348 .00288 Inch. 0. .00006 .00005 .00005 . 00006 .00006 , 00005 . 00006 . 00007 .00006 .00006 . 00007 .00007 .00010 . 00007 .00011 .00010 . 00012 .00014 .00015 .00018 .00021 .00028 .00030 .00040 Inch. 0. Inch. 0. Initial load. TensEe strength. 0. .00002 .00002 .00004 .00002 .00008 . 00004 .00012 . 00004 .00021 . 000O9 .00037 . 00016 .00059 . 00022 . 00100 .90130 . 00041 .00030 Fractured 7" from neck. Appearance, uniform granular. TENACITY SPECIMENS. General marks, 12 M E24 T E2. No. of test. Additional marks. Diameter. Sectional area. Tensile strength. Specific gravity. Hardness. Total. Per square inch. 4458 4459 4460 4461 4462 4463 BT3I BTiO BT5M BLjI BX,0 BLsM Inches. 1.129 1.129 1.129 1.129 1.129 1.129 8q. inch. 1.00 1.00 LOO 1.00 1.00 1.00 Pottnds. 30, 910 32,990 32,450 33,920 31, 030 32,650 Pounds. 30, 910 32, 990 32,450 33, 920 31, 030 32,650 7.3153 15.51 7. 3160 7. 3148 7.3183 15.51 15.28 15.43 310 12-INCH B. L RIFLED MOETAES. No. 864. 12 M Em T Ej B T. Marts, Length, 12". Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 10". Applied loads. Total. Per square incli. Compres- sion per inch. Successive compres- sion per inch. Permanent set. Saccessivo permanent set. Keraarks. Founds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12,000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19,000 20, 000 21, 000 22, 000 23, 000 24,000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 64,190 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24,000 25,000 26, 000 27,000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 34,000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 54,190 jTich. 0. . 00003 .00008 .00013 . 00018 . 00023 . 00028 .00033 . 00038 .00044 . 00049 .00055 . 00061 . 00068 . 00073 . 00078 . 00084 . 00002 .00098 .00104 .00111 . 00117 . 00123 . 00130 .00138 . 00148 .00157 .00166 . 00176 . 00187 . 00201 . 00214 . 00228 . 00248 . 00269 . 00302 . 00323 .00357 . 00392 .00442 Inch, 0. . 00003 . 00005 . 00005 . 00005 . 00005 . 00005 .00005 .00005 .00006 . 00005 . 00006 . 00006 . 00007 . 00005 . 00005 . 00006 .00008 . 00006 . 00006 .00007 . OOOOii . 00006 . 00007 . 00008 .00010 . 00009 . 00009 . 00010 . 00011 . 00014 . 00014 .00014 . 00020 . 00021 . 00033 .00021 . 00034 .00035 . 00050 Inch. 0. Inch. 0. Initial lo."-d. . 00020 . 00240 . 00140 Ultiraate strength. Failed by triple flexure. 12-INCH B. L. RIFLED MORTAES. 311 m. 865. Marks, 12 M^4jE, Length, 10". '° Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 5". Applied loads. Total. Per sQuare inch. Compres- sion per tncli. SuooessiTe compres- sion per incli. Permanent Successive permanent set. Bomarl^s. Fowula. 1,000 2,000 i),000 1,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22,000 23, 000 2i, 000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33,000 34,000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 64,580 Pounds. 1,000 2,000 3,000 4,000 S,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, OOO 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24, OOO 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 34, 000 35, OOO 36, 000 37, 000 38, 000 39, 000 40, 000 64,580 Znch. 0. . 00004 .00010 .00016 . 00020 . 00026 . 00030 . 00036 .00042 . 00046 . 00050 . 00066 . 00060 .00066 . 00074 . 00080 . 00084 .00090 . 00096 . 00106 . 00110 .00118 . 00126 .00134 .00144 . 00154 .00164 . 00174 .00188 . 00202 . 00226 .00242 .00266 . 00296 . 00330 . 00370 .00406 . 00446 .00496 .00546 Inch. 0. . 00004 . oooos . 00006 . 00004 . 00006 . 00004 . 00006 . 00006 . 00004 . 00004 . O0O06 . 00004 . 00006 . 00008 . 00006 .00004 . 00006 .00006 .oaoio . 00004 . 00008 ,00008 . 00008 . OOOIO . 000 IQ . 00010 . 00010 . 00014 .00014 . 00024 . 00016 .00024 .00030 . 00034 . 00040 . 00036 : 00040 . 00050 .00060 iTich. 0. Inch. 0. Initial loud. . 00004 .M002 . 00012 . 00006 . 00060 . 00036 . 00344 . 00188 tritimatc sfrenstli. Failed by triple flexure. 312 12-INCH B. L. RIFLED MOETAES. CAST-IRON BODT, NO. 25. No. 4165. Length of stem, 23". Diameter, 1".129. Sectional area, 1 square incli. Gauged length, 20". Applied loads. Elongation per InoIi. Snccessive elongation per inch. Permanent set. Huecessive permanent set. Eemarka. TotaL Per square inoli. Pmmds. 1,000 2,000 .3, 000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11,000 12, 000 13, 000 14, 000 15,000 16, 000 17,000 18, 000 19, 000 20,000 21,000 22,000 23,000 24,000 25,000 28,480 Pounis. 1,000 2,000 3,000 4,000 6,000 6,000 7,000 8,000 9,000 10,000 11,000 12,000 13, 000 14, 000 15, 000 16,000 17, 000 18,000 19,000 20, 000 21.000 22, 000 23,000 24,000 25, 000 28,480 Inch.. 0. .000050 . OOOIOO . 000150 .000200 . 000250 .000300 . 000355 .000410 .000480 . 000535 . 00U605 . 000660 .000735 .000810 .000900 . 000990 . 001100 .001205 . 001345 .001500 .001680 .001935 .002210 . 002625 Inch. 0. .000050 .000050 . 000050 .000050 . 000060 . 000050 .000055 . 000055 .000070 . 000055 .000070 . 000055 . 000075 .000075 . 000090 .000090 .000110 . 000105 . 000140 . 000155 .000180 .000255 . 000275 .000415 Inch. 0. Jncft. 0. Initial load. Tensile strength. 0. .000015, . 000015 .000020 .000005 . 000065 .oooois .000110 . 000055 . o66i95 . 000080 .000305 . 000115 . 000500 .000195 . 000875 . 001200 .000375 . 000325 Fractured 2" from neck. Appearance, granular mottled. TENACITY SPECIMENS. General marks, 12 M R25 T Ei No. of test. Additional marks. Diameter. Sectional area. Tensile strength. Specific gravity. Hardness. Total. Per square inuu. 4470 4471 4472 4473 MT4O MTjM MT.O Inches. 1.129 1.129 1.129 1.129 Sq. inch. 1.00 1.00 1.00 1.00 Pounds. 32, 590 30,740 29,930 33,470 Pounds. 32, 590 30, 740 29, 930 33,470 ?. 3094 7. 3072 7. 3093 7.3003 lfi.56 14 98 15.20 15.51 12-INCH B. L. EIFLED MORTARS, 313 No, 8G9. Marks, "MK„TE, Length, 12". Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 10". Applied loads. CompTes- sion per inch. Snccessive compres- sion per inch. Permanent set. Successive permanent set. Eemarks. Total. Per sqnare inch. Ponnds 1,000 2, Olio 3,000 4,000 6,000 6,000 7,000 8,000 9,000 10, 000 11,000 12,000 13, 000 14, 000 15, 000 16, 000 17, 000 18,000 lit, 000 20, 000 21, 000 22, 000 23, 000 24, Olio 25, 000 26, 000 27, 000 28, 000 29; 000 30, 000 31,000 32, 000 33, 000 34, 000 35,0110 36. 000 37, 000 38, 000 39, 000 40, 000 51, 290 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11,000 12,000 13, 000 14, 000 15,000 16, 000 17,000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24,000 25, 000 26,000 27, 000 28, 000 29, 000 30, 000 31, 000 32,000 33,000 34, 000 35, 000 36,000 37,000 88, 000 39, 000 40,000 51,290 Inoh. 0. .00005 .00010 . 00015 .00020 . 00025 . 00030 . 00034 .00039 .00044 . 00049 .00054 .00059 .00065 .00070 . 00075 .00080 . 00088 .00095 .00100 . 00105 .00112 . 00120 .00123 .00136 .00145 . 00157 .00168 . 00179 .00196 .00213 .00231 .00251 .00279 .00321 .00355 . 011392 .00437 .00485 .00538 Inch. 0. . 00005 .00005 . 00005 .00005 .00005 . 00005 .00004 . OOOOS . 00005 .00005 .00005 .00005 .00006 . 00006 .00005 .00006 . 00007 .00007 . OOOOS .00005 . 00007 .00008 .00008 .00008 . 00009 .00012 . 00011 . ooou .00017 .00017 .00018 . 00020 .00027 . 00042 .00034 .00037 .00045 .00048 .00053 Inch. 0. Inch. 0. Initial load. Ultimate strength. 0. .00002 . 00002 .00005 . 00003 . 00012 . 00007 . 00022 .00010 . 00059 . 06637 ' .00155 . 00096 . 00345 .00190 Failed by triple flexare. 314 12-mCH B. L. RIFLED MOBTAES, Fo. 4163. Length of stem, 23". Diameter, 1".129. Sectional area, 1 square incb. Gauged length, 20". Applied loads. Elongation per inch. Successive elonjjatlon per inch. Permanent set. Successive permanent set. Kemarks. Total. Per square inch. Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,009 10, 000 11, 000 12,000 13,000 14, 000 15, 000 10, 000 17, 000 18, 000 19, 000 20, 000 21,000 22, 000 23, 000 24, 000 25, 000 29, 620 Pounds. },000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 16, 000 16,000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24, 000 25, 000 29, 620 Inch. 0. .000050 . 000100 . 000150 .000200 . 000250 . 000305 . O0036O .000420 . 000485 .000540 . 000605 .000665 . 000735 . 000805 . 000890 . 000960 . 001060 . 001155 . 001260 .001395 . 001625 .001690 .002390 . 002640 Inch,. 0. . 000050 . 000050 . 000060 .000050 . 000050 . 000055 . 00(,055 . 000060 . OO00G5 .000065 . 000065 . 000060 . 000070 . 000070 . 000085 . 000070 .000100 . 000095 . 000105 .000135 . 000130 .000165 .000700 .000250 Inch. 0. Inch. 0. Initial load. Tensile strength. 0. . C00015 . 000015 . 000035 . 000020 . 000055 . 000020 . 000090 . 000035 . 000145 .000055 .000220 .000075 . 000350 .000130 .000560 .000735 . 000210 .000175 Fractured 5J" from neck. Appearance, uniform granular. 12-INCH B. L. EIFLED MOETAES. 315 No. 4164. Marks, 12 MEpTE, is ±11 Length of stem, 11". Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 10". Applied loads. Elonf^ation per inch. Suooessive elongation per incii. Permanent set. Successive permanent B^t. Eeniarlts. Total. Per square incli. Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9, 000 10, 000 11,000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19,000 20, 000 21, 000 22, 000 23, 000 24, 000 25, 000 32,410 Pounds. 1,000 2,0Q0 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11,000 12, 000 13, 000 14, "000 15,000 16, OuO 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24, 000 25. 000 32,410 Inch. 0. .00004 .00010 . 00015 .00020 . 00035 .00031 . 00037 . 00043 . 00049 . 00055 . 00061 . 00068 . 00076 . 00083 . 00092 .00101 .00111 .00121 . 00132 .00147 .00165 .00184 .00206 .00238 Inch. 0. . 00004 . 00006 . 00005 .00005 . 00005 . 00006 . 00006 .00006 . 000U6 . 00006 . 00006 . 00007 . 00008 . 00007 . 00009 . 00009 .00010 . 00010 . 00011 .00015 .00018 .00019 .00022 . 00032 Inch. 0. Inch. 0. Initial load. Tensile strength. 0. 0. .00002 . 00002 . 00006 . 60004 . 00011 . 00005 . 00017 . 66666 .00027 . 00010 .00042 . 00015 . 00068 .00092 . 00026 . 00024 Fractured 1" from neck. Appearance, uniform granular. TENACITY SPECIMENS. General marks, 12 M Rjs T E^. ITo.of test. Additional marks. Diameter. Sectional area. Tensile alrength. Specific gravity. Hardness. Total. Per sqnare inch. 4464 4465 4466 4467 4468 4460 BTsI BT4O BT5M ■ BLjI BL7O BLsM Inches. 1.129 1.129 1.129 1.129 1. 129 1.129 Sq. inch. 1.00 1.00 1.00 1.00 1.00 1.00 Pounds. 33, 720 33, 560 34, 130 33,890 35, 830 37, 600 Pounds. 33, 720 33, 560 34,130 33, 890 35, 830 37,600 7.2991 15.28 7.3073 7. 3104 7.3158 16.23 16.23 15.75 316 12-INCH B. L. RIFLED MOETAES. No. 866. Marts, ^2 ^bV^ Leugth, 12". ' Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 10". Applied loads. Total. Per squara inch. Compres- Bion per iacn. Successive compres- sion per incli. Permanent Successive permanent set. Kemarks. Founds. 1,000 2,000 3,000 4, 000 5,000 6,000 7,000 8,000 9,000 10, 000 1 1, 000 12, 000 13, 000 14, 000 15, 000 16, 1100 17, 000 18, (lOO 19, 000 20, 000 21, 000 22, 000 23, 000 24, 000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31, Olio 32, 000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 52, ISO Poundt. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 16, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, OOO 22, 000 23, 000 24, 000 25, 000 26, 000 27, 000 28, 000 29, 0011 30, 000 31, 000 32, 000 33, 000 34, 000 36, 000 36, 000 37, 000 38, 000 39, 000 40, 000 52, 160 0. .00004 . OOOlO . 00016 .00020 .00026 . 00032 .00037 . 00042 .00047 . 00052 .00058 . 00063 . 00068 . 00074 .00081 . 00086 . 00092 . 00098 .00104 . 00112 .00117 . 00125 . 00133 . 00142 . 00152 . 00160 . 00170 . 00182 .00194 . 00212 .00224 .00244 .00266 .00296 . 00323 .00348 .00385 . 00428 .00468 Inch, 0. . 00004 . 00006 . 00005 . 00005 . 00006 . 00006 . 00005 . 00005 . 00005 . 00005 . 00006 .00006 ' .00005 . 00006 . 00007 . 00005 . 00006 . 00006 . 00006 . 00008 .00005 . 00008 . 00008 . 00009 . 00010 . 00008 . 00010 . 00012 .00012 . 00018 .00012 . 00020 . 00022 .00030 .00027 . 00025 . 00037 .00043 . 00040 Inch, 0. Inch, 0. Initial load. . 00001 . 00001 , OO002 . 00052 . 00128 . 00076 .00142 Ultimate strength. Failed by triple fleiure. 12-INCH B. L. KIFLED MOETAES. 317 No. 8G7. Marks, ^2 ^^"^^ Length, 12". ' Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 10". Applied loads. Compres- sion per incn. Snuoessive compreS' Bion per inch. Permanent Bet. Snocessive permanent set. BemarkB. Total. Per squaie inch. Powiis. 1,000 2,000 3,000 4,000 6.000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14,000 15, OOO 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24,000 25, 000 26, 000 27, 000 28, 000 29, 000 30,000 31, 000 32, 000 33, 000 34,000 35, 000 36,000 37, 000 38, 000 39, 000 40,000 51,520 Poimdt. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20,000 21, 000 22, 000 23,000 24,000 25,000 26, 000 27, 000 28, 000 29,000 30,000 31,000 32, 000 33, 000 34,000 35,000 36,000 37, 000 38, 000 39, ODO 40, 000 51, 520 Iruih. 0. .00004 .00009 .00014 .00019 . 00024 .00029 .00034 .00039 .00044 .00049 .00054 . 00060 .00065 .00070 . 00076 . 00082 . 00089 . 00094 .00101 . 00108 .00113 .00122 . 00128 . 00137 .00149 . 00157 .00165 .00176 .00190 . 00204 . 00220 .00241 .00260 . 00296 .00321 . 00348 .00380 .00422 .00478 Inch. 0. .00004 .00005 . 00003 .00005 . 00005 .00005 . 00005 .00005 . 00003 . 00005 . 00003 . 00006 . 00005 . 00005 . 00006 •. 00006 .00007 . 00005 . 00007 .00007 .00005 . 00009 . 00006 .00009 .00012 .00008 . 00008 .00011 .00014 . 00014 . 00016 . 00021 .00019 .00036 .00025 .00027 .00032 .00042 .00036 Inch. 0. Inch. 0. InitiaUoad. Ultimate strength. .00001 .00001 .00001 0. ' .00008 .00007 .00012 .06664 . 00022 .00010 .00050 .00028 .00130 . 00080 . 00280 .00150 Failed by triple flexure. 318 12-INCH B. L. KIl'LED MORTAKS. No. 808, Marks, 12 VeJ^ Length, 10". '° Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 5". Applied loads. Total. Per square inch. Pounds. Founds. 1,000 1,000 2,000 2,000 3,000 3,000 4,000 4,.000 5,000 5,000 6,000 6,000 7,000 7,000 8,000 8,000 9,900 9,000 10,000 10, 000 11, 000 11, 000 12 000 12, 000 13, 000 13,000 U, 000 14, 000 15, 000 15, 000 16, 000 16, 000 17, 000 17, 000 18, 000 18, 000 19,000 19,000 20, 000 20, UOO 31, 000 21,000 22, 000 22, 000 23, 000 23, COO 24, 000 24, 000 25, 000 25, 000 26, 000 26, 000 27, 000 27, 000 28, 000 28, 000 29, 000 29, 000 30, 000 30, 000 31, 000 31, 000 82, 000 32, 000 33, 000 33, 000 34, 000 34, 000 35,000 , 35, 000 36, 000 36, 000 37, 000 37,000 38, 000 38, 000 39, 000 39,000 40, 000 40, 000 60, 650 60, 650 Compres- sion per inch. Successive compres- sion per inch. Permanent set. Successive permanent set. Bemarks. Inch. 0. . 00004 .OOOLO .00014 . 00020 . 00024 . 00028 . 00034 . 00038 .00044 . 0U048 . 00054 . 00058 . 00061 . 00070 . 00076 . 00082 . 00088 . 00094 . 00100 . 00104 . 00110 .00118 . 00124 . 00132 .00142 .00150 . 60160 . 00174 . 00188 , 00204 .00218 . 00234 . 00254 . 00388 . 00314 . 00330 .00376 . 00418 .00454 Injih. 0. .00004 . 00006 . 00004 . 00006 . 00004 .00004 . 00006 . 00004 . 00006 . 00004 .00006 . 00004 . 00006 . OO.JOO . 00006 .00006 . 00006 .00006 . 00006 . 00004 . 00006 . 00008 . 00006 . 00008 .00010 . 00008 .00010 . 00014 . 00014 . 00016 . 00014 . 00016 . 00020 . 00034 . 00026 . 00016 . 00046 . 00042 . 00036 Inch, 0. Inch. 0. Initial load. . 00002 . 00002 . 00012 . 00124 . 00204 Ultimate strength. Failed by triple flexure. 12-inch b. l. kifled mortaes. Cast-Ikon Body, No. 26. No. 429G. 319 Marks, ^"jj'lf ^' Length of stem, 23". Diameter, 1".126'. Sectional area, ,99 square inch. Ganged length, 20". Applied load. Elongation per inch. SnccesBive elongation per lucli. Permanent set. Saccessive permanent eet. Eemarks. Total. Per square iucn. Pounds. 990 1,980 2,970 3,960 4,950 5,940 6,930 7,920 8,910 9,900 10, 890 11, 880 12, 870 13, 860 14,850 15,840 16, 830 17, 820 18, 810 19,800 20, 680 Poimds. 1,000 2,000 8,000 4,000 6,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, OOO 19, 000 20, 000 20, 890 Inch. 0. . 000050 . 000105 .000155 . 000205 . 000260 . 000320 . 000380 . 000440 . 000505 .000570 . 000645 .000716 . O00S05 . 000895 . 000995 .001115 .001255 .001400 . 001585 Inch. 0. .000050 . 000055 .000050 . 000050 .000055 . 000060 .000060 . 000060 . 000065 . 000065 . 000075 . 000070 .000090 . 000090 . 000100 .000120 . 000140 .000145 . 000185 Inch. 0. Inch. 0. Initial load. Tensile Btrength. .000005 . 000005 .000045 .000040 .000075 .000030 . 000115 .000040 .000190 .000075 . 000310 . 000120 . 000500 . 000190 Fractured at middle of stem. Appearance, granular, coarse dark-colored spangles. TENACIT"S SPECIMENS. General marks, 12 M E26 T Ki. No. of test Additional marks. Diameter. Sectional area. Tensile strength. Specific gravity. Hardness. Total. Per square inch. 4504 4605 4508 4607 MTj I MTi MT5 M MTe Inches. 1.129 1.129 1.129 1.129 Sq.ineh. 1.00 1.00 1.00 LOO Pounds. 29, 520 28, 040 29,050 31,636 Pounds. 29,620 28,040 29, 050 31, 630 7. 2902 7.3054 7. 3063 7.2995 14.05 14.12 14.76 13.72 320 12-INCH B. L. KIFLED MORTABS. i^o. 877. Marks, ^^ m^j, t »• Length, 12". Diameter, 1".129, Sectional area, 1 square inch. Gauged lengtb, 10". Applied loads. Tntal Per square Compres- sion per inch. Successive compres- sion per inch. Permanent set. Successive permanent set. Kemarks. Poundt. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 2D, 000 21,000 22,000 23, 000 24,000 25, 000 26, 000 27, 000 28, 000 ■29, 000 30, 000 31, 000 32, 000 33, 000 34, 000- 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 SI, 100 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 0T)O 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24,01)0 25, 000 26,000 27, 000 28, 000 29, 000 30, 000 31, 000 32,000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 61,100 Inch. 0. . 00004 .00008 . 00013 .00018 . 00023 . OOOliS . 00033 . 00039 . 00044 . 000-19 . 00055 . 00061 . 00068 . 00073 . OOOSO . 00087 . 00093 .00101 .00108 .00116 .00122 .00131 . 00140 .00151 . 00165 . 00180 .00192 . 00208 . 00231 . 00258 . 00287 . 00318 . 003S1 . C0403 .00447 . 00487 .00544 . 00588 . 00662 Inch. 0. . 00004 . 00004 . 00005 . 00005 . 00005 . 00005 . 00005 . 00006 . 00005 . 00005 . 00006 . 00006 . 00007 . 00005 . 00007 . 00007 .00006 .00008 . 00007 . 00008 . 00006 . 00009 . 00009 . 00011 . 00014 . 00015 .06012 . 00016 . 00023 . 00027 . 00029 . 00031 . 00033 . 00052 .00044 . 60040 .00057 .00044 . 00074 Inch. Inch. 0. Initial load. . 00002 . 00032 . 00020 Ultimate strength. Failed by triple flexure. 12-INCH B. L. RIFLED MORTABS. No. 4297. 32 Marks, 12 M^SpTB, Length of stem, 23". Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 20". Applied loads. Elongation per inch. Saocessire elongation per inch. Permanent set. Successiye permanent set. Semarts. Total. Per square inch. Pmmix. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13,000 14,000 15,000 16,000 17,000 18, 000 19, UOO 20,000 21. 000 22,000 23,000 24,000 25,000 27,980 Pound*. 1,000 2,000 8,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000 11,000 12, 000 13,000 14, 000 15,000 16, 000 17, 000 18, 000 19, 000 20, 000 21,000 22, 000 23,000 24,000 25,000 27,980 IncA. 0. .000050 .000105 .000156 . 00U210 .000270 .000310 . 00039S .000460 . 000330 .000600 . 000680 .000760 .000845 .000935 .001046 .001165 .001295 . 001450 . 001630 . 001840 .002105 .002415 . 002800 .003290 Inch. 0. .000050 . 000055 .000050 ,000055 .000060 . 000070 .000055 .000065 .000070 . 000070 .000080 .000080 .000085 .900090 .000110 . 000120 .000130 .000155 .00l'180 , 000210 .000265 .000310 .000385 .000490 Inch. 0. Inoh. 0. Initial load. Tensile strength. . ooooos .000005 .000040 .000035 .000070 .000030 .000110 .000040 .000170 .000060 .000290 .000120 . 000455 .000165 .000745 .000290 .001255 .001650 .ooosio . 000395 Fractured 6".7 from neck. Appearance, uniform granular. B, Ex, 160 21 322 12-INCH B. L. RIFLED MORTAKS. No. 4298. 12MEmTEj Marks, , ^ j- Length of stem, 15".75. Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 10". Applied loads. Blon^ation per inch. Successive elouf^ation per Inoli. Permanent set. Successive permanent set. Keraarks. Total. Per square Inch. Pounds. 1„000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11,000 12,000 13, 000 14, 000 15, 000 16,000 17, 000 18, 000 19, 000 20, 000 21, 000 22,000 23, 000 24, 000 25, 000 28,270 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13,000 14, 000 15, 000 16,000 17, 000 18, 000 19, 000 20, 000 21, 000 22,000 23, 000 24,000 25, 000 28,270 Inch. 0. .00006 . 00012 . 00011 . 00022 . 00028 . 00033 .00039 .00047 . 000.53 .00060 .00068 .00077 . 00085 . 00093 .00105 .00115 .00128 .00143 .00160 . 00180 .00202 . 00235 . 00270 .00318 Inch. 0. .00006 . 00006 .00005 . 00005 .00006 . 0U005 .00006 .00008 . 00006 .00007 . 00008 .00009 .00008 . 00008 . 00012 . 00010 . 00013 . 00015 .00017 . 00020 .00022 . 00033 . 00035 .00048 Inch. 0. Inch. 0. Initial load. . « Tensile strength. .00001 .00001 . 00006 . 00005 . 00008 .00002 .oooii .00003 . 00017 .00006 . 00028 .00011 .00043 .00015 .00071 . 00028 .00118 . 00153 .66647 . 00035 Fractured 6" from neck. Appearance, uniform granular. TENACITY SPECIMENS. General marks, 12 M Ejs T E2. No. of test. Additional marks. Diameter. Sectional area. Tensile strength. Specific gravity. Hardness. Total. Per square inch. 4508 4509 4510 4511 4512 4513 BTai BTiO BTtM BLsI BL,0 BL,M Inches. 1.129 1.129 1.129 1.129 1.129 1.120 8q. inch. 1.00 1.00 1.00 1.00 1.00 1.00 Pounds. 29, 810 33,400 30, 380 30, 650 29, 970 31, 260 Pounds. 29, 810 33,400 30,380 30,650 29,970 31, 260 7. 3041 14.98 7. 3067 7. 3068 7.3082 14.76 15.20 15.13 12-INCH B. L. KIFLED MOETAES. 323 No. 878. Length, 12". ' Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 10". Applied loads. Total. Per aqnare Incn. Compres- sion per in oil. Successive compres- sion per inch. Permanent set. Sncceaeive permanent set. Kemarks. Pounds. 1,00U 2,000 3,000 4,000 S.OOO 6,000 7,000 8,000 9,000 10, 000 11,000 12, 000 13, 000 14, 000 15,000 10, 000 17, 000 18, 000 19, 000 20, 000 ■ 21, 000 22, 000 23, 000 24,000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31, OOD 32,000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 53,050 Pownds, 1,000 2,000 3,000 4, 00» 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13,000 14, 000 15, 000 16, 000 17, 000 18, OOO 19, 000 20, 000 21, 000 22, 000 23, 000 24,000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 34,000 35, OOD 36, 000 37, 000 38, 000 39, 000 40, 000 53, 050 Inch, 0. . 00005 .00010 . 00015 .00020 . 00025 . 00030 .00037 .00042 . 00048 . 00054 . 00060 . 00067 . 00072 . 00079 . 00085 . 00091 . 00099 . 00107 .00113 . 00121 .00130 .00138 . 00149 . 00159 .00170 . 00180 .00194 . 00210 . 00238 . 00258 . 00275 . 00298 .00333 . 00368 .00410 .00440 . 00490 . 00540 . 00601 Inch. 0. .00005 . 00005 . 00005 . 00005 . 00005 . 00005 . 06007 .00005 .00006 .00006 . 00006 . 00007 . OOOOS . 00007 . 00006 . 00006 . O0O08 . 00008 . 00006 . 00008 .00009 . 00008 . 00011 . 00010 . 00011 . 00010 . 00014 . 00016 . 00028 . 00020 . 00017 . 00023 . 00035 . 00035 . 00042 .00030 . 00050 . 00050 . 00061 Inch, Inch. 0. Initial load. . 00002 . 00009 .00007 . 00018 . 00081 . 00048 .00103 .00388 "Ultimate strergtb. Failed by triple flexure. 324 12-INCH B. L. RIFLED MOETAKS. No. 87a. Length, 9" A3. Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 5". Applied loads. Compres- sion per incb. Sucoessive compres- sion per inch. Permanent set. Successive permanent set. Remarks. Total. Per soTiare inch. Founds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23,000 24, OOO 25, OOO 26, 000 27, 000 28, 000 29, 000 30,000 31,000 32, 000 33, 000 34, 000 35, 000 36, 000 37, OOO 33, 000 39, 000 40, 000 63,680. Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19,000 20, 000 21, 000 22, 000 23, 000 24,000 25, 000 26, 000 27,000 28, 000 29, 000 30, 000 31, 000 32,000 33, 000 34, 000 36, 000 36, 000 37,000 38, 000 39,000 40, 000 63, 680 Inch. 0. . 00004 . 00010 .00014 . 00020 . 00024 .00030 . 00036 .00040 . 00046 .00052 . 00058 . 00064 . 00070 . 00076 . 00082 . 00090 . 00096 .00104 .00110 .00118 .00124 .00134 . 00144 .00154 . 00164 . 00176 . 00190 .00206 . 00226 .00246 .00266 . 00296 . 00334 .00378 . 00416 .00444 .00512 .00554 . 00604 Inch. 0. .00004 . 00006 .00004 . 00006 .00004 . 00006 . 00006 . 00004 .00006 .00006 . 00006 . 00006 . 00006 . 00006 .00006 . 00008 . 00006 . 00008 . 00006 . 00008 .00006 .00010 . 00010 .00010 . 00010 . 00012 . 00014 . 00016 .00020 .00020 . 00020 . 00030 . 00038 .00044 . 00038 . 00028 . 00068 .00042 . 00050 Inch. 0. Inch. 0. Initial load. Ultimate strength. 0. . 00002 .00002 .00006 . 00004 . 00014 . 00008 - . .00030 .00016 . 00076 . 00046 . 00194 .00118 . 00390 . 00196 Failed by triple flexure. 12-inch b. l. rifled mortars. Oast-Ieon Body, No. 27. 325 K"o. 4299. Marts/2MR,^TK, Length of stem, 23". Diameter, 1".129. Sectional area, 1 square inch. Gauged 16ngth, 20". Applied loads. Elonfjatlon per moh. Soocessive elongation per inch. Permanent set. Succesaiye permanent set. Hemarks. Total. Per square inoli. Pounds. 1.000 2, 000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11,000 12, 000 13, 000 14, OOO 15, 000 16, 000 17, 000 18,000 19, 000 20, 000 21,000 22,000 23, 000 24, 000 25, OOU 26,940 Founds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8.000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22,000 23, 000 24,000 26, 000 26, 940 Inch. 0. .000055 .000105 . 000170 . 000230 . 000285 .000340 .000405 . 000460 . 000515 . 000590 . 000655 . 000735 .000800 . 000885 . 000970 .001070 . 001185 .001305 .001445 .001680 . 001840 . 002060 .002400 .002860 Inch. 0. .000055 . 000050 .000065 . 000060 .000055 . 000055 . 000065 . 000055 . OOOOiS . O0UO75 .000065 . 000080 . 000065 . 000085 . 000085 . 000100 .000115 . 000120 . 000140 .000155 . 000240 .000220 . 000340 .000460 Inch. 0. Inch. 0. Initial load. Tensile strength. .000030 . 000030 . 000055 . 000025 .000085 . 000030 .OOOUO . 000025 .000155 . 000045 . 000240 .000085 .660360 . 000120 .000600 . 000240 . 000990 . 0U1360 . 000390 . 000370 Fractured 2J" from neck. Appearance, granular, in part dark mottled. TENACITY SPECIMENS. General marks, 12 M E27 T Ei No. of test. Additional marks. Diameter. Sectional area. Tensile strength. Specific gravity. Hardness. Total. Per square inch. 4524 4525 4526 4527 MT,I MTjO MTbM MTsO Inches. 1.129 1.129 1.129 1.129 Sq. inches. 1.00 1.00 1.00 1.00 Founds. 30, 260 29, 980 29, 010 ■31, 170 Founds. 30, 260 29, 980 29, 010 31, 170 7.2994 7. 2936 7. 3015 7.2972 14.33 15.05 15.20 14.40 326 12-INCH B. L. KIFLED MOKTAES. Fo. 885. Length, 12". ' Diameter, 1".129. Sectional area, 1 square inch. Ganged length, 10". Applied loads. Compres- sion per inch. SuocesaiTe compres. sion per inch. Permanent set. Successive permanent set. Eemarks. Total. Per square inch. Pounds. 1,000 2,000 .3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, OOO 12, 000 13, OOO 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24,000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 34, 000 36, 000 36, 000 37, 000 38, 000 39, 000 40, 000 50, 200 Pounds. 1,000 2,000 3,000 4,000 6,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14,000 15, 000 16, 000 17, 000 18,000 19, 000 20,000 21, 000 22, 000 23, 000 24, 000 26, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 50, 200 Inch. 0. . 00005 . 00010 . 00015 .00020 .00025 . 00030 .00035 . 00040 .00046 . 00050 . 001)67 .00062 . 00068 .00072 . 00079 .00084 . 00090 . 00098 .00104 .00111 .00118 .00125 .00132 .00140 . 00152 . 00162 . 00174 .00180 .00203 . 00228 .00243 .00265 . 00293 .00328 .00371 . 00398 .00448 . 00490 .00650 Inch. 0. . 00005 .00005 . 00005 .00005 .00005 . 00005 . 00005 . O0OU5 . 00005 . 00005 .00007 . 00005 . O0UO6 . 00004 .00007 . 00005 . 00006 . 00008 .00006 . 00007 . 00007 . 00007 . 00007 . 00008 .00012 .00010 . 00012 .00012 .00017 . 00025 .00015 . 00022 .00028 . 00035 .00043 .00027 . 00050 .00042 . 00060 Inch. 0. Inch. 0. Initial load. • intimate strength. 0. . 00002 . 00002 , 00007 . 00006 . 00011 . 00004 . 00022 .00011 .00068 . 00036 . 00145 . 00087 . 00350 . 00205 Failed by triple flexure. 12-XNCn B. L. RIFLED MORTAKS. No. 4300. 327 Marks, ^''^^/^ Length of stein, 23". Diameter, 1".129. Sectional area, 1 square inch. Ganged length, 20". Applied loads. SncoBBsiTe elongation per inch. Permanent set. SuocessiTe permanent set. Kemarks. Total. Per square iDCh. per inch. Pound). 1,000 2,000 3,000 4,000 5,000 6,000 7,0C0 8, 000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19,000 20, 000 31,000 22, 000 23, 000 24, 000 25,000 27,400 Poundt. 1,000 2,000 3,000 4,000 6,000 6,000 7,000 8,000 9, 000 10, 000 11, 000 12,000 13,000 14,000 15, 000 16, 000 17, 000 18,000 19, 000 20, 000 21, 000 22,000 23, 000 24,000 25, 000 27,400 Inch. 0. .000050 .000100 . 000155 .000210 . 000270 .000335 . 000395 .000455 .000525 .000600 . 000675 . 000740 . 000830 .000930 .001015 . 001125 . 001250 . 001390 .001555 .001745 .001980 .002235 .002590 .003000 Inch. 0. .000050 .000050 .000055 .000055 . 000060 .000065 . 000060 . 000060 . 000070 .000075 .000075 .000065 . 000090 ' .000100 .000085 .000110 .0'00125 . 000140 . 000165 .000190 .000235 . 000255 . 0003SS .000410 Inch. , 0. Inch. 0. Initial load. Tensile strength. .000005 .000005 . 000040 . 000035 . 000060 .000020 .000100 .000040 . 000155 .000055 .000240 . 000085 .000395 . 000155 . 000645 . 000250 .001080 . 001405 . 000435 .000325 Fractured 5J" from neck. Appearance, uniform granular. 328 12-INCH B. L. EIFLED MOETAES, No. 4301. Marks, "W^«» Length of stem, 15".75. Diameter, 1".129. Sectioual area, 1 square inch. Gauged length, 10". Applied loads. Elongation per inch. Snoces»ive elongation per inch. Permanent set. Snccessive permanent set. Scmarks. Total. Per sqnoie jnoh. Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11,000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18,000 19, 000 20,000 21, 000 22,000 23, 000 24,000 25,000 27, 030 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 £0, 000 21, 000 22, 000 23, 000 24,000 25, 000 27, 030 Inch. 0. .00006 .00011 . 00016 .00021 . 00027 .00033 . 00039 . 0004S . 00050 .00058 .00066 . 00072 .00080 . 00089 . 00099 .00109 .00121 .00133 .00148 . 00168 . 00187 . 00213 . 00242 . 00287 Inch. 0. .00006 . 00005 . 00005 . 00005 . 00006 . 00006 . 00006 . 00006 . 00005 . 00008 . 00008 . 00006 .00008 . 00009 .00010 .00010 . 00012 .00013 .00013 .00020 . 00019 . 00026 .00029 . 00045 Inch. 0. Inch, 0. Initial load. Tensile strength. 0. . 00002 .00002 . 00006 .00004 .00009 .00003 . 00015 .00006 .00021 . 00006 .00036 .00015 . 00059 .00023 . 00098 .00131 .66639 .00033 Fractured 7".4 from neck. Appearance, uniform granular. TENACITY SPECIMENS. General marks, 12 M E27 T E2. No. of test. Additional marks. Diameter. Sectional area. Tensile strength. Specific gravity. Hardness. Total. Per square inch. . 4528 4529 4530 4631 4532 4533 BT.I B TjO BT5M BLsI BLjO BLall Inehcs. 1.129 1.129 1.129 1.129 1.129 1.129 Sq. inch. 1.00 1.00 1.00 1.00 1.00 1.00 Poimds, 29, 420 32,690 30, 070 29, 960 31, 240 31,500 Pounds, 29,420 32, 690 30,070 29,960 31,240 81, 500 7.2988 15.05 7. 3041 7. 3045 7.3062 14.90 14.83 15. 05 12-INCH B. L. EIFLED MORTARS. 329 No. 880. Length, 12". ' Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 10". Applied loads. Elongation per inch. Successive elongation -per inch. Permanent set. Snccessive permanent set. Eemarks. Total. Per sqaare inoli. Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21,000 22, 000 23, 000 24,000 25, 000 26,000 27,000 28,000 29, 000 80,000 ai.ooo 32,000- 33,000 34, 000 35,000- 36, 000 37,000 38, 000 39, 000 40,000 60,420 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11,000 12, 000 13, 000 14, 000 15,000 16,000 17, 000 18,000 19, 000 20, 000 21, OOO 22,000 23, 000 24, 000 25, 000 26, 000 27, 000 28. 000 29,000 30, 000 31, 000 32, 000 33,000 34, 000 35, 000 36,000 37, 000 38,000 . 39, 000 40, 000 50,420 Inch. 0. . 00004 . 00009 .00014 . 00019 . 00024 .00030 . 00036 .00042 .00047 . 00052 .00058 .00065 . 00071 .00077 . 00084 .00091 . 00098 . 00104 .00111 < 00120 .00129 . 00137 .00147 . 00166 . 00167 .00179 . 00191 .00207 .00222 . 00241 .00267 .00295 .00321 . 00364 .00400 .00438 . 00482 . 00531 .00581' Inch. 0. . 00004 .00005 .00005 . 00005 . 00005 . 00006 . 00006 . 00006 .00005 . 00005 . 00006 . 00007 . 00006 . 00006 .00007 . 00007 .00007 . 00006 . 00007 . 00009 .00009 .00008 . 00010 .00009 .00011 . 00012 . 00012 . 00016 . 00014 . 00019 . 00026 . 00028 . 00026 .00033 . 00046 .00038 . 00044 . 00049 .00060 Inch. 0. Inch. 0. Initial load, intimate stren^li. . 00001 . 00001 . 00002 . 00001 . 00008 .00006 .00015 . 00007 . 00031 .00016 .00070 . 00039 .00170 . 00100 .00371 .00201 Failed by triple flexure. 330 12-TNCH B. L. RIFLED MORTARS. No. 887. Marks, 12 u^, t r. Length, 8".31. diameter, 1".129. Sectional area, 1 square inch. Gauged length, 5". Applied loads. Compres- sion per inch. Successive compres- sion per inch. Permanent set. Successive permanent set. Hemarks. Total. Per Bqaare incii. PounH.s. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11,000 12, 000 13, 000 14, 000 15,000 16, 000 17,000 18, 000 19, 000 20, 000 21, 000 22,000 23, 000 24, 000 25, 000 26, 000 27, 000 28,000 29, 000 30, 000 31, 000 32, 000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 70,040 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9, 000 ' 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22,000 23, 000 24,000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 34, 000 35, 000 36, 000 37,000 38, 000 39, UOO 40. 000 70,040 Inch. 0. . 00006 . 00010 .00016 . 00020 .00026 . 00030 . 00036 . 00044 .00048 . 00054 .00060 .00064 . 00070 . 00076 . 00082 . 00090 .00096 .00102 .00108 . 00116 .00122 . 00130 .00140 .00156 . 011162 .00172 .00186 .00200 .00220 .00240 . 00250 .00284 .00316 .00350 . 00388 .00424 .00470 .00530 .00580 Inch. 0. . 00006 . 00004 . 00006 .011004 . 00006 . 00004 . 00006 . 00008 .00004 . 00006 .00006 , . 00004 .00006 . 0O006 . 00006 .00008 . 00006 . 00006 . 00006 . 000O8 . 00006 . 00008 .00010 .00010 .00012 . 00010 .00014 .00014 . 00020 .00020 .00016 .00028 . 00032 .00034 . 00038 .00036 .00046 . 00060 .00050 Inch. 0. Inch. 0. Initial load. Ultimate strengtli. .00002 .00002 . 00004 .00002 .00010 . 00006 .00016 . 00006 .00028 . 00012 . 00066 .00038 . 00168 . 00102 . 00364 . 00196 Failed by triple flexure. Marks, ^2 Mi^ ME, Length of stem, 23". Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 20". 12-lnch b. l. kifled moetaes. Cast-Ieon Body, No. 28. No. 4197. . 331 Applied loads. Elongation per incli. Successive elongation per inch. Permanent set. Successive permanent set. Eamarks. Total. Per square inch. Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23,000 24,000 25, OUO 25, 120 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12,000 13, 000 14,000 15, 000 16, 000 17, 000 18, 000 19, 000 20,000 21, 000 22, 000 23, 000 24,000 25, 000 25, 120 Inch. 0. .000050 .000100 ,000150 .000200 . 000230 .000305 . 000360 .000410 .000470 . 000535 .000600 . 000670 .000740 . 000815 .000905 . 000990 . 001090 . 001 2O0 .001325 . 001475 , 001655 . 001880 .002165 . 002490 Inch. 0. . 000050 .000050 . 000050 . 000050 . 000050 .000065 .000055 . 000050 . 000060 .000065 .000065 . 000070 .000070 . 000075 .000090 . 000085 .000100 .000110 .000125 . 000150 . 000180 . 000225 .000285 .000325 Inch. 0. Inch. 0. Initial load. Tensile strength. 0. . 000025 .000025 .000045 .000020 .000065 .000020 .000110 .000045 .000176 .000065 .000275 .000100 . 000460 .000185 . 666790 .001055 . 000330 . 000265 Fractured at middle of stem. Appearance, granular ; stellar spots. TENACITY SPECIMENS. General marks, 12 M E28 T Ei. No. of test. Additional marks. Diameter. Sectional area. Tensile strength. Specific giavity. Hardness. Total. Per square inch. 4514 4515 4516 4517 MT,I MTiO MT5M MTsO Inches. 1.129 1.129 1.129 L129 Sq. inch. 1.00 1.00 1.00 1.00 Pounds. 29, 890 28,440 29, 970 32, 460 Pounds. 29, 890 29,440 29, 970 32,460 7.3076 7.3133 7. ai50 7.3133 14.54 14.69 15.61 14.69 332 12-INCH B. L. EIFLED MOETAES. No. 882. Marks, 12 VS^«' Length, 12". ' Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 10". Applied loads. ■^ot-'- ^'inX" Compres- sion per inch. Sncce^sive compres- sion per incn. Permanent set. Saccessive permanent set. Bemarks. Pounif. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, OOO 12, 000 13, 000 U, 000 15, 000 16, 000 17, 000 18, 000 10, 000 20, 000 21, 000 22, 000 23, 000 24, 000 2,'i, 000 26, 000 27, 000 28, 000 29, ODO 30, 000 31, 000 32, 000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 51, 960 Pounds, 1,000 2,000 3,000 4,000 6,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12,000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24,000 25, 000 26, 000 27, 000 28, 000 29, OOO 30, 000 31, 000 32, 000 33, 000 34,000 35, 000 36, 000 37, 000 38, 000 39, 000 40,000 51, 960 Inch. 0. . 00006 . 00011 .00016 .00021 .00026 .00031 .00036 . 00041 . 00047 . 00053 . 00058 . 00063 . 00069 . 00076 . 00081 . 00087 . 00099 .00107 . 00115 . 00122 .00129 . 00137 . 00147 . 00157 .00167 . 00178 . 00191 .00209 . 00230 . 00248 . 00270 . 00287 .00347 . 00383 . 00411 . 00462 . 00S08 . 00561 Inch, 0. . O0O06 . 00005 . 00005 . 00005 . 00005 . 00005 . 00005 . 00005 . 00006 . 00006 . 00005 . 00003 . 00006 .00007 .00005 . 00006 . 00006 . 00006 . 00008 . 00008 .00007 . 00007 . 00008 . 00010 . 00010 .00010 .00011 . 00013 . 00018 . 00021 .00018 . 00022 . 00017 . 00060 . 00036 .00028 . 00051 . 00046 . 00053 iTich, 0. Inch, 0. Initial load. . 00002 . 00002 . oooos . 00025 . 00061 . 00036 . 00174 .00113 Ultimate strcngtli. Failed by triple flexure. 12-INCH B. L. RIFLED MOETAES. 333 No. 4198. Marks, 12 MR»TE. Length of stem, 23". Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 20". Applied loads. Successive elongation per inch. Permanent set. Successive permanent set. Remarks. Total Per sqnare incn. per inch. Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, OOO 12,000 13,000 14,000 16, 000 16, OOO 17, OOO 18.000 19, 000 20, 000 21, 000 22, oof) 23,000 24,000 25,000 26,170 Pounds. 1,000 2,000 3,000 4,000 6,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23,000 24,000 25, 000 26,170 Inch. 0. . 000050 . 000100 .000160 . 000220 .000280 . 000335 .000305 .000450 . 000525 .000585 . 000660 .000740 . 000810 . 000900 . 00U995 .001095 . 001220 .001360 . 001500 .001700 . 001910 .002195 .002520 .002865 Inch. 0. . 000050 . 000050 . 000060 . 000060 . 000060 . 000056 .000060 . 000055 ■000075 .000060 . 000075 . 000080 .000070 . 000090 . 000095 . 000100 .000126 . 000130 .000160 .000200 .000210 .000286 .000326 .000345 Inch. 0. Inch. 0. Initial load. Ultimate strength. 0. .000035 .000035 .000060 .000025. . oooogo .000030 . 000146 . 000056 .000230 . 000085 . 000360 . 000180 . O006OD . 000240 .001030 .001310 . 000430 .000280 1 Fractured 5" from neck. Appearance, uniform granular. 334 12-INCH B. L. RIFLED MOETAES. No. 4199. Marks, 12m^i^,^te, Length of stem, 15".7o. Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 10". Applied loads. EloBgation per inch. Snccessive elongation per inch. Permanent set. Successive permanent set. Kemarks. Total. Per square inch. Pounds. 1,000 2,000 3,000 4,000 6,000 6,000 7,000 8,000 9,000 10,000 11, 000 12,000 13, 000 14, 000 15, 000 16, 000 17,000 18, UOO 10, 000 20,000 21, UOO 22,000 23, 000 24,000 25,000 28, 180 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11,000 12, 000 13,000 14, 000 15, 000 10,000 17, 000 18,000 19, 000 20, 000 21, 000 22,000 23,000 24,000 26, 000 28, 180 Inch. 0. .00006 .00011 . 00016 . 00021 .00026 . 00032 .00038 .00044 .00050 .00057 .00064 . 00072 . 00079 . 00088 .00097 . 00107 .00117 . 00129 .00142 .00158 .00177 .00203 .00231 .00265 Inch. 0. .00006 t . 00005 . 00005 . 00005 .00005 . 00006 .00006 .00006 .00006 .00007 . 00007 . . 00008 .00007 .00009 .00009 .00010 . OOOIO . 00012 . 00013 .00016 . 00019 .00026 .00028 .00034 Inch. 0. Inch. 0. Initial load. Tensile strength. 0. .00003 . 00003 .00006 . 00003 . 00008 . 00002 . 00022 .00004 . 00019 . 00007 . 00032 .00013 . 00052 .00020 . 00088 .00113 . 00036 .00025 Fractured J" from middle of stem. Appearance, uniform granular. TENACITY SPECIMENS. General marks, 12 M Ezs T E2. No. of test. Additional marks. Diameter. Sectional area. Tensile' strength. Specific gravity. Hardness. Total. Per square inch. 4518 4519 4520 4821 4522 4523 BT3I BT4O BT5M BLsI BL7O BL,M Inches. 1.129 1. 129 1.129 1.129 1.129 1.129 Sq.inch. 1.00 1.00 1.00 1.00 1.00 1.00 Pounds. 30, 680 32, 050 30, 040 30,620 31,640 31, 970 Pounds. 30, 680 32, 050 30,040 30, 520 31,640 31,970 7. 3132 16.20 7.3137 7.3168 7.3157 15.13 14.98 14.47 12-INCH B. L. RIFLED MOETAKS. 335 No. 883. Mark8/2ME*,TE, Length, 12". Diameter, 1".129. Sectional area, 1 square inch. Ganged length, 10". Applied loads. Total. Per square Idcd. Conipres- sioD per inch. Successive compres- sion per incfi. Permanent set'. Successive permanent set. Kemarks. Founds. 1,000 2,000 3,000 4,000 5,000 6.000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 16, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23,000 24,000 25,000 26, 000 27,000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 34,00» 35,000 36,000 37,000 38, 000 38,000 40,000 52,100 Pounds, 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11,000 12,000 13, 000 14, 000 15, 000 16, 000 17, 000 18,000 19, 000 20, 000 21, 000 22, 000 23, 000 24,000 25, 000 26, 000 27, COO 27,000 29, OOO 30, 000 31,000 32,000 33, 000 34, 000 35, OOO 36, 000 37, 000 38, 000 39, 000 40, 000 52,100 ' Inch. 0. . 00005 . 00010 . 00016 .00020 . 00025 . 00030 . 00035 .00040 .00047 . 00052 . 00059 . 00065 . 00071 . 00077 .00082 . 00089 . 00098 . 00104 . 00111 .00118 .00128 .00135 . 00143 . 00152 . 00162 . 00174 . 00186 . 00201 . 00221 .00240 . 00255 . 00283 . 00312 .00350 . 00390 . 00420 .00460 . 00517 .00578 Inch. 0. . 00005 .OOOOS . 00006 . 00004 . 00005 . OOOOS . 00005 . 00006 . 00007 . 00005 . 00007 . 00006 . 00006 .00006 .00005 . 00007 . 00009 . 0O0O6 . 00007 . 00007 . 00010 .00007 . 00008 .00009 .00010 .00012 . 00012 . 00015 . 00020 . 00019 .00015 . 00028 . 00029 . 00038 .00040 . 00030 . 00040 . 00057 . 00061 Inch. 0. Inch. 0. Initial load. . 00002 . 00p02 .00007 . 00013 . 00006 . 00029 . 00016 . 00069 .00040 .00170 . 00101 . 00364 . 00194 Ultimate strength. Failed by triple flexure. 336 12-INCH B. L. KIFLED MOETAKS. No. 884. Marks, 12 M^K|iTE» Length, 10". " Diameter, 1".29. Sectional area, 1 square inch. Gauged length, 5". Applied loada. Total. Per square inch. Comprea- sion per iDch. Successive compres- sion per inch. Permanent set. Successive permanent set. Kemarks. Pounds. 1,000 2.000 3,000 4, 000 6, oeo 6,000 7,000 8,000 9,000 10, 000 11,000 12, OUO 13, 000 U, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, (100 21, 000 22, OuO 23, OOO 24, 000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31,000 32, 000 33, 000- 34, 000 35, 000 36, 000 37, 000 3f>, 000 39, 000 40, 000 61, 040 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8, 0(10 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24,000 25, 000 26, 000 27, 000 28, 000 29, OOO 30, 000 31, 000 32, OllO 33, 000 34, 000 35, 000 36, OOO 37, 000 38, 000 39, 000 40, 000 61, 040 Inch. I). .00004 .00010 . 00016 . 00020 . 00024 . 00U28 .00034 . 00040 . 00044 .00050 . 00056 . 00062 . 00068 .00074 . 00080 . 00092 . 00100 . 00106 . 00114 . 00122 . 00130 . 00138 .00148 .00160 .00170 .00184 .00198 . 00218 . 00238 . 00260 . 00230 . 00314 . 00348 . 00386 . 00420 . 00470 .00512 .00566 Inch. 0. . 00004 .00006 . 00006 . 00004 . 00004 . 00004 . 00006 . 00006 . 00004 . 00006 . 00006 . 00006 . 00006 . 00006 . 00006 . 00006 . 00006 . 00008 . 00006 . 00008 . 00008 . 00008 . 00008 . 00010 . 00012 . 00010 . 00014 .00014 . 00020 . 00020 . 00022 . 00020 . 00034 . 00034 . 00038 .00034 . 00050 .00042 .00054 Inch. 0. Inch, 0. Initial load. . 00006 .00010 . 00004 . 00016 . 00068 . O0042 . 00168 . 00100 . 00356 . 00188 Ultimate strength. Failed by triple flexure. 12-inch b. l. eifled mortars. Oast-Ieon Body, No. 29. 337 No. 4159. Marks, ^^VlJ^'"' Length of stein, 23". -Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 20". AppUod loads. Eloiijralion pel iutti. Successive eloriffalinn per iucb. Peraianent set. Saccessive permaneut set. Kemarks. Total. Per square inch. Pounds. 1,000 2,000 3,000 4,000 6,000 6,000 7,000 8,000 9,000 10, 000 11,000 12, 000 13,000 14,000 15, 000 16, 000 17, 000 18, 000 19,000 20, 000 21, 000 22, 000 23,000 24, 000 26, 000 27, 510 Pounds. 1,000 2,000 S,000 4,000 5, 000 6,000 7,000 8,000 9,000 10,000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21,000 22, 000 23, 000 24,000 25, 000 27, 510 Inch. 0. . 000060 .000100 .000150 . 000200 . 000250 . 000305 .000355 .000415 . 000475 . 000630 . OOOCOO . 000060 . 000730 .000810 . 000885 . 000085 .001085 . 001205 .001320 . 001470 . 001669 . 001920 .002170' . 002010 Inch. 0. .000050 . 000050 . 000050 . 000050 . 000050 . 000055 .000050 . 000060 .000060 . 000055 . 000070 . 000080 . 000070 . 000080 . 000075 . 000100 . 000100 . 000120 .000115 . 000150 .000190 .000260 .0002.50 . 000440 Inch. 0. Inch. 0. Initial load. Tensile strength. 0. .000025 . 000025 . 000040 . 000015 . 000075 . 000035 .o'ooiis . 000040 .000180 .000065 .000305 .000125 .000505 . 000200 . oooseo . 001210 . 000355 . 0003GO . Fractured 2" from the neck. Apiiearance, granular mottled. TENACITY SPECIMENS. General marks, 12 M Eog T R,, No. of test. Adililinual niarlia. Diniiioter. Sectional area. Tensile strength. Specific gravity. Hardness. Total. Per square inch. 4480 44S1 44-'2 4483 M Tg I M T4 M To M M Tb Inches. 1.129 1.129 1.129 1.129 Sq. inch. 1.00 1.00 1.00 1.00 Pounds. 31,640 30,010 28, 400 32, 720 Pounds. 31,540 7.3389 30, 010 7. 3327 28, 400 7. 3349 32,720 7.3350 15.69 14.98 16.51 14.98 H. Ex. 165- -22 338 12 -INCH B. L. RIFLED MOETAES. No. 872. Marks, 12 M^'f^'^K, Leugth. 12". ' Diameter, 1".129. Sectional area, 1 square inch. Gauged lengtb, 10". Applied loads. Compres- sion per inch. Successive compres- sion per inch. Permanent set. Succes-^ire permanent. set. Eemarka. 1 Total. Per square inch. Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11,000 12, 000 13, 000 14,000 15, 000 16, 000 17,000 18,000 19, 000 20, 000 21, 000 22, 000 '23, 000 24, 000 25, 000 26,000 27, 000 ' 28,000 29, 000 30, 000 31, OOO 32, 000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40,000 51, 460 Pounds. 1,000 2,000 3,000 4,000 6,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, OOb 14, 000 15, 000 16, 000 17-. 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24,000 25, 000 26, 000 27, 000 28,000. 29, 000 30, 000 31, 000 32, 000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 51,450 Inch. 0. . 00004 . 00009 . 00013 . 00018 . 00023 .00028 . 00032 . 00037 . 00042 . 00048 . 00053 . 00058 .00063 . 00069 . 00073 . 00079 .00084 . 00091 . 00099 . 00105- .00112 . 00120 .00129 . 00139 . 00149 . 00160 .00172 . 00189 . 00203 . 00232 . 00252 . 00278 .00312 . 00363 . 00403 . 00442 . 00483 .00634 .00590 Inch. 0. . 00004 .00005 . 00004 . 00005 . 00005 . 00005 . 00004 . 00005 . 00005 . 00006 .00005 . 00006 .00005 . 00006 .00004 . 00006 . 00005 . 00007 . 00008 . 00006 . 00007 . 00008 .00009 .00010 . 00010 .00011 . 00012 . 00017 . 00014 .00029 . 00020 . 00026 . 00034 .00051' . 00040 . 00039 .00041 . 00051 .00056 Inch. 0. Inch. 0. Initial load. Critimate strength. 0. .0.001 .OOJOl . 00003 . OOOO'i .000)2 .00009 . 00025 .00013 '""'." 00069 "■ "".00014' .00193 .00121 . 00393 .00200 Failed by triple flexure. 12'-INCH B. L. RIFLED MORTAES, No. 4157. 339 Length of stem, 23". Diameter, 1",129. Sectional area, 1 square inch. Gauged length. 20". Applied loads. EloDgation per inch. Successive elongation per "inch. Permanent set. Successive 1 Total. Per sqnare inch. poimanent ! Eemarks. set. ! 1 Pounds. 1,000 2,000 3,000 4,000 5,000 •6,000 7,000 8,000 9,000 10, 000 11,000 12,000 13, 000 14, 000 15, 000 16, 000 17, OUO 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24, 000 25, 000 26, 700 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13,000 14, 000 15, 000 16, 000 17, 000 18,000 19, 000 20, 000 21, 000 22, 000 23,000 24, 000 35, 000 26, 700 Inch. 0. .000050 .000100 . 0U0150 . 000200 . 000250 . 000305 . 000355 .000410 . 000485 . 000545 . 000600 . 000670 .000740 .000815 . OOOOOO .000990 .001099 . 001200 . 001320 . 001405 .001635 . 001820 . 002055 .002375 Inch. 0. . 000050 .000050 .000050 . OOOiJO . OOOuoO . 000055 .000050 . 000055 . 000075 ,000060 . 000055 . 000070 . 000070 .000075 . 000085 .000090 .000100 .000110 . 000120 . 000145 .000170 . 000185 .000235 . 000320 Inch. 0. Inch. 0. Initial lo.id. Tensile strengtti. 0. . 000020 . 000020 . 000040 . 000020 . oonoori . J0025 .00J105 '".000160' .0000 to ".000055" . 000260 . 000100 .000440 .000180 . 000740 .000^40 .OOI'SOO . 000200 Fractured at middle of stem. Appearance, uniform granular. 340 12-INCH B. L. RIFLED MOKTAES. No. 4158. Marks, laMK^/rB^ ±S 111 Length of stem, 15".75. Diameter, V'.VJid. Sectional area, 1 square inch. Gauged length, 10". Applied loads. !Elongation per inch. Successive eloDgatioa per inch. Permanent set. Successive permimeut set. Eomaiks. Total. Per square inoh. Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13,000 ■ 14,000 15, 000 16, 000 17,000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24, 000 25, 000 25, 640 Pounds. l,t)00 2,000 3,000 4,000 5,000 6,000 ' 7,000 8,000 9,000 10, 000 11, 0»0 • 12,000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19,000 20, 000 21,000 22, 000 23, 000 24, 000 25,000 25, 610 Inch. 0. .00005 . 00010 . 00015 . 00020 .00026 .00031 . 00036 . 00041 .00048 . 00054 .00060 . 00OB6 .00073 .00081 . 00080 . 00008 . 00107 00117 ' Inch. 0. . 00005 . 00005 . 00005 .00005 . 000116 . 00005 .00005 . 00005 . 00007 . 00006 . 000116 .00006 . 00007 . 00008 . 00008 . 00009 . OO0C9 nnmn Inch. 0. Inch. 0. Initial load. Tensile strength. 0. .00002 . 00002 . 00006 . 00004 . 00007 . 00001 . 00011 . 00001 .00018 . 00007 .00130 1 .00013 .00142 1 .00012 .00169 1 .00017 .00179 i .00020 .00201 .00022 .00239 .00038 . 00028 .oooio . 00044 .00010 . 00071 .00099 . 00027 . 00028 Fractured 6" from neck. Appearance, uniform granular. TENACITY SPECIMENS. General marks, 12 M R29 T R2. No. of test. Additional marks. Diameter. Sectional ai-ea. Tensile strena;!!!. Specific gravity. Hardness. Totill. Per square incli. 4474 4475 4476 4477 4478 4179 BT3I BT4O BTbM BL„T BL,0 BLsM Inches. 1. 120 1. 129 1.129 1.129 1.129 1.129 Sq. inch. 1.00 1.00 1.00 1.00 l.UO 1.00 Pounds. 29, 810 32, 670 30, 650 32, 290 32, 070 32, 020 Pounds. 29,810 32, 670 30, 650 32, 290 32, 070 32,0:0 7.3319 ]5.75 7. 3452 7. 3127 7. 3436 16. 69 16.73 15.59 12-INCH B. L. RIFLED MORTAES. 341 No. 870. Leugth, 12". Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 10". Applied loads. Total. Per ecLuare inch. Compres- sion per inch. Successive compres- sion per inch. Permanent set. Successive permauc'ut set. Eemarks. Fmmii. 1,000 2,000 3,000 4,000 5,000 B,000 7,000 8,000 9,000 10, 000 11,000 12, 000 13,000 U, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, OOO 22,000 23, 000 24, 000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31,000 32, OQO ■33, 000 34,000 35, 000 36, 000 37,000 38, 000 39, 000 40, 000 53,060 Pov/nda. 1,000 ■ 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9.000 lO; 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21,000 23, 000 23, 000 24, 000 25, 000_ 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 ■ .33,000 34,000 35, 000 36, 000 37,000 38, 000 39, flUO 40, 000 53,060 iTich. 0. . 00004 . 00008 .00013 .00018 . 00023 . 00029 . 00034 . 00040 . 00045 . 00050 . 00056 . 00062 . 00068 . 00073 . 00078 . 00083 . 00030 . 00097 . 00102 .00110 .00117 . 00124 . OH130 . 00l39 . 00160 .00161 .00171 .OOiSl . 00201 . 00221 . 00238 . 00260 . 00292 . 00326 . 00360 . 00395 . 00433 . 00480 . 005b3 tlich. 0. . 00004 . 00004 . O0O05 . 00005 .00005 . 00006 . 00005 . 00006 . 00005 . 00005 . 00006 . 00006 . 00»06 . 00005 . 00005 . 00005- . 00007 . 00007 ■ .00005 . 00008 . 00007 . 00007 . 00006 . 00009 .00011 .00011 .00010 .00013 . 00017 . 00020 .00017 . 0C022 . 00032 . 00034 . 00034 . oou;i5 .ooo;i8 . 00047 . 00053 Inch. 0. Inch. 0. Tensile load. . 00002 . 00005 . OOOll . C0024 . 00013 . 00038 . 00034 Ultimate strength. Failed by triple flexure. 342 12-INCH B. L. EIFLED MORTAliS. No. 871. Marks, 12 ^i'S'^^" Length, 10". '° Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 5". Applied loads. Total. Per squfirt inch. Comprea- slon per inch. Successive coniprps- siuu per inch. Pennnuent set. Successive permanent set. Kemarks. Pounds. 1,000 2,000 3,000 4,000 5,000 6, UUO 7,000 8,000 '9, 000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17,000 18, 000 19, 000 20, 000 21,000 22, 000 23, 000 24, 000 25, 000 26, 000 27, 000 28, 000 29, 000 30, OUO 31,(100 3:;, 000 33, 000 34, 000 35, 000 36, uOO 37, 000 38, 000 39, 000 40, 000 62, 500 Pounds. 1,000 2, 000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13,000 14, 000 16, 000 16, 000 17, 000 18,000 V 19, OUO 20, 000 21,000 22, 000 33, 000 24, 000 26, 000 26, OOO 27, 000 28, 000 29,000 30, 000 31, 000 32, 000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 62, 500 Inch. 0. . 00004 . 00010 . 00016 . ooo:;o . oom-k . 00028 . 0O0J4 .00010 . 00044 . 000 50 . 00054 . 00060 . 000G4 . 00070 J0078 . 00082 . 00088 .C0094 . 00100 .00108 .00114 .00122 .00130 . 00138 . 00148 .00158 . 00108 .001H2 . 00200 . 00226 . 00240 . 00204 . 00294 . 00.-38 . 00372 . 00404 .00i48 . 00500 . 00554 Inch. 0. . 00004 . 00006 . 00006 . 00004 . 00004 .00004 . C0006 . 00006 . 00004 . 00006 . 00004 . 00006 .00004. . 00006 . 00008 . 00004 . 00006 . 00000 . 00006 . 00008 . 00006 . 00008 . 00008 . 00008 .00010 .00010 .00010 .00014 .00018 . OOOiO .00014 .00024 . 00030 . 00044 . 00034 . 00032 . 00044 . 00052 . 00064 Inch. 0. Inch. 0. Initial load. . 00004 Ultimate strength. Failed by triple flexure. 12-inch b. l. rifled mortars, Cast-Ibon Body, No. 30. 343 No. 4169. Marks, 12 MK,«,TE> Length of stem, 23". Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 20". Applied loads. Elonsation per inch. SnccesKive elongation per inch. Permanent set. Saoceasive permanent set. Bemarts. Total. Per BonaTe inch. Pounds. 1,000 2, 000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000 11, 000 12, 000 13, 000 14,000 16,000 16,000 17,000 18,000 19, 000 20, 000 21,000 22,000 23,000 23, 980 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21,500 22,000 23, 000 23,980 Inch. 0. . 000050 .000100 . 000150 .000200 .000250 . 000305 . 000355 . 000415 . 000480 .000540 . 000605 . 000675 . 000755 . 000835 . 000910 .001010 .001110 .001220 .001360 .001540 .001725 .001965 Inch. 0. . 000050 . 000050 . 000050 . 000050 .000050 . 000055 . 000050 .00006J . 000065 .000060 . 000005 .000070 . 000080 .000080 . 000075 .000100 .000100 .000110 . 000140 .000180 .000185 .000240 Inch. 0. Inch. 0. Initial load. Tensile strength. 6. . 000035 . 000035 . 000050 .000016 . 000090 . 000040 .000135 .000045 .000210 . 000075 .000310 . OOOIOO - .000340 . 000230 Fractured 10". 75 from neck. Appearance granular ; 50 per cent. of fractured surface contains dark colored spangles. TENACITY .SPECIMENS. General marks, 12 M R30 T Rj. No. of test. Additional marks. Diameter. Sectional area. Tensile strength. Specific gravity. Hardness. Total. Per square inch. 4484 4485 4486 4487 MTgl MT4O MTjM MTsO Inches. 1.129 1.129 1.129 1.129 iSq, inch. 1.00 1.00 1.00 1.00 Pounds. 29, 630 29, 470 80, 200 31, 940 Founds. 29, 630 29, 470 30, 260 31, 940 7.3156 7,3185 7. 3250 7. 3345 14.26 14.12 14.76 14.40 344 12-INCH B. L. RIFLED MOETARS. No. 873. Marts, 12 \^|P,'^«> Length, 12". ' Diameter, 1".129. Sectional area, 1 square iucb. Gauged length, 10". Applied loads- Compres- sion per Inch. Successive compres- sion per inch. Perm.anent ser. Succe'-sive permanent set. Kemarta. Total. Per square incb. Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 16, OCO 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23,000 24, 000 25, 000 26, 000 27, 000 28,000 29, 000 30, 000 31, 000 32, 000 33,000 34, 000 35,000 36, 000 37, 000 38, 000 39, 000 40, 000 60, 780 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24, 000 25, 000 26, 000 27, 000 28,000 29, 000 30, 000 31,000 32, 000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 50,780 Inch. 0. .00001 . 00009 .00014 .00019 . 00024 .00029 . 00034 . 00039 . 00045 . 00049 . 00056 . OOOliO . 00066 . 00071 . 00077 . 000K5 . 00090 . 00097 .001113 . 00110 .00119 .00126 .00136 .00145 .00158 .00106 .00178 . 00195 .00215 . 00240 . 00200 .00288 .00321 . 003.05 . 00300 . 014.00 . 005U3 . 005,02 .00621 Inch. 0. . 00004 . 00005 . 00005 . 00005 . 00005 . 00005 . 00005 .00005 . 00006 . 00004 . 00007 . 00004 . 00006 . 00005 . 00006 .000U8 . 00005 . 00007 . 00006 . 00007 . 00009 . 00007 .00010 . 00009 .00011 . 00010 . 00012 .00017 . 00020 . 00025 . 00U20 .00028 . 00033 . 00034 .000J4 . 00051 . 00053 . 00049 . 00069 Inch. 0. Inch. 0. Initial load. Ultimate strength. 0. 0. . OOCOo . OOoOO . 00(110 . 0U004 . 00028 - .00018 .01000 .OU'Jll .00)83 .00114 .00417 .00234 Failed by triple flexure. 12-INCH B, L. RIFLED MOKTARS. 345 No. 4167. Marts, 12 MEsjTE, Length of stfem, 23". Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 20". Applied loads. Elongation per inch. Successive elongation per inch^ Permanent set. Successive peiiiiauunt set. Eemarlta. Total. Per square Incn. Founds. 1,000 ■ 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 1'OO 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22,000 23,000 24,000 25, 000 29,270 Puimd». 1,000 2,000 3,000 4,000 6,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, OOO 18,000 19, 000 20, 000 21, 000 22, 000 23, OOO 24,000 25, 000 29, 270 Inch. 0. .000050 .000106 . 000155 . 0CO21O .000270 . 000330 . 000390 . 000450 .000510 . 000585 .000650 .000735 . 000800 . 000890 . 000975 . 001065 .001190 .001310 . 001455 .001030 .001835 . 002086 . 002350 . 002775 Inch. 0. . 000050 . 0UU055 . 000050 . OOOO.iS . 000060 . 000060 . 000060 .000060 .000060 .000075 . 000065 .OOOOfiS . 000065 . 0011090 . 000085 . 000090 .000125 . 000120 . 000145 . 000176 . 000305 . 000350 . 000365 . 000425 Inch. 0. Inch. 0. Initial load. Tensile strength. 0. . 000040 . 000010 .000060 . 000020 . 000090 . 000030 .000140 . 000050 . 000205 . 000065 . 000340 . 000135 . 000560 .000220 .000915 .001235 .000355 . 000320 Fractured S^" from neck. Appearance, uniform granular. 346 12-INCH B. L. RIFLED MOKTAES. No. 4168, Marks, 12 M^^^TE. Length of stem 15".75, Diameter, 1". 129. Sectional area, 1 square inch. Gauged length, 10". Applied louds. Elongation per inch. Successive elougation per inch. Perni.inont set. Successive permanent set. Bemarks. Total. Per sqnare inch. Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, Ouo 13, 000 14, 000 15, 000 16, 000 17, 000 18,000 19, 000 20, 000 21,000 22, 000 23, 000 24,000 25, 000 2', 710 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22,000 23, 000 24,000 25, 000 27, 710 Inch. 0. . 00006 .00011 . 00016 . 00021 .00028 .00035 ■ .00040 . 00045 . 00050 . 00056 .00004 .00070 . 00079 . 00088 . 0U098 .00108 .00120 . 00132 . 0O147 .00164 . 00182 .00208 .00240 .00280 Inch. 0. . 00006 .00005 . 00005 .00005 . 00007 . 00007 . 00005 . 00005 . 00005 . 00006 . 00008 . 00006 . 00009 . 00009 . 00010 . 00010 .00012 . 00012 .00015 .00017 . 00018 . 00026 .00032 . 00040 I7ich. 0. luck. 0. Initi.il load. Tensile strengtli. 0. . 00005 . 00005 . 00007 . 00002 .00009 . 00002 . 00014 . 00005 . 00022 . 000(18 . 00037 . ooois .00057 .00020 .00098 .00127 . 00041 . 00029 Fractured 2" from neck. Appearance, granular, with dark-colored spangles. TENACITY SPECIMENS. General marks, 13 M E30 T E2. Xo. of tost. Aililitional marks. Diameter. Sectional area. Tensile strength. Specific gravity. Hardness. Total. Per sqnare inch. 4488 4189 4490 4491 449J 4493 BT3I BTiO BTsM BL„I BL7O BLsM Inches. l.)29 1. 129 1. 129 1.129 1.120 1.129 Sq. inch. 1.00 1.00 1.00 1.00 1.00 1.00 Pounds. 29, 010 34, 310 30, 300 29, 820 32, 240 32, 980 Pounds. 29, 610 34, 310 30, 300 29, 820 32, 240 32, 980 7. 3350 15.13 7. 3297 7. 3277 7. 3212 14.90 1.5. 28 14.26 12-INCH B. L. EIFLED MORTARS. 347 No. 874. Marks, 12 MK»TE, Length, 12". " Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 10". Applied loadEi. Compres- sion per inch. Successive compres- sion per inch. Permauent set. Successive permauent set. Kemarlis. Total. Per sqnare • Inoh. Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 ■10,000 11, OOO 12,000 13, 000 14, 000 15, 000 16, 000 17,000 18, 000 19, 000 20, 000 21,000 22, 000 23, 000 24,000 25, 000 26, 000 27,000 28, 000 29,000 30, 000 31, 000 32, QOO 33, 000 34, 000 36,000 36, 000 37,000 38, 000 39,000- 40, 000 52, 700 Pounds. 1,000 8,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000 U, 000 12, 000 13, 000 14, 000 15,000 16, 000 17, 000 18, 000 19, 000 iO, 000 21, 000 22, 000 23, 000 24,000 26, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 33, 000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 52, 700 Tneh. 0. . 00003 .00009 , 00013 .00019 .00025 . 00030 . 00037 . 00042 .00047 . 00052 .00058 .00063 . 00069 .00076 . 00081 . 00088 .00094 .00101 .00108 .00115 .00122 .00129 . 00138 .00149 . 00158 .00168 . 00181 .00194 .00216 .00233 . 00251 .00274 . 00300 . 00345 . 00373 .00402 . 0.448 .00501 .00570 Inch. 0. .00003 . 00006 .00004 . 00006 . 00006 . onou5 .00007 . 00005 .00005 . 00005 . 00006 . 00005 . 00006 .00007 . 00005 .00007 . 00006 . 00007 . 00007 .00007 .00007 . 00007 . 00009 . OOOU . 00009 . OOOIO .OOOlj . 00013 . 00022 .00017 . 00018 . 00023 . 00026 .00045 . 00028 .00029 .00046 .00053 .00069 Inch. 0. Inch. 0. Tnilialload. Ultimate strength. . 00001 . 00001 . O0OO2 . 00001 . 66067 .00005 .00012 .00005 . 66628 .00016 . 00065 . 00037 .00168 .00103 . 00302 . 00104 Failed by triple flexure. 348 12-INCH B. L. EIPLED MORTAES. Fo. 875. Marks, 12 M^i^TE, Length, 10". '° Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 5". Appliedloads. Total ^"^ square Compress- ion per inch. Saccessive conipi'ess- ion per lECh. Permanent set. Successive permanent set. Semarks. Pounds. 1, too 2,000 B, OllO 4,000 5,000 6,000 7, UOO 8,000 9,000 10, 000 11,000 12, LOO 13, 000 14, OuO 15, 000 10, 000 17, 000 in. 000 I'j; 000 2C, 000 21, OUO 22, 000 23, 000 24, 000 25, 000 26, OuO 27, 000 28, 000 29, COO 30, 000 31, 000 32, OOO 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 30, 000 40, 000 61, 050 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11,000 12, OUO 13, 000 14, OuO 1.1, 1'OO 10, 000 17, 000 15, 000 19,000 20, 000 21, 000 22, 000 23, 000 24, 000 25, 000 26, OuO 27, 000 28, 000 29, 000 30, 000 ■ 31, 000 32, 000 33, 000 34, 000 35, 000 36, 000 37, 000 38, OOO 39, 000 40, 000 61,050 Inch. 0. . 00004 .00010 .00014 .00018 . 00024 .00030 . 00034 . 00038 .00044 . 00050 . 00056 . 00O60 . 00066 . 00072 . 00078 . 00082 . oooeo . 00006 . 00102 .00110 .00116 .00126 . 00132 .00140 . 00150 .00160 . 00172 .00186 . 0O2O2 . 00230 .00248 . 00270 . 00302 . 00330 . 00380 . 00414 . 004.'">8 . 00604 . 00552 Inch. 0. \ 00004 . 000. a . 00004 . 00004 . 00006 . 00006 . 0OO04 . 00004 . 00006 . 00006 . 00006 . 00004 . 00006 . 000('6 . 00000 . 00004 . 00008 . 00006 . 00006 .00008 . 00006 .00010 .000 6 . 00008 .00010 .011010 .00012 .00014 .00016 . 00028 .00018 . 00022 . 00032 . 00028 . 00050 . 00034 . O0044 . 00046 . 00048 Inch. 0. Inch, 0. . 01,002 . 00010 . 00002 . OOOii . 00014 .00034 . 00162 .00350 . 00102 Initial load. . 00188 Ultimate strength. Failed by triple flexure. 12-lnch b. l. rifled moetaes. Oast-Ieon Body, No, 31. 349 No. 4293. Marks, P^^i^^^' Length of stem, 23". Diameter, ]".129. (Sectional area, 1 square inch. Gauged length, 20". Applied loada. EloBp^ation per inch. Sncce8.sivi dongiitioii pur inch Perraanenl set. Successive permanent set. Bemarks. Total. Per square inch. Pounds, 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 1.3, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19,000 20, 000 21, 000 22, 000 23, 000 24, 000 25, 000 28, 990 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15,000 16. 000 .17, 000 . 18, 000 19,000 20, 000 21, 000 22, 000 23, 000 24, 000 25, 000 28, 990 Inoh. 0. .000055 . 000105 .000160 . 000210 . 000260 . 000320 .000370 . 000430 . 000480 . 000545 . 000615 .0;0675 . 000745 . 000815 . 000900 .000985 . 001085 .001190 . 001300 . 001450 .001610 . 001825 .002055 .002410 Inch. 0. . 000055 . 000050 . 000055 . 000050 . 000050 . 000060 .000050 . 000060 .000050 . 000065 .000070 . 000080 . OC0070 .000070 . 000085 .000085 . OOOIOO .000105 .000110 . 000150 ■ .OOOIUO .000215 . 00U2;iO . 000355 Inch. 0. Inch. 0. Initial load. Tensile strength. .000010 . 000010 . 000035 . 000025 .000050 .000015 . 000080 .000030 .000125 . 000045 .0001|0. .000055 .000280 . OOOIOO .000450 .000170 . 000705 .001020 . 000315 . 00UJ55 Fractured 1" from neck. Appearance, granular, dark mottled. TENACITY SPEOIMENS. General marks, 12 M K31 T Ej, No. of test. Additional marks. Diameter. Sectional area. Tensile strength. Specific gravit.y. Hardness. Total. Per square inch. 4494 4495 4496 4497 MTjI- MT4O M Tj M MTsO Inches. 1.129 L129 1.129 1.129 Sq. inches. 1.00 1.00 1.00 1.00 Founds. 31,070 30, 250 29, 870 33,450 Pounds. 31, 070 30, 250 29, 870 33, 450 7. 3366 7. 3281 7. 3326 7.3368 U. 83 14.69 16.28 14.12 350 12-INCH B. .L. RIFLED MOETAES. No. 876. Marks, i2M«?|,te, Leugth, 12". ' Diameter, 1".129. Sectional area, 1 square inch. Gauged lengthy 10". Applied loads. Compres- sion per inch. Saccessive compres- sion per inch. Permanent set. Successive perruaueiit set. Houiarlcs. Total. Per square incn. Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15,000 16. 000 17,000 18, 000 19, 000 20, 000 21, 000 22, OOO ?3, 000 24, 000 23, 000 26, 000 27, 000 28, 000 29,000 30.000 31, 000 32, 000 33, 000 34, 000 35, 000 36,000 37, 000 38, 000 39, 000 40, 000 51, 720 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000 11,000 12,000 13, 000 14, 000 15, 000 16, 000 17, OUO 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24, 000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31,000 32, 000 33, 000 34, 000 3.3, 000 36, 000 37, 000 88, 000 39, 000 40, 000 51,720 Inch. 0. . O0OO4 . 00009 .00013 . 00018 . 00022 .00027 .00032 . 00038 . 00042 . 00048 .00053 . 00058 . 00003 . 00068 . 00073 .00080 . 00U88 .00094 . 00009 .00103 .00122 .00119 .00127 . 00138 .00148 . 00138 . 00169 .00182 . 00199 . 00218 .00243 . oo:60 .00300 . 00340 . 00380 .00413 . 00453 . 00500 . 00582 Inch. 0. .00004 .00005 . 00004 .00005 . 00004 . 00005 . 00005 . 00006 . 00004 . O0OO6 . 00005 .00005 . 00005 . 00005 . 0000 J .'00007 .00008 . 00006 . (10003 .0l»06 .00007 . 00U07 . 00008 .00011 .00010 .OOO'O . 00011 .00013 .00017 .00019 . 000?4 , .00018 . 00040 . 00040 . 00040 . 00033 . 00040 .00047 .'00082 Inch. 0. Inch. 0. Initial load. Ultimate strength. 0. . OOoOl . 00001 .00004 . 00003 . 00010 . 00006 . 00021 .COOll . 00058 . 00037 . 00170 . 00112 .00378 . 00208 Failed by triple flexure. 12 -INCH B. L. RIFLED MORTARS. No. 4294. 351 Marks,i2MK,«_TE, Length of stem, 23". Diameter, I'M 29. Sectional area,, 1 square inch. Gauged length, 20". Applied load^. Elongation per inch. Snocesaive elongation per inch. Permnncni sot. SuccesHivc permaneDt set.' Kemarks. Total. Per Bqnaro inch. Poundt. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, OQO 14, 000 15, 000 16,000 17, 000 18, 000 19, 000 20, 000 21,000 22, 000 23, 000 24, 000 25, 000 32, 070 Pounds. 1,000 2,000 3, 000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11,000 12, 000 13, 000 14, 000 15, 000 36, 000 17, 000 18, 000 . 19, 000 20,000 21, 000 22, 000 23, 000 24,000 25, 000 32, 070 Inch. 0. .000055 .000105 .000155 .000210 .000270 . 000330 . 000385 .000(40 .000495 .000555 . 000610 .000680 . 000750 .000810 . 000890 . 000965 .001055 .001155 .001255 . 001375 . 001495 .001655 .001865 . 002095 Inch. 0. . 000055 . 000050 ■ . 000050 .000056 . 000060 .000060 .000055 .000055 .000055 .000060 , 000055 .000070 .000070 .000060 . 000080 . 000075 . 000090 . 000100 .000100 . 000120 . 000120 .000160 .000210 .000230 Inch. 0. Inch. 0. Initial load. Tensile strength. . 0j0015 .000015 .000010 s . 000025 . OOOOGO . 066020 . 000090 . 000030 . 000115 . 000025 .000165 . 000050 ..0U0250 . 000085 .000305 .000115 . 000380 . 000740 . 000215 . 000160 Fractured 1".5 from neck. Appearance, uniform granular. 352 12-INCH B. L. EIPLED MOETAES. No. 4295. Length of stem, 15".75. Diameter, I'M 29. Sectional area, 1 square inch. Gauged length, 10". Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. Successive permanent set. Remarks. Total. Per square inch. Pdundt. 1,000 2,000 3,000 4,000 6,000 6,000 7,000 8,000 9, 000 10,000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17,000 18, 000 19, 000 20, 000 21,000 22, 000 23, 000 24, 000 25, 000 32, 210 Founds. 1,000 2,000 3,000 4,000 6,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21,000 22, 000 23, 000 24, 000 25,000 32, 210 Inch. 0. .00006 .00011 . 00016 .00021 . 00026 . 00031 . 00037 . 00042 . 00047 . 00052 . 00058 . 00065 . 00071 . 00078 . 00085 .00092 . 00100 .OHIO .00122 .00133 . 00148 .00162 . 00180 .00210 Inch. 0. .00006 . 00003 . 00005 . 00005 .00005 . .00005 . 00006 . 00005 . 00005 .00005 . 00006 .00007 .00006 . 00007 . 00007 . 00007 . 00008 .00010 . 00012 .00011 .00015 .00014 .00018 . 00030 Inch. 0. Inch. 0. Initial load. Tensile strength. 0. . 00002 .00002 . 00005 . 00003 . 00007 . 00002 .00010 .00003 . 00014 .00004 • .00022 .00008 . 00036 . 00014 . 00057 . 00076 . 00021 .00019 Fractured ".75 from neck. Appearance, uniform granular. TENACITY SPECIMENS. General marks, 12 M E31 T B^. No. of test. Additional marlis. Diameter. Sectional area. Tensile strength. Specific gravity. Hardness. Total. Per sqiiitro inch. 4498 4499 45C0 4501 4502 4503 BT3I BT4O B Ts M BLfil BL, BlgM Inches. 1.129 1.129 1.129 1.120 1.129 1.129 Sq. inch. 1.00 1.00 , 1.00 1.00 1.00 1.00 Founds. 32, 530 34, 990 85, 620 35, 840 34, 270 37, 310 Founds. 32, 530 34, 990 35, 620 35, 840 34, 270 37, aio 7. 3352 14.47 7.3486 7. 3390 7.3475 14.90 " 15. 20 16.31 12 INCH B. L. RIFLED MOETAES. No. 880. 353 Marks, ^2 W^ Length, 12". ' Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 10". Applied loads. Total. Per eqnare incli. Comproa- sion per inch. Successive compres- sion per iucli. Permanent set. Successive permanent set. Remarks. Pounds. 1,000 2,000 3, 000 4,000 5,000 6,000 ,7, 000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14,000 15, 000 IB, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, (100 23, 000 24, 000 25, COO 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 82, 000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 63, 900 Founds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, OOO 14, 000 16, 000 16, 000 17, 000 18, OOJ 19, 000 20, 000 21,000 2a, 000 23, 000 24,000 25, 000 26; 000 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33, OOO 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 62, 900 Inch. 0. . 00005 . 00010 . 00015 .00020 . 00024 . 00029 . 00034 . 00039 . 00044 . 00050 . 00056 . 00061 . 00067 . 00071 . 00078 . 00086 .00091 . 00096 .00102 .00109 . 00116 .00122 . 00129 . 00138 . 00147 .00159 . 00170 . 00181 .00195 . 00212 . 00233 . 00256 . 00278 . 00302 . 00348 . 00378 . 00410 . 00455 . 00505 Inch, 0. . 00005 . 00005 . 00005 . 00005 . 00004 .00005 .00005 . 00005 . 00005 . 00006 . 00006 . 00005 . 00006 . 00004 .00007 . 00008 . 00005 . 00005 . 00000 . 00007 . 00007 .00006 . 00007 . 00007 .00011 .00012 .00011 .00011 .00014 .00017 . 00021 . 00023 . 00022 . O0024 .00046 . 00030 . 00032 . 00045 . 00050 Inch. 0. Inch. 0. Initial load. . 00001 . 00001 . 00032 . 00172 Ultimate strength. Failed by triple flexure. H. Ex. 165 23 354 12-lNCH B. h. RIFLED MOETAES. No. 881. Marks, 12 ME,^TE, Length, 10". '° Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 5". Applied loads. Total. ^«LX™ Gompres. siou per incb. Succesaive compres- siOD per inch. Permanent set. Snccessive permanent set. '■ Komarks. Founds, 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, COO 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24, 000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 34, 000 35, (100 B6, 000 37,000 38, 000 39, 000 40, 000 62, 270 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15,000 IB. 000 17,000 18, 000 10,000 20, 000 •21,000 22, 000 23, 000 24, 000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000- 32, 000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 62, 270 Inch. 0. . 00004 . 00010 . 00014 . 00020 . 00024 . 00028 . 00034 . 00038 .00042 . 00046 . 00052 . 00058 . 00062 . 00068 . 00072 . 00078 .00084 . 00090 . 00098 . 00104 .00110 . 00116 . 00124 . 00132 . 00142 . 00152 . 00162 . 00174 . 00192 . 00210 . 00230 . 00250 . 00284 . 00320 . 00356 . 00384 . 00434 . 00480 . 00542 Inch. 0. . 00004 . 00006 . 00004 . 00006 . 00004 . 00004 . 00006 .00004 .00004 .00004 .00006 . 00006 .00004 . 00006 . 00004 . 00006 . 00006 .00006 . 00008 . 00006 . 00006 . 00006 . 00008 . 00008 . 00010 . 00010 . 00010 . 00012 . 00018 .00018 . 00020 . 00020 . ooo:u . 00036 . 00036 . 00028 . 00050 . 00052 . 00056 Inch. 0. Inch. 0. Initial load. . 00006 . 00102 . 00344 . 00192 Ultimate strength. Failed by triple flexure. 12-INCH B, L. RIFLED MOETAES. 355 I a "oooooooooo o o •gPQfiPRnpBpnnn wo 00 >no ffl t> OS 00 » 00 00 I^ CO i> o o O =5 s i o OS -^ o craoo D- lo m o 174 (NC4 o io o CO m n i-i t- 1- 1- 1- tr- t- t- ooeoooooooooooo ooooodcFodooddp]3oa-3ofl Ti Ti Ti 13 T^ Ti Tj Ti 13 T^ Tl Tj 13 ^- ;t> T3 ^ -^ 'C B* a icoei3McoMeoo3cocococo«coD5cocoMwi?Jcjec(7icoc'seoe'i(?jeQM'rjc^iM • in in Qu c— , gW iM OOCQ lO T* c- (O oWog r- L— t- t>- »n a ® 1.3 ©-o^ (D-arS as-c^ -S 2 soooooooogooooS.oooobooSoS® ^ -^ : ; ;a ;h ;a :w :a i-tWrHWCO-^lOCO-^irStOC-COrHNCO-fillOOTTjtiaWt-OOiHMiHNr-IWrHClrHCgTHlMr 5S ■HrHiMi-iT-iiHiHNWwciwiMiMcaMMeacjiMeomcoeoTttTii'eH'^inmioioco 9 caw p OS -» fiO^M--*in« t-CO<3^ sseoocncSooaoeooeocca 3 V w s © S -, SOO AC cocoEo 356 12-INCH B. L. RIFLED MORTAES. a P. R R wo in ift L': CD lA ^ tn •«*!^ OS coco lyi CI to fa ui o/X) CO OS. 00 O lO oo'w CO t> t- 00 O t- OS N C^ iM C^ CM C^ C t-' 1> t-^ t> L^ t-^ 7^ * _^ - ■ «a tj P M P ■ t- P a O0 .li;-' P^ ! u ■ i 3 a 3oocaOt2®oo ^ H 'PI .fi) * ■== C ~ Is 0aWO0)-^^^O00TfC3tH->*Cilr-(0WQ0.-t ooeoiMocct-oiioooosm'-ioi^t-MrHeaoMoomO'-ic-W'^iMmco -rti-os o o o CO CO CO CO CO C4CHCM{NCa CO CO coco t> •= p g ft h1 o "S '.s 'S ■^ "^ IS'S'C'C OB O "S ■*-' '^ "Im +^ ^ 5 a ,2 .a^ SI ® N a g B gj N ® N bSm3 M>3 c ^ © ; : i ; ; . i ^ . ® 'B'C'BiS'B'C'^ r-^ g'B'O'CC'C-C'CS £'^'^'^13 £3 - - :m ;3 {M W iH COOiOr-IMeO -«<-vmiAOi-lrHrHt-t^t>r-ODCOOOClO ciDooooooa>ooso9a)ooo iri t-^ f tMO ^ Tj» lO ■■* 09 00 O Q4C4 CO • Aoaco f o> :o ^ CO CO CQ CO t- CO o> CS [— OS coco !0 CO CO CO CO CO CO CO t> i> r^ i> t^ i> c-^ ■ OOO C4 • CO mo ■■^CO M o :p 61.S Ss ig , S £ o 2 E ■^ c= c3 loo 00000000000000000000000000000000000000000000=>0000'500 0>-rrH0)OC^10»i-l00i3^HC0.-H-:v|JJC»C3Ni-lO-^C»J'--lOC0C-'HO00t-C--(O5Di-^^ 770 -J-HOS i-ICDmL-if;C^**t-0>in» ■fl^.rH 0'*rH-*t-t*(i-iCOr-il>iMioa>COOO(OrHM'^iJmO»nOt-«0-*WcOCOOsm5VllO(MOMO 5 Q r^ r;3 r^ n ■ ■ ■ O'^'^'w'^'^ Hoao c=3 = hOSO •St; i'gga ^530 ■ • -^ ^ -£3 eO'«iJllftQOfHMCO-*OeDt-OOrH(MCO-*mciOiHMCO-OOr-(MCOT(mS CO-rt (MCO"*lOCOt-COr-(MCO'^trtOOTH(MeO"*lO<0 '5COCOCOCOeoeOCOCOCOCOCO'*'*'^JlTj('#'^"*-^TH^r«TfTi4MICD(0«0'.OCO«D<0050»(00(0«Dt t-ot-t-t-t-t-t-c^t-t- ■i ^^ ~M T-i ■-> CD r- 358 12-lNCH B. L. RIFLED MORTARS. i tqd 00 COM o> W -a" o lA iri lO U3 t>0(DlOH< CJ o cs CO Qi 71 MCOCO C- tr-C- c-t>r> M =^ 71 r CO coco t-i N -^ in CO OS -X. N '-i CD ^ea M cs —I coco coco so I- 1> i> i> l> IS: OP fed® e^-^ fd r^>'cocc>'JJccco>''_'_mml>'_'coco>_____co>_' ^ ?^cMc.j c^o®r^w o®®o°^0OiH(NeOT»tinQ0r 0"*inot-oo(M«Tj(io«)«.Heo'*«ftot- as eOCOOOTr-^-»J(rJ*00-Tf^'*'*-^00-Tf<^-^-*J<'«< 12-INCH B. L. RIFLED MOHTAES. B5i) 16.36 '"'is.'gi'" 15.43 16.48 15.99 14.33 "'is.' 85" 14.69 14.40 i^issgs : i : isgg :SSg§3 i i ;g ' t* CO i> in irf ■ ■ '• • iri -di -^ I CO CO t^ «d I '• 'f^ ocoin o»t-o 19.08 17.62 18.28 10. 9D t« • .lAcqxooco 1 i I 'cD^co .iftCOCOOiCa • ■ ■ -OOr-ia .t-MOO-H I I ■■'^ ;c«coco.-oco ; ■ ; ;mcOM 'commS ■ • -cyb ; i> t^ l> l> t> ; • ; ; I> t> i> ■ l> t^ t-* i> ■ ' 1 1-^ -Jt-CO WMCO 7. 3230 7. 3184 7.3321 7. 3203 Uniform granular do 1 ; ; ; o • ! 1 a : i : S' i i : Im j ii i 1 i i M M £ o : I j 1 : '5 -; ; ! ■ . . P ; ; ; ; 1 ; o a .2 ; : IN 1 o o C3 i ■ 'a '• a ■ t ' be : a i 1] O0OSO3O=i3OO0OO0OO00OOO0C)0OOO00OO00O00CO0 = OO0©0O0OC> -1'r;-in^?>lO3MC0l-C'i-^t>O3!t-C«J-1(MC00J«300)'*aS03>-IO00t-.H-*0lTf-^r~=JC0^i0M'^C000tOr-lt-C»a03 030iCCfflOL—OD»T-10Jifttt-^ClinoiOOiHlOOOiflOSCOCDCOt-m'OrJI'*MCOCOi-iL~C;C-mOOOOC3lOC;31NWOOS 55Si 5 o o og'^ o o o o o o oS5 o = o o"S5 S = ° o o ogS § o o o??'" fe o o o p q qS-g q o q?3; fH - ' * .'3-S2-S soSo i-sS-a-3 mOShoS Soao ■ 4) ' v • II'^'C^'^TS o ^ "^ ^ - ^2:32 s« 3 '^ 3 s « ; S-t^3 2 d-'- 1111^ sogooooooooNoooo^oooooc ;a I' :n : ;S ) o J> o e : :w : -;r— rgr— -— M- ;a ; ooc>(^]cQ■^lncoc4l-Hco■«illowt•ooolMcOTltlneOlH9lm■4lAcot>coc^cn-4u^co(^l•-Hco'4coo}o]eo<^u^»1--l•--< «] CM 74 C4 01 CQ N 9 ^coc^As-rfiiAcet-aC'^aO'' >*'*':*'"= 5^^^ I* ^ '^ ^ "^ ^ 360 12-INCH B. L. KIFLED MOETAES. a flfl t^l M L- es to 'o «mro DJ M r5 T^J i> t> t* i>t-t-r> M I'; o o era o ^1 T* ■qJ -c iri Tii c. a z> a i^-i T\ ^ w-l l> l> D-^ l> £o £■•3 a K Co D i " H Hist-- Pi |ciO'^03ooTt-iftt-mTHcoco cocDU OS o T- o — 1 f M CO Oi-^ in !D t> »-l tH O) N CICM Ol m in M lo w la 1!^ O ^ 00 O O 7-1 12 -INCH B. L. EIFLED MORTARS. 361 15.05 14.83 15.05 '"u.hl" 14. 69 15.51 14.69 14.98 14.47 '"15.59" 14.98 15.51 14.98 15.75 '"ih'.m" 16.73 15.59 '"ii.26 ■ 14.12 14,76 14.40 '"ih'.is ""ii."9o" 15.28 14.26 '"ii.'ss" 14.69 15.28 14.12 7.2988 ""7.'364l" 7. 3045 7.3062 ""7.'3b76" 7.3133 7. 3160 7.3135 ""7.'3i32" 7. 3168 7.3157 ""7.'3389' 7. 3327 7. 3349 7. 3350 7.3319 ""7.' 3452' 7. 3427 7, 3436 ""'j.'sise" 7. 3185 7.3250 7. 3245 ""'7.3356' '"'7.' 3297 7.3277 7. 3213 ■■"7." 3366" 7. 3281 7. 3326 7.3368 Uniform granular --.-do Granular, mottled ....do Granular, with dark colored spangles Granular, \yltli dark spangles Granular, dark mottled..^ Uniform granular )OOOOOOOOG?000000000000000000000000000000000'00000 .- ,-. —, __^_.^.. . ^ . — *, __u ._ __^ . — _^. ^r-(i-'O'M'*Q00)l-mt— lOt- -CDMeQOOTimOJOlMOO'^O SS§§gg§8SS§i ogggggoooooooogoo ^ ph' ^ ^- ,-; ^ rH- r^ ^ r^ r4 r^ rH rH r^ r^ r- 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 c c 1: c C c i r c C ^1 c c c c c c c ^.4 1 c c S3 4) 5 '§ c CO "0 a: "fl c5 1 re ii 'J ■r 1 C 1 "5 a: ■J C 1 'I '5 t: a c C ■5 1 1 s s z a. c H c <3 I 'a c a: "0 C £ ^ '5 C ; a J a)C 5ifju5irsi-i ■^tn»t>Doaooo3o<-ic4coo9c ■ - .-( m as r-f^NM w 01 irs a J>Tj(Tt'^-!j'TPl-l2J'**''«''^'~''~"*'*^^'*"3!^3^'2j'^Ca 362 12-mCH B. L. RIFLED MOETAES. a o o 4 o o Eh 2 I i o o fq a sa - be® o ft coo n re o l- c^^ CO eo ' ^oooooso UpHOOOOOO code's ® (Op::; « -t; .i pq : : : : ; ; 1 i is rH ro -^ us (O t- 00 |l « CO TO ?t CO c; CO U3 CO 0> O 1-1 ^J C^ O) c: Oi o o o ^ Qi ^T ■^ m ur: >n to 12-INCH B. h. KIFLED MORTARS. 363 i Condemned body. Do. Do. Do. ■2 " Us £ 1 ■s I 1 e ■4 c c c d c c c c c c c X i c c P d d d d c c c c C c d d d o d d d d d d C'd'O'D §4i Ultimate streugtli per square inch. ^00000000000000000000000300000000000000000 |32sgsas2s§sss§a?,gsssgsss£ssi3siiiiiisiiii ■3 ^ ■^SOOOOOOOaOOOOOOOOOOOOOOOOOOOOCOOOOOOOCTOOO gOOOOOOOOOOOOOOOOOOOOOOOOGSOOOOOOOOOOOOOOOO ■33 1 « ' 5 „ ^ s UMONOWdWOWOMOWOMNWONOWNMOWWNOeaNOWNOOJCTONWOM 2 II 1 1 :^ '•z 1 •3 '-i '■ III & "3 i :3 i c 'x -^ O 1 o _o ^ o o o o o o o o o o 13 o 4 ^ O O O £ 'd'cxj 2" I : '■'^ rS :i o r5 o ?5p i '-S 5 :S 2-d :®j ^(3 ::g= 3 ;a 1 B a '3 a 11 ooaooeaeAoooAooaAOonoeaooosjoooooaoaoooeooaoaoo Ii »-HHr-(i-*MWCO««*TjtU5lO(e«C-OOOSO)00.-«rHrH^C!lniMMM(rom'*-#"*«>eD!3D-I>t-00 3« 5g o ^ o S^ f CO s 00 CO QO OD QO fe i g oQooooooa si i 00 o §8 boa a-* CO 3CT3 CO 3 00 00 t-OO-5 'SSooc 3«00 364 12-INCH B. L. EIFLED MOEXAES. t a Wa CO CO a oooooooooooooooocooooooooooooooooooooo 'C'C'w'^'O'O'OtS'O'O'^ i ts "O 'O 'd "fl 'C 'Oi3'3'^':3'0~'0'^'C!3'an: 300 ^oooo ooooooooooooooooooooooooooooooo ] "Sj5 ^-*^lCCQOa3tO?>IOO>-^lfC ■iTHoos^o-Ttoint-r— ooascM I = CJC>10MWO«(MOM(NONC]OC^'MCJiMClWOC^WOHM(MCOC3(MOMi?l 0(Mr<]OWMO 3** OOOOOODOOCOOOCOOOaOODOOOOCOODOOOOWCOCOODOOOOCSOOCOOO M TO'* coco 00 CO 00 CO 0000 0000000000000 12-INCH B. L. RIFLED MORTARS. STEEL HOOPS AND GAS CHECKS. b65 12-INCn B. L. RIFLED MOETAES. 12-INCH B. L. MORTAR, NO. 1. Tkunnion Hoop. No. 3917. 367 Marks, 12 ME,^TH Diameter, ",564. Sectional area, .25 square inch. Gauged length, 4". Applied loads. Elongation per inch. Successive elongation per Incli, Permanent set. Successive permanent set. Eemarlis. Total. Per square inch. Fonndt, 250 1,250 2,600 5,000 7,500 10, 000 11, 260 12,000 12,250 12, 500 12, 760 13, 000 13,250 13, SOO 13, 750 14, 260 14, 750 15, '60 15, 750 16, 250 25,360 Poimds. 1,000 5,000 10, 000 20, 000 30, 000 40, 000 45, 000 48, 000 49, 000 50, 000 51,000 52, 000 53, 000 54,000 65, 000 57, OOO 59,-000 61,000 63, 000 65, 000 101, 440 Inah. 0. . 000175 .000450 . 000800 .001175 . 001500 .001675 .001760 .001800 .001875 . 001925 . 001975 .002075 . 002250 .002400 . 002800 . 004000 . 005600 . 006750 . 007750 Inch. 0. .000175 . 000275 . . OOO.'iSO . 000375 .000325 .000175 .000075 . 000050 . 000075 . 000050 . 000050 . OOOIOO . 000175 . 0001.50 .000100 . 001200 . 001500 .001250 . 001000 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. " . 000 'BO .000075 . OOllO.'iO . 000023 General summary. Tensile strength per aqnare inch, of original .sortioii pounds.. 101,440 Elastic limit per square inch of originEu section do . . . 62, 000 Elongation per inch after rupture inoh.. . 1700 Elongation per inch under strain at elastic limit do... .001975 KeductioD in diameter at point of rupture ....do... .114 KeductioD in area after rupture, per centum of original section 36.4 Position of rupture 2". from neck Character of broken surface ..granular, silky center Elongation of inch sections -^-".10, ".31*, ",15^ ",12 3G8 12-INCH B. L. RIFLED MOKTAES. 13-INCH B. L. MOKTAR, NO. 2. Trunnion Hoop. No. 3814. Marks, '2 ^1%"^^ Diameter, ".564. Sectioual area, .25 square inch. Gauged length, 4". Applied loads. Elongation per inch. Succeasive elongation per inch. Permanent set. Snccessive permanent set. Kcmarks. Total. Per square JDCh. Pounds. ' 250 1, 250 2,500 5,000 7,600 10,000 11,250 12, 000 12, 260 12, 600 ,12,750 13, 000 33,260 13, 600 13, 750 14, 000 14, .500 15, 000 16, 500 16, 000 )6, .-,00 25, 300 Pounds. 1,000 5,000 10, 000 20, 000 30, 000 40, 000 45, 000 48,000 49, 000 50, 000 51,000 52, 000 53, 000 54, 000 55, 000 56, 000 58, 000 • 60, Olio 62, 000 64, 000 60, 000 101, 440 Inch. 0. . 000176 .000300 .000550 . 000925 . 001300 . 001460 . 001650 . 001575 . 001650 . 001700 . 001760 . 001800 .001950 . 002175 . 002500 .003550 . 005000 - .006750 . 008250 . 000875 In^h. 0. .000176 . 000125 . 000260 . 000375 . 000375 .000150 . 000100 . 000025 . 0OC075 . 000050 . 000050 . 000050 . 000150 . 000225 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. 0. 0. . 000325 . 001050 .0014,50 .001750 .001500 .001625 Gene)al summary. Tensile strength per square inch of original section pounds.. 101,440 Elastic limit iier square inch of origiual section do... 53[oOO Elongation per inch after ruptuie inch... 0.1625 Elongation per inch under strain at elastic limit do ,. . 001800 Keduction in diameter at point of rupture do..! .114 lleduction in area after rupture, per centum of original section 36.4 Poaition of rupture 1" from neck Characterofhroken surface silky center, granular at circumference Elongation of inch sections ".09, ".li ".17 ".28* 12-inch b. l. rifled mdrtaks. Hoop A^. 369 No. 3928. Marks, ^^^^^' Diameter, "*.564. Sectional area, ,25 square inch. Ganged length, 4". Applied loads. Elongation per inch. Snccesaive elongation per incli. Permanent set. Successive permanent set. Eemarks. To'tal. Per square inch. Pounds. 250 1,250 2,500 5,000 7,600 -10, 000 11, 250 12, 500 12,750 13, 000 13, 250 13,600 14,000 14, 500 15, 000 16, 400 15, 800 26, 310 Pounds. 1,000 6,000 10, 000 20, UOO 30, 000 40, 000 45, 000 50, 000 51,000 62, 000 53, 000 54, 000 S6, OOO 58, 000 60, 000 62, 000 64,000 105, 240 Inch. 0.- .000125 .000300 . 000630 . 001025 . 001375 . 001650 .001775 .001825 . 002100 . 002260 . 002400 .002675 . 003175 . 004125 . 006760 .007000 Inch. 0. .000125 . 000175 . 000350 .000375 . 000360 . 000175 . 000225 .000050 . 000275 .000160 . 000160 .000175 . 000600 .000960 . 001625 .001250 Inch. 0. 0. Inch 0. Initialload. Elastic limit. Tensile strength. .606025 , 000050 . 000025 . 000025 General avmmary. Tensile strength per square inch of original section pounds.. 105,240 Elastic limit per square inch of original section ...do... 51,000 Elongation per inch after rupture inch.. 0.1276 Elongation per inch under strain at elastic limit : do... .001825 Iteductionin diameter at point of rupture 064 Reduction in area after rapture, per centum of original section 21. 4 Position of rupture - 2".25 from neck Gliaraoterof brolcen surface I granular; dull spot at circumference Elongation of inch sections ...".18, ".16*, ".16*, ".11 H. Ex. 165—24 370 12-INCH B. L. RIFLED MOETAKS. No. 3929. Marks, 12 M^ A, Diameter, ".564. Sectional area, .25 square inch. Gauged length, 4"- Applied loads. EloD^atiou per iDCh. Successive elongation per inch. Permanent set. Suooesiive permanent set. Bemarks. Total. Per square inch. Pounds. 250 1,25C 2,500 5,000 7, 50C 10, 000 U, 250 12, 500 12, 750 13, OCO 13, 250 13, 750 14, 250 14, 750 15, 250 15, 750 25, 640 Pounds. < 1, coc 5,C0C 10, COO 20, COO 30, COC 40, COO 45, 000 50, COC 61, COO 62, COC 53, COO 55, COO 57, COO 59, 000 61, 000 63,000 102, 560 Inch. 0. .00C125 . 000350 .000725 . 001200 .001475 . OC1700 . 001975 . 00205C . 0U2175 . 002300 .002625 . 0033CO .004376 . 005900 . 007500 Inch. 0. .000125 . 000225 .000375 . 00M75 .000275 . 000225 . C00275 . 00C075 .0CC125 . 000125 . C00325 . 000676 . 001076 . 0C1525 .001600 ■ Inch. 0. 0. Inch. 0. Initial load. Elastic limit (approxi- mate). Tensile strength. . 066125 .000250 .000125 . 000125 General summary. Tensile strength per square inch of original section pounds.. 102, 560 Elastic limit per square inch of original section do... 50,000 Blongation per inch after rupture inch. . 0. 1475 Elongation per inch under strain at elastic limit do... .001975 Keductionin diameter a.! point of rupture do... .084 Beductioniu area after rupture, per centum of original section : 27.6 Position of rupturei- 1". 75 from neck Character of broken surface granular, 80 per cent.; dull silky, 20 per cent. Eltingationof inch sections ".11, ",24*, ".13, ".11 12-INCH B. L. RIFLE MOHTARS. 371 No. 3930. Diameter, ".564. Sectional area, .25 square iucli. Gauged length, 4". Applied loads. Blongation per inch. SnceesBive elongation per incli. Permanent set. Suooesflive permanent set. Remarks. Total. Per square inoli. Pmndi. 250 i 1,250 : 2,600 5,00u 7,600 10, 000 11,250 12, 500 12,750 13,000 13, 250 13,750 14,260 14,750 15,260 15, 760 24,470 Pouhds. 1,000 B,000 10, 000 20, 000 30,000 40, 000 45, 000 60, 000 51, OOO 52, 000 53, 000 55,000 57, 000 - 59, 000 '61,000 63, 000 97, 880 , Inch. 0. .000160 .000300 . 000625 . 000950 .001300 .001550 .002275 . 002675 .002925 .003225 .004500 .006375 .008125 .009600 .011375 Inch. 0. .000150 .000150 .000325 Inch. 0. 0. Jncft. 0. Initial load. Elastic limit belo'w 50,000 lbs. per sq. inch. Tensile strength. . 000350 .000260 . 000725 . 000400 .000250 . 000300 .001275 .001875 . 001760 .001375 .001875 . 000025 .000560 .000025 . 000625 1 I General summary. Tensile strength per square inch of original section pounds.. 97,880 Elongation per inch after rupture inch.. 0.1676 Beduction in diameter at point of rupture do... .114 Bednctionin area after rupture, per centum of original section j-. 36.4 Position of rapture -. 2"fromneok Character of DToken surface dull, silkv, 85per cent. ; granular, 15 percent. Elongation of inch sections ..".11, ".30*, ".13, ".09 372 12-INCH B. L. EIFLED MOETAES. HOGP B3. No. 3924. Marks, '^^.^^^ Diameter, ".564. Sectional area, .25 square inch. Gauged length, i". Applied loads. Elongation per inch. Snccessive elongation per inch. Permanent set. Sncoessive permanent «et. Bemarks. Total. Per square inch. Pounds. 250 1,250 2,500 6,000 7,500 10, 000 11, 250 12, 000 12, 760 13, 000 13, 250 13, 500 13, 760 14, 000 14,250 14, 600 14,760 16,250 15, 750 16, 250 16, 750 17, 250 26, 320 Pounds. 1,000 5,000 10, 000 20, 000 SO, 000 40, 000 45, 000 60, 000 61, 000 52, COO 53, 000 54, 000 53, 000 66, 000 67, 000 68, 000 59, 000 61, 000 63, 000 65, 000 67, 000 69, 000 105, 280 Inch. 0. . 000160 . 000400 . 000675 . 001000 . 001360 . 001550 .001750 . 001800 .001825 . 001900 . 001950 . 001975 . 002026 . 002160 ' . 002260 .002350 .002676 . 003450 . 004925 .000700 .008625 Inch. 0. . 000150 . 000250 . 000275 . 000325 . 000350 . 000200 . 000200 . 000050 . 000025 .000075 . 000050 . 000025 .000060 . 000125 . OOOIOO .000100 .000325 . 000775 . 001475 . 001775 . 001925 Inch. 0. 0. Imh. 0. Initial load. Elastic limit (not well defined). Tensile strength. . 000060 . 000050 . 000060 0. General summary. Tensile strength per square inch of original section pounds.. 105,280 Elastic limit per square inch of original section (not well deiined) do . . . 66, 000 Elongation per inch after rupture inch.. 0.1650 Elongation per inch under strain at elastic limit do... . 002025 Eeduction in diameter at point of rupture do... .084 deduction in area after rupture, per centum of original section 27. 6 Position of rupture 1" from neck Character of broken surface granular, radiating from a point in the ciroumferenoo Elongation of inch sections ".12, ".17, ".16, ".21* 12-lNCH B, L. RIFLED MOETAES. TSo. 3925. 373 Diameter, "'.564. Sectional area, .25 square inch. Ganged length, 4", Applied loads. Elongatioa per inch. Successive elongation per inch. Permanent set. Successive permanent sot. Hemarlis. Total. Per square Inch. - Pounds. 250 1,250 2,600 5,000 7,500 10,000 11,350 12, 500 12, 760 13, 000 13,250 13, 500 14, 000 14, 500 15, 000 15, 500 16, 000 26,260 Pounds. 1,000 5,000 10, 000 20, 000 80,000 40, 000 45, 000 50, 000 51, 000 52, 000 53, 000 54, 000 56, 000 58, 000 60, OOO 62, 000 64, 000 101, 040 Inch. 0. .000125 . 000300 . 000650 . 001025 .001375 .001575 . 001825 .001850 .001975 . 002075 . 002300 . 002925 . 004375 . 006125 . 007875 , 009375 Inch. 0. .000125 . 000175 . 000350 . 000375 . 000350 . 000200 . 0J0260 . 000035 .000125 .000100 . 000235 .000600 - .000450 . 001T50 .001750 .001500 Inch, 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. . 000025 .000075 . 000025 . 000050 General summary. Tensile strength per square incli of original section ponnds.. 101,040 Blastio limit per square inch of original section do... 51,000 Elongation per inch after rupture inch. . 0. 1525 Elongation per inch under strain at elastic limit do... .001850 Keduction in diameter at point of rapture do... , 104 Keduction in area after rupture, per centum of original section .' 33. 5 Position of rapture 2".15 from neck Character of broken surface gi-anular ; dull silky spot Elongation of inch eectiona ".10/M8, ".23*, ".10 374 13-lnch b. l. eipled mortars. Hoop B.. No. 3915. Diameter, '",564. Sectional area, .25 square inch. Gauged length, 4" Applied loads. Elongation per inch. Snooeesive elongation per incli. Permanent set. Successive permanent set. Bemarks. , Total. Per square incn. Foimds. 250 1,250 2,500 6,000 7,600 10, 000 11, 250 12, 500 12, 750 13, 000 13, 250 13,500 ].%750 14, 000 14, 260 14, 500 14, 750 15, 000 15, 500 16, 000 16, 500 17, 000 17, 600 26, 610 Pounds. 1,000 6,000 10, 000 20, 000 30, 000 40,000 45, 000 60, 000 51, 000 52,000 63, 000 54,000 55, 000 56, 000 67, 000 58, 000 59,000 60, 000 62, 000 64, 000 66, 000 68, 000 70, 000 106, 440 Inch. 0. . 000200 . 000425 .000700 . 001060 . 001425 . 001550 .001776 .001800 . 001826 .001S75 .001950 .0020-5 .002100 . 002200 . 002375 • . 002650 . 002876 .004125 .006760 .007426 .008950 .010300 Inch, 0. .000200 . 000225 .000275 .000360 .000375 .000125 .000225 . 000025 . 000026 .000050 .000075 .000076 . 000075 .000100 .000176 .000175 .000326 .001250 . 001625 . 001675 , 001525 .001350 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. . 000075 . 000075 .000075 0. ■ General summary. Tensile strengtiiper square inch of original section ponnds.. 106,440 Elastic limit per sqnare inch of original section - do... 57, ODO JBlongation per inch after mptnre Inch . . 0. 1475 Elongation per inch under strain at elastic limit do... ,002200 Beduction in diameter at point of rapture do . . . . 094 Bednction in area after rupture, per centnm of original section ; 30, 6 Position of rupture , 2". 50 from neck Character of broken surface granular; silky eccentric spot Elongation of inch sections 'MO, ".17,".23*,'^0fl 12-inch b. l. rifled mobtaks. Gas Check. 375 No. 3816. 12 U B, O Diameter, "'.504. Sectional area, .25 square inch. Ganged length, 3", Applied loads. Elongation per inch. SacceasiTe elongation per inch. Permanent set. Saccessive permanent set. Bemarks. TotaL Per square inch. P5 . 003200 . 004950 .006750 .008625 Inch, 0. .000125 .000175 . 000350 .000350 . 000375 . 000150 . 000225 . 000060 . 000025 . 000025 .000050 0. . 000100 . 000025 . 000125 .000100 .000100 .000275 . 000575 . 001760 . 001800 .001776 Inch, 0. 0. Inch, 0. Initial load. Elastic limit. 0. 0. " 1 General summary. Tens'ile strength per square incli of original section pounds . . Elastic limit per square incli of original section do .. Elongation per inch after rupture '. inch.. Elongation per inch under str^iin at elastic limit... do... Keductionin diameter at point of rupture do... deduction in area after rupture, per centnm of original section Position of rupture 2"ftomneclE Character of broken surface „ granular at circumference 60 per cent. ; silky center Elongation of inch sections ".10, ".28», ".14, ".11 108, 160 57. 000 0. 1575' . 002025 0.104 33.5 12-INCH B. L. RIFLED MOETAES. 381 Hoop B3 No. 3927. Marks, 12 MEjB, Diameter, ".564. Sectional area, ,25 square inch. Gauged length, 4". Applied loads. Elongation per inch. Snooessive elongation per incli. Permanent set. SuccessiTe permanent set. Remarks. Total. . Per square inch. Pound*. 250 1,250 2,500 ' 5,000 7,500 10,000 11,250 12, 500 12, 750 13,000 13, 250 13, 500 13,750 14, 000 14, 600 16, 000 15, 500 16, 000 16, 500 27, 090 Founds. 1,000 5,000 10, 000 20, OUO 30, 000 40, 000 45, 000 50,000 61, 000 ' 52,000 53, 000 54, 000 5!>, 000 66, 000 58, 000 60, 000 62, 000 64,000 66, 000 108, 360 Inch. 0. .000100 . 000275 . 000575 . 000975 .001275 .001450 . 001700 . 001725 .001750 . 001825 . 001975 .002125 . 002300 . 002850 . 003875 . 005175 ..006525 .008000, Inch. 0. -.000100 . 000176 . 000300 . 000400 . 000300 .000175 . 000250 . 000025 . 000025 . 000075 . . 000150 . 000150 . 000176 .000550 . 001025 .001300 . 000350 .001475 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strengtli. 0. 0. General summary. Tensile strengtli per square incIi of original section «... pounds.- 108,360 Elastic limit per square inch of original seotlon - J. do. -j 53,000 Elongation per inch after rupture - inch.. 0.1500 Elongation pep inch under strain at elastic limit do... .001825 Bednction in diameter at point of rupture ■ do... .081 Eednction in area after mptare, per centum of original section 27. 6 Position of rapture 1. 1".30 from neck Character of broken surface granular, silky center Elongation of inch aeotiona ".17, ".22*. ".11, ".10 382 12-INCH B. L. EIPLED MORTAES. 12-INCH B. L. MORlTAR, NO. 4. Hoop A3. No. 3876. Marks, i^^,^^-*-' Diameter, ".564. Sectional area, .25 square inch. Gauged length, 4". Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. Successive permanent set. Bern arks. Total. Per square inch. Pounds. 250 1,250 '2,600 5,000 7,500 10, 000 11,250 12, 500 12^760 13, 000 13,260 13, 500 13, 750 14,000 14, 250 14, 500 14,750 16, 000 16, 250 ,15,500 16, 000 16, 600 17, 000 17, 500 18, 000 26,980 Pounds. 1,000 5,000 10, 000 20, 000 30, 000 40, 000 45, 000 50, 000 61,000 62, 000 53, 000 64, 000 56, 000 56,000 57, 000 58, 000 69, 000 CO, 000 61, 000 62, 000 64, 000 66, 000 68, 000 70, 000 72, 000 107,920 Inoh. 0. . 000125 .000250 . 000525 . 000825 . 001125 .001325 . 001525 .001560 . 001575 .001625 . 001675 . 001726 .001775 .001825 .001876 . 001925 . 002050 . 002175, .002450 . 003625 . 005075 . 007000 . 008025 .010260 Inch. 0. .000126 .000185 . 000275 . 000300 ,000300' . 000200 .000200 . 000025 .000025 . 000050 . 000060 . 000050 . 000050 .000050 . 0000.60 . 000050 . 000125 . 000125 . 000275 . 001175 .001460 .001925 . 001625 .001625 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. 0. 0. "* General summary. Tensile strengtli per square inch of original section pounds.. 107,920 Elastic limit per square inch of original section , do... 59,000 Elongation per inch after rupture : inch.. 0.1400 Elongation per iucli under strain at elastic limit do... ,001925 . Keductionin diameter at point of rupture. do... ,084 Beduction in area after rupture, per centum of original section 27.8 Position of rupture .: - r'.50 from neck Character of broken surface granular, dull silky center Elongation of inoh sections , , ".09, 'M2» ".23*, ".12 12-lnch b. l. eifled moetaks. Hoop A<. 383 ISo. 3879. Marks, ^2 ME^ A. Diameter, ''.564. Sectional area, ,25 square inch. Gauged length, 4", Applied loads. Elongation per inch. Suooessive elongation per inch. Permanent Bet. Successive permanent set. Bemarks. Total. Per square inch. Poumdi. 250 - 1,250 2, 600 5,000 7,600 10,000 11,250 12, 500 12, 760 13,000 13,250 13, 500 13, 750 14, 000 14, 250 14, 500 14, 750 15, 000 15,250 16, 500 16,000 16, 500 17, COO 17, 500 18, 000 26,890 Founds, 1,000 6,000 10,000 20, 000 30, 000 40, 000 45,000 60, 000 61, 000 62,000 63,000 64,000 55, 000 66, OOO 67, 000 58,000 59, 000 60, 000 61, 000 62, 000 - 64, 000 66, 000 68, 000 70. 000 72; 000 107, 660 Inch, 0. . 000125 . 000350 . 000760 .001100 .001450 . 001000 .001775 . 001800 . 001660 .001900 . 001925 . 001975 .002050 .002125 . 002200 . 002260 . 002450 .002650 . 003150 .004260 .006100 . 008025 . 009750 .011250 Inch, 0. .000125 . 000225 .000400 . 000350 .000360 . 000150 .000176 . 000025 .000050 .000050 .000025 . 000050 .000075 .000075 .000075 . 000050 .000200 . 000200 . 000500 ' .001100 .001850 . 001926 .001725 .001600 Inch, 0. 0. Inch, 0. Initial load. Elastic limit. Tensile strength. . 000075 . 000075 . 000075 0. General summary. Tensile strength per square inch of original section pounds.. 107,560 Elastic limit per sqnare inch of original section do... 59,000 Elongation per incn after rnptnie inch.. 0.1550 Elongation per inch nnder strain at elastic limit do... .002260 Beouctionin diameter at point of rapture do... .104 Seduction in area after rupture, per centum of original section 33.5 Position of rupture 2" from neck Charactnre oibroken surface granular, silky center Elongation of inch sections , ". 09, ". 28*, ". 15, ".10 384 12-inch b. l. kifled moetaes. Hoop B^. Ho. 3882. Marks, 12 MR4B4 Diameter, ".564. "Sectional area, .25 square inch. Gauged length, 4". A.ppUed loads. Elongation per inch. Sncoessive elongation per inch. Permanent set. Saccessive permanent set. ilemarks. Total. Per square inch. Pounds. 250 1,250 2,500 5,000 7,500 10, 000 11, 250 12, 600 12,750 13, OCO 13, 250 13, 500 13,750 14,000 14,260 14, 500 14,760 15, 000 15, 600 16, 000 16, 600 17, 000 17, 600 25, 980 Pounds. 1,000 5,000 10, 000 20, 000 80, 000 40, 000 45, 000 50, 000 51, 000 62, 000 53, 000 54, 000 65, 000 56, 000 57,000 68, 000 69, 000 60, 000 62, 000 64,000 66, 000 68,000 70, 000 103,920 Inch. 0. . 000075 . 000200 . 00060C . 000850 .001200 . 001325 . 001600 .001650 . 001600 .001650 . 001700 . 001760 .001825 .001900 .002025 . 002150 . 002460 .003700 ; 005400 .007375 .008875 . 010625 Inch. 0. . 000075 . 000125 . 000300 . 000350 . 000350 . 000125 . 000175 . 000050 . 000050 . 000060 . 000050 . 000060 . 000075 . 000075 . 000125 . 000125 . 000300 . 001260 .001700 . 001975 . 001500 .001750 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. • 0, 0. General summary. Tensile strengrtli per square inch of original section poiinda.. 103,020 Elastic limit per square inch of original section , ., do... 57,000 Elongation per inch after rupture inch... 0,1725 .Elongation per inch under strain at elastic limit do... .001900 Heductionin diameter at point of rupture do..i ' 0,114 Heduetion in area after rupture, per centum of original section " 36. 4 Position of rupture ".15 from neck Character of broken surface silky, interspersed with granular metal at the circumference Elongation of inch sections , ".10, ",30*, ".18, ".11 12-INCH B. L. RIFLED MOETAKS. Hoop B5. No. 3877. Marks, 12 ^,g*^« Diameter ",564 Sectional area, .25 square inch. Gauged length, 4". 385 Applied loads. Blongation peruicli. Snocesaive elongation per inch. Permanent set. Snccosslve permanent set. K6mark8. Total. Per square inch. Pound*. 250 1,2S0 2,500 5,000 7,500 10, 000 11,250 12, 500 12, 750 13,000 13,250 13, 500 13,750 14,000 14,250 14^500. 14,760 IS, 000 15,250 15,500 1.5,750 16,000 16,500 17,000 17, 500 18, 000 18,500 27,190 Pounds. 1,000 6,000 10, 000 20,000 30,000 40, 000 45, 000 50,000 51,000 52,000 63, 000 64,000 55, 000 66,000 67,000 58,000 59, 000 60,000 61, 000 62, 000 63, 000 64,000 66, 000 68, 000 70, 000 72,000 74,000 108,760 Inch. 0. .000075 . 000250 . 000575 .000900 .001225 . 001400 . 001575 . 001600 .001650 .001675 . 001700 .001725 . 001775 . 001825 . 001825 . 001875 .001925 . 002000 .002125 . 002250 .002500 . 003500 , .005375 . 007325 . 009000 . 010750 Inch, 0. . 000075 .000175 .000325 . 000326 . 000325 .000175 . 000175 .000025 . 000050 . 000025 . 000026 . 000026 . 000050 . . 000050 0. . 000050 . 000060 . 000075 . 000125 .000125 . 000250 . 001000 .001875 . 001050 .001675 .001760 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. . 000060 . 000050 .000050 0. ^ General immmafy. Tensile strength per square inch of original section ponnds.. 108,760 Blastiv limit per square inch of original section do... 61,000 Elongation per inch after rupture ^ inch.. .1525 Blongation per inch under strain at elastic limit do... .002000 Induction iu diameter at point of rapture ^ do... .104 Seduction in area after rup ture, per centum of original section 33, 9 Position of rupture : . ; . 2" from necU Character of broken surface granular; silky center Elongation of inch sections ".08, ".14, ".27*, ".37 H. Ex. 165 25 386 12-inch b. l. rifled mortars. Trunnion Hoop. No. 3875. Marks, 12 \%''H Diameter, ".564. Sectional area, .25 square inch. Gauged length, 4". Applied loads. Successive elongation per inch. Permanent set. Saccessive permanent set. Komarks. Total. Per square inch. per inch. Pounds. 250 1,250 2,500 6,000 7,500 10, 000 11,250 12, 000 12, 600 12,750 13, 000 13,260 13, 500 13, 750 14,000 14,250 14, 500 14,760 16, OOO 15, 250 15, 600 16, 000 16, 500 17, 000 17, 600 18.000 26, 680 Pounds. 1,000 5,000 10, 000 20, 000 30, 000 40, 000 46. 000 48, 000 60, 000 61, 000 52, 000 53, 000 64, 000 66, 000 66, 000 57, 000 88, 000 69, 000 60, 000 81, 000 62,000 64, 000 66, 000 68,000 70, 000 72, 000 106, 320 Inch. 0. .000075 .000225 . 000576 .000976 . 001226 .001350 .001476 .001575 .001600 .001625 .001675 .001700 . 001725 .001800 .001826 .001875 . 001975 . 002050 . 002160 . 002376 . 003400 . 005300 . 0008?5 . 0088^5 .010700 Inch. 0. . 000076 . 000150 . 000350 . 00C40U . 000260 . 000125 .000125 .000100 . 000026 . 000026 .000060 . 000025 . 000025 . 000075 . 000025 . 000060 . 000100 . 000075 . 000100 . 000225 .001025 . 001900 . 001525 . 002000 .001876 Inch. 0. 0. Inch. 0. Initialload. Elastic limit not well defined. Tensile strength. 0. 0. , General summary. Tensile Btrengtli per square incli of original section ponnda.. 106,320 Elastic limit per Bqnare inch of original section, not well defined do... 58,000 Blongation per inch after rapture inch. . 0. 1525 Blongation per inch under strain at elastic limit do... .001876 Kednction in diameter at point of rupture .' do... .104 P^dnctionin area after rupture, per centum of original section 33.5 Posi tion of rupture 2".20 from neck Character of broken surface granular; silky center. Elongation of incii sections i.''.08, ".15, " 27*, ".11 12-INCH B. li. EIFLED MOETAES. Gas Check. No. 3880. 387 Mark8/2ME4GC Diameter, ".564. Sectional area, .25 square inch. Gauged length, 3". Applied loads. Elongation per inch. Saccessive elongation per inch. Formanent set. Snooessive permanent set. Kemarks. Total Per squate inch. Pounds. 250 1,250 2,600 7,600 12, 500 15, 000 17, 500 17,760 18,000 18,250 18, 500 18,760 19, 000 19, 250 19, 500 - 19, 750 20, 000 20, 250 ■ 20, 500 20, 750 21, 000 21, 500 22, 000 22,500 34,620 Pounds. 1,000 5,000 10,000 30, 000 60, OOO 60,000 70, 000 71,000 72,000 73,000 74, 000 75,000- 76,000 77.000 78, 000 79, 000 80, 000 81, 000 82, 000 83, 000 84,000 86, 000 88, 000 00, 000 138, 080 - inch. 0. .000167 . 000367 .001033 . 001733 .002067 . 002500 .002567 .002600 . 002633 .002700 . 002767 .002867 . 002967 .003100 . 003233 . 003433 . 003567 .003800 . 004133 . 004400 .005100 .006133 . 007200 Inch. 0. . 000167 . 000-200 . 000666 . 000700 . 000334 . 000433 . 000067 . 000033 . 000033 . 000067 . 0000'67 . 000100 . 000100 .000133 . 000133 . 000200 .000134 . 000233 . 000333 .000267 . 000700 .001033 . 001067 Inch. 0. 0. 0. Initial load. Bla.stio limit not well defined. Tensile strength. 1 . 000067 . 000133 .000007 .000066 General summary. Tensile strength per sqnareinch of original section ponnds.. 138,080 Elastic limit per sqaare inch of originafaection, not well defined do... 75,000 Elongation per inch after raptare inch.. ,1233 Elongation per inch under stralh at elastic limit do.., .002767^ Eeductionindiameteratpoint of rapture..,. '. do... .054 Redaction in area after rupture, per centum of original section 18.3 Position of rupture ".75 from neck Character of broken surface - granular; dull spot at the circumference Elongation of inch sections 'M4*, '^07, ".06 388 12-INCH B. 1,. RIFLED MOETAES. No. 3881. Marks, ^^^ifii^c Diameter, ".564. Sectional area, .25 square inch. Gauged length, 3". Applied loads. Elongation per inch. Snocessive elongation per inch. Permanent set. Snccossive permanent set. Bemarks. Total. Per square incli. Pounds. 250 1,250 2,600 7,600 12, 600 15, 000 17,500 17,750 18, OOO 18, 250 18, 600 19, 000 19, 500 . 20,000 20, 500 21, 000 33, 020 Pounds. 1,000 5,000 10, 000 30, 000 60, 000 60, OOO 70, 000 71,000 72, 000 73,000 74, 000 76, 000 78,000 80, 000 82, 000 84, 000 132, 080 ItiGh. 0. .000133 . 000333 . 001000 .001767 . 002067 . 002900 . 003067 . 003233 . 003467 .003700 . 004467 .005333 . 006333 . 007233 . 008500 Inch. 0. . 000133 J 000200 . 000667 . 000767 .000300 . 000833 .000167 . 0(10166 . 000234 . 000233 . 000767 . 000866 . 001000 .000900 . 001267 Inch. 0. 0. Inch. 0. Initial lo.ad. Elastiolimitbelojv 70,000 pounds per square iuoli. Tensile strength. ■ . 000067 . 000400 . 000067 .000333 . (r&neral summary. Tensile strODgth per square inch of original aection pounds.. 132,080 Elongation per inch after rupture inch.. .0933 Keductionin diameter at point of rupture ..,.do... .054: Hedaction in area after rupture, per centum of original section 18. 3 Position of rupture 1".50 from neck Character of broken surface .granular; dull spot at the circumference Elongation of inch sections ". 06, ". 15", ". 07 12-INCH B. L. EIFLED MOETAES. la-INCH B. L. MORTAR, NO. 5. Hoop A4. 389 No. 3899, Marks, i*\^'^« Diameter, ".564. Sectional area, .25 square iuch. Gauged length, 4". .. Applied loads. . Elongation per incii. Saocessive elongation per incli. Permanent set. Sncooseive permanent set. Eemarka. Total. Per 8(iii6,re incli, Pounds. ■ 250 '1,250 2,500 6,000 7,600 10,000 11,250 12, 500 12,760 13, 000 13, 250 13,500 13,750 14,000 14,250 14, 750 15, 260 15, 750 16, 250 16, 750 24,880 Pounds. 1,000 6,000 10, 000 20, 000 30, 000 40, 000 45, 000 50, 000 51, 000 62, 000 53, COO 54, 000 55, 000 56, 000 57, 000 59, 000 61,000 63, 000 65, 000 67, 000 99, 520 Inch, 0. .000150 . 000250 . 0U0B25 . 000926 .001250 . 001425 .001626 . 001650 .001675 . 001700 .001726 . 001830 .001976 . 002200 . 002675 . 0042.')0 . 006450 . 008025 .010500 Ineh. 0. . 000150 .000100 .000373 .000300 . 000325 .000175 .000200 .000025 . 000025 . 000025 . 000026 , . 000025 .000125 . 000^25 . 000475 . 001675 . 002200 .002175 .001876 Ineh. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. 0. 0. General summary. Tensile strength per square inch of orieinal section ponnds.. 9D, 520 Elastic limit per square inch of original section do... 54,000 Elongation per inch after rapture inch.. .1650 Eloflftation per inch under strain at elastic limit _..do... .001725 Kednction in diameter at point of rupture do... .114 Seduction in area after rupture, per centnm of original section '. 36.4 Position of rupture _. 1". 85 from neck Character of hrofcen surface - granular, silky center Elongation of inch sections ".08, 'M4, ".83*, ".1 390 12-INCH B. L. EIFLED MOETAKS. Hoop A. No. 3976. Marks/2ME^A, Diameter, ".504. Sectional area, .25 square incli. Gauged length, 4". Applied loads. Elongation per inoh. Suooesslve elongation per incli. Permanent set. Successive permanent set. Kemarks. Total. Per square iucli. Pounds. 250 1,250 2,500 5,000 7,500 10, 000 11, 250 12, 500 12, 750 13, 000 13, 250 13, 500 13, 750 14,000 14,250 14,600 14, 750 15, 000 15, 500 16, 000 16, 600 17,000 17, 600 25,290 Pounds. 1,000 6,000 10, 000 20, 000 30, 000 40, 000 46, 000 60, 000 51,000 52, 000 53, OUO 54, 000 55, 000 66, 000 67, 000 58, 000 59, 000 ' 60, 000 62, 000 64, 000 66, 000 68, 000 70, 000 101, 160 Inch. 0. . 000125 .000175 .000450 . 000775 . 001075 . 001275 .001600 .001550 . 001575 .001600 . 001650 . 0017UO . 001775 .001800 . 001900 . 002000 .002175 . 003375 . 006000 .007375 . 009200 . 011376 Inch. 0. . 000125 .000050 . 000275 .000325 . 000300 . 000200 .000225 . 000060 . 000025 . 000025 . 000050 .000050 .000075 . 000025 .000100 . 000100 .000175 .001200 .001625 .002375 . 001825 .002175 Inch. 0. -. 000050 Inch, 0. -.000050 Initial load. Elastic limit. Tensile strength. -.666075 -.000075 -.000025 0. — General summary. Tensile strength, per square inch of original section poonds.. 101,160 Elastic limit per square inch of original section do... 57,000 Elongation perinea after rapture inch.. 0.1625 Elongatioa per inch under strain at elastic limit do... .001800 Beduotion io diameter at point of rupture do..- . 134 Eeduction in area after rupture, per centum of original section . -* 41. 9 Position of rupture : 1''.50 from neck Character of broken surface silky, in part interspersed with grannlar metal Elongation of inch sections .'. 'M4, ".32% ".10, ".09 12-INClI B. L. RIFLED MOETAES. Hoop B5. No. 3922. 391 Marks, ^2?f,^»^» Diameter, ".564. Sectional area, .25 square inch. Gauged length, 4". Applied loads. EIoDgation per inch. Snoceaslve elongation per ineh. Permanent set. Suocessive permanent set. Ucmarks. TotaL Per square inch. Pounds. 250 1,250 2,500 5, 000 7,500 10, 000 11,260 12, 500 12, 750 13,000 13,260 13, 500 ' 13, 760 14, 000 14,250 U,500 14,750 15,000 lSf260 15, 750 16,260 16,750 17, 250 17,750 .27,070 Pounds. 1,000 5,000 10, 000 20,000 30,000 40, 000 45, 000 50, 000 , 51,000 62, 000 53,000 54,000 65, 000 56, 000 57, 000 58,000 69, 000 60, 000 61, 000 , 63,000 65, 000 67, 000 69, 000 71, 000 108,280 Inch. 0. . 000100 .-000300 .000675 . 001000 .001375 . 001525 . 001700 . 001750 .001775 . 001825 . 001850 . 001900 .001925 . 001975 .002026 . . 002126 .002225 .002360 . 002835 .004375 .005760 .007460 .009500 Inch. 0. .000100 .000200 . 000375 .000325 .000375 .000160 . 000175 . 000050 . 000025 . 000050 .000025 .000050 .000025 .000050 . 000050 . 000100 . 000100 .000125 . 000476 . 001560 .001375 . 001700 .002050 Inch. 0. 0. Inch. 0. Initial load Elastic limit. Tensile strength. .000026 . 000026 .000025 0. General summary. Tensile strength per sqnare incli of original section pounds.. 108,280 Blastic limit per sanare inch of original section do... 58,000 Elongation per inch after rupture inch.. .17 Elongation per inch under strain at elastic limit do... .002025 Eeduction in diameter at point of rupture '. -do... .104 Bednotion in area after rapture, per centum of original section .i s . . . 33. 5 Pbsition of rapture ; l".70from n'eek Character of broken surface 1 granular, silkv ceiiter Elongation of inch sections ".13, ".31*, ''.14, ".10 392 12-inch b. l. eifled moetars. Trunnion Hoop. No. 3923. Marks, ^^^Tf&^^ Diameter, ".564. Sectional area, .26 square inch. Gauged length, 4". Applied loads. Elongation per inch._ Suooossive eloEg:ation per inch. Permanent set. Successive permanent set. Bomarks. TotaL Per Bquare inch. Pounds. 250 1,250 2,500 5,000 7,500 10, 000 11,260 12, 000 12, 250 12, 500 12, 750 13, 000 18, 250 13,500 13, 750 14, 000 14,250 14, 500 15, 000 15, 500 16,000 16, 500 17, 000 24,980 Pounds. 1,000 5,000 10, 000 20,000 30, 000 40, 000 45, 000 48, 000 49, 000 50,000 51,000 52, 000 53, 000 54, 000 55, 000 66, 000 57, 000 58,000 60. 000 62, 000 64, 000 66, 000 68, 000 09, 920 Inch. 0. . 000125 . 000300 . 000600 . 000925 . OOISOO . 001425 . 001550 . 001575 . 001600 . 001650 . 001700 . 001760 .001800 .001850 . 001950 .002100 .002275 .003100 . 005000 . 007250 . 009350 .010750 Inch. 0. .000125 .000175 . OOOSno .000325 . 000375 .000125 . 000126 . 000025 .000025 . 000050 . 000050 .000050 ' . 000050 . 000060 .000100 .000160 .000175 .000825 .001900 . 002250 . 002100 . 001400 Inch. 0. 0. Inch. 0. Initial load. . Elastic limit. Tensile strength. 0. 0. General summary. Tensile atreDgth per square iDCh of original section pounds.- 99,920 Elastic liroitiper square inch of originaf section... do... 56,000 Elongation per inch after rupture , inch.. .1725 Elongation per inch under strain at elastic limit do... .001850 Eeduction in diameter at point of rupture do... .134 Beduction in area after mpture, per centum of original section 41.9 Position of rupture 1",70 from neck Character of broken surface silky, in part interspersed with ipranular metal 12-INCH B. L. RIFLED MORTARS. 12-IlfCH B. L. MORTAR, NO. 6. Hoop A^. 393 No. 3974. Diameter, ".564, Sectional area, .25 square inch. Gauged length, 4". Applied Ioa''^3^-^» Diameter, ".564. Sectional area, .25 square inch. Gauged length, 4". Applied loads. Elongation per inch. Snccessive elongation per inch. Permanent set. Successive permanent set. Bemarks. Total. Per sqnare inbn. jPounds. 260 1,260 2, .100 5,000 7,500 10, OOO 11,250 12,500 12,750 13, 000 13,250 13,600 13,760 14, 000 14,260 14,750 15,250 15, 750 16, 250 .16,760 27,290 Founds. 1,000 5,000 10, 000 20,000 30,000 40, OOO 45, 000 60,000 51,000 52, 000 53, 000 54,000 55, 000 56, 000 57,000 59, 000 61, 000 63,000 65, 000 67,000 109, 160 Inch. 0. .000150 . 000300 .000575 . 00U950 .001275 . 001450 .001660 . 001675 .0017C0 . 001760 .001800 .001900 . 002000 . 002126 .002460 .003126 .004200 . 00.6750 . 007500 Inch. 0. . 000160 . 000150 .000275 .000375 .000326 .000176 , 000200 . 000026 .000025 . 000050 .000050 . 000100 . 000100 .000125 . 000326 . 000676 .001076 .001660 . 001750 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. 0. 0. - -- General summary. Tensile strength per sqnare inch of original section pounds.. 109, J60 Elastic limit per square inch of original section .do... 54,000 Elongation per inch after rapture inch.. .1325 Elongation per inch under strain at elastic limit do... .001800 Bednctionin diameter at point of rupture do... .084 Bednctionin area after rapture, per centum of original section r 27.6 Position of rupture 2". 15 from neck Character of hroken surface granular; silky center Elongation of inch sections ".09, ".20*, ".15, ".09 H. Ex. 165 26 402 12-INCH B. L. RIFLED MOETAKS. No. 4149. Marks, ^^m^Bs Diameter, ".564. Sectional area, .25 square inch. Gauged length, 4". Applied loads. Elongation per incli. Successive elongation perincli. Permanent set. Successive permanent set. Eemarlss. Total. Per square inch. Pounds. 2i0 1,250 2; 500 5,000 7,500 10, 000 11, 250 12, 600 12,750 13, 000 13, 250 13, 500 13, 750 14, 000 14, 500 15, 000 16, 600 16, 000 16, 600 26, 970 Pounds. 1,000 5, 000 10, 000 20, 000 30, 000 40, 000 45, 000 •50, 000 51, 000 62, 000 -53, 000 64,000 56, 000 56, 000 68, 000 60, 000 62, 000 64, 000 66, 000 107, 880 Inch. 0. . 000125 .000275 . 000600 . 000950 . 001300 . 001475 . 001675 . 001700 . 001760 . 001775 . 001800 . 002100 ."002276 . 00:825 . 003875 . 005250 . 006750 . 008450 Inch. 0. . 000125 .000150 . 000325 . 000350 . 000350 . 000175 . 000200 . 000025 . 000050 . 000025 . 000125 . 000200 .000176 . 00O5.')O . 001050 . 001375 . 001501) .001700 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. 0. 0. Genei'al summary. Tensile strength per square inch of original section pounds , . 107, 880 Elastic limit per square inch of original section do... 53, 000 £!longation per inch after rupture inch.. . 1500 Elongation per inch under strain at elastic limit do... .001775 Keduction iu diameter at point of rupture do... .074 KednctioD in area after rupture, per centum of^original section 24.6 Position of rupture 2". 20 from neck Character of broken surface granular, radiating from a dull spot at the circumlorence. jllongationof inch sections -,.... ...."J.0, ".18, ".21*, ",11 12- INCH B. L. RIFLED MOETARS. 12-rNCH B. I. MORTAR, NO. 9. Hoop A4. No. 4125. 403 Marts, 12 '^fs^* Diameter, ".564. Sectional area, .25 square inch. Gauged length, 4". Applied loads. Elongation per inch. Succesaive elongation per inch. Permanent set. Siicceasivo permanent set. Kemarks. Total. Per square inch. Poundt. 250 1,250 2,500 5,000 7,600 10, 000 11,250 12, 500 12, 750 13, 000 13,250 13, 500 13, 750 14, 000 14, 260 14, 750 15,250 15, 760 16,250 16,750 25,580 Pounds. 1,000 5,000 10, 000 20, 000 30, 000 40, 000 45,000 50, 000 51,000 52, 000 53, 000 54,000 55,000 56, 000 57, 000 59, 000 61, 000 63, 000 65,000 67,000 102,320 Inch. 0. . 000150 .000400 .000725 . 001050 .001450 . 001600 . 001800 .001850 . 001900 .001950 . 002000 .002100 . 002350 . 0C2600 . 004050 .005875 . 007750 .009:)75 . 011250 Inch. 0. .000150 . 000250 . 000325 . 000325 . 000400 . 000150 . 000200 . 000050 . 000050 . 000050 . 000050 . 000100 . 000250 .000260 . 0U1450 . 001825 . 001875 .001625 .001875 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. . 000025 -. . 000025 .000025" 0. 1 Genei'al summary. Teusile Btrength per sqaare inch of oriffinal fiection pounds.. 102,320 Elastic limit per square inch of original aection do... 54, 000' Elongation per inch after rupture inch . . . 1750 Elongation per inch under strain at elastic limit do. . . . 002000 Beduction in diameter at point of nipture , do... . 114 deduction in area after rupture, per centum of original aection 3G. 4 Position of rupture 1 1-.1".40 from neck Character of broken surface silky center ; granular at circumference iglongationofinclisectiona,..,..., , ,...,,,,..,„".U, ".14, ".29*, 'M6 404 12-INCH B. L. RIFLED MOETAES. Hoop Ac. No. 4144. Marks, i^m^a. Diameter, ''.564. Sectional area, .25 square inch. Gauged length, 4". Applied loads. EloDgation per inch. Successive elongation per inch. Permanent set. Successive permanent set. Eemarka. Total. Per square inch. Pounds: 250 1,250 2,600 5, 000 7,500 10, 000 11, 250 12, 600 12, 750 13, 000 13, 250 13, 500 13j 760 14, 000 . 14, 250 14, 750 15,260 15, 750 16,260 16, 760 25, 680 Pounds. 1,000 5,000 10, 000 20,000 30,000 40, 000 45, 000 50, 000 51, 000 52, 000 53, 000 54, 000 55,000 56, 000 57, 000 69, 000 61, 000 63, 000 66, 000 67, 000 102, 320 Inch. 0. . 000150 .000300 . 000700 . 001025 .001350 . 001475 .001650 .001700 .1101725 . 001775 . 001825 .001925 . 002075 .002200 . 003000 . 004250 .006500 . 008450 . 010260 Inch. 0. . 000150 . 000160 . 000400 . 000325 . 000325 . 000125 .000175 . 000060 .000025 . 000060 . 000060 . 000100 . 900150 . 000125 . 000800 .001260 . 002250 . 001950 .001800 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. 0. 0. . General summary. Tensile strength per square inch of original section ._ pounds.. 102,320 Elastic limit per square inch of original section do... 54, 000 Elongation per inch after rapture _ inch.. .1675 Elongation per inch under strain at elastic limit do... .001825 Keduction in diameter at point of rapture do . . . . 094 Beductionin area after rupture, per centum of original section 30.6 Position of rapture 1". 75 from neck Character of broken surface granular; dull eccentric spot Elongation of inch sections ".11, ."15, ".28*', ".13 12-INCH B. L. RIFLED MORTARS, Hoop Bi. 405 No. 4142, Marks, ^^5f^"^' Diameter, ".5G4. Sectional area, .25 square inch. Gauged length, 4". Applied loads. Klongation per inch. Snocessive eloB cation per inch. Permanent set. Successive permanent set. Eemarks. Total. Per square inch. Pound). 250 1,250 2,500 5,000 7,500 10, 000 11, 250 12, 500 12, 750 13, 000 13, 250 13, 500 13,750 14, 000 14, 260 14, 500 14, 750 16, 000 15, 500 16, 000 16, 500 17, 000 17,500 26,080 Pounds. 1.000 5,000 10, 000 20, 000 30, 000 40, 000 45, 000 50, 000 61, 000 52, 000 63, 000 64, 000 65,000 56, 000 67, 000 68, 000 59, OOO 60, 000 62, 000 64, 000 68, 000 68, 000 70, 000 104, 320 Inch. 0. . 000150 . 000325 . 000700 .001076 .001450 .001625 , 001800 .001825 .001875 . 001925 . 002000 .002026 • . 002050 . 002125 . 002250 . 002350 . 002700 .004375 . 000500 . 008375 .010050 .012050 Inch. 0. .000150 . 000176 .000375 .000375 . 000375 .000175 . 000175 . 000025 . 000050 . 000050 . 000075 .000025 . 000025 . 000075 .000125 .000100 . 000350 .001675 . 002125 . 001875 .001675 . 002000 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strengti. . 000025 . 000025 . 000025 0. General summary. Tensile strength per square inoli of original section ponnds Elastic limit per sqnare inisb of original section '. do. Elongation per inch after rupture , inch Elongation per inch under strain at elastic limit do. Seduction in diameter at point of rupture do. Reduction in area after rapture, per centum of original section , Position of rupture 1. "75 from neclc Character of broken surface silky, interspersed with granular metal at the circumference Elongation of inch sections ".10, ".18, ".34*, " 10 104, 320 57, 000 .1900 . 002125 .134 41.9 406 12-INCH B. L. RIFLEI\ MORTARS. 12-INCH B. L. MORTAR, NO. 10. Hoop A,. No. 4128. Marks, i^mBioA, Diameter, ".564. Sectional area, .25 square inch. Gauged length, 4". Applied loads. Elongation per jnch. Sttcoessive elongation per inch. Permanent set. Sncceasive permanent set. Remarks. Total. Per square is eh. Pounds. 250 1,250 2,500 6,000 7,600 10, 000 11,250 12,500 12, 760 13, 000 13, 250 13,600 13, 750 14, 000 14, 250 14, 500 14, 760 15, 000 15, 250 15,600 15, 750 16, 000 16, 500 17,000 17, 600 18, 000 18, 500 27, 690 Pounds. 1,000 5,000 10, 000 20, 000 30, 000 40, 000 45, 000 60, 000 51,000 52, OOO 63, 000 64,000 65, 000 66, 000 57, 000 58, 000 59, 000 60, 000 61, 000 62, 000 63, 000 64, 000 60, 000 68, 000 70, 000 72, 000 74,000 110, 360 Inch. 0. . 000150 . 000375 . 000675 .001025 .001375 . 001525 .001675 .001725 .001750 .001776 .001825 . 001875 .001950 . 002000 . 002050 .002100 . 002200 . 002275 . 002425 .002550 . 002926 . 003925 .005700 . 007500 . 009260 . 010826 Inch. 0. . 000150 . 000225 . 000300 . 000350 . 000350 . 000150 . 000150 . 000060 . 000025 . (100025 . 000050 .000050 . 000075 . 000030 . 000050 . 000050 .000100 . 000075 .000160 . 000125 . . 000375 . 001000 . 001776 . 001800 . 001760 . 001576 Inch. 0. 0. Inch. 0. luitial load. Elastic limit. Tensile strength. 0. 0. . General summary. Tensile strenficth per square inch of original section pounds.. Elastic limit per square inch of original section do... Slongation per inch after rupture 1 inch.. - Elongation per inch under strain at elastic limit do... Reduction in diameter at point of rupture ■. do... -Reduction in area after rupture, per centum of original section Position of rapture 1".90 from neck Character of broken surface granular, radiating from a small doll spot in circumference Elongation of Inch sections ".09, ".20*, ".13, ".10 110, 360 61, 000 .13 . 002275 .064 21.4 12-INCH B. L. RIFLED MOETAES. Hoop Ag, 407 No. 4153. Marks, '2^fi{A» Diameter, ".564. Sectional area, .25 square inch. Gauged length, 4". Applied loads. Elongation per inch. SncoeBsive elOD Q;ation per inch. Permanent set. Successive permanent set. Kemarks. Total. Per aqnare inch. Pounds, 230 1, :£5G 2,600 5,000 7,500 10, 000 11,250 12, 500 12, 760 13, 000 13,250 13, 500 13,750 14, 000 14,250 14, 500 14, 750 15,000 15, 500 16, 000 16, 600 17, 000 17, 500 26,470 Pounds. 1,000 5,000 10,000 20, 000 30, 000 40, 000 45,000 SO, OUO 51,000 52,000 53,000 54,000 55,000 56, OOO 57,000 68,000 69. GOO 60, 000 62, 000 64, 000 66,000 68,000 70, 000 101, 880 Inch. 0. .000100 . 000300 . 000700 .001075 . 001425 . 001575 .001775 . 001800 .001825 .001875 . 001925 . 001960 .002000 . 002050 . 002200 . 002325 . 002825 .oo-ins . 00725U . 009000 . 011000 .012875 Inch. 0. . 000100 . 000300 . 000400 . 000375 . 000350 .000150 . 000200 . 000025 . 000025 . 1,00050 . 000030 . 000025 . 000050 . 000050 . 000150 . 000125 .000500 . 002350 .002075 .001760 .002000 .001875 Inch 0. 0, Incfu 0. Initial load. Elastic limit. Tensile strength. .0C0150 .000175 .000160 . 000025 General summary. Tensile strenf^tli per square inch of original section >. ..pounds.. 101,880 Elastic limit per aquare inch of origiDal section do... 57,000 Elongation per incn after ruptnre inch.. .1775 Elongation per inch under strain at elastic limit do. .. ,002050 Keduction in diameter at point of rapture do... .134 deduction in areaafter rapture, per centum of oiiginal section 41.9 Po.sition of rupture 1".7 from neck Character of broken surface silky, interspersed with granular metal at the circumference Elongation of inch sections *. ".13, ".34*, ".14, ".10 408 12-lnch b. l. kifled moetaes. Hoop Bi. So. 4146. MarkM, i2Me,oB. Diameter, ".564. Sectional area, .25 square inch. Gauged length, 4". Applied loads. EloEgation per ineli. Successive elongation per inch. Permanent set. Successive permanent set. Remarks. Total. Per square inch. Pounds. 250 1,250 2,500 5,000 7,500 10,000 11, 250 12, .500 12, 750 13,000 13,250 13, 500 13, 760 14,000 14, 250 14,500 14, 760 15,000 15,500 16, 000 16, 500 17,000 17, 600 25, 170 Pounds. 1,000 6,000 10, 000 20, 000 30, 000 40, 000 45, 000 50, 000 51,000 52, 000 53, 000 54,000 55, 000 56, 000 67, 000 58, 000 69,000 00, 000 62,000 04, 000 60, 000 68,000 70, 000 100,680 Inch. 0. .000175 . 000325 .000700 . 001000 .001500 .001700 . 001800 .001825 . 001875 . 001925 .001950 . 002000 . 002050 . 002100 . 003200 . 002300 . 002526 .003600 . 006750 . 008050 . 010250 . 012250 Inch. 0. . 000175 . 000160 . 000375 . 000300 . 000500 .000200 . 000100 . 000025 . 000050 . 000050 .000025 . 000050 . 000050 . 000050 . 000100 . 000100 .000225 .000975 . 002250 . 002300 . 002200 .002000 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. .000025 . 000025 . 000025 0. General summary. Tensile strengtli per square inch of original section pounds.. 100,680 Elastic limit per square incti of origiu^ section do... 57.000 Elongation per inch after rupture inch . . . 1675 Elongation per inch under strain at elastic limit do... . 003100 S^eduction in diameter at point of rupture do. . . . 114 Eeduction. iu area after rupture, per centum of origiiuil section 36.4 Position of rupture T'.eo from neck Character of broken surface granular, 60 per cent.; silky, 40 per cent. Elongation of inch sections ",12, ".30*, ".18, ".12 12-INCH B. L. KIFLED M0ETAE8. 12-INCH B. L. MORTAR, NO. 11. Hoop A4. No. 4143. 409 Marks, 12 ^T?(J^' Diameter, ".564. Sectional area, .25 square inch. Gauged length, 4". Applied loafla. Elongation perincli. Sacoessive elongation per inch. Permanent set. Successive permanent set. Komarks. Total. Per square incn. Pounds. 250 1,250 2,500 5,000 7,500 10,000 11, 250 12, 500 12, 750 13, 000 13, 250 13,500 13, 750 14, 000 14, 250 14, 500 14, 760 15, 000 . 15, 250 15, 750 16, 260 IB, 750 17, 250 17, 750 25, 630 Pounds. 1, 000 5,000 10, 000 20, 000 30, 000 40, 000 45, 000 50,000 51, 000 52, 000 53, 000 54,000 55, 000 56, 000 57, 000 58, 000 59, 000 60, 000 61, 000 63, 000 65, 000 .67, 000 69, 000 71, 000 102, 620 Inch. 0. .000150 . 000300 .000650 . 001000 . 001325 ,-001500 . 001700 . 001725 . 001750 . 001800 . 001825 . 001875 .001925 . 001975 - . 002060 . 002200 .002450 . 002800 .004500 . 006875 . 008750 . 010700 .012750 Inch. 0. . 000150 .000150 . 000350 . . 000350 . 000325 . 000175 . 000200 .000025 . 000025 .000050 . 000025 .000050 . 000050 . 000050 . 000075 .000150 . 000260 .000350 . 001700 . 902376 . 001875 . 001960 . 002050 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. .0 .0 General summary. Tensile strength per square inch of original section pounds . - 1C2, 520 Elastic limit per sqaare inch of original section do . . . 58, 000 Elongation per inch after rupinre .inch.. .1625 Elongation per inch under strain at elastic limit d6... .002030 Bednction in diameterat point of rupture do... . 104 Reduction in area after rapture, per centum of original eoclion 33.5 Position of rupture 1".45 from neck Character of broken surface granular, silky center Elongation of inch sections ".09, ".13, ".28*, ".15 410 12-INCH B. L. RIFLED M0KTAK8. Hoop B5. No. 4150. Marts, ^^Vo^" Diameter, ".564. Sectional area, .25 square inch. Crauged length, 4". Applied loads. Elongation per inch. Snocessive elongation ' per inch. Permanent set. SnocessiTo permanent set. Kemarks. Total. Per square inch. Pounds. 250 1,250 2,600 5,000 7,500 10, 000 11, 260 12, 500 12,750 13, 000 13, 250 13,500 13, 760 14,000 14,250 14, 600 15, 000 15, 500 16,000 16, 500 17, 000 25, 820 Pounds. 1,000 5,000 10, 000 20, 000 30, 000 40, 000 45, 000 50, 000 61, 000 52, 000 63, 000 54, 000 55, 000 56, 000 57, 000 68, 000 60, 000 62, QOO 64, 000 66, 000 68, 000 103, 280 Inch. 0. .000100 . 000275 . 000575 . 000950 . 001276 . 001425 . 001600 .001650 .001675 .001725 .001760 . 001775 . 001850 . 002025 . 002260 .002960 . 004625 .006500 . 008625 .010375 Inch. 0. . 000100 . 000175 . 000300 .000375 . 000325 . 000160 .000175 .000050 . 000025 . 000030 .000025 . 000025 . 000075 .000176 .000226 . 000700 . 001675 . 001875 .002125 . 001750 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Xenaile strength. 0. 0. General summarrj. Tensile strength per square incTi of original section ^ ponnds.. 103,280 Elastic limit per sqaare inch of original section do... 55, 000 Elongation per inch after rupture inch.. . 1800 Elongation per inch under strain at elastic limit do... .001775 Reduction in diameter at point of rupture do... .134 Keduetion in area after rapture, per centum of original section 41.9 Position of rupture.... l."70 from neck Character of broken surface silky, interspersed with granular metal at the circumference Elongation of inch sections.. ".12, ".15, ",33*, ".12 12-INCH B. L. RIFLED MOKTAES, 12-IlirCH B. L. MORTAR, NO. 12. Hoop, A4. No. 4151. Marks, i^mb^.a* Diameter, ".564. Sectional area, .25 square inch. Gauged length, 4". 411 Applied loads. Elongation per inch. Successive elongation per incli. Permanent set. Succeeaive permanent set. Remarks. Total. Per square incn. Pounde, 250 1,250 2, 500 5,000 7, 500 10,000 11,250 12,500 12,750 13, 000 13,250 13, 500 13,760 14, 000 14, 260 14,500 15, 000 16, 500 16,000 16, 500 17, 000 ■ 25,620 Poundt. 1,000 5,000 10,000 20, 000 30, 000 40, 000 46, 000 50, 000 51, 000 52,000 53,000 54, 000 55, 000 66, 000 57, 000 58, 000 60, 000 62, 000 64,000 66, 000 6S, 000 102,480 Inch. 0. .000150 .000300 . 000625 .001035 . 001300 .001475 .001650 . 001700 .001760 . 001775 . 001825 . 00187.'* . 002060 . 002375 . 002926 . 004750 . 00U70C . 008375 . 010000 .011875 Inch. 0. .000160 . 000160 .000325 .000400 . 000275 . 000175 . 000175 . 000050 . 000050 .000026 . 000030 . 000060 .000175 . 00U32S . 000650 .001826 . 001960 . 001676 .001625 . 001875 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. 0. 0. General summary. Tensile strength per square incU of original section pounds.. 102, iPO Elastic limit per square inch, of original section do... 55,000 Elongation per incn after rupture , inch.. .1700 Elongation per inch under strain at elastic limit do... .001875 .JRuductionin diameter at point of rupture do... .124 Keduction in area after rupture, per centum of original section 39. 2 Position of rupture I". 45 from neok Character of broken surface silky, interspersed with granular metal at the circumference Elongation of inch sections ".10, ".12, ".29% "17 412 12-INCH B. L. RIFLED M0ETAE8. Hoop Bi. No. 4154. Marks, i^m^^^b, Diameter, ".564. Sectional area, .25 square inch Gauged length, 4". Applied loads. Elongation per inch. Successiye elongation per inch. Permanent set. Successive permanent set. Kemarkfl. Total. Per square incb. P0U7ldS. 250 1, 250 2,600 6,000 7,600 10, 000 11, 250 12, 500 12,750 13, 000 .13, 250 13, 500 13, 750 14,000 14, 250 14, 500 . 14, 750 15, 000 16,250 15, 500 15, 750 16, 000 16, 500 17, 000 17, 600 18, 000 18, 500 27, 910 ■ Pounds. 1,000 5,000 10,000 20, 000 30, 000 40, 000 45, OOO 60, 000 51, 000 52,000 53, 000 54,000 55, 000 56, 000 67, 000 58, 000 59,000 60, 000 61, 000 62, 000 63, 000 64, 000 66, 000 68, 000 70, 000 72, 000 74, 000 111, 640 Inch. 0. .000125 . 000300 . 000600 . 000950 . 001275 . 001450 . 001600 . 001650 . 001675 .001725 . 001750 . 001775 . 001800 .001825 . 001875 . 001925 . 001975 . 002000 .002075 .002160 .002300 . 002700 .004500 .006550 .008250 . 009875 Inch. 0. .000125 .000175 . 000300 . 000350 .000325 . 000175 .000150 . 000050 . 000025 . 0000.50 . 000025 .000025 .000525 . 000026 . 000050 .000050 . 000050 .000026 . 000075 . 000075 . 000150 . 000400 .001800 . 002050 . 001700 .001625 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. 0. 0. General summary. Tensile strengtli per sqnare incli of origiual section. pounds.. 111,040 Elastic limit per square inch of original section do . . . 61, 000 Elongation per inch after rupture inch.. .1475 Elongation per inch under strain at elastic limit do... .002000 Heduction in diameter at point of rupture do . . . . 104 Heductionin area after rupture, per centum of original section , 33.5 Position of rnpture "1,05 from neck Character of broken surface granular, silky center Elongation of inch sections '\22*, ".17, ".11, ".09 12-INCH B. L. KIFLED MORTARS. 12I1NCH B. L. MORTAR, NO. 13. Hoop A3. No. 4156. 413 Diameter, "^564. Sectioual area, .25 square inch. Gauged lengtb, 4". Applied loa:la. Elongation per inch. Saccessive elongation per inch. Permanent set. Snooessive pernranent set. Remarks. Total. Per square inch. Pounds. 250 1,250 2,500 5, 000 7,500 10, 000 11,250 12, 500 12,750 13, 000 13,250 13, 500 13,750 14,000 14,250 14, 500 14, 750 15, 000 15, 260 15, 500 16,000 16, 500 17,000 17, 500 18, 000 25,410 Pounds. 1,000 5,000 10,000 20, 000 30,000 40, 000 45,000 50,000 51,000 62,000 53,000 . 54,000 65, 000 56,000 57,000 58,000 69, 000 60, 000 61, 000 62, 000 64,000 66, 000 68,000 70, 000 72, 000 101, 640 Inch. 0. .000125 . 000300 .000850 .001025 . 001400 . 001550 . 001750 .0'01775 .001800 .0CM50 . 001900 .001950 . 001975 . 002000 . 002050 . 002100 . 002200 .003300 . 002550 . 004375 .008950 . 009125 . 011125 . 013125 Inch. 0. . .000125 . 000175 . 000350 . 000375 . 000-l7» . 000150 . 000200 . 000025 . 000025 . 000050 .000050 . 000050 . 000025 . 000025 . 000050 . 000050 . 000100 . 000 100 . 000250 .001825 . 002575 . 002175 . 002000 . 002U00 Inch. 0. 0. Inch. 0. Initial load. Elastic limit Tensile strength. 0. 0. General summari}. Tensile strength, per square inch of original section pounds.. 101.640 Elasticlimit per square inch of originarsection : -do... 59,000 Elongation per inch after rapture inch.- .1775 Elongation per inch under strain at elastic limit - do... . 002100 KedaotioniudiamettfatpoiDt of rupture do... .154 Bednotaon in area after rapture, per conturu of original section 47. 2 position of rapture -' at middle of stem Character of broken surface silky ; trace of granulation Elongation of inch sectiflns , - ,^ " 10, ".29*. ".25*. ".07 414 12-inch b l, rifled mortars. Hoop B,. Marks, 12 ^3^i»^' Diameter, ".564. Sectional area, .25 square inch. Gauged length, 4". No. 4166. Applied loads. EloDgation per inch. Successive elongation per incli. Permanent set. Successive permanent set. Bemarks. Total. Per square incn. Pounds. 250 1,250 2,600 6,000 7,500 10,000 11, 250 12, 500 12, 760 13, 000 13, 250 ' 13,500 13, 750 14, 000 14, 500 15, 000 15. 600 16,000 16, 500 25, 030 Pounds. 1,000 5,000 10, OOO 20, 000 30,000 40, 000 45, 000 60, 000 51, 000 52,000 53, 000 64, 000 56, 000 56,000 58,000 60, 000 62, 000 64, 000 66, 000 100,120- Inch. 0. . 000126 . 000350 . 000700 .0011 00 .001425 .001600 .001825 . 001850 .001875 . 001935 .002100 . 002326 . 003000 . 004876 . 006775 . 008500 . 010425 ,.012000 Inch. 0. . 000125 . 000226 . 000350 . 000400 . 000325 . 000175 .000226 . 000025 . 000025 . 0000.50 .000175 . 000225 . 000675 .001875 . 001900 .001725 .001925 .001675 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. .000100 . 000100 . 000100 0. . General summary. Tensile strength per square incb. of original section pounds.. 100,120 Elastic limit per squaro-inch. of original section do... 53, 000 Elongation per incb after rupture inch.. .1750 Elongation per inch under strain at elastic limit ,., do... .001925 Keduotion in diameter at point of ruptnre ., ,., do... . 134 Keduction in area after rupture, per centum of original section 41. ft Fositiott of rupture 1".3 from neck Character of broken surface silky, interspersed with granular metal at the circumference Elongation of inch sections ,,,,, ",18, ".28*, ". 13, ".IJ 12-INCH B. L. RIFLED MORTARS. 12-INCH B. L. MOETAR, NO. 14. Hoop A4, No, 4155. 415 Marks, ^^\^'^^ Diameter, "'.56i. Sectional area, .25 square inch. Gauged length, 4". Applied loads. Elongation per iucb. Successive elongation per inch. Permanent set. Successive penuanont set. Remavks. Total. Per stiuare inch. Pounde. 250 1,250 2,600 5,000 7,500 10, 000 11, 259 12, 500 12, 750 13, 000 13, 250 13, 500 13, 750 14, 000 14,500 15, 000 15, 500 16, 000 16, 500 23, 820 Pounds. 1,000 6,000 10, 000 20, 000 30, 000 40, 000 45, 000 50, 000 51, 000 62. 000 53,000 64, 000 66, 000 66, 000 68, 000 60, 000 62, 000 64, 000 66, 000 95, 280 Inch. 0. .000100 . 000250 . 000560 .000925 . 001225 .001400 .001550 .M1600 .001625 .001675 . 001776 . 002250 . 004200 .006750 .009600 .010625 . 012500 .016126 Inch. 0. OOnioo . 000150 . 000300 . 000375 . 000300 . 000175 .000150 . 000050 .000025 . 000080 .000100 . 000475 . 002(150 . 002.550 . 002750 . 001125 . 001875 . 002625 Inch, 0. 0. Inch. 0. Initial load. Elastic limit. Tensile atrengtb. 0. 0. Gen&i'ol summary. ^ Tensile strength per square inch of original section , pounds.. 95,280 Elastlclimit per square inch of original section j.do... 53,000 Elongation per inch after rupture inch . . . 2075 Elongation per inch under strain at elastic limit ; do... .001675 Kedactionin diameter at point of rupture do... .174 Keduction in area after rupture, per centum of original section 52. 2 Position of rupture 2" .05 from neck Character of broken surface silky Elongation of inch sections ".12, ".a*, M8, ".12 416 12-INCH B. L. RIFLED MOKTAES. Hoop B5. No. 4261. Marks, 12 MEjjB, Diameter, ".564. Sectional area, .25 square inch. Gauged length, 4". Applied loads. Elongation per inch. Successive elongation pet- inch. Permanent set. Successive permanent set.. Semarks. Total. Per square inch. Pounds. 250 1,250 2,600 5,000 7,500 10, 000 11,250 12, 600 12, 760 13,000 13,250 13, 500 13, 750 14, 000 14, 2,')0 14, 500 15, 000 15, 500 16, 000 16, 500 17, 000 25, 390 Pounds. 1,000 5,100 10, 000 20, 000 30, 000 40, 000 45, 000 60,000 51, 000 52, 000 53,000 - 54, 000 B5, 000 56, 000 67, 000 68, 000 60, 000 62, 000 64, 000 66, 000 68, 000 101, 560 Inch. 0. 000100 .000226 . 000."i50 . 000900 .001250 . 001425 . 001600 . 001650 . 001700 .001726 .001750 .001826 . 002075 . 002525 .003675 . 005725 ■ .007250 .008750 . 010700 .012400 Inch. 0. . 000100 .000125 . 000325 .000350 . 000360 . 000175 .000175 . 000050 . 000060 . 000025 . 000025 .000075 .000250 . 000450 .001150 . 002060 . 001526 .001500 .001950 .001700 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. 0. .000025 . 000025 Qenei'ol summary. Tensilp strength per square inch, of original section pounds.. 101,560 Elastic limit per square inch of original section do... 55,000 Elongation per inch after rapture inch.. .1750 Elongation per inch nnder strain at elastic limit do... .001825 KeductioB' in diameter at point of rupture - do . . . . 134 Beduction in area after rupture, per centum of original section 41. 9 Position of rupture at middle of stem Character of hroken surface ailky, interspersed with granular metal at the circumference Slapgation of inch sections ".10, ".22*, ".26*, ".12 12-INCH B. L, RIFLED MOETARS. 12-INCH B. I. MORTAR, NO. 15. Hoop Ag, 417 No. 4268. Marks, i2M^E^5A3 Diameter, ".564. Sectional area, .25 square inch. Gauged length, 4". Applied loads. BloDsation per inch. Sacce8.«ve elongation per inch. Permanent set. Successive permanent set. Remarlts. Total. Per square incQ. Poirnds. 260 1,200 2, 5B0 5,000 7,500 ' 10, OOO 11, 250 12, 500 12, 750 13, 000 13, 250 . 13, 500 13, 750 U, 000 14, 260 14,500 14, 760 15,000 15,250 , 15,500 15, 750 16, 000 16,260 16, 600 17,000 17,500 18, 000 18,500 28, 120 'Pounds. 1,000 6,000 10,000 20, 000 30, 000 40, 000 45, 000 50, 000 61,000 52, 000 53, 000 54, 000 55, 000 56, 000 67, 000 58, 000 59, 000 60, 000 61,000 62, 000 63,000 64,000 65, 000 66, 000 68, 000 70, 000 72, 000 74, 000 112,480 ' Inch. 0. ,.000125 .000300 .000660 .000950 .001275 . 001450 . 001625 . 001650 . 001700 .001750 . 001776 .001825 . 001875 . 001900 . 001950 .001975 . 002026 .002050 . 002075 .002125 . 002250 .002325 . 002450 . 003050 . 004775 .006700 . 008450 Inch. 0. . 000126 . 000175 . 000350 .000300 . 000325 . 000175 .000176 .000025 .000050 . 000050 . 000025 . 000060 . 00005C . 000025 .000050 . 000025 . 000050 . 000025 . 000025 . 000050 , 000125 . 000075 . 000125 .000600 . 001725 .001925 .001750 Inch. 0. 0. Inch. 0. Initialload. Elastic limit. Tensile strength. 6. 0. ^ •' General summary. Tensile strength per square Inch of original section '. pounds. . 112, 480 Elastic limit per square inch of original section do. . . 03, UOO Elongation per inch after rupture inch.. .1475 Elongation per inch under strain at elastic limit do... .002125 Beduction in diameter at point of rupture do... . 104 Keduction in area after rupture, per centum of original section 33. 5 Position of ruptnre 1".25 from neck Character of broken surface granular, silky center Elongation of inch sections ".16, ".22, ".12, ".09 H. Ex. 165 27 418 12-IKCH B. L. RIFLED MOETAKS. Boop Bi. •No. 4262. Diameter, ".564. Sectional area, .25 square inch. Gauged length, 4". Applied loads. Total. Founds. ■ISO 1,250 2,500 5.000 7,500 1 (1, 000- 11.2.10 12, 500 12, 750 13, 000 13, 250 13, 500 13, 750 14, 000 14, 2.)0 14, 600 II, 750 ;.■), COO 15,250 1,5, 500 15, 750 16, 000 10, 500 17, 000 17, 500 18, 000 18,600 20, 2C0 Per square iuuh. Founds, 1,000 5,000 10, 000 20, 000 30, 000 40, 000 45, 000 50, 000 61,000 6.', 000 53, 000 54, 000 55, 000 50, 000 57, 000 58, 000 59, 000 CO, OUO 61, 000 63, ono 63, 000 64, 000 66, 000 08, 000 70, 000 72, (lOO 74, 000 105, 100 Elongation per inch. Inch. 0. . 000125 . 000350 . 000650 . 000950 . 001275 .U0I450 . 001C25 . 001660 . 001675 .001700 . 001750 . 001775 .001825 . 001850 . 001900 .0019,50 . 002000 .002050 , 002275 . 002576 . .003625 . 005750 . 007575 .000125 .011000 .013000 Successive elongation per inch. Inch. D. . 000125 . 000225 . 000300 . 000300 . 000325 .000175 . 000175 . 000025 . 000025 .000025 . 000050 . 000025 . OODOoO . 000026 . 000050 . 000050 . 000050 . 000050 . 000225 . 000300 .001050 .002125 . 001825 . 001550 .001875 . 002000 Permanent sot. Inch. 0. 0. Successive permanent set. Inch. Kemarks. Initial load. Elastic limit. Tensile strcngtll. General summary . Tensile strength per square incli of original section pounds.. 105,160 Elastic limit per square incli of original section do... 61,000 Elongation par inch after rupture , inch-. . 1750 Elongation per inch under strain at elastic limit do... .002050 Reduction in diameter at point of rupture do... .154 Keduction in area after rapture, per centum of oiiginal section 47. 2 I'ositionofruptuie .' 1".30 from neck Character of broken surface , silky Slougatloa of inch sections ".25*, ".23,'''J3 ".10' 12-INCH B. L. RIFLED MORTAKS. 12-INCH B. I, MORTAR, NO. 16. Hoop A4. No. 4265. 419 Marks, '^m^^"^* Diameter, ''.564. Sectional area, .25 square inch. Gauged length, 4". Applied loads. Snooesslve eloi]j*atiOQ per inch. Permanent set. Succfessire permanent set. Remarks. Total. ■ Per squaie inch. per inch. Pounds. 250 1,250 2,500 5,000 7,500 10, 000 11, 260 12,500 12, 750 13; 000 13, 260 13, 500 13, 760 14,000 14, 250 14, 600 14, 750 16, 000 16, 250 15,500 16, 000 16, 500 17,,000 17, 500 18, 000 28, 120 Pounds. 17000 5,000 10, 000 20,000 30, 000 40, 000 46, 000 60, 000 61,000 62,000 63,000 64,000 55, 000 56, 000 67, 000 58, 000 59,000 60, 000 61, 000 62, 000 64, 000 66, 000 68, 000 70, 000 72,000 , 112, 480 Inch. 0. .000076 . 000250 .000526 . 000925 . 001225 .001425 . 001600 . 001650 . 001700 .001725 . 001760 . 001800 .001825 . 001876 .001926 . 001976 .002075 . 002200 .002426 . 002950 . 004000 .006600 .007125' . 008760 Inch. 0. . 000076 . 000176 .000275 .000400 . 000300 .000200 .000175 . 000050 . 000050 . 000025 .000025 . 000050 .000025 . 000050 . 000050 . 000050 .000100 . 000125 . 000225 .000525 . 001060 .001600 . 001625.- .001625 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. < Tensile strength. 0. 0. General summary. Tensile strength per square inch of original sec^tion .poonds.. ,112, 480 Xlasticlimit per square inch of original Section.... y do..' 59,000 Elongation per incli after rupture , r-.inch.. .1600 Elongation per inch under strain at elastic limit do... .001975 Eeduotion in diameter at point of rupture t... do... .084 Beductlon in area after rupture, per centum of original section 27. 6 Position of rupture , 1".40 from neck Character of broken surface granular, silky center -Elongation of inch sections ,..".17, ".22*, ".15*, ".10 420 12-inch b. l, eifled mortaes. Hoop Bi. No. 4266. Marks, 12 MK.6B. Diameter, ".564. Sectional area, .25 square inch. Gauged length, 4". Applied loads. Total. Per square inch. " Founds. Pounds. 250 1,000 1,250 5,000 2,500 10, 000 5,000 20,000 7,500 30, 000 10,000 40, 000 ' 11, 250 45, 000 12, 500 50, 000 12, 760 51, 000 13, 000 62, 000 13,250 53, 000 13, 500 54,000 13,760 55, 000 14, 000 '60, COO 14,260 57, 000 14, 750 59, 000 15, 250 61,000 15,750 63, 000 16, 260 65, 000 16, 760 67, 000 26,170 104, 680 Elongation per incli. Snccessive elongation per inch. Permanent set. *! Successive permanent set. Bemai'lfs, iTich. 0. . 000100 . 000325 . 000700 . 001026 . 001350 . 001550 . 001725 .001750 . 001776 . 001825 . 001875 . 001975 .002100 . 002250 . 002576 . 003750 . 005300 . 006875 . 008375 Inch. 0. . 0001(10 . 000225 . 000375 . 00032.) . 000325 . 000200 . 000175 . 000025 . 000025 . 000050 . 000050 . 000100 . 000125 .000150 . 000326 .001176 . 001550 . 001575 . 001600 Inch. Initial load. . 000026 . 000025 Elastic limit. Tensile strength. General summary. Tensile strength per square inch of original section pounds.. 104,680 ^Elastic limit per square inch of original section do... 64,000 Elongation per inch after rupture — ^ inch.. 1725 Elongation per inch under strain at elastic limit do... .001875 Eeduction in diameter at point of rupture do... .124 Heduction in area after rupture, per centum of original section 39, 2 Position of rupture 2". 25 from neck Character of broken surface granular at circumference; silky center Elongation of inch sections , , "10, ".21*, ".29*, ",09 12-INCH B. L. EIFLED MORTAKS. 12INCH B. L. MORTAR, NO. 17. Hoop A4. No. 426D. 421 Marks, "'^f^'^' Diameter, ".564, Sectional area, .25 square inch. Gauged length, 4". Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. Successive permanent tet. iiemarks. Total. Per square inch. Founds. 250 1,250 2,600 5,000 7,500 10, 000 11,250 12, 500 12, 750 13, 000 13, 260 13, 500 13, 760 14, 000 14, 250 14, 500 M,7S0 15, 000 15, 250 15,500 16, 750 16,000 16, 600 17, 000 17, 500 18, 000 18, 500 27,490 Founds. 1,000 5,000 10, 000 , 20, 000 30, 000 40, 000 45,000 60,000 51, 000 .62,000 53, 000 54,000 65, 000 56,000 67, 000 58, 000 69, 000 60,000 61,000 62, 000 63, 000 64, 000 66, 000 88, 000 ~ 70, 000 72,000 74, 000 109,960 Xneh. 0. . 000075 .000300 .000625 . 001000 .001300 .001460 . 001625 . 001700 .001725 .001775 . 001800 . 001826 .001860 . 001875 ■ .001975 . 002000 . 002025 .002050 . 002150 . 002275 . 002525 .003725 .005325 . 007150 .008775 .010276 Inch. 0. .000075 . 000225 .000325 . 000375 .0003C0 . 000150 .000175 . 000075 .000025 . 000050 . 000025 . 000025 . 000025 . 000025 . 000100 . 000025 . 000025 .000025 . 000100 .000125 . 000250 .001200 .001600 . 001825 . 001625 .001500 Inch. 0. 0. Inch. 0. Tnitm! Irfad. Elastic- limit. Tensile sljengtb. . 0000:5 . 000025 .000025 0. '■ General summary* Tensile strength per square incli of original section pounds . . 109, 960 Elastic limit per square inch of original section -. do... 61,000 Elongation per inch after rupture -. inch.. .155 Elongation per inch under strain at elastic limit .• do... .002050 deduction in diameterat point of rupture ,r--do... .124 Beduction in area after rupture, per ceuium of original section , , . _ 39. 2 Position of rupture ...J - ,, 7..2" from nec^ Character of broken surface. , silky Elongation of inch sections ".08, ".13, ".30*. ".U 422 12-INCH B. L. EIPLED MORTARS. Hoop Bi. Ko. 42(14. Marks, i^^f^'^i Diameter, ".564. Sectional area, .25 square inch. Gauged length, 4". Applied loads. Elongation per inch. Successive elongation. per incli. Permanent set. Successive permanent set. Remarks. Total. Per square Inch. Pounds. 260 1,250 2,500 5,000 7,500 10, 000 11, 250 12, 600 12, 750 13, 000 13, 260 13, 500 13, 750 14, 000 14, 260 14, 600 14, 750 15,000 15, 260 15, 600 15, 7,50 10, 000 16, 500 17, 000 17, BOO 18, 000 18.600 27, 360 Pounds. 1,000 5,000 10, 000 20, 000 SO- 000 40, 000 45, 000 60, 000 51, 000 52,000' 53, 000 54, 000 55, 000 56, 000 57, 000 58, 000 59, 000 60, 000 61, 000 62, 000 63, 000 64,000 66, 000 68, 000' 70, 000 72, 000 74, 000 109,440 Inch. 0. . 000075 . 000300 . 000550 .000875 .001250 . 001400 . 001575 . 001600 . 001625 . 001650 . 001700 . 001750 . 001775 . 001800 .001850 .001875 . 001925 . 002000 .002125 . 003325 .002760 . 004000 . 005500 . 007300 . 008825 . 010475 Inch. 0. .000075 .000225 . 000250 . 000325 . 000375 . 000150 . 000175 . 000025 . 000025 .000025 . 000050 . 000050 .000025 . . 000025 .000050 . 000025 . 000050 . 000075 . 000125 . OOU200 . 000425 .001250 .001500 .001800 . 001515 . 001660 Inch. 0. 0. Inch. 0. Initial lo.ld. Ehistio limit. Tensile strength. 0. 0. General summary. Tensile strength, per square incTi- of original section ponnds-. 109,440 Elastic limit per square inch of original section., r. do.!. 61,000 Elongation per inch after rupture .'. inch.. . 1550 Elongation per inch under strain at elasticlimit do... .002000 Eeductionin diameter at point of rupture do... . 104 Eeduction in area after rupture, per cei^tum of original section 33.5' Position of rupture 1''.35 from neck Character of broken surface granular; silky, eccentric spot Elongation of inch sections ".09, ".12, "24*, ".17 12-INCH B. h. MORTAES. 12-INCH B. L. MORTAR, NO. 18. Hoop Bi. No. 4267. 423 Diameter, ".564. Sectional area, .25 square inch. Gauged length, 4". Applied loads. Elongation per inch. Saccessivo elongation per inch. Permanent set. Successive permanent set. Remarks. Total. Per square Inch. Poitnds. 250 1, 2.50 2,500 6,000 7,500 10, 000 11,250 12, 500 12, 750 13, 000 13, 2.50 13, 500 13; 750 14, 000 14, 260 14, 600 14, 750 16,000 » 16,250 15, 500 15, 760 16, 000 ■ 10,260 10, 760 17, 250 17,7.50 18, 260 •18,750 27, 780 Founds. 1,000 5,000 10,000 20, 000 30, 000 40, 0(10 45, 000 50, 000 51, 000 52, 000 53, 000 64, 000 65,000 60, 000 57, 000 58, 000 59, 000 00, 000 61,000 62, 000 63, 000 04. 000 65, 000 07, 000 69, 000 71,000 73, 000 75, 000 111, 120 Inch. 0. . 000125 .000305 . 000700 .001025 .001425 .001600 .001760 . 001775 . 001800 . 001825 . 001875 . 001925 . 001975 . 003000 . 002050 .002100 . 002160 . 002200 . 003260 . 002400 . 002300 . 002700 .003,300 . 005500 . 007460 . 008823 . 010700 Inch. 0. . 000125 .000260 .000325 .001325 . 000400 .000175 . 000150 . 000025 . 000025 . 000026 . 000050 .000050 . 000060 . 000025 . 000050 .000050 . 000050 . 000050 .000050 .000150 . 000100 . 000200 . 000800 . 002000 . 001950 . 001375 .001875 Inch, 0. 0. Inch. 0. Initial load. Elastic limit. 0. 0. ■» - 1 ' ," Tensile strength. General summary. Tensile strength per square inch of original section pounds.. 111,120 Erastic limit per square inch of original section do... 62,000 Elongation per inch after rnpture inch.. .1525 Elongation per inch under strain at elastic limit do... .002260 Eednotionitt diameter at point of rupture i do... .104 Seduction in area after rupture, per centum of origin.il section 33.5 Position of rupture , 1" from neck Character of broken surface grannlar; silky center Elongation of inch f-ections ".24*, ".16, ".11, ".10 424 12-INCH B L. EIFLED MORTARS. Specific gravity and hardness of cast-iron bodies and steol hoops. (No tension tests of these specimens.) CAST-IRON BODIES. No. of mor- tar. Marka od specimon. Specific gravity. Hard. ness. Eemarks. 2 3 3 3 3 3 3 3 3 4 4 4 4 4 4 4 4 5 5 5 5 5 S 5 5 5 6 6 6 6 6 7 7 7 7 7 7 7 7 ' 8 8 8 8 8 8 8 8 8 9 ]2MCiTE2BT,I 12MC,TE2BT3l 12MC, TKjBTjM 12MC, TE, BT, 7.2499 7.2.525 7.24P7. 7. 2508 7.2.539 7. 2384 7.2570 7.2424 7. 23.52 . 7. 2268 7. 2478 7. 2456 7.2473 7.2359 7. 2.586 7.2.566 7. 2C29 7. 2504 7. 2701 7. 2677 7.2686 7. 2733 7. 2431 7. 2462 7.2424 7. S505 7.2400 7. 2511 7. 2491 7. 2492 7.2.581 7. 2077 7. 2027 7. 2090 7. 2068 C 7. 2075 ) 7. 26S1 7. 2077 7. 2092 7.2060 7. 2003 7.2703 7.9610 7. 27S0 7. 2697 7.2713 7. 2703 7. 2761 7.2730 7. 2002 7.2774 . 7. 27S1 7. 2814 7.2350 7. 2823 7. 2776 7. 2801 7. 2805 7.2030 7. 2803 7. 2790 7. 2S92 7. 27u0 7. 2861 7.2905 7. 2908 7.2973 15.43 15. 20 14.76 15.83 14.98 15.75 16.90 15.83 15.20 13. 72 15. ,59 15.51 15.13 16.23 16.99 17.99 10.90 10.50 17.08 10.31 16. 07 16.90 20.14 19.30 18. 78. 18.78 15.91 16.64 15.75 15.59 18.09 19.29 18.48 18.28 17.17 16.56 16.99 16.47 17.17 15.59 17.09 19.71 18. 38 18.08 17.26 10.07 16.73 16.31 10.73 17.99 .20. 03 18.10 19.18 14.47 17.44 1.5.50 16.65 17.44 17.26 17. fl 16.48 16.04 1.5.83 10.23 16. 82 16.99 20.47 * J2MC, T-RshLsI 12MC,TE3BL,0 12MC,TE3BL8M 12MEiTEiMT, 12ME, TE, MT3I 12 ME, TE, itTiO 12ME, TR^BTsI 12ME, TEjBTiG 12MEiTEjBLgM 12MEjTE2BLs I2ME3TE, MT3T 12ME3TE, MT4O 12ME3TE, MTs M 12 M R3 T E, R T, I2ME3TR2RTBM I2ME3TE5BL6I I2ME3TE2BL, I2ME3TRJBL8M 13M Ej TE, M T, . 12ME4TE,MT,I I2ME1TR, ^r T4O I2ME4TR, MTsM 12 11 R4 T E, B T2 12ME4TR2BLSI I2MR4TE2RT., I2ME4TE2BL8M 12MEsTR, MT, 12MEjTE,MT3l 12MEsTE, MT4O 12MRsTE, MTs M 12ME5TE2BT2. .. KMEjTIijBTsM 12ME5TE2BL6I 12MEsTEjBL70 12MEsTE2BLsM 12ME6TE,MTi 12MEbT K1MT3I I2MRSTE1MT4O 12 M Es-T El M Ts M 12ME6TE,BT2 I2MEJTR2BT4O r^MEsTEjBLsI 12ME6TE2BL,0 I2MECTE2BL8M 12ME,TEiMT, 12ME, TE1MT3I 12ME, TE1MT4O 12ME,TEiMTsM 12M R7TE2B To 12MR,TE2BL6l 12MR7TE2BL,0. ....... 12ME,TE2BL8M 12ME8TE,MT3l I2MESTE1MT4O 12ME8TE, MTsM I2MB8TR2BT3I I2ME8TE2BT3IX 12MR8T lijBTiO WMEgTEjBLsI 12MEgTK2BL70 12MEsTE2BLbM 12ME9TE,MT3l 12-INCH B. L. RIFLED MOETAKS. 425 CAST-IBON BODI£S~Contmued. No. of mor- tar.- Harks on apecimon. Specillo gravity. Hardness. Eemarks. 9 laMEsTK.MTjO 7.2831 18.68 9 ISMRsTR, MTsM 7. 3000 20.59 9 12MK9TR,BTaI 7. 2909 16.73 9 12M lis T Ej B T4 7. 2829 16.07 9 12MR8TKjBTiiM 7.2886 15.28 9 12MK9TK2BL|iI 7. 2902 16.56 9 12M]!,TEjBL,0 7.2895 16.73 9 I2MESTE2BL8M 7. 2874 15.75 10 12 M Kio T Ei M T3 1 7.2648 19.81 • 10 l2ME,„TEiMTiO 7.2820 18.58 10 12ME,„TE,MT5M 7. 2896 19.18 10 12ME,„TEjBLsI 7. 2848 16.07 10 12MKioIEjBL,0 7. 2855 16.15 10 12 M E,„ T I!j B Lg M ...... 7.2865 16.07 11 12ME„TE,BL5l 7. 3192 14.64 11 12MR„TE^BL, 7. 3119 14.40 11 12ME„XIl,BL,x 7.3167 16.07 TTpper end. 11 12ME„TR2BL, XX 7. 3185 15.83 Lower end. 11 12 ME,, TE^BLjM 7. 3224 14.69 STEEL HOOPS. 2 4 4 5 5 6 6 7 , 7 8 9 9 10 11 ....... 13 12ME2BsEbM 7. 8460 7. 8373 7. 8441 7 8459 7. 8477 7.8433 7.8454 7.842S 7.8439 7.8445 7.8398 7.8386 7.8453 7. 8416 7.8436 7.8424 7.8457 23.70 23.70 22.39 21.89 19. 39 23.43 25.73 22.77 24.26 23.03 23.43 22.39 23. 0.1 21.20 32.02 22.64 22.01 12 M E4 A3 El M 12M R4B.E5M 12 M Es Ai E4 M . 12ME= BbE«M 12M11, A4E4 M 12M K6B4ESM 12ME, A.BiM 12M:E,BsE5M I2ME11B, EoM 12ME9 A0R4M 12ME<,B,EsSI 12MKinBiEs M 12ME,,A4E4M 12ME,iB8,Ks M 12 M E,2 A4E4 M 12 M E,a A« El M 426 12-INCH B. L. EIFLED MORTARS. o O O o o a a U -J u ^ _ (U o "SCO — < rt « S ^ ■ « CO "■5 " ■9° a o 3 - - = S-a ci 5 - s 15 a p p t>>p53 * >>Pi"!2 s * ia J^n &p?^ I ' f^ ^4 i^ f-H tn ' ' ' ^"^ ^ ' ^ ' h ^"^ p4 ^"^ ^^ '^ <:a i:] c^ 9 S o s tXT3 S +3 g^s f O 03 O c 5 a a ff t ' ^ ^^ -^ ^ p.® tO(0^^^(Ot>mO-4'~'Tl•|-^r-^^il-^^^C05DMCOCOCO(DT3icO^HTl*ojt-^T^^cjt^I^^ g :n3 X M 5*1 m CM CO.cra (NlM^lW^COC-lMCOMOacOi-ti— iM'iifM-<»iTllCMM(N(NlM(M(NcracQ^ "SomoocoajioeoooocoeocccoooooioMMcococoioeoomooortoooooocooioooo -jooooooooooooooooooooogaoooooooooooooooo 2-*^iO-?j'ao-i rH iH H f-« r-l r- rH i-l i-lrH ,-( i-H-l i-i i-t rH iH .-( i-( II S a b- 13 « £ f a £0 jj 2 © Ed J m Soooooooooooocooooooosooooooooooocsoooooo o te a fl ■2 a ea 3 o S ® a- M so PliCa^w^.td^.IIlI'lilllEa^IIIIIi^a:;" ^ !wcq feii^L^.^ddd^i^Si.ooodoodoPHi^i^ood'-od'^ a p p.pip-aci.p,« « BaPP®PPPOT(n ■^ a a a_ a_ s a a a_'^ ^^ a_ a s •^ a a_^- pao.D.Q.ftp.p.p.pos'p.p.p.aap.u rjoooooocopfflfflOooaoowj .6t-t~00Q00CQoO^OSOS - s|gg§i8|gi -^-saaaassaa u p,ap,o,ap.oio,p. mooooooooo icaooooooooo cofocoMmcocgMCoeococociaMcocomcoeoerscQTOCQcoerscracococQTO-^'^jirji-^'^'^^-i.'.il 12-INClI B, L. RIFLED MOETAKS. 427 Ti S S a n ^ p) ce ca I . ^ 2 B 00 V MM '33 ■^ a> ^ m a» e^m caacqau3C4coc4C4ustA ocooocoooeoaQAcoioooiOomnmco oooooooooooooooooo oooooooooooooooooo oooooooooooooooooo 0*5 "S-O o o o « tJ •« -o 'S o o P P P o 13 f^ *- "0 13 'O "O 35 jzi !zi |zi 12; !2i la |zi !2! |2i !2! i2i fzi ^ jzi jz; 1?; ;?! ©oooSgogogogoOoSoo •< <] pq . 00408 . 00434 . 00168 . 00510 . 00583 . 00790 . 01470 .031 .037 .043 .053 .068 .092 .120 Inch. 0. . 00058 . 000R3 . 00040 .00011 . OOlllO . 00004 . 00006 . 00006 . 00008 .00009 . 00008 . 00007 .00013 . 00010 .00007 .00008 . 00017 .00010 . 00011 .00017 .00015 .00019 . OOO-iO . 00026 . 00034 .00042 . 00073 . 00207 . 00680 .0163 .006 .006 .010 .016 .024 .028 Inch. 0. Jnch. 0. Initial load. ELastic limit. Tensile strength. General summary. Tensile strengtli per square iDch of original- section pounds 100 2G0 Elasticlimit per square inch of original section ^. '.'.'.[.'.'.... do '" ce'oOO Elongation per inch after rapture '.'"////".",.,'.'.' 'iiich' o' 142 Elnhgationperinch.under strain at elastic limit '"'.''..".'.'.'', do * 00^31 Kerluction in diameter at point of rupture ,'...'. do" " ' "or*i Kednctionin area after rupture, per centum of original section 50 3 S^2f;>?^f^avurtic;::::::::::::::::::::::;:;::::::::::::;;:;::;:!^! SQUARE AND F^AT STEEL WIRE. No. 3841. Sample 5. 435 Diameter, ".218. Sectional area, .037 square inch.' Gauged length, 10". Applied loads. SuoceBsive Permanent , Bet. Successive permanent set. Hemarks. Total. Per square, inch. ' -"- ^-f- Pounds. 185 740 1,480 1,850 1,887 1,924 1,961 1,998 2,035 2,072 2,109 2,146 2,183 2,220 2,257 2,294 2,331 2,368 2,405 2,442 2,479 2,616 2,590 2,/38 2,880 3,034 3,182 3,330 3,478 3, 626 3;ioo 3,774 3,848' 3,923 3,996 4,070 Founds. 5,000 20, 000 40,000 '50,000 61, 000 52, 000 63, 000 64, 000 55,000 56, 000 57, 000 58, 000 69, OOO 60, 000 01, 000 62, 000 63,000 64, 000 65, 000 66, 000 67, 000 68, 000 70, 000 74, 000 78, 000 82, 000 86, 000 90,000 94, 000 98, OOO 100, OOO 102, 000 104,000 106, 000 108, 000 110, OOO Inch. 0. . 00069 .00177 . 00283 . 00206 .00310 . 00330 . 00342 .00355 .00398 . 00428 .00478 . 00510 . 00576 .00618 .00680 . 0077O . 00830 . 00S95 . 00947 .01013 . 01085 .013 .018 .020 .023 ,027 .030 .036 .042 .048 .053 .056 .064 .075 Inch. 0. . 00069 . 00108 . 00106 .00013 .00014 . 00020 .00012 . 00013 . 00043 . 00030 .00050 . 00032 . 00066 . 00042 . 00062 . 00090 . 00060 . 00065 . 00052 .00066 . 00072 .00215 .005 .002 .003 .004 .003 .006 .006- .006 .005 .003 .008 .011 Inch. 0. Inch. 0. Initial load. Elastic limit. f - Tensile strength. '' 1 General summary. Tensile strength per square iBch of original section pounds.. 110,000 Masticlirait per square inch of original section do... 65,000 Elongation per inch after rupture inch.. i082 Elongation per inch under strain at elastic limit do... .00355 Eeduction in diameter at point of rupture , do... .033 Eeduotion in area after lupture, per centum of original section , 27.3 Position of rupture at end of gauged section. Cbai'ftcler of broken surface , granular, 60 per cent. ; silky, 40 per cent. 436 Diameter, ".212. Sectional area, .035 square iuch. Gauged length, 10". SQUARE AND FLAT STEEL WIKE. No. 3842. Sample 6. Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. SuccessiTe permanent set. Kemarks. Total. Per square inch. Pounds. 185 700 1,400 1, 760- 1,785 1, S'-'O 1,855 1,890 1,925 1,960 1,995 2,030 2,065 2,100 2,135 2,170 2, 205 2, 240 2,275 2,310 2,345 2,380 2,415 2,450 2,485 2,520 2,565 2,590 2,730 2,870 3,010 3,150 3,290 3,430 3,603 3, .570 3, 640 3,7lir 3,780 3,850 Pounds. .5, 000 20, 000 40, 000 60, 000 51, 000 52, 000 63, 000 64, COO 65, 000 66, OOQ 57, 000 68, 000 69, 000 60, 000 61, 000 62, 000 63, OOO 64, 000 66, 000 66, 000 67, 000 68, 000 69, 000 70, 000 71, 000 72, 000 73, 000 74, 000 78, 000 82, 000 86, 000 90, 000 94, 000 08, 000 100, 000 102, 000 104, 000 106, 000 108, 000 110, 000 Inch. 0. . 00059 .00139 .00205 .00210 .00217 .00223 . 00230 . 00240 . 00260 .00260 . 0,1266 .00278 . 00290 . 00302 .00312 . 00329 .00360 . 00363 .00380 .00410 . 00444 . 00482 . 00527 . 0D565 . 00646 . 00708 .010 .023 .025 .030 .034 .041 .047 .052 .057 .062 .072 .083 Inch. 0. . 00059 . 00080 . 00066 . 00005 . 00007 . 00006 . 00007 . 00010 .00010 .00010 . 00006 . 00012 . 00012 .00012 . 00010 .00017 . 00021 .000:3 . 00017 . 00030 . 00034 . 00038 . 0004S . 00038 • .00081 . 00122 . 00232 .013 .002 .005 .004 .007 .000 .005 .005 .005 .010 .011 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. i General summary. Tensile strength per square inch of original section pounds 110 ooo Elastic limit per square inch of original section ' rln ' «b' nnn Elongation per inoTi after rupture .' inch"' nw Elongation per inch under strain at elastic limit /i„ " anigi Eeduction in diameter at point of rupture !""""" do n?2 Kednction in area after rupture, per centum of original section io r SQUAEB AND FLAT STEEL WIKE. No. 3843. Sample 7. 437 Diameter, ".218.- Sectional atea, .037 square inch. Gauged lengtb, 10". Applif Total. d loads. Per Bqtiaro inch. Elonsntion per inch. SuooesaiTe elongation per inch. Permanent sot. Successive permanent set. Eemarks. Pounds. 185 740 1,«0 1,860 2,220 2,257 2,294 2,331 2,368 2,405 2,442" 2,479 2,516 2,S53 2,-590 2,627 2,664 2,701 2,738 2,775 2, 812 2,886 2,960 3,108 3,256 3,404 3,552 3,700 3,816 • Founds. 5,000 20,000 40, 000 60, 000 60, 000 61', 000 02. 000 63,000 04, 000 65, 000 66, 000 67, 000 08, 000 69, 000 70, 000 71,000 72, 000 73, 000 74,000 75,000 76, 000 78, OOfr 80,000 84,000 88, 000 92. 000 96, 000 ■ 100, 000 103, 140 Inch. 0. . 00006 .00142 . 00190 .00248 . 00258 . O0269 . 00278 . 00288 . 00298 . 00310 . 00321 . 00332 . 00360 . 00371 .00388 . 00407 . 00438 . . 00468 .00511 . 00680 .01420 .034 .041 .048 .068 .069 .089 Inch. 0. • .,00006 .00076 . 00048 . 00058 .00010 - . OOOll . 00009 . 00010 .00010 . 00012 .00311 . 00011 .00018 . 00021 . 00017 . 00019 . 00031 . 00020 . 00043 . 00069 .00840 .0198 .007 ' .007 .010 .011 .020 Inch. 0. Inch. 0. Initial load. • Elastic limit. Tensile strength. , General summary. Teneile Htrengtl] per Hqnare inch of original section pounds-. 103,140 Elastic limit per square inch of original section do... 68,000 Elongation per inch alter rupture inch.. .124 Elongation per incli under strain at elastic limit ...do-.. .00382 Kcdnction io diameter at point of rupture do... .068 Kednction in area after rupture, per centum of original section ^ 52, 2 Position of rupture... 2".70 outside the gauged section Character of broken surface fine silky 438 SQUARE AND FLAT STEEL VVIEE. No. 3844. Sample 8, Diameter, ".225. Sectional area, .039 square inch. Gauged length, 10". Applibd loads. Successive elongation per inch. Permanent set. Saccessive permanent set. Eemarks. Total. -Per actuaTe inok per inch. Pounds. 195 780 1,660 1,950 2,,340 2,379 2,418 2,457 2,496 2, 535 2,574 2, 013 2, 652 2,691 2,730 2,886 3,042 3,198 3, 354 3,510 3,666 3,822 3,900 '■ . 3, 978 . 4,056 I'otmdt. ' 5. 000 20; 000 40, 000 50, 000 60, 000 61,000 62, 000 63, 000 64, 000 85, 000 66, 000 67, 000 6», 000 63, 000 70, 000 74, 000 78, 000 82, 000 86, 000 90, 000 94, 000 98, 000 100, 000 102, 000 104,000 Inch. 0. . 00061 . 00153 . 00217 .00323 • . 00336 . 00362 . 00377 . 00405 . 00448 . 00482 . 00560 . 00603 . 00767 . 01085 .021 .027 .031 .037 .042 .052 .067 .075 .090 .140 , IJich. 0. . 00061 .00092 .00064 .00100 .00013 .00026 . 00015 . 00028 ~ .000)3 .00034 . 00078 .00043 .00164 .00318 .01015 .006 .001 .006 .005 .010 .015 .008 .015 .050 Inch. 0. Inch. 0. Initialload. ' Elastic limit. Tensile strength. ' General summary. Tensile strength per square inch of original section . pounds. . 104,000 Elastic limit per square inch of original section do .. 63,000 Elongation per inch after rupture inch.. . 143 Elongation pet- inch under strain at elastic limit do. .. . 00377 Keduction in diameter at point of rupture do... .055 Kednctionin area after rupture, per centum of original section 41,8 Position of rupture ".25 inside the guaged length Character of broken surface ., fine silky SQUARE AND PLAT STEEL WIRE. No. 3845. Sample 9. 439 Diameter, ".217. Sectional area, .037 square inch. Ganged length, 10". Applied loads. Elongation per inch. Snccesaive elongation per inch. Permanent set. Snocessive permanent set. Remarks. Total. Per square inch. Pounds, 185 740 1,480 1,850 2,220 2, 257 2,294 2,331 2,368 2,405 2,442 2,479 2,616 2,553 2,590 2,738 2,880 3,034 3,182 3,330 3,478 3,626 3,700 3,774 . 3,848 3,897 Founds. 5,000 20, 000 40, 000 50, 000 60, 000 61,000 62, 000 63, 000 64,000 66,000 66,000 67,000 68, OOO 69, 000 70, 000 '74,000 ■ 78, 000 82,000 86, 000 90,000 94, 000 98, 000 100, 000 102, 000 104, OOO 106, 320 Inch. 0. . 00065 .00157 . 002?5 .00324 . 00331 . 00341 . 003.?9 . 00379 . 00403 . 00435 .00403 . .00613 . 00677 . 00814 .021 .026 .031 .036 .041 .049 .062 .070 .082 .099 Inch. 0. . 00065 . 00092 . 00068 . 00099 . 00007 .00010 .00018 . 00020 .00024 . 01)032 . 00028 .00060. . 0C064 : 00237 .di28e .006 .005 .005 .005 .COS .013 .008 .012 .017 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength, General summary. Tensile strength per sqnare inch of original section pounds.. 105,320 Elasticlimit per square inch of original section do... 62,000 Elongation per inch after rupture •. inch.. ^.130 Elongation per inch under strain at elasticlimit do... .00341 Reduction in diameter at point of rapture do... .047 Reduction in area after rupture, per centum of original section 38. 7 Position of rupture '. , at middle of length Character of broken surface fine silky 440 SQUARE AND FLAT STEEL WIRE. N"o. 3846, Sample 10. Diaraeter, ".218. Sectfonal area, .037 square inch. Gauged leugtli, 10". Applied loads. Elongation per JDcla. Succes.'iive elongation per inch. Permanent set. Successive permanent set. Semarks. Total. Per square inoli. Founda. 185 740 1,480 ■ 1,850 ' 2,220 2,257 2,294 ' 2, 331 Pounds. 5, 000 20, OOp 40, 000 60, 000 60, 000 01, 000 62, 000 63 000 Inch. 0. . 00059 . 00139 .00182 . 00240 .00247 .00252 . 00200 . 00266 . C0272 . 00280 . 00288 . 00295 . 00306 . 00311 . 0C326 . 00333 .00343 .00354 . 00369 . 00387 .00401 . 00433 . 00461 . 00491 .00.561. . 00760 .024 .030 .034 .041 .043 .048 .053 .058 .073 .110 Inch. 0. . 00069 . 00080 . 00013 . 00058 . 00007 .00005 . 00008 . 00006 . 00006 . 00008 . 00008 . 00007 . 00011 . 00005 .00015 . 00007 .00010 .00011 .000)6 .00018 .00014 . 00032 . .00018 .00040 . 00070 . 00199 .0164 .006 .004 .007 .002 .005 .005 .005 .015 .037 Inch. 0. -Inch. 0. Initial load. 3j}lastic limit, approxi- mate. Tensile strength. \ 2, 368 fii! 000 2,405 2,442 2,479 2,516 2, 553 2,590 2,627 2, 604 2.701 2,738 _2,.776 2,812 2,849 2,886 2,923 2,060 2,997 3,034 3,182 - 3.330 3,478 3,626 3,700 8,774 3.848 3,922 4, 070 4,218 65, 000 66, 000 67, 000 68, 000 69, 000 70, 000 71,000 72, 000 73, 000 74, 000 76, 000 76, 000 77, 000 78, 000 79, 000 80, 000 81, 000 82, 000 86, 000 1 90, 000 94, 000 98, 000 100, 000 102. 000 104, 000 106, 000 110, 000 114, 000 General summary. Tensile atrengtli per square inch of original section pounds.. 114, 000 Elastic limit per square inch of original section (approximate) do... 74,000 Elongation per inch after rupture.. -i incli.. . 118 Elongation per inch under strain at elastic limit do... .00354 Reduction in diameter at point of rupture , do.'. . .048 Keduction in area after rupture, per centum of original section 38. 7 Position of rupture ^ ".1 outside the gauged section Chara cter of broken surface fine silky SQUARE AND FLAT STEEL WIRE. . 441 SAMPLES FROM ENDS OP COILS AFTER SECOND DRAWING. No. 3807. f Sample 1. SectioDal area, ".1496 x ."1503 = .022 square inch. Gauged leugtb, 10". Applied loads. Elongation, per ineh. Successive elongation per inch. Permanent set. Successive permanent set. Kemarks. Total. Per square inch. Founds. 110 410 880 1,320 1,430 1,540 I,G50 1, 7(i0 1,870 1,980 2, 090 2,200 2,245 Pounds. , 5, 000 : . 20, 000 ' 40,000 60,000 05,000 70, 000 76,000 80, 000 89, 000 90, 000 96,006 100, OCO 102, 010 ,^ Inch. * 0. .00075 . 00172 .00284 . . 00314 .00351 .00442 . 00506 .00601 . 00722 .01111 Inch. 0. .00075 .00097 . 00112 . 00030 . 00037 . 00041 .00050 . 00064 . 00095 .00121' . 00392 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. Genei'al summary. Tensile strength per square inch of original section ponnda., 102, 040 Elastic limit per square inch of origiual section do .. 70,000 Klongation per inch after rupture ,. inch.. .010 Elongation per inch under 8irain~at elustic limit _- k.do... .0035l\ Redaction in area alter rapture, per ceutum of original section'. - 54. 5 Position of rnptnre ; 5". 95 outside the ganged section Character of broken-surface fine silky 442 SQUARE AND FLAT STEEL WIEE. No. 3808. Sample 2. Sectional area, ".1515 x ".1513= 0229 square inch. Gauged leugtb, 10"- Aiiplied loads. Elongation per iueli. Successive elongation per inch. Permanetit set. Successive permanent set. Eemarks. Total. Per square iuch. Povnds. Ill 458 916 1,374 1,488 1,003 1,717 1,832 1, 046 2,U61 2,175 2,214 Pounds. 5,000 20, 000 40, OuO 60, 000 65, 000- 70, 000 75, 000 80, 000 85, 000 90, boo 95. 000 96, 680 Inch. 0. .00073 .00171 .00287 . 00323 . 00365 . 00422 . 00480 . 00683 . 00767 . 01417 Inch. 0. . 00073 . 000i)8 .00116 . 00036 .00013 . 00057 .00058 .00103 .00184 . 00650 Inch.' - 0. Inch. 0. Initial load. Elastic limit. Tensile strength. . General summary. Tensile atrengtli per square inch of original section pounds.. 96,680 Elastic limit per square inch of original section do... 65, 000 Elongation per inch after rupture inch.. .017 EloDgation per inch under strain at elastic limit do... . 00323 Reduction in area after rupture, per centum of orlgiual section 55. 9 Position of rupture 1".3 outside the gauged section Character of broken surface fine, silky Ko. 3809. Sample 3. Sectional area, ".1505x".1495=.0225 square inch. Gauged length, 10". Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. Successive permanent set. Kemarl^s. Total. Per square iuch. Pounds. 112 450 900 1,350 1,462 1,575 1,687 1,800 3,912 2,025 2,137 2,215 Pounds. 5,000 20, 000 '40, 000 60,000 65, 000 70, 000 75, 000 80, 000 85, 000 90, 000 95,000 98,440 Inch. 0. .00072 . 00166 .00278 . 00308 . 00343 . 00388 . 00441 .00521 .00637 .00908 Inch. 0. . 00072 . 00094 . 00112 . 00030 . 00035 . 00045 . 00053 .00C80 .00116 . 00271 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General summary. Tensile strength per square inch of original section pounds.. 98 440 Elastic limit per square inch of original section ^ do.!! 7o' 000 Elongation per inch after rupture "."!inch!! !oo6 Eloiigationper inch under strain at elastic limit y.".!!.'. .do.!! .00343 Reduction in area after rupture, per centum of original section „..'.". '". 55 q Position of rupture...... 5".4 outside the" gauged pection ■ Character of broken surface Tfine, sUky SQUARE AND FLAT STEEL WIRE. No. 3810. Sample 4. Sectional area, ".1515x".1514=.0229 square incli. Gauged length, 10". 443 Applied loads. , Elongation per inch. Snoco8.sivo plon (Ration per inch. Permanent sot. Successive permanent set. Bemarka. Total. Per square inch. Pounds. 114 458 916 1,374 1,488 1,603 1,717 1,832 1,946 2,061 . 2,175 2,290 2, 302 Pounds. 5,000 20, ma 40, 000 60, 000 65, 000 70, 000 75, 000 80, 000 85,000 90, 000 05, 000 100, 000 103, 140 Inch. 0. . 00008 .00148 . 00257 .00289 . 00318 . 0J354 .00402 . .00458' . 00544 . 0O71O , .009 Inch. 0. . 00068 . 00080 .00109 108032 .00029 . 00036 . 00048 .00056 i . 00086 . . 00166 .0019 Inch. 0. Inch. 0. Initialload. Blastio limit. Tensile strength. Genet*al summary. Tensile stroBfith per square inch of original section pouDcls.. 103, ]40 Elastic limit per square inch of Driginal section ^...do... 75,000 Elongation per inch afrer rupture inch.. .035 Elongation per inch under strain at elastic limit — do.-.' .00354 Keduction in area after rupture, per centum of original section 55.4 Position of rupture 2".25 inside the gauged section Character of broken surface fine silky No. 3811. Sample 5. Sectional area, ",1500 x". 1505=. 0225 square inch. Gauged length, 10". Applied loads. Kloigation perindh. Successive elongation per inch. Permanent set. Successive permanent set. Kemarks. Total. Pei- .square inch. Pounds. 112 450 .900 1,360 1,462 1,575 1,887 1,800 1,912 2,025 2,137 2,250 2,362 , 2,420 Pounds. 5, 000 20, 000 40, 000 60, 000 66, 000 - 70, 000 75, 000 80, 000 85, 000 90, 000 95, 000 100, 000 105,000 107, 560 Inch. 0. .00090 .00180 . 00288 . 00317 .00348 .00380 . 00420 .00467 .005-20 .00598 .00696 .00858 Inch, 0. .00090 .00090 .00108 . 00029 .00031 .00032 .50040 . 00047 . 00053 . 00078 . 00098 . 00162 Inch. 0. Inch. 0. Initial load. Elastic limit. / Tensile strength. General summary. Tensile strength per square inch of original section pounds . . 107, 560 Elastic, limit per aqnare inch of original section do . . . fiO, OdO EJdngation per inch afterrupture , inch.. .003 Elongation per inch under strain at elastic limit do... .00420 Beductionin area afterrupture, per centum of original section - 30.7 ^Position of rupture. 10".75 outside the gauged section Character of broken surface ,. fine silky 444 SQUAEE AND FLAT STEEL WIRE. No. 3812. Sample 6. Sectional area, ".1512 x ".1506 = .0228 square inch. Gauged length, 10". Applied loads. Elongation per inch. Successive elonpjiition per inch. Permanent set. Successive permanent set. Eemarks. Total. Per square inch. Pounds. 114 450 912 1,368 1,482 1,596 1,710 1,824 1,938 2,052 2,160 2,280 2,318 Pounds. 5,000 20, 000 40, 000 00, 000 65, 000 70, 000 75, 000 80, 000 85, 000 90, 000 95, 000 100,000 101, 670 Inch. 0. . 00068 .00166 . 00270 . 00294 , . 00340 . 00383 . 00432 . 00509 . O06O2 . 00820 .012 Inch. 0. . 00008 . 0009S . 00104 .00024 . 00046 . 000i3 . 00049 . 00077 .00093 .00218 .0038 Inch. 0. Inch. Initial load. Elastic limit. Tensile strength. V General summary. Tensile strength per square inch of original section J. pounds.. 101,670 Elastic limit per square inch of original section do. .. 05, 000 Elongation per inch after rupture : .- inch.. .017 Elongation per inch under strain at elastic limit do... . 00294 Jieductionin area after rupture, per centum of original section ' 56. 1 Position of rupture 3". 6 outside the gauged section Character of broken surface , fine, siUty There was a short twist in the wire at the place where rupture occurred. Sectional area, ".1505 x ".1503 Gauged length, 10". No. 2813. Sample 7. 0226 square inch. Applied loads. Elongation per inch. Snc(^essive elongation per inch. Permanent set. Successive permanent set. Keinarlis. Toial. Per square ' inch. Pounds. 113 452 904 ■ 1,356 1,409 1,582 1,695 1.808 1,921 2,034 2, 1,47 2,260 2, 373 2,422 Pounds. 5,000 20, 000 40, 000 60, 000 06,000 - 70, 000 75, 000 80, OOO 85, 000 90, 000 . 95,000 100, 000 105, 000 107,170 Inch. 0. . 00072 . 00172 . 00280 . 00306 . 00337 . 00373 .00119 . 00464 ,00525 .00625 . 00810 .012 Inch. 0. . 00072 .00100 . 00108 .00026 . 00031 . 00036 . 00046 . 00045 . 00061 .00100 .00185 .0039 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. Getieral summary. Tensile strengtli per sqnare inch of original secliion pounds.. 107,170 Elastic limit per square inch of original section do '.'. 75 000 Elonfjatiun per incli after rupture inch!! .'007 Elongation i er incli under strain at elastic limit do. . . . 00373 Eeduclion in area after rupture, per ccnUim of original section '.. ' 68 4 Position of rupture 8" outside the gauged section Character or broken suriace g^ne silky SQUARE AND FLAT STEEL WIRE. No. 3814. Sample 8. Sectional area, ".1493x".1494=.0223 square inch. Gauged lengtli, 10". 445 '_ Appliedloads. Elongation per inoli. Successive elongation per mcli. Permanent set. Successive permanent - set. Kemarks. Total. Per square iucb. Founds. Ill 440 892 1,338 1,449 1, r.Gl 1,672 ■ 1,784 1,895 2,007 2,118 2,190 Pounds. 6,000 20, 000 ' 40, 000 80, 000 65, 000 70, 000 75, 000 SO, 000 85, 000 90, 000 95, 000 98, 210 Inch. 0. .00078 .00172 . 00278 .00322 . 00360 .00408 . 00472 . 00662 . 00721 Inch. ■ 0. . 00078 .00094 .00106 .00044 . 00038 .00018 . 00064 . 00090 .001.59 Inch. 0. inch. 0. Initial load. Elastic limit. • Tensile strength. .01080 .00359 General summary. Tensile strength per square iuch of original section pounds.. 98,210 Elastic limit per square inch of original section do ...'70,000 Elongation per inch after rupture j inch.. .017 Elongation per inch under strain at elastic limit do.-.. .00360 Heduction in area after rupture, per centum" of ori^nal section ' - 56.J Position of rupture ....'. 2" outside the gauged section Character of broken surface fine silky IvTo. 3815. Sample 9. Sectional area, ".1514x".1513=.0229 square inch. Gauged length, 10". Appliedloads. Elongation ■per inch. Successive elongation per inch. Permanent set. Successive permanent set. Bemarks. Total. Per square inch. Pounds. 114 4.58 916 1,374 1,488 1,603 1,717 1,S32 1,946 , 2,(J61 2,175 2, 29.0 > 2,404 Pounds. 5, 000 20, 000 40, 000 60, 000 65,000 ■ 70, 000 75,000 80, 000 85, 000 90, 000 95, 000 100, 000 105, 000 Inch. 0. . 00068 . 00147 . 00229 . 00250 .00278 . 00305 -.00339 . 00376 . 00429 . 00503 . 00619 .00875 Inch. 0. , .00068 .00079 .00082 . 00021 .00028 .00027 . 00034 .00037 . 00053 . 00074 .00116 .00266 Inch. 0. Inch. 0- Initial load. Elastic limit. Tensile strength. - General summary. Tensile strength per square inch of original section pounds.. 105,000 Elastic limit per square inch of original section do... 85,000 Biongation per inch after rupture. .-.- inch.. .003 Elongation per inch under strain at elastic limit ._. do... .00376 deduction in area after rupture, per centum of original section 47.2 Position of rapture ..-- 2".75 outside the gauged section Character of brojien surface fine, silky 446 SQUARE AND FLAT STEEL WIEE. No. 3816. Sample 10. Sectional area, ".1500 x ".1487 = .0223 square inch. Gauged length, 10". Applied loads. Elongation per inch. Successive elOD^ation perincb. Permanent set. Suecessive permanent set. Bemarks. Total. Per square mch. Fmmds. Ill 446 892 1,338 1,449 , 1, 501 1,672 1,;84 1,895 2,007 2,118 2,230 ' 2, 341 Pounds. 6,000 20, 006 41), 000 60, 000 65, 000 70, 000 75, 000 80, 000 85, 000 90, 000 95, 000 100, 000 105, 000 Inch. 0. . 00073 . 00167 . 00274 . 00303 . 00340 . 00382 . 00423 . 00483 .00540 . 00680 .00906 Inch. 0. . 00073 .00094 . 00107 .00029 . 00037 . 00043 . 00041 . 00060 .00057 .00140 .00226 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. " General summary. Tensile strength per square incli of original section pounds. . 105, 000 Elastic limit per square inch' of original section , do... 70, 000 Elongation per inch after rupture inch... .015 Elongation per inch under strain at elastic limit do. .. . 00340 lleduction in area after rapture, per centum of original section 53. 4 Position of rupture ".75 inside the ganged section Character of broken surface „ ....fine, sUIiy SQUARE AND PI^AT STEEL WIRE. 447 SAMPLES PROM ENOS OP COILS AFTER 3D DRAWING, 1ST HOLE. No. 3817. ' Sample 1. Sectional area, ".1170x".1172=.0137 square inch. Gauged length, 10". Applied loads. ' Elougation per inch. Successive elongation per incli. Permanent set. Successive permanent set'. Eemarks. Total. Per square, inch. Pmndi. 68 274 -' 548 822 1,096 1,164 1,233 1,301 1,370 1,438 1,507 1,575 1,644 1,712 1,781 l,8t9 1,918 1,986 2,055 Poimds. 5,000 £0, 000 40, 000 60, 000 80, 000 85, 000 90,000 9^000 100, 000 105,000 110, 000 115, 000 120. 000 125, 000 130, 000 135, 000 140, 000 145, 000 150, 000 Inch. 0. .00075 , 00163 .00263 . 00371 .00398 . 00430 .00463 . 00SO8 .00547 . 00591 .00641 . 00700 .00763 . 00S48 ,00965 .01141 .016 .021 Inch. 0. . 00075 . 00088 .00100 .00108 . 00027' . 00032 .00033 .00045 .00039 .00044 .00050 . 00059 .00063 .00085 . 00117 .00176 . 00459 .005 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General summary^ Tensilestrengthper square inclij>f original section pounds.. 150,000 Elastic limit per square inoh of original section .- .do... 105, 000 Elongation per inch after rupture i inch.. .0J.1 Elongation per inch under strain at elastic limit do... .00547 Kediiction in area after rapture, per ceutum of original section 40. 9 Position of rupture 2" outside the gauged lengtlj Character of broken surface..... ...fine, silky 448 SQUARE AND FLAT STEEL WIKE. No. 3818. Sample 2. Sectional area, ".1178x".1172=.0137 square inch. Gauged length, 10". Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. Successive permanent set. Kemarks. Total. Per square inch. Pounds. 68 274 548 822 1,096 1,164 1,233 1,301 1,370 1,438 1,607 1,575 1,644 1,712 1,781 1,849 1,918 1,986 2,050 Pounds. 5,000 20, 000 40, 000 60, 000 80, 000 85, 000 90, 000 95, 000 100, 000 105, 000 110, 000 115, 000 120, 000 125, 000 130, 000 135, 000 140, 000 145, 000 14S, 640 Inch. 0. . 00077 .00163 . 00267 . 00363 . 00392 .00424 . 00461 '.00499 . 00542 . 00591 .00646 . 00712 . 00784 . 00874 .01007 .014 .017 Inch. 0. .00077 . 00085 .00105 . 00096 . 00029 . 00032 . 00037 . 00038 . 00043 . 00049 . 00055 . 00066 . 00072 . 00090 . 00133 . 00393 i .003 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. ' General summary. Tensile strength per square inch of orijjinal section pounds.. 149,640 Elastic limit per square inch of original section do... 100,000 Elongation per inch after rapture inch.. . 012 Elongation per inch under strain at elastic limit. do... ,00499 Heduction in area after rupture, per centum of original section 32. 8 Position of rupture ' 2".9 outside the gauged length Character of biolcen surface , fiiie, silky . ' SQUARE AND FLAT STEEL WIRE. No. 3819. • Sample 3. Sectional area, ".1179x".1179 = .0139 square inch. Gauged length, 10". 449 Applied loads. Elongation per inch. SaccesslTe elongation per inch. Permanent set. Successive permanent set. Bemarks. Total. Per square inch. • Pounds. 69 278 556 834 1.112 1,181 1,251 ]j320 1,390 1,459 l,!i29 1,598 1,668 1, 738 1,807 1,875 1,946 2,015 ( 2,085 2,154 2,182 Pounds. 5,000 20,000 40, 000 60, OOO 80, OOD 85, 000 , 90, 000 95, 000 100,000 105, 000 110, 000 115, 000 120, 000 125, 000 130, 000 135, 000 140, 000 145, OUO 150, 000 . 155, 000 156,980 Inch. 0. . 00075 . 00167 ,00258 ..00308 . 00388 . 00123 . 00460 . 00490 .00538 . 00S84 . 00633 . 00695 . 00760 . 00837 . 00925 . 01038 .014 .017 .021 Inch. 0. .00075 . 00092 .00091 . 00110 . 00020 ' . 00035 .00037 . 00030 .00048 . 00046 . 00049 . 00062 .00065 . 00077 . 00083 .00113 . 00362 .003 .004 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General summary. Tensilestrengtliper square iocli of original, section pounds,. 156,980 Elastic limit per square inch of original sectiou d(V. .. 100,000 Elongation per incLi after ruiJture infth.. .020 Elongation per inch under strain at eiastio limit. — -. .....do... ,00490 Reduction in area after rupture, per centum of original sectiun :. . 48.9 Position of rupture.-.- ".55 inside tlie gauged length Character of. broken surface , fine, si^y H. Ex. 165 29 450 SQUARE AND FLAT STEEL WIEB. No. 3820. Sample 4. Sectional area, ".1173x".1174=.0137 square inch. G-aaged length, 10". Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. Successive permanent set. Bemiirks. Total. Per square incli. Pounds. 68 274 548 822 1,096 1,164 1,233 1,301 1,370 1,438 1,607 1.675 1,644 1,712 1,781 1, 849 1,918 ' 1, 986 2,055 2,123 2,140 Pounds. 5,000 20, 000 - 40, 000 60, 000 80, 000 85, 000 90, 000 Inch. 0. . 00070 .00160 . 00243 . 00350 . 00378 _ 00407 Inch. 0. . 00070 . 00090 . 00083 .00107 . 00028 .00029 . 00038 . 00048 . 00047 . 00038 . 00053 .00061 . 00072 .00084 . 00092 .00128 . 00132 .005 .005 Inch. 0. Inoh. 0. Initial load. Elastic Umit Tensile strength. 93, 000 - 00445 100, 000 105, (100 110, 000 115,000 120, 000 126, 000 130, 000 13.% 000 140, 000 145, 000 150, 000 155, 000 156, 200 . 00493 . 00540 .00578 . 00631 . 00092 . 00764 . 00848 .00940 .01068 .012 .017 .022 General summary. Tensile strength per square inch of origitial section pounds.. 1S6, 200 Elastic limit per square inch of original section : do... 95,000 Elongation per inch after rupture '. inch.. .020 Elongation per inch under strain at elastic limit do... .00445 EeduLiion ip aiea after rupture, per centum of original section 32.8 Position of rupture — ".80 inside the gauged length Character of broken surface .....u fine, silky SQUARE AND' PLAT STEEL WIRE. No. 3821. Sample 4. Sectional area, ".1174:X".1178=.0138 square inch. Gauged length, 10". 451 Applied loads. Elongation per inch. Saccessive elongation per inch. Permanent set. Successive permanent set. Kemarks. Total. Per square iach; Pounds. 69 276 552 828 1,104 1,173 1,243 1,311 1,380 1,449 1,518 1,587 1^666 - 1,725 1,794 1,863 1,932 2,001 2,070 2,139 2,198 Pounds. 6,000 20, 000 40, 000 60, 000 80, 000 85, 000 90, 000 93, 000 100, 000 105, 000 110, 000 115, 000 120, 000 125, 000 130, 000 136, 000 140, 000 145, COO 150, 000 155, OOO 159, 280 Inch. 0. . 00076 .00161 .00258 . 00361 . 00383 .00418 .00451 .00489 . 00533 . 00578 . 00628 .00697 . 00753 .00835 .00924 .01029 .01167 ' .015 .020 Inch. 0. . 00076 -.D0085 . 00097 . 00103 . 00022 . 0O035 . 00033 .00038 .00043 .00046 . 00050 .00069 . 00056 ,00082 '. 00089 . 00105 .00128 . 00343 .005 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. - . -- G-eneral summary. <>; Tensile strength per square inch of original section pounds^ 159,280 Elastic limit per square inch of original section ^ do..'. 100,000 Elongation per infen. after rapture : inch.. .011 Elongation per inch under . strain at elastic limit do... . 00489 Eeduction in area after rupture, per centum of original section 31.9 Position of rupture 8".7 outside the gauged section Character of broken surface * ^e, silky 452 SQUARE AND FL.AT STEKL WIKE. Ho. 3822. , Sample 6. Sectional area, ".n84x".1185=,014f square inch. G-auged length, 10". Applied loads. Eiimsatiou per inoli. Succe-ssive elongation per inch. Permanent set. Successive permanent set. Eemarks. Total. Per square incli. Pounds. 70 280 660 840 1,1 !0 1,190 1,260 1,330 1,400 1,470 1, 540 1,610 1,680 1,750 1,820 1,890 lr960 2,030 2,100 2,170 2,184 Pounds. 5,000 20, 000 40, OOO 60, 000 80, 000 85, 000 90, 000 95, 000 100, 000 105, 000 110. 000 115, 000 120, OOO 125, 000 130, 000 135, 000 140, 000 145, 900 150, 000 165, 000 156, 000 Inch, 0. . 00074 . 00160 .00253 . 00358 .00385 . O0421 . 00449 . 00487 . 00529 . 00568 . 00621 . 00678 . 00743 .00817 . 00908 .01039 .01195 .017 .023 Inch. 0. .00074 ,00086 . 00093 .00105 .00027 . 00036 . 00028 .00038 . 00042 .00039 .00053 , 00057 . 00065 . 00074 . 00001 . 00131 .00156 . 00 505 .006 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. ' -^ ' '^' General summary. Tensile strength per square inch of original section pounda.. 166, 000 Elastic limit per square inch of origjiial section do.,. 110,000 Elongation per incli after rupture - inch.. . 022 Elongation per inch nniler ptraiu at elastic 'limit do... .00568 KetUiction in nrea after rupture, per centum of original eoction 42. 1 Position of rupture ".50 inside the gauged section Character of brolsen sucface £iie, silky SQUARE AND PLAT STEEL WIEE. No. 3823. 453 Sample 7. Sectional area, ".1161 x ".1160 = ".0135 square inch Gauged length, 10". Applied loads. EloBgation per inch. Successive elongation 1 per ihch. Permanent set. Sncoe^sive perhianeut set. Eemarks. Total. Per square inch. Pounds. 67 270 540 810 ,1, 080 1,147 1,215 1,282. 1,350 1,417 1,485 1,552 1,620 1,687 1,755 1,822 - 1,890, 1,957 2,025 2,092 2,106 Pounds. 5,000 20,000 40, 000 60, 000 80,000 85, 000 90, 000 95, 000 loo; 000 105, 000 110, 000 ' 115, 000 ' 120, 000 126, 000 130, 000 135, 000 140, 000 145, 000 160, 000 166, 000 156, 000 Incli. 0. . 00079 . 00162 .00267 . 00360 .00382 .00418 . 00444 . 00478 .00517 .00568 . 00602 ^00652 .00710 . 00779 .00851 .00964 .01111 .014 .018 Inch. 0. . 00079 . 00083 , .00096 .00103 .00022 . 00036 . 00026 .00034 .000^9 . 00041 .00044 . 00060 . 00068 . 00069 .00072 . 00118 . 00147 . 00289 .004 Inch. 0. Inch. 0. ' Initial load. Elastic limit. Tensile strength. ' ■ , ' , , General summary. Fensile strength per square inch of original section pounds.. 156,000 E!)autic limit per equare inch uf original section - do... 110, 000 Elongation per inch after rupture inch,. .007 EJongation per inch under att-ain at elastic limit '. do. .. .00558 Reduction in area after rupture, per centum of original section 43.7 Position of rupture ".11 outside the.gauged section Dharacteruf broken surface flue, silky 454 SQUARE AND PLAT STEEL WIRE. No. 3824. Sample 8. ' Sectional area, ".1193 x ".1189 = .0142 square inch. Gauged length, 10". Applied loads. Elongation per iucb. SuccessiTe elongation per inch. Permanent set. Successive permanent 9 set. Kemarks. Total. Per square inch. Pounds. 71 281 668 852 1,136 1,207 1,278 1,349 -1,420 1,491 1, 562 1,633 l,70l 1,775 1,846 1, 917 1,988 2, 069 2,118 Pounds. 5,000 20, 000 40,000 60, 000 80, 000 85, 000 98, OOO 95, 000 100, 000 105, 000 110, 000 H5, 000 120, 000 125, 000 130, 000 135, 000 110,000 115, OOO 119, 150 Inch. 0. . 00078 .00167 . 00263 .003*2 . 00401 . 00138 ,00478 . 00522 .00565 . 00618 .00686 . 00719 . 00821 . 00021 . 01051 .01262 .018 Jnah. 0. .00078 .00089 . 00095 . 00110 .00029 ..00037 . 00010 .00044 . 00043 . 00053 . 00008 . 00063 . 00072 . 00103 .00130 . 00208 .00638 Inch. 0. Inch. Initial load. Elastic limit. * » Tensile strengtn. General summary* Tensile atrengtb per square inch of original section ..ponnds. 149,150 Elastic limit per aqnare inch of original section , do... 105,000 Elongation pfer inch after rapture ' inch.. . 013 Elongation per inch nnder strain at elastic limit do... .00565 Keduction in area after ruptnre, per ceiltum of original section 47. 9 Position of rapture ".45 outside the gauged section Character of broken surface fine, silky SQUARE ANt) PLAT STEEL WIRE. No. 3825. Sample 9. Sectional area, ".1179 x ".1178 = .0139 square inch. Gauged length, ".10 46. Applied loads. Elongation per mclJ. SucpessiTe elongation per inch. Permanent set. Successive permanent set. , Remarks. Total. Per square incn. ' Pounds. 69 278 -556 834 1,112 1,181 1,251 1,320 1,390 1,459 1,529 1,598 - 1, 668 1,787 1,807 1,876 1,946 2, 016 - 2,085 2,147 . Pounds. 6,000 20, 000 40, 000 60,000 80, 000 • 85,000 90,000 95, 000 100, 000 105, 000 110, 000 116, 000 120, 000 125, 000 130, 000 135, 000 , 140, 000 145, 000 150, 000 154, 460 Inch. 0. . 00071 .00162 . 00260 . 00351 . 00374 .00403 . 00435 . 00468 . 00302 . 00548 . 00578 . 00628 . 00680 .00738 . 00808 . 00899 . 01028 .01310 Inch. 0. . 00071 .00091 . 00088 .00101 . 00023 . 00029 . 00032 . 00033 .00034 . 00046 . 00030 .00050 . 00052 . 00058 .00070 .00091 . 00129 .00282 Inch. 0. Inch, Initial load. Elastic limit. Tensile strength. - General summary. Tensile strength per square inch of original section ponnds.. 154, 4i Elaatic limit per square inch of original section ^ do... 115, Oi Elongation per inch after rupture inch.. ,0 Elongation per inch under strain at elastic limit do . . . ■ . 00& Reduction in area after rupture, per centum of original section 36. Position of rupture ^'1.85inside the gauged aectic Character of broken surface fine,silli 456 SQUARE AND PLAT STEEL WIRE. m. 3826. Sample 10. Sectional area, ".1165 x ".1169 : Gauged length, 10". .0136 square inch. Applied loads: Successive elon nation per inch. Permanent set. Successive permanent set. Semarks. Total. Per square incli. per inch. Pounds. 68 272 544 v8l6 1>088 1,156 1,224 1,292 1,360 1,428 1,496 1,661 1,632 1,700 1,768 1,830 1,904 1,872 > 2, 040 2,108 2,176 2,244 Pounds. 6,000 20, 000 40, 000 60,000 80, 000 85, 000 90, 000 95,000 100, 000 105, 000 110,000 116,000 120, 000 125,000 130,000, 135, 000 140, 000 146, 000 150, 000 155, 000 160, 000 165, 000 Inch. 0. > I . 00075 .00161 . 00265 . 00357 . 00372 .00400 .00426 . 00458 . 00490 . 00520 . 00665 . 00605 . 0065= . 00705 . 00764 . 00830 . 00910 .01012 .012 .014 .020 Inch. 0. . 00076 . 00086 . 00104 . 00092 . 00015 . 00028 . 00026 . 00032 . 00038 . 00024 . 00045 . 00040 .00047 . 00053 . 00069 . 00066 . 00080 . 00102 . 00188 .002 .006 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. Gevei^al summary. Tensile strength, per square inch, of original section pounds.. 165, 000 Ela,Btic limit, per square inch of original section , : do . . . 115, 000 Elongation per inch after rapture ;inch.. .010 Elongation per inch under strain at elastic limit do... . 00565 KeductioD in area after rupture, per centum of original section ■ 45. 6 Position of rapture 2" outside the gauged section Character of broken surface fine, sUky SQUARE AND PLAT STEEL WIRE. 457 SAMPLES FKOm ENDS OF OOILS AFTER THIRp DRAWING, SECOND HOLE. No. 3827. Sample 1. Sectional area, ".0996 x ".0995 = .0099 square inch. G/tuged length, 10". Applied loads. EloDgf^tion per inch. Successive elongation per inch. Permanent Bet. SnooessiTe permaqeut set. Kemarks. * Total. Per Square inch. Pounds. 49 198 396 594 792 990 1,039 1,089 1,138 1,188 1,237 1,287 1,336 1,386 1,435 1,485 1,534 1,584 1,633 Pounds. 5,000 20, 000 - 40, 000 6U, 000 80, 000 lOO, 000 105, 000 110, 000 115, 000 120, 000 125, 000 130, 000 135, 000 140, 000 145, OOO 150, 000 155, 000 160,000 165, 000 Inch. 0. . 00075 .00158 . 00244 .00343 . 00457 .00482 . 00515 . 00553 . 00583 . 00633 . 00682 .00743 . 00807 . 00888 . 00999 . 01106 , .016 Inch. 0. . 00075 . 00083 . 00086 .00099 .00114 . 0OO25 . 00033 . 00038 . 00030 . 00060 . 00049 . 00061 .00081 . 00081 .00111 . 00167 .00434 Inch. 0. Inch. 0. Initial load. Elastic limit Tensile strength. ; General summary. Tensile strength per square inct of original section pounds.. 165, 000 Elastic limit per square iuch of original section do... ,120,000 Elongation per incbi affer rupture inch... .007 Elongation per inch under strain at elastic li^it do.-. . 00583 Reduction in area after rupture, per centum of original section 38.4 Position of rupture 8". 75 outside the gauged section Character of broken surfooe fine, silky 458 SQUARE AND FLAT STEEL WIRE. No. 3828, Sample 2. Sectional area, ".0992 x ".0995 =.0099 square inch. Gauged length, 10". Applied loads. ElongatioA perinoh. Successive elougation per inch. Permanent set. Successive permanent set Remarks. Total. Per square inch. Pounds. 49 198 396 594 792 990 1,039 1,089 1,138 1,188 1,237 1,287 1,336 1,380 1,435 1,485 1,534 1,584 Pounds. 5,000 20,000 40, 900 60, 000 80, 000 100, 000 105, 000 110, 000 115, 000 120, 000 ■l-.;5, 000 130, 000 13.5, 000 140,000 145, UOO 150, COO 155. 000 160, 000 Inch. !oo!)73 . 00160 . 00251 . 00361 . 00470 . 00491 .00536 . 00578 . 00607 . 00657 . 00720 . 00775 . 00848 . 00940 .01073 .01295 .016 Inch. 0. . 00073 . 00087 . 00091 .00100 .00119 . 00021 .00045 . 00U42 . 00029 . 00050 . 00063 . 00055 . 00073 . 00092 . 00133 . 00222 .00305 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General summary. Tensile strength per square inch of original section ponnda.. 160, 000 JElasiic limit per square inch of original section... do... 320,000 Elongation per inch after rupture inch.. . 003 Elongation per inch under strain at elastic limit ,-.do.-. .00607 Beduction in area after rupture, per centum of original section 38. 4 Position of rupture 9" outside the gauged section iCharacter of broken surface ^ fiueifiilky SQUARE AND FLAT STEEL WIEE. No. 3829. 459 Sample 3. Sectional ajea, ".1005 x ".1012 = .01 square inch. Gauged length, 10". Applied loads. Elongation per incli. Succeaaive elongation per inoh.i Permanent set. Snccessive permanent set. Kemarka. Total. Por-Bquare inch. Pounds. 5U 200 400 600 800 1,000 1,050 1,100 1,150 1,200 1,260 1,300 1,350 1,400 1,450 1,500 1,550 1,600 1,650 1,700 1,718 Pounds. 5,000 -20, OOO 40,000 60, 000 80, 000 100, 000 106, 000 110, 000 115, 000 120,000 ^ 125,000 130, OO'O 136, 000 140, 000 145, 000 150, 000 155, 000 160, 000 165, OOO 170, 000 171,800 ■ Inch. 0. ■ .00078 .00168 . 00261 . 00352 .00(58 .00484 .00517 . 00552 . 00590 .00027 .00668 .00717 . 00778 . 00850 . 00937 . 01057 . 01245 .015 .020 Inch. 0. . 00078 . 00000 . 00093 . 00001 .00106 .00026 . 00033 . 00035 . 00038 .00037 .00041 .00049 . 00061 . 00072 . 00087 .00120 . 00188 . 00256 .005 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. • - General summary. Tensile strength per square inch of original section ponnrts.. 171,800 Eastic limit per square inch of original section .; do ., 130,000 Elongation per inch after rupture. inch., .014 Elongation per inch under strain at elastic limit...' do... .00668 Redaction in area after rupture, per centum of original section 45. Position of rupture _. ".4 outside the gauged section Ghracterof broken surfaee fine, silky 460 SQUARE AND FLAT STEEL WIRE. No. 3830. Sample 4. Sectional area, ".0999 x ".0998 = .0(f99 square inch. (raugeJd length, 10". Applied loads. Elongation per in oh. Sncceasive elongation per inch. Permanent set. Successive permanent set. Remarks. Total. Per square inch. PounAit, 49 198 396 594 792 990 1,039 1,089 1,138 , 1. 188 1, 237 1,287 1,336 1,386 1, 435 1,485 1^534 1,584 1,633 1,683 Pounds. 5,000 20, 000 40, 000 00, 000 80, 000 100, 000 105,000 110, 000 115, 000 120, 000 125, 000 130, 000 135, 000 140, 000 145, 000 150, 000 155, 000 160,000 165, 000 170, 000 Inch. 0. . 00077 .00160 . 00250 . 00344 .00458 . 00480 . 00512 . 00545 . 00586 .00636 . 00683 . 00726 . 00791 . 00868 . 06903 .011 , .013 ' .017 Inch. 0. . 00077 . 00083 .00090 . 00094 . 00114 . 00022 .00032 . 00033 . 00041 . 00060 . 00047 .00042 . 00066 . 00077 . 00096 , 00137 .002 .004 Inch. 0. Inch,. 0. Initial load. Elastic limit. Ultimate strength. General summary. Tensile strength per square inch of original section pounds.. 170,000 ~ Elastic limit per square inch of original section do... 120,000 Elpngation per incn after rupture inch.. ^016 Elongation per inch under strain at elastic limit (lo... .00586 Keduction in area after rupture, per centum of original section .^ 38.4 Position of rupture ".90 outside the gauged section Character of broken surface - ..,. .fine, sUky SQUARE AND FLAT STEEL WIRE. No. 3831. Sample 5. Sectional area, ".1005x".1005=.01 square inch. Gauged length, 10". 461 Applied loads. Elongation per inch. Snocepaivo elongation per inch. Permanent sot. Successive permanent set. - KemarkB. Total. ' Per sqnaTG inch. _ Pounde. 50 200- 400 ,600 800 1,000 . 1,050 1,100- 1,150 ' .1,200 1,260 1,300 1,350 1,400 1,460 1,500 1,550 1,600 1,650 1,700 Pounde. 6,000 20,000- 40, 000 60, 000 80, 000 lOO.'OOO 105, 000 110, 000 115, 000 120, 000 125, 000 130, 000 135, 000 140, 000 145, 000 160, 000 155,000 160, 000 165, 000 170, 000 Inch. 0. . 00082 . 00167 . 00256 ■ . 00357 . 00468 . 00492 .00528 . 00567 . 00608 . 00644 . 00697 . 00748 .00817 . 00905 . 01030 .01120 .01340 .017 .025 Inch. 0. . 00082 . 00085 .00089 .00101 .00111 . 00034 . 00036 . 00039 .00041 . 00036 . 00053 . 00051 . 00009 . OUOCS . 00135 . 00090 .00230 . 00360 .008 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General summary. Tensile Btrength per square inch of original section pounds.. 170,000 Elastic limit per square inch of original section , do... 125,000 Elongation per inch after rupture , ; inch. . . 019 Elongation per inch" under strain at elastic Umit dp... .00644 Keducf ion in area after rupture, per centum of original section 33. Position of rupture 3". 4 Inside the gauged section Character of l)COken suii'ace iflne, silky 462 ' SQUARE AND FLAT STEEL WIKE. No. 3832. Sample 6. Sectional area, ".0997x".0998=:".0099 square incii. Gauged length, 10". Applied loads. ElODgation per inch. Succesaire elongation per incli. Permanent set. Successive permanent set. Kemarks. Total.- Per square inch. Pounds. ,49 198 396 694 792 990 1,039 1,089 1,138 1,188 1,237 1,28.7 . 1,336 1,386 1,435 1, 485 1,534 1,584 1,633 1, 662 Pounds. 5,000 20, 000 40, 000 60,000 ■ 80, 000 100, 000 105,000 110, 000 115, (jOO 120, 000 125, 000 130, 000 135, 000 140, 000 145, 000 ISO, 000 165, 000 160, 000 16.5, 000 167, 880 Inch. 0. .00076 . 00162 . 00243 . 00348 . 00467 . 00485 . 0O523 . 00505 . 00597 .00642 . 00695 . 00750 .00840 . 00940 .01680 .01200 .014 .020 Inch. 0. .00076 . 00086 .00086 . 00100 . 00119 . 00018 . 00038 . 00042 . 00032 .00045 . 00U63 . 00065 . 00090 .00100 .01)140 .0UL80 .00140 .006 I Inch. 0. Inch. 0. Initial load. Elastic limit. , Tensile strength. General summary. Tensile strength per square inch of original section ponnda . . 167; 8S0 Elastic limit per square inch of original section do... .012 Elongation per inch after rupture inch.. 120,000 Eloogation per inch under strain 3t elastic limit do... . 00597 Beduction in area after ruptqre, per centum of original .section 46. 5 Position of rupture .r'.45 outside the gaugrd section Character of broken aui-face line, silky SQUAEE AND FLAT STEEL WIEB. No. 3833. Sample 7. Sectional area, ".1003 x ".1014 = .0101 square inch. Gauged length, 10". 463 Applied loads. Successive elongation per inch. Permanent set. Successiro permanent set. Kemarks. Total. I'er square inch. per inch. Founds. 60 202 404 606 808 1,010 1,060 1,111 1,161 1,212 1,262 1,313 1,363 1,414 1,464 1,515 1,565 1,616 1,666 1,684 Pounds. 5,000 20, 000 40, 000 60, 000 80, 000 100, 000 105, 000 110, 000 115, 000 120, 000 126, 000 130, 000 136, 000 140. 000 145, 000 150, 000 155, 000 160, 000 165, 000 166,730 Inch. 0. '00088 . 00172 . 00277 .00306 . 00487 . 00512 . 00552 .00590 .00633 . 00685 . 00738 .00800 . 00880 . 00970 . 01097 . 01285 .017 .021 Inch. 0. . 00088 .00084 . 00105 . 00089 .00121 . 00026 .00040 . 00038 . 00043 . 00052 . 00053 . 00062 . 00080 . 00090 . 00127 . 00188 .00415 .004 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General summary. Tensile strength per square inch of original section pounds.. 166,730 Elastic limit per square inch of original section do... 120, 000 Bloogation per inch after rupture '. inch.. .022 Elongation per inch under strain at elastic limit ....do., . .00633 Iteduotion in area after rupture, per centujn of original section 44.5 Position of rupture 1".30 inside the ganged length Character of broken surface tine, silky 464 SQUAEE AND FLAT STEEL WXEE, No. 3834. Sample 8. Sectional area, ".0994:X".0994=".0099 square inch. Gauged length, 10".. Applied loads. EloDjjration per inch. Successive elonsation per inch. Permanent set. Snoreesive permanent set. EemarkB. Total. Per sqoare inch. Pounds. 49 198 396 594 792 990 1,039 1,089 1,138 1,188 1,237 1,287 1,336 1,386 1,435 1,485 1,534 1,584 1, 0-i3 1,670 Pounds. 5,000 20, 000 40,,000 60, OfiO 80,000 100, 000 105, 000 110,000 115, 000 1211, 000 125, 000 -130, 000 135, 000 140, 000 145, 000 150,000 155, 000 160, 000 163, 000 168,600 Inch. 0. . 00080 . 00160 . 00258 . 00358 .00458 . 00478 .00510 . 00542 . 00580 . 00620 . 00662 . 00720 . 00777 . 00851 . 00942 .01085 . 01285 .017 .020 Inch. 0. . 00080 . . 00080 .00098 .00100 .00100 . 00030 . 00032 . 000:J2 .00038 . 00040; . 00042 . 00058 . O0O57 . 00074 . 00091 . 00143 .00200 - . 00415 .003 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. * Ge7iei'al summari). Tensile strength per square inch of original section .' pounces.. 168, 690 Elastic limit per square inch of original section do... 130, 000 Elong'ation per inch after rupture inch.. .008 Elongation per inch under strain at elastic limit do... . 00662 Keduction in area after rupture, per centum ot original section 40. 4 Position of rupture ",60 outside the gauged aeclion Ciiaraoter of broken sai'i!»cd 4 fine, silky SQUAEE AND FLAT STEEL WlBE. No. 3835. Sample 9. Sectional area, ".0993 x ".0994=.0099 square inch. Gauged length, 10". 466 Applied loads. Elongation per inch. Snocessive elongation per inch. Permanent set. Snocessive permanent set. Kemarks. Total. Per square incb. I'oimds. 49 198 396 594 792 990 1,039 1,089 1,138 1,188 1,237 1,287 1,336 1,386 1,435 1,485 1,534 1,584 1,633 1,666 Pounds. 5,000 20, 000 40, 000 60,000 80,000 100, 000 105,000 110, 000 I15,flp6 120, 000 125, 000 130, 000 135, 000 140, 000 145, 000 150, 000 165,000 160, OCO 165, 000 168,280. Inch. 0. . 00081 .00369 . 00259 . 00360 . 00475 .00502 . 00643 .00682 .00620 .00673 .00723 .00784 , 00856 .00939 .01052 .01220 .015 .019 Inch. 0. . 00081 . 00088 .00090 .00101 . 00115 . 00027 . 00041 . 00039 .00038 . 00053 .00060 . 00061 . 00072 .00083 ,00113 .00168 .0028 .003 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General summary, Tellslle stren^tlL per square inch of original section poands.. 168,280 Elastic limit per square inch of original section do... 120,000 Elongation pec inch after rupture inch.. . OU Elongation per inch under strain at elastic limit do... .00620 Keduction in area after rupture, per centum of original section 30.3 Fosition of rupture 3''. 35 outside the gauged section Character of broken surface , .....fine, silky a. Ex. 165 30 466 SQUARE AND FLAT STEEL WIRE. No. 3836. Sample 10. Sectional area, ".1004x".1006=.010 square inch. Gauged length, lO". Applied loads. ElongatioD per inch. SuooessIvB elongation per inch. Permanent set. Successive permanent set. Kemarks. Total. Per square Inch. Pounds. 60 200 400 600 800 1,000 1,050 1,100 1,150 1,200 1,250 1,300 1,350 1,400 1,460 1,500 1,550 1,600 1,650 1,700 1,750 1,800 Pounds. 6,000 20, 000 40, 000 60, 000 80, 000 100, 000 105, 000 110, 000 115, 000 120, 000 125, 000 130, 000 135, 000 140, 000 145,000 160, 000 166, 000 160, 000 165, 000 170,000 175, 000 180,000 Inch. 0. . 00086 . 00167 . 00253 .00343 .00446 . 00473 . 00606 . 00537 . 00575 . 09610 .00653 . 00703 . 00760 .00805 . 00870 . 00965 .01040 . 01160 .014 .017 .024 Inch. 0. .00086 . 00081 . 00086 .00090 . 00103 .00027 . 00033 . 00031 . 00038 .00035 . 00043 . 00050 . 00057 . 00046 .00065 . 00085 . 00085 . 00120 . 0U240 .003 .007 Imsh. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General summary. Tensile strength pel square inoh of original section pounds.. 180,000 Ela^ticlimit per Bqnare inch of original section , » ...do... 125, 000 Elongation per incn after rupture..^ inch.. .019 Elongation per inch uuder strain, at elasticlimit do... .00610 deduction in area after mpture, per centum of original section 36.0 Position of rapture 1".20 Inside the gauged section Character of broken surface fine, sUkj SQUARK AND FLAT STEEL WIKE. FINISHED WIRE ".1 SQUARE TINNED. Ko. 3798. Sample 1. Sectional area, ".0986x".099=.0097 square inch. Gauged length, 10". 467 Applied loads. Elongation SncCBaslve elongation per mcb. Permanent set. Sncoessive permanent eet. Kemarks. Total. Per square inch. per moh. Pounds. 48 194 388 582 776 824 873 921 970 1,018 1,067 , 1,115 1,164 1,212 .1,261 1,309 1,358 1,406 1,455 1, 603, 1,552 1,600 1,649 1,697 1,738 Pounds. 5,000 20, 000 40, 000 60, 000 80,000 86,000 90,000 99, 000 100, 000 109, 000 110, 000 115,000 120,000 ' 125,000 130, 000 139,000 140,000 149,000 190, 000 155, OOO 160, 000 165,000 170, 000 175, 000 179, 180 Inch 0. .00079 .00160 .00220 .00298 . 00314 .00332 . 00355 .00379 . 00393 .00418 .00438 , 00463 .00488 . 00913 .00540 .00568 .00603 .00642 . 00698 . 00760 .00872 .01088 .018 Inch. 0. ' .00076 . 00075 . 00070 . 00078 . 00016 . 00018 .00023 . 00020 .00018 . 00025 . 00020 . 00025 .00025 . 00025 . 00027 ,00028 . 00C35 .00039 . 00056 - .00062 . 00112 . 00216 .00712 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile etrengtli. General summary. Tensile strength per sqnare inch of original section ponnds.. 179,180 Elastic limit per square inch of original section do... 150,000 Elongation per inch after rupture -*.. inch.. .023 Elongation per inch under strain at elastic limit „..do... .00642 Bednction in area after rupture, per centum of original section 37.1 Position of rupture ....2".29 inside the ganged section Character of hroken surface «... fine, silky 468 SQUARE AND FLAT STEEL WIRE. No. 3799. Sample 2. Sectional area, ".0990x".0993=.0098 square incli. Gauged length, 10", Applied loads. Sncoessive elongation per inch. Permanent set. Successive permanent set. Kemar^. Total Per Bqnare inQh. per Inch. Pmmds. 49 196 392 588 784 980 1,029 1,078 1,127 1,176 1,225 1,274 1,323 1,372 1,421 1,470 1,619 1,568 1,617 1,666 1,708 Pounds. 6,000 20, 000 40, 000 60, 000 80,000 100, 000 105, 000 110, 000 115, 000 120, 000 125, 000 130, 000 135, 000 140, 000 145, 000 150, 000 155, 000 160,000 165, 000 17,0,000 174, 290 Inch. 0. . 00065 .00138 .00220 . 00298 . 00374 . 00388 .00411 . 00436 .00460 .00482 . 00511 .00539 . 00570 .00604 .00648 .00714 . 00797 . 01037 .020 Inch. 0. . 00065 . 00073 . 00082 . 00078 .00076 .00014 .00023 . 00027 . 00024 . 00022 . 00029 . 00028 . 00031 . 00034 . 00044 . 0U066 . 00083 . 00240 .00963 Inch. 0. iTUSh. 0. Initial load. Elastic limit. Tensile strength. General summary. Tensile strength per sqnare inch of original section pounds . . 174, 290 Elastic lirpit per square inch of original section do,.. 145,000 Elongation per inch after rnptare : inch-. . 015 Elongation per inch under stnrain at elastic limit do... .00604 Eeduction in area after rupture, per centum of original sectioh 34.7 Position of rupture .„ 5". 2 outside the gauged section Gha^racter of broken Biirfaoe *...« - fineisjlky SQUARE AND FLAT STEEL WIRE. K'O. 3800. le 3. 469 Sectional area, ".0988 x ".0994= .0098 square inch. Gauged length, 10 ". Applied loads. Elongation per inoli. Suooeaslve elongation per inch. Permanent set. SuocessiTe permanent set. Bemarks. Total. Per square inch. Pounds. 49 196 - 392 588 ', 784 980 1,029 1,078 1,127 1,176 1,225 1,274 1,323 1,372 1,421 1,470 1,519 1,568 1,617 1,666 1,715 1,764 1,800 Pounds. 5,000 20, 000 40,000 60, 000 80,000' 100, 000 105, 000 110, 000 115, 000 120, 000 125, 000 130, 000 , 135,000 140, 000 145,000 150, OOO 155, 000 ] 60, 000 165, 000 170,000 175, 000 180, 000 163, 670 Inoh. 0. . 00064 . 00138 . 00216 . 00296 . 00377 . 00392 .00414 . 00434 . 00461 .00486 . 00505 . 00526 . 00551 .00584 .00611 . 00657 . 00702 .00776 .00890 . 01270- .021 Ineh. 0. . 00064 .00074 . 00078 .00080 . 00081 . 00016 .00022 . 00020 .00027 . 00025 .00019 . 00021 . 00025 . 00033 . 00027 . 00046 . 00045 .00074 . 00114 . 00380 .00830 Inch. 0. Inoh. 0. Initial load. Elastic limit. Tensile strengtii. , General summary. Tensile strength per square inch of original section , pounds.. 183,670 Elasticlimit per eqnare inch of original section .do... 150, 000 Elongation per inch after rupture .'... - inch.. 0.30 Elongation per inch under strain at elastic limit -.. do... .00611 Beduction in area atter rnpturt}, per centum of original section - 36,7 Position of rupture 3".75 inside the gauged section Character of broken sniface fine, silky 4?0 SQUARE AND FLAT STEEL WiRE. No. 3801. Sample 4. Sectional area, ".0987 x ".0992 =.0098 square inch. Gauged length, 10". Applied loads. Elongation per incb. Successive elongation per inclL Permanent set. SuocessiTe permanent set. Bemarks. TotaL Per Bqnare inch. Povmdf. 49 196 392 588 784 080 1,029 1,078 1,127 1.178 1,225 1,274 1,323 1,372 1,421 1,470 1,519 1,668 1,617 1,666 1,715 1,764 JPounds. 5,000 20, 000 40, 000 60, 000 80,000 100, 000 105,000 110, 000 115, 000 120, 000 126,000 130, 000 135,000 140,000 145,000 150, 000 155, 000 160,000 165, 000 170, 000 175, 000 180,000 Inch. 0. .00077 . 00152 . 00235 .00304 . 00395 .00408 .00437 .00455 .00478 .00506 .00531 . 00653 .00688 . 00618 . 00653 . 00700 . 00768 .00886 .01142 .018 Inch. 0. .00077 . 00075 . 00083 . 00069 .00091 . 00013 .00029 . 00018 .00023 . 00028 .00025 . 00022 . 00035 . 00030 . 00035 . 00047 .00068 . 00117 .00257 . 00658 Indh. 0. Inch. .0 Initial load. Elastic limit. Tensile strength. Qenei'ol summary. Tensile Btrength per square inch, of original section pounds.. 180,000 Blastio limit per square inch of original section do... 150,000 Elongation per inch after rupture inch . . . 015 Elongation per inch under strain at elastic limit do... .006S3 Beduction in area after rupture, per centum of original section 37.8 Position of rupture ".80 outside the ganged section Character of broken surface....; flue, silky SQUARE AND PLAT STEEL WIRE. No. 3802. Sample 5. Sectional area, ".1002 x ".1003 = .010 square inch. Gauged length, 10". 471 Applied loads. Elongation per incli. Successive elongation per inch. Permanent set. Successive permanent set. Kemarks. Total. Pur square inch. Pounds. 50 200 '400 600 800 1,000 1,050 1,100 1,150 1,200 1,250 1,300 1,360 1,400 1,450 1,500 1,550 1,600 1,650 1,700 1,780 1,800 1,802 Pounds. 5,000 20,000 40,000 60, 000 80, 000 100, 000 105,000 110, 000 115,000 120, 000 125, 000 130, 000 135, 000 140, 000 145, 000 150, 000 155, 000 160, 000 165, 000 170,000 175, 000 180, 000 180, 200 Inch. 0. . 00070 . 00150 .00228 . 00308 .00390 . 0040S .00430 . 00451 .00480 . 00500 . 00528 .00558 .00583 .00618 . 00660 . 00711 . 00785 .00911 , . 01158 .018 .027 Inch. 0. . .00070 . 00080 . 00078 .00080 . 00082 .00018 .00022 . 00021 . 00029 . 00020 . 00028 .00030 .00025 . 00035 .00042 .00051 .00074 .00126 .00247 ..00642 .009 Inch. 0. iTUih. 0. Initial load. Elastic limit. Tensile strength. General summary. Tensile Btrengtb per square inch of original section pounds. . 180,200 Elastic limit per square inch of original section do... 145,000 Elongation per inch after rnptnre inch.. .025 Elongation per inch under strain at elastic limit do. . - . 00618 Redaction in area after rnpture, per centum of original section '. 33.0 Position of rupture ".80 inside the gauged section Character of broken surface fine, silky 472 SQUARE AND PLAT STEEL WIRE. No. 3803. Sample 6. Sectional area, ".0994x".0100=.0099 square inch. Gauged length, 10". Applied loads. Elongation per inch. SucceBsive elongation per inch. Permanent set. Successive permanent set. Eemarka. Total. Per sqaare inch. Pounds. 49 198 396 694 792 990 1,039 1,089 1,138 1,188 1,237 1,287 1, 336 1,386 1,435 1,485 1,634 1,584 1, 633 1,683 1,732 1,762 Pounds. 5,000 20, 000 40, 000 GO, 000 80,000 100, 000 105, 000 110, 000 115, 000 120, 000 125, 000 130,000 135, 000 140, 000 145, 000 160, 000 165, 000 160, 000 165. 000 170, 000 175, 000 177, 980 Inch. 0. .00074 . 00151 . 00231 .00313 . 00416 .00426 .00446 .00480 . 00505 .00541 . 00573 , . 00608 . 00650 . 00693 . 00750 . 00830 . 00906 . 01056 .01500 .02200 Inoh. 0. .00074 . 00077 .00080 . 00082 . 00103 . 00010 . 00020 . 00034 . 00025 . 00036 . 00032 . 00035 . O0O42 . 00043 . 00057 . 00080 . 00076 . 00150 . 00444 .007 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General summary. TcDaile strength per aqxtare inch of original section pounds.. 177, 080 Klastic limit per square inch of original section do... 135, 000 EloDgation per ioch after rupturo inch.. . 024' Elongation per inch under strain at elastic limit do .. .00608 Keduction in area after rupture, per centum of original section 32. 3 Position of rupture 1". 65 inside the gauged section Character of broken 8nr£a.ce .....fine, silky SQUARE AND FLAT STEEL WIRE. No. 3804. Sample 8. Sectional area, ".0993x".0994=.0099 square inch. Gauged length, 10". 473 Applied loads. Elongation per inch. Saccessive , elongation per inch. Permanent set. Saccessive permanent set. Bemarks. Total. Per sqnare inch. Fmmda. 49 198 396 594 792 990 1,039 1,089 1,138 1,188 1,237 1,287 1,336 1,386 1,435 1,485 1,534 1,684 1,633 1,683 1,730 Pound). 6,000 20,000 40, OCO 60, 000 80, 000 100, 000 105,000 ' 110, 000 116, 000 120, 000 125, 000 130, 000 135, 000 140, UOO 145, 000 ISO, 000 165, 000 160, 000 165, 000 170. 000 174, 750 Inch. 0. .00078 .00155 . 00228 . .00310 . 00388 .00406 . 00424 .00448 . 00467 .00490 . 00612 . 00539 .00570 . 00597 . 00637 . 00689 . 00781 .01223 .022 ' Inch. Q. .00078 .00078 . 00072 . 00082 .00078 .00018 .00018 . 00024 .00019 . 00023 .00022 . 00027 .00031 . 00027 . 00040 . 00052 .00092 . 00442 .00977 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General summary. Tensile strength per square inch of original section ......^ ponnds.. 174,750 Elastic limit per square inch of original section do... 14.^000 Elongation per inch after rupture inch.. .021 Elongation per inch nnder strain at elastic limit do... .00697 Beduction in ai;ea after rapture, per centum of original section 43. is Position of rupture 5".95 outside the ganged section Character of broken surface fine, silky 474 SQUARE AND FLAT STEEL WIEE. No. 3805. Sample 9. Sectional area, ".0996x".0995=.0099 square inch. Ganged length, 10". Applied loada. Elongation per incli, SacceBsite elongation per inch. Permanent set. Successive permanent set. Semarl^s. Total. Per aquare incb. Pounds. 4!i 198 396 594 792 990 1,039 1,089 1,138 1,188 1,237 1,287 1,336 1,386 1,435 1,485 1,534 1,584 1,633 1,683 1,732 1,780 Pounds. 5,000 20, 000 40, 000 60, 000 80, 000 100, OOO 105, 000 110, 000 115, 000 120, 000 125, 000 130, 000 135, 000 140, 000 145, 000 150, OOO 155, 000 160, 000 165, 000 170, 000 175,000 179,800 Inch. 0. . 00072 .00149 .00224 .00308 . 00395 .00413 . 00436 .00467 .00487 .00514 .00544 .00571 .00602 .00642 . 00686 . 00738 .00818 . 00933 .013 .017 IncJi. 0. . 00072 .00077 . 00075 .00084 . 00087 .00018 .00023 .00031 . 00020 .00027 . 00030 .00027 . 00031 . 00040 . 00044 . 00052 .00080 .00115 . 00267 .005 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. ' General summary. Tensile strength per square inch of original section pounds.. 179,800 Blastio limit per square iuch of origins^ section do... 140,000 Elongation per inch after rapture inch.. .012 Elonfiatiou per inch under strain at elastic limit do... .00602 Keductionin area after rupture, per centum of original section 25.3 Position of rupture 3. "95 outside the gauged section Character of broken Burfikce fine, silky SQUARE AND FLAT STEEL WIRE. No. 3806. Sample 10. Sectional area, ".1002x".1004=.010 square inch. Gauged length, 10". 475 Applied loads. Elongation per inoh. Successive elongation per inch. Permanent set. Snccessive permanent set. Eemarks. Total. Per sqoare inch. Pounds. 50 200 400 600 800 1,000 1,050 1,100 1,150 1,200 1, 250. 1,300 1,350 1,400 1,450 1,500 1.550 1,600 1,650 1,700 1,750 1,800 1,850 1,900 1,908 Pomids. S,000 20, 000 40, 000 80,000 80, 000 100, 000 105, 000 110, 000 115, 000 120. 000 125, 000 130, 000 135, OOO 140, 000 145, 000 150, 000 155,000 , 160, 000 165, 000 170, 000 175, 000 180, 000 185, 000 190, 000 190, 800 Inch. 0. . 00073 .00160 .00226 .00305 . 00383 .00403 . 00427 .00447 . 00473 .00498 . 00524 . 00563 . 00577 . 00609 . 00647 .00677 . 00725 .00776 . 00845 .00912 .011 .013 .017 Inch. 0. . 00073 . 00077 . 00076 . 00079 .00078 .00020 . 00024 . 00020 •00026 .00025 .00026 . 00029 .00024 . 00032 . 00038 . 00030 . 00048 . 00051 . 00069 .00067 .00188 .002 .004 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. . General summary, Ti?nsile strength, per square iijcb of original section poniyls.. 190,800 E.aslic limit per square inch of original section... .-..do... 155,000 E ongation per inch after rupture , ...inch.. .012 E ongation per inch under strain at elastic limit do... .00670 Beduction in area after rupture, per centum of original section 39. 7 Position of rupture ".75 inside the ganged section Character of broken sarfaoe..... £ne, silky 76 SQUAitE AND PLAT STEEL WIRE. .1-INCH Sqttaee Tinned Steel Wire. No. 3997. Mark, No. 15. Sectional area, ".1002 x ".1001 =.010 square inch. Ganged length, 10". Applied loads. Elongation per inch. Saccessive elongation per moh. Permanent 8et. Succeasive permanent set. Hemarks. Total Per sqnaTe incn. Ptnmdt. 50 200 400 600 800 1,000 1,200 1,250 1,300 1,350 1,400 1,450 1,500 1,550 1,600 1,660 1,700 1,750 1,800 Poundi. 5,000 20, 000 40,000 60, 000 80,000 100, 000 120,000 125, 000 130, 000 135, 000 140, 000 145, 000 150, 000 155,000 160, 000 165, 000 170, 000 175, 000 180,000 Inch. 0. .00070 . 00143 . 00236 .00300 .00303 .00491 . 00510 .00537 . 00567 .00605 . 00638 . 00685 .00735 . 00804 . 00890 . 01061 .016 .030 Inch. 0. .00070 ■.00073 . 00093 .00064 . 00093 .00098 .00019 . 00027 . 00030 . 00038 . 00033 .00047 . 00050 . 00069 . 00086 . 00171 . 00539 .014 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. Grencral summary^ 'ensile strength per sqnare incli of original section ponnds.. 180,000 laatic limit per sqnare inch of original section do... 145,000 llongation per inch after rapture inch.. . 024 lloDgation per inch nnder strain at elastic limit do.-. .00638 :ednction in area after rupture, per centum of original section 42. osltion of rfl-pture at end of gauged section haraoter of broken sorfaoe ...line, silky SQUARE AND FLAT STEEL WIRE. 477 No. 3998. Mark, IfTo. 20. Sectional area, ".0994 x".0995=.0099 square inch. Gauged length, 10". Applied loads. Elongatiou per inch. Successive eloii£:allon per inch. Permanent set. Successive permanent set. Bemarks. Total. Per square inch. Potmde, 49 198 396 594 792 990 1,188 1,237 1,287 1,336 1,386 1,436 1,485 1,535 1,584 1,634 1,683 1,733 1,782 1,832 1,868 PomidB. 6,000 20, 000 40,000 60, 000 80, 000 100,000 120,000 125, OCO 130, 000 135,000 140, 000 145, 000 150,000 155, 000 160, 000 165, 000 170, 000 175, 000 180, 000 185, 000 188, 690 Inch. 0. . 00069 .00142 .00221 . 00297 .00381 . 00467 .00482 . 00503 .00530 . 00555 .00581 . 00610 .00647 . 00678 . 00731 . 00790 . 00932 .61160 .022 Inch. 0. . 00069 .00073 . 00079 .00070 .00084 .00086 .00015 . 00021 . 00027 . 00025 .00026 .00029 . 00037 .00031 . 00053 .00059 .00142 .00228 .0104 Inch. 0. Inch, 0. Initial load. Elastic limit. Tensile strength. General summary. Tensile strengtb per square inch of original section pounds. . 188, 690 Elastic limit per square inch of original section do... 160,000 Elongation per inch after I'uptnre *inch.. .027 Elousation per inch under strain at elastic limit do... .00678 Seduction in area after rapture, per centum of original section 13,1 Position of rapture 2".8 inside the ganged section Character of broken surface fine, silky 478 SQUARE AND FLAT STEEL WIRE. ■ , No. 3999. ■ Mark, No. 25. Sectional area, ".0992x".0996=".0099 square inch. Gauged length, 10". Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. Successive permanent set. ■ Kemarks. ' Total. Per square inch. Pounds, 49 198 396 ■ 594 792 990 1, li-8 1,237 1,287 1,336 1,386 1,436 1,485 1, 535 1,584 1,634 1,678 Pounds, 5,000 ao, 000 40 000 60, 000 80, 000 100, 000 120, 000 125, 000 130, 000 135, 000 140. 000 145,000 150, 000 155, 000 160, 000 lii6, 000 169, 490 Inch. 0. . 00070 . 00150 . 00234 . 00319 . 00414 .00524 . 00554 .00586 . 00639 .00679 . 00739 . 00811 . 00912 .01100 .016 Inch. 0. . 00076 . 00074 . 00084 . 00085 . 00095 .00110 . 00030 . 00032 . 00043 . 00050 . 00060 . 00072 . 00101 . 00188 .005 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General summary. Tensile airength peraquareinch of original section ....pounds.. 169,490 Elastic limit per square inch of original section do... 130,000 Elongation perinea after rupture inch.. .010 Elcnfjation per inch under strain at elastic limit J do... .00586 Eeduction iii area after rupture, per centum of original section 41.4 Position of rupture 3". 45 outbide the gauged section Character of broken surface fijve, silky SQUARE AND FLAT STEEL WIRE. 479 No. iOOO. Mark, No. 30. Sectional area, ".0992x".0993=.0098 square inch. Gauged length, 10". Applied loads. Eldngation per inch. SnocessiTe elongation per inch. Permanent Bet. SnocessiTe permanent set. Semarks. Total. -Pta Square inch. Pounds. 49 196 392 6gg 7g4 980 1,176 1.225 1,274 1,323 1,372 1,421 1,470 1,519 1,568 1,586 Pounds. 5.000 20, 000 40, 000 60, 000 80, 000 100, 000 120, 000 125, 000 130,000 135, 000 140, 000 145,000 150, COO 155,000 160, 000 161, 810 Inch. 0. .00074 . 00156 . 00234 .00317 . 00421 .00544 .00576 . 00623 . 00678 . 00743 . 00848 . 00973 .01316 .023- Inch. - 0. .00074 . 00082 . 00078 . 00083 .00104 . 00123 .00032 . 00047 . 00055 .00065 .00105 Inch. 0. Inch. 0. Initial load. Elastic limit. TensUe strengtli. General summwry. Tensile strengtli per square inclL of original section ^ pounds.. 161,840 Elastic limit per square inch, of origijial section do... 125,000 Elongation per inch after rupture inch.. .017 Elongation per inch under strain at elastic limit do .. .00576 Keduction in area after rupture, per centum of original section 40.8 Position of rupture ".25 outside the gauged secti6n Character of broken surface ...fine, silky 80 SQUARE AND FLAT STEEL WIRE. No. 4001. Mark No. 35. Sectional area, ."0992 x ".0993=. 0098 square inch. Gauged length, 10". Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. Snooessive permanent set. Bemarks. Total. Per square inoh. Pounds. 49 196 392 588 787 980 1,176 1,225 1,274 1,323 1,372 1,421 1,470 1,519 1,568 1,617 1,666 1,715 1,754 1,816 Pounds. 5,000 20, 000 40,000 60, 000 80,000 100, 000 120, 000 125, 000 130,000 135, 000 140,000 145, 000 150,000 155, 000 160, 000 165, 000 170, 000 176, 000 180, 000 185,310 Inch. 0. .00078 . 00157 .00227 . 00302 .00387 . 00480 .00498 . 00517 .00547 . 00562 . 00598 . 00638 .00679 . 00728 . 00799 .00900 .01170 .017 Inch. 0. . 00078 . 00079 . 00070 . 00075 . 00085 . 00093 . 00018 . 00019 . 00030 .00015 . 00036 .00040 .00041 . 00051 .00071 .00101 . 00270 .0063 ■Inch. 0. Inch. 0. Initialload. Elastic limit. Tensile strength. General summary, 'ensile strength per square inoli of original section pounds . . 185, 310 Hastio limit per square incli of original section do .. 155,000 elongation per inch after rupture incli . . . 0l!5 HoDgation per incli under strain at elastic limit do... . 00679 deduction in area after rupture, per centum of original section do . . . 3i. 7 Position of rupture 4". inside the gauged section Character of broken surface fine, silky SQUARE AND FLAT STEEL WIRE. 481 No. 4002. Marks, No. 40. Sectional area, ".1002 x ".1005= Gauged length, 10". :.010 square inch. Applied loads. E-loDs;ation per inch. Sneceflsive eluiisation per inch. Permanent set. Snoeessive permaueut set. Kemarks. Total. Per square inch. Pounds. ■ 60 200 400 600 800 1,000 1,200 1,250 1,300 1,350 1,400 i, 450 1,600 1,650 1,600 1,650 1,700 1,750 1,760 Pounds. 5,000 20, 000 40, 000 60,000 80, 000 100, 000 120, 000 125, 000 130, 000 135,000 140, OOU 145, 000 160. 000 165, 000 160,000 166, 000 170, 000 175, 000 176,000 Inch. 0. .00080 . 00160 .00235 .00310 . 00410 . 00616 . 00637 .00566 . 00698 .00637 . 00679 . 00728 .00795 . 00900 . 01040 .015 .022 Inch. 0. . 00080 . 00080 .00075 . 00075 .00100 .00105 .00022 . 00028 . 00033 . 00039 . 00043 . 00049 . 00067 . 00105 . 00140 .0046 .007 Inchr 0. inch. 0. Initialload. Elastic limit. Tensile strength. . General summary. Tensile atrengtli per egnare inch of original section.. pounds.. 176,000 Elastic limit per square inch, of original section ..do... 145, 000 Clongatioxi per inch after rapture -, inch.. .Q24 elongation per inch under strain at elastic limit do... i 00679 leduction in area after rupture, per centum of original section 33. >08ition of rupture -■ - 1". 6 inside the gauged section Jharacter of broken surface.- fine silky H. Ex.165 — -31 82 SQUAEE AND FLAT STEEL WIRE. IS^O. 4003. Marks, No. 45. Sectioual area, "..0988 x ".0987= .0098 square inch. Gauged lengtb, 10". Applied loads. Elongation per inch. SuccesBive elongation per ijicli. Permanent set. Snccessive permanent set. Bemarks. Total. Per square inch. Pounds. 49 196 392 588 784 980 1,176 1,226 1,274 1,323 1,372 1, 421 1,470 1,519 1,668 1,617 1,666 1,715 1,744 Pounds. 5,000 20, 000 40, 000 60, 000 80, 000 100, 000 120, 000 125, 000 130, 000 , 135, 000 140 000 146, 000 150, 000 155, OOO 160, 000 165,000 170, 000 176, 000 177, 960 Inch. 0. . 00075 . 00150 . 00219 .00304 . 00399 .00474 . 00490 .00519 . 00540 . 00572 . 00606 . 00644 .00691 .00749 .00813 01280 .021 Imh. 0. . 00075 .00075 . 00069 . 00085 . 00095 . 00075 . 00016 . 00029 . 00021 . 00032 . 00034 . 00038 . 00060 . 00055 .00064 .00467 .0082 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General summary. ensile strength per square inch of original section pounda.. 177,960 lastic limit per square inch of origiual section do... 150, 000 longalion perincb after rupture inch.. .023 longation per inch under strain at elastic limit do... . 00614 eduction in area after rapture, per centum of original section 36.7 osition of rupture 1".75 inside the gauged section haracter of Brokeo surface fine silkj SQUARE AND FLAT STEEL WIRE. No. 4004. Marks, No. 50. Sectional area, ".0983 x ".0985 = .0097 square inch. Gauged length, 10". 483 .Applied loads. Elongation per incli. Successive elongation per inch. Permanent set. Successive permanent set. Remarks. Total. Per square inch. Poundt. 48 194 388 582 776 970 1,164 1,212 1,261 1,309 1,358 1,406 1,455 1,503 1,552 1,600 1,649 1,683 Pounds. 5,000 20,000 40,000 60, OOO 80,000 100, 000 120, 000 125, 000 130, 000 135, 000 140, 000 145,000 150, 000 155,000 160. 000 165, 000 170, 000 173,610 Inch. 0. . 00079 . 00151 . 00233 .00318 . 00423 . 00540 . 00568 .00613 . 00653 . 00687 . 00752 . 00817 . 00903 .01020 .013 .017 Inch. 0. . 00079 . 00072 .00082 .00085 . 00105 .00117 . 00028 .00035 . 00050 . 00034 . 00065 .00005 . 00086 .00117 .0018 .005 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General nummary. Tensile strength per square inch of original section ponnds.. 173,510 Elastic limit per square inch of original section do... 140,000 Elongation per inch after rupture inch.. .017 Elongation per inch under strain at elastic limit do... .00687 Seduction in area after rupture, per centum of original section 37.1 Position of rupture ..1".7 inside the gauged section Cbaracter-of broken surface fine silky 84 SQUARE AND FLAT STEEL WIEE. No. 4005. Marks, No. 55. Sectional area, ".0984 x ".0986 = .0097 square inch. Gauged length, 10". Applied loads. Successive elongation per inch. Permanent set. Successive permanent set. Bemarks. Total. Per square inch. per inch. Pounds. 48 194 388 582 776 970 1,164 1,212 1,261 1,309 1,358 1,406 1,455 1, 503 1,652 1,596 Pounds. 5,000 20, 000 40,000 60, 000 80, 000 lOO, 000 120, 000 125, 000 130, 000 135, 000 140, 000 145, 000 150, 000 155, 000 160, 000 163,920 Inch. 0. .00072 . OOUl .00221 .00302 .00392 .00495 .00518 .00543 " .00589 . 00622 . 00674 . 00761 .00898 . 01215 Inch. 0. . 00072 . 00069 . 00080 . 00081 .00090 . 00103 .00023 , 00025 . 00046 . 00033 . 00052 . 00087 . 00137 . 00317 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General summary, ensile strengtli per square inch, of original section pounds.. 163, 920 lastic limit per square inch of original section .do.-. 140, OpO longation per inch, after rupture inch.. . 008 longation per inch under strain at elastic limit do... . 00622 eduction in area after rupture, perjceutum of original section 34.0 osition of rupture ". in jaws of machine, outside gnaged section haracter of broken surface - fine silky SQUARE AND FLAT STEEL WIRE. Ko. 4006. Marks, No. 60. Sectional area, ".0992 x ".0994 = .0098 square inch. Gauged length, 10". 485 Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. Successive permanent set. Bemarks. Total. Per square inch. Poundt. 49 196 Poundt. 6,000 20, 000 4J, 000 60, 000 80,000 100, 000 120, 000 125, 000 130, 000 135, 000 140, 000 145, 000 150, 000 155, 000 160, 000 165, 000 168,060 Inch. 0. . O0082 .00164 . 00232 .00314 .00412 .00519 . 00544 .00578 . 00618 . 00668 .00728 .00828 .00969 .01262 .021 Inch. «. . 00082 .00072 . 00078 .00082 . 00098 . 00107 .00025 . 00034 .00040 . 00060 . 00060 .00100 .00141 .00293 .00838 Inch. 0. Inch. 0. Initial load. Elnstic limit Tensile strengtK. 392 588 784' 980 1,176 1,225 1,274 1,323 1,372 1,421. 1,470 1,519 1,568 1.617 1,647 General summary. iusile strength per square inch of original section pounds.. 168,060 astic limit per square inch of original section do... 135,000 ongation per inch after rupture inch... .021 ongation per inch under strain at elastic limit do... .00618 sductionin area after rupture, per centum of original section 29.5 isition of rupture 1".75 outside the gauged section laracter of broken, surface..;. ..••.....•— fine ailky 486 SQIJAEE AND FLAT STEEL WIEE. No. 4007. Marks, No. 65. Sectional area, ".0990 x ".0993 =.0098 square inch. Gauged length, 10". Applied loads. Elongation per iDCh. SucccBsive elongation per inch. Permanent Successive permanent set. Kemarks. Total. Per sqnare inch. Founds. 49 196 392 588 784 980 1,176 1,225 1,274 1, 323 1,372 1,421 1,470 1,519 1,568 1,617 1,666 1,714 Founds. 5,000 20, 000 40,000 60, 000 80, 000 100, 000 120, 000 125, 000 130, 000 ■ 135, 000 140, 000 145, 000 150, 000 155, 000 160, 000 165, 000 170, 000 174, 900 Inch. 0. . 00080 .00157 .00235 .00315 . 00405 . 00504 .00529 .00555 . 00592 . 00625 . 00665 .00713 . 00769 . 00876 .01072 .016 Inch. 0. . 00080 .00077 . 00078 .00U80 . 00090 . 00099 . 00025 . 00066 . 00037 . 00033 . 00040 . 00048 . 00056 . 00107 .00196 .00528 Inch. 0. Inch 0. Initial load. Elastic limit. Tensile strength. • General summary. Tensile strengtli per square inclL of original section pounds.. 174,900 Elastic limit per square InGh of original section do... 145,000 ElongaMou per inch after rapture ^ inch. . . 015 Elongation per inch under strain at elastic limit do... .00665 Reduction in area after rupture, per centum of original section 34.7 Position of rupture at end of gauged section Gbaraoter of broken surface .« flue silky SQUARE AND FLAT STEEL WIRE. 487 Marks, No. 70, Sectional area, ".0985 x ' Gauged length, 10". No. 4008. .0994=.0098 square Inch. Applied loads. ElongatioB per inch. Successive elongation per inch. Permanent set. Successive permanent sot. Bemarks. Total. Per squaie inch. Pownds. 49 196 392 588 784 880 1,176 1,225 1,274. 1,323 1,372 1,421 1,470 1,519 1,568 1,617 1,666 1,684 Pounds. 5,000 20,000 40,000 60, 000 80,000 100,000 120, 000 125,000 130, 000 135,000 140, OOO 145, 000 150, 000 155, 000 160, OOO 165, 000 170, 000 171,840 Inch. 0. . 00078 .00148 . 00218 . 00298 . 00380 .00468 . 00488 .00513 . 00S38 . 00568 .00603 .00641 .00710 .00851 .01535 .026 Inch. 0. . 00078 . 00070 . 00070 . 00080 . 00082 . 000H8 .0jO20 .00025 . 00025 .00030 .00035 .00038 .00069 . 00141 .00684 .01065 Inch. 0. Inch. 0. Initial load- Elastic limit. Tensile strength. , General summary. Tensile strength per square inch of orisiDal section pounds.. 171,840 Elastic limit per square inch of origioal section .do... 150,000 Elongation per inch after rnpture inch... .018 Elonf^ation per inch under strain at elastic limit do . . . . 00641 Keduction in area after rupture, per centum of original section 37, 8 Position of rupture 1".87 outside the ganged section Character of broken surface , fine silky 488 SQUARE AND FLAT STEEL WIRE. No. 4009. Marks, No. 75. Sectional area, ".0990 x ".0986 = .0098 square inch. Gauged length, 10". Applle Total. d loads. Per square inch. Elongation per inch. Sncceasive elongation per inch. Permanent set. Succe-'siTe permanent Slit. Eemarka. Pounds. 49 196 392 588 784 980 1, 176 1,225 1,274 1, 323 1,372 1,421 -. 1, 470 1,519 1,668 1,817 1,666 1,715 1,764 1,790 Pounds, .5, 000 20, 000 40, 000 60, 000 80. 000 100, 000 120, 000 126, 000 130, OJO 135, 000 140, 000 145, 000 150, 000 155, 000 100, 000 165, 000 170, UOO 175, 000 180, 000 182, 650 Inch, 0. .00080 . 00157 .00234 . 00321 .00108 . 00508 .00528 . 00651 . 00588 . 00618 . 00658 , 00C93 . 00750 .00816 .00896 . 01047 .016 .021 Inch, 0. . 00080 . 00077 . 00077 . 00087 . 00087 .00100 ,00020 . 00023 . 00027 . 00030 . 00010 . 00035 . 00057 . 011065 .00081 .00151 . 00553 .005 l7ich. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General summary. Tensile strength per square inch of Original section pounds. . 182,650 Elastic limit per square inch of original section — * do.., 150, 000 Elongation per inch after rapture , inch.. .020 Elongation per inch under strain at elastic limit do... .00693- KeductloD i^ area after rupture, per centum of original section - 37. 8, Position of rupture : 3 ".25 inside the gauged section Character of broken surface fine silky "SQUARE AND FLAT STEEL WIEE. No. 4010, Marks, No. 80. Sectional area, ".0990 x ".0993 = .0098 square inch. Gauged length, 10". 489 Applied loads. mion^atiou per liioh. Sacceseive elongation per moh. Permanent set. SacceasiTO permanent set. Kemarks. Total. Per sqaare inch. Founds. 49 196 392 588 ' 784 980 1,176 1,225 1,274 1,323 1,372 1,421 1,470 1,519 1,568 1,017 1, 666 1,715 1,746 Founds. 5,000 20, 000 40, 000 60, 000 80, 000 IOC, ooe 120, 000 125,000 130, 000 135, 000 140, 000 145, 000 150,000 155, 000 160, 000 165, 000 170, 000 175, 000 178,260 Inch. 0. .00082 .00162 . 00240 . 00330 . 00424 . 00628 . 00552 . 00587 . 00622 . 00660 . 00708 .00768 . 00831 . 00922 .01082 .016 .021 Inch. 0. .00082 . 00080 .00078 . 00090 .00094 .00104 .00024 . 00035 .00035 . 00038 .00048 . 000,50 . 00073 . 00091 .00160 .00518 .005 Inch. ■ 0. Inch, 0. Initial load. Elastic limit. Tensile strengtb. Gmieral summary. Tensile strengtb per square inct of original section ponnds-. 178,260 Elastic limit per square inch of original section t do . . 140, 000 Elongation per iiicb. after rupture inch . . 0. 016 Elongation per inch under strain at elastic limit ' do. . . . 00660 Kodnction in area after rupture, per centum of original section ' 36. 7 rositioD of rupture 2". 25 outside the ganged section Character of broken surface fineHilky 490 SQUARE AND FLAT STEEL WIKE. No. 4011. Marts No 85 Sectional area, ".0995 x ".0992 = .0099 square inch. Gauged length, 10". Applied loade. Elongation per inch. Siicoeasive elongation per inch. Permanent set. Snccessive permanent set. Eomarks. Total. Per square inoh. Founds. 49 198 396 694 792 990 1,188 1,237 1,287 1,336 1,386 1,436 1,485 1,635 1,584 1,634 1,683 1,732 Founds. 5,000 20, 000 40, 000 60, 000 80,000 ■ 100, 000 120, 000 125, 000 130, 000 135, 000 140, 000 146,-000 150, 000 155, 000 160, 000 165, 000 170, 000 174,950 TncTi. 0. .00078 .00158 . 00240 . 00315 . 00399 . 00488 .00510 .00540 . 00567 . 00592 . 00628 . O0667 V . 0S717 .00774 . . 00872 .01111 .022 Inch. o: . 00078 . 00080 .00082 . 00075 .00084 .00089 .00022 . 00030 .00027 . 00025 . OC030 . 00039 . 00050 . 00057 . 00098 .00200 . 01059 Inch. Inch.' Initial load. Elastic limit. Tensile strength. i General summary* Tensile strengtTi peraquare inch of orig:inal section. pounds.. 174, 9">0 Elastic limit per square inch of original section do... 150,0 JClongation per inch after rupture :. inch.. . 01 1- ■ Elongation per inch under strain at elastic limit - do... .00667 Keduction in ar.a after rupture, per centum of original section 43.4 Position of rupture 4".25 outside the gauged section Character of broken surface fine silky SQUARE AND PLAT STEEL WIRE. 491 No. 4012. Marks, No. 90. Sectional area, ".0982 x ".0983 = .0096 square inch. Ganged length, 10". Applied loads. Elongatiou per inch. Saooessive elongation per inch. Permanent set. Suooessive 'permanent set. Bern arks. Total. Per sgnare incti. Fmmds. 48 192 384 676 768 960 1,152 1,200 1,248 1,296 1,344 1,392 1,440 1,488 1,536 1,584 1,632 1,660 - Foundt. 5,000 20, 000 40,000 60,000 80,000 100, 000 120, 000 125, 000 130, 000 135, 000 140,000 145, 000 160, 000 155, 000 160, OOO 165, 000 170, 000 171, 875 Inch. 0. . 00072 .00142 . 00220 .00300 . 00387 .00490 . 00510 . 00546 . 00590 . 00626 . 00673 .00740 . 00820 . 00992 .01244 .027 Inch. 0; . 00072 . 00070 .00078 . 00080 . 00087 .00103 .00020 . 00036 .00044 . 00035 . 00048 . 00067 . 00080 . 00172 . 00252 .01456 Inch. 0. Inch. 0. Initialload. Elastic limit Tensile strength. General summary, Teii8ile strength per square inch of original section pounds.. 171,875 Elastic limit per square inch of original section : do... 140,000 Elongation per inch after rupture inch. . . 023 Elongation per inch under strain at elastic limit do... .00625 Beduction in area after rupture, per centum of original section 33.3 Position of rapture ".07 inside the gauged section ChaiacteF of broken surface fine silky 492 SQUARE AND FLAT STEEL WIRE. No. 4013. Marks, No, 100. Sectional area, ".0986 x ".0993 = .0098 square inch. Gauged length, 10". Applied loads. Elon^tion per inch. Successive elODgation per inch. Permanent set. Saccos.sive permanent set. Eemarks. Total. Per sqnare incD. Pounds. 49 196 392 588 784 980 1,176 1,225 1,274 1,323 1,372 1,421 1,470 1,519 1,508 1,617 1,651 Pov-nds. 6,000 20, 000 40, 000 60, 000 80, 000 100, 000 120, 000 125, 000 130, 000 136, 000 140, 000 145, 000 150, 000 155, 000 160, 000 165, 000 168,470 iTUih. 0. . 00080 . 00159 .00234 . 00314 .00397 . 00493 .00517 .00549 . 00580 . 00615 . 00675 . 00725 .00815 . 01251 .023 Inch. 0. . 00080 . 00079 . 00075 . 00080 . 00083 . 00096 . 00024 . 00032 . 00031 . 00035 . 00060 . 00050 . 00120 .00406 .01049 Inch. 0. ' Inch. 0. Initial load. Elastic limit. Tensile strength. General summary. Tensile strength per eqtiare inch of original section pounds,. 168,470 Klatitlc limit per square inch of original section , do. .. 140,000 Elougation per inch after rapture inch . , . 020 Elongation per inch under strain at elastic limit do... .00615 Keductionin area after rapture, per centum of original section 31. 6 Foditionof ruptnfe 4". 65 outside the gauged section Character of broken surface r fine silky SQUARE AND FLAT STEEL WIKE. 493 No. 4014. Marks, No. 110. Sectional area, ".0988 x ".0990 = .0098 square inch. Gauged length, 10". . Applied loads. Elongation per inch. Successive elongation per inch. Permanent set.. Successive permanent set. Kemarks. Total Per square inob. Pounds. 49 196 392 588 784 980 1,176 1, 2;5 1,2?4 1,323 1,372 1,421 1,470 1,519 1,568 1,617 1,666 1,682 Founds. 5,000 20, 000 40, 000 60, 000 8j, 000 100, 000 120, 000 123, 000 130. 000 136, 000 140, 000 145, 000 150, 000 155,000 160, 000 165, 000 170, 000 171, 630 Inch. 0. , .00068 . 00148 . 00218 . 00293 .00379 -. 00178 .00496 . 00520 .00551 . 00588 . 00628 . 00673 . 00755 . 00860 .01183 .027 Inch. 0. .00068 . 00080 . 00070 .00075 .00086 . 00099 .00018 . 00024 .00031 . 00037 \ 00040 . . 00045 . 00082 . 00105 .00323 . 01517 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strengtli. General summary. Tensile strengtb per square inch of original section pounds.. 171,630 Elastic limit per square inch of origlaal section - .do--. 145,000 Elongation per inch after rupture ..inch-. .029 Elongation per inch under strain at elastic limit ,. -do... .00628 Beduction in area" after rupture, per centum of original section 40. 8 Position of rupture 3".75 inside the gauged section Character of broken surface * fine silky 494 SQUARE AND PLAT STEEL WIRE. No. 4015. Marks, No. 125; Sectional area, ".0994 x ".0994 : Gauged length, 10". .0099 square incli. Applied loads. EloDSation per inch. Suocesaive eloDffation per inch. Permanent Bet. Snccessive permanent set. Kemarks. Total. Per square inch. Poundu. 49 198 396 594 792 990 1,188 1,237 1,287 1,336 1,386 1,436 1,486 1,535 1,584 1,628 Pounds. 5,000 20, 000 40, 000 60, 000 80, 000 100, 000 120, 000 125, 000 130, 000 135, 000 140, 000 145, 000 150,000 155,000 ' 160, 000 164, 440 Inch. 0. . 00072 .00144 .00329 . 00309 . 00302 . 00493 . 00512 . 00542 . 00574 .00015 . 00069 . 00722 . 00830 .01154 Inch. 0. . O0O72 . 00072 . C0085 . 00080 . 00083 .00101 .00019 . 00030 . 00032 . 00041 . 00044 . 00063 ,00108 . 00334 Inch. 0. Inch. 0. Initialload. Elasticlimit. Tensije strength. General summary. Tensile strength per square inch of original section. pounds.. 164,440 Elasticlimit per square inch of original section :ation per inch und^r strain at elastic limit >. do... .00713 Seduction in area after rupture, per centum of original section 48.5 Position of rupture 2".8 inside the gauged section Character of broken surface ifiiie silky 496 SQUARE AND FLAT STEEL WIRE. No. 4017. Marks, "No. 135. Sectional area, ".0986 x ".0984 = .0097 square inch. Gauged length, 10". Applied loads. liIlODgat^on per inch. Saccessive elongation per inch. Permanent set. Successive permanent set. Itemarks. Total. Per sqaare inch. Pounds. 48 194 388 582 776 970 1,164 1,212 1,261 1,309 1,358 1,406 1,455 1,603 1,552 1,600 1,649 1,697 1,742 Pounds. 5,000 20, 000 40, 000 60, 000 80, 000 100, 000 120, 000 125, 000 130, 000 135, 000 140, 000 145, 000 150, 000 155, 000 160, 000 165, 000 170, 000 175,000 179,590 Inch. 0. .00078 .00155 .00231 .00322 . 00417 .005)7 . 00538 .00560 . 00603 .00638 .00078 . 00715 .00778 . 00845 .00932 .01078 .016 Inch. 0. .00078 . 00077 . 00076 .00091 . 00095 . 00100 . 00021 . 00022 . 00043 .00035 .00040 .00037 . 00063 . 00067 .00087 .00146 . 00522 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. ^ General summary. Tensile strength per square inch of original section pounds.. 179,590 Elastic limit per square inch of original section do... 150, 000 Elongation per inch after rupture inch.. .020 Elongation per inch under strain at elastic limit do... .00715 Keductionin area after rupture, per cenium of original section 32.0 Position of rupture ; 4". 15 inside the ganged section Character of broken surface finesUky SQUARE AND FLAT STEEL WIEE. 497 Marks, No. 140. Sectional area, ".0:)7Gx' Gauged leugtli, 10". No. 4018. '.0985=. 0090 square inch. Applied loads. Elpngation per inch. Successive elongation per inch. Permanent set. Successive permanent set. * Eoniaiks. Total. Per square inch. Pounds. 4rt 102 384 576 768 960 1, 15-J 1, 2O0 1,248 1,296 1,314 1;393 1,440 1,488 1,530 1, .584 1,616 Pounds. 5,(jOO ■ 20, 000 40, 000 60, OOO 80, 000 ;oo, 000 120, 000 125, OUO 130, 000 135, 000 140, 000 146, 000 150,000 155, 000 160, 000 165,000 168,330 , Inch. 0. . 00071 . 00163 . 00260 .00328 .00418 .00523 .00612 . 00577 . 00608 .00648 . 00688 .00758 . OO840 .00970 . 01368 Inch. 0. . 00071 . 00092 . 00087 .00078 . OOOOO .00103 . 00019 . 00036 . 00031 . 00040 . 00040 . 00070 . 00082 .00130 . 00398 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. _ General summary. Tensile strength per square inch of orii^inal section pounds.. 168,330 Elastic limit, per square inch of originill section do. .. 145, 000 Elongation .per inch after rupture.-.. ^i - inch.. .O'ia Klon^atiou per iacb iinder strain at elastic limit ' do .. . 00688 Heduutlonin apea after rupture, per centum of original section ,- - 33.3 Position of rupture 3". 5 inside of gauged section (Jhai actor of bioken surface , .fine,aUky H. Ex. 165 32 498 SQUARE AND FLAT STEEL WIRE. No. 4019. Marks, No. 145. Seotipual area, ".0986 X ".0987 =.0097 square inch. Gauged length, 10". Applied loads. Elongation per inch. Successive elonstation per inch. Permanent set. Successive permanent set. Kemarks. Total. Per square incli. Pounds. 48 194 388 982 776 970 1,164 1,212 1,261 1,309 1,358 1, 40i 1,455 1, 503 1,652 1,600 1,649 1,697 1,738 Pounds. 5,000 20, 000 40, 000 60, 000 80, 000 100, OOO 120,000 125, 000 130,000 135, 000 140, 000 145, 000 150, 000 165, 000 160, 000 165,000 170, 000 176, 000 179,180 Inch. 0. . 00085 . 00157 .00238 . 00320 .00410 . 00503 .00528 ' . 001550 . 00.582 .00817 . 006S3 . 00702 . 00765 .00823 .00940 .01140 .017 Inch. 0. . 00085 . 0(1072 .00081 . 00082 .00090 .00093 . 00025 .00022 . 00032 .00035 . 00046 .00039 . 00063 .00058 .00117 .00200 .00560 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General summary. pensile strength per square inob, of original section.-. pounds. . 179,180 Elastic limit per square inch of original section , do -. 150,000 Elongation per inch after rupture inch.. .025 Elongation per inch under strain at elastic limit do... .00702 Beduction in area after rapture, per centum of original section 42.3 Position of rupture 2".l Inside the gauged section Character of broken surface r. * ,.,.,...,,...., ,....fine,8Uky SQUARE AND FLAT STEEL WIKE. No. 4020. Marks, No. 150. Sectional area, ".0987 x ."0986=."0097 square iueh^ Gauged length, 10". 499 Applied loads. Successive eloii;;atiou per inch. Permanent sot. Successive periuaneat set. Keuiarlcs. Total. Per square inob. per inch. Pound*. 48 194 388 582 776 970 1,164 1,212 1,261 1,309 1,358 1,406 1,455 1,603 1, .552 1,600 1,649 1,683 Pounds. 6,000 20, 000 40, 000 60, 000 80,000 100. 000 120, 000 125, 000 130, 000 135, 000 140, 000 146. 000 150, 000. 155, ooa 160, om 165, 000 170, 000 173, 400 Inch. 0. .00080 .00152 . 00233 . 00315 .00413 .00516 .00545 .00.576 .00013 .006 G .00718 .00775 . 00873 .01037 ' .013 .033 Inch. 0. . 00080 . 00073 . 03081 .00083 . 00098 . 00103 . . 00029 .011031 . 00037 . (I0U13 . 03063 . 00057 . 00098 . 001B4 . 002U3 .010 Inch. 0. Inch. 0. Initial load. Elastic limit. TeDdile strength. General summary. Tensile strength per square inch of original section , ponnds.. 173,400 Elastic limit per square inch of original section do... '135,000 Elongation per inch after rupture inch.. 0.020 Elongation per inch uH,der strain at oliistic limit do... .00613 Beduction in area after vupture, per ceutum of original section 40.2 Position of rupture 2". 5 inside the gauged section Character of broktru surface finesilkil 500 SQUARE AND FLAT STEEL WIRE. No. 4021. Marks, No. 156. Sectional area, ".0990x".0990=.0098 square inch. Gauged length, \10". Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. Successive permanent set. Kemarks. Total. Per square ■ inch. Poundft. 49 190 392 688 784 980 1,176 1,225 1,274 1,323 1,372 1,421 1,470 1,610 1,568 ],617 1,666 1,715 1,746 Founds. 5,000 20, 000 40, 000 6(1, 000 80, 000 100, 000 120, 000 125, 000 130, 000 IS.'i, 000 140, 000 US, 000 160, 000 165, 000 160, 000 165, 000 170, 000 175, 000 178, 160 Inch. 0. .00078 .00168 . 00247 . 00330 . 00428 . 00533 . 00552 . 00691 .00628 . 00607 . 00717 . 00772 . 00845 . 00933 .01088 .014 .020 Inch. 0. . 00078 . 00090 . 00079 ,00083 . 00098 . 00105 . 00019 .00039 .00037 . 00039 . OOJ.iO . OOO.-iS , 00073 . OOOiiS . 00155 .00312 .006 Inch. 0. Inch. 0. Initial load. Elastic limit • Tensile strength. 1 Gowal summary. Tensile strengtb per square incli of original section pounfls-. 178, 160 Klasliclimit per square iuch of original section do .. 140, 000 Klougation per iucU after i-apturu iuuh.. . 026 Elongation per inuli under strain at elastic limit do... . 00667 ^Keduction iu area after rupture, per centum of original section 37.8 Position of rupture 2". 75 inside the gauged section Character of broken surface fine silky SQUARE AND FLAT STEEL WIEE. 601 No. 402^. Marks, No. 1,05. Sectional 'area, ".0983x".0986=.0097 square iuch. Gauged length, 10". Applied loads. Elongation per IiicIl. Successive elODgatiuD per iuch. Permanent set. Successive pei'maneut sec. Iteraarks. Total. Per square inch. Pounds. 48 194 388 582 776 970 1,164 1,212 1,261 1,309 1,358 1,406 1,455 1,503 1,552 1,594 Pounds. 5,(ioo 20, 000 40, 000 60,000 80, 000 100.000 120, 000 125, 000 130, 000 135, 000 140, 000 145, 000 150; 000 155. 000 160, 000 164, 330 Inch. 0. . 00079 .0.0155 . 00234 . 00312 . 00333 .00470 . 00497 . 00528 . 00557 . 00591 . 00634 . 00678 .00778 . 01003 Tnch. 0. .00079 , 00076 .00U79 . 00078 . 00021 . 00137 .00027 . 00031 . 00029 . 00034 . 00043 . 00044 .00100 . 00225 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. ■• General summary. Tensile strength per flqnare inch of original section -..pounds,. 164,330 Elastic limit per square inch of original section do... 140,000 Elongation per iuch after rupture inch-. .007 .KKjingatio^ ^er iuch under strain at elastic limit ...^.. ..\ do... .00591 Reduction in area after rupture, per centum of original section 40.2 ^Po8itionof rupture in jaws of machine outside gauged section Character of broken sarface iine silky 502 SQUARE AND FLAT STEEL WIRE. 1^0. 4023. Marks, No. 170, Sectional area, ".098Gx ".0987 =.0097 square inch. Gauged length, 10". Applied loads. Elongalion per Inch. Siiocessive elongation per inch. Permauent set. Sacoessive peimanent set. Kemarks. Total. Per square incb. Founds. 48 194 388 582 776 970 1,164 1,212 1,261 1,309 1,358 1,406 1,455 1,503 1,552 1,600 1,649 1,697 1,718 Pounds. 5,000 20,000 40,000 60,000 80, 000 100, 000 120, 000 125, 000 130, 000 135, 000 140, 000 145, 000 150, 000 15.'), 000 160,000 165, 000 170, 000 175, 000 177, 110 Inch. ^ 0. . 00079 .00162 . 00247 . 00327 .00410 . 0U503 . 00630 . 00553 . 005S7 .00617 .00650 . 00703 . 00750 . 00813 . 00811 . 01095 .018 Inch. 0. .00079 . 00083 . 00085 . OOOfcO . 00083 . 00093 . 00027 .00023 . 00034 . 00030 .00033 . 00032 . 00048 . oouiia .00098 .00184 . 00705 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. ■ General summary. Tensile strength per square inch of original section pounds.. 177, 110 iElastic limit per square inch of original section .". rJo .. 145.000 Elungation per inch alter rnpture inch.. ^010' Elongation per inxAi under strain at elastic limit do... .00650 Kednction in area after roptore, per centum of original scotiou 40.2 Position of rapture 3". 5 outside the ganged section Character of hroken surface .^ tine silky SQUARE AND PLAT STEEL WIRE. 503 No. 4024. Marks, No. 175. Sectional area, "0984x".0985=.0097 square inch. Gauged length, 10". Applied loads. Elongation per inch. Snccesslve elongation per inch. Permanent set. Successive permanent set. Hemarka. Total. Per square inon. Pounds. 48 191 388 882 776 970 1,164 1,21S 1,261 1,309 1,368 1,106 1,455 1,503 1,552 1,600 1,619 1,697 1,700 Pounds. 5,000 20, 000 10. 000 60,000 80, 000 100. 000 120,000 126, 000 130, 000 135,000 140, 000 115, 000 150, 000 155,000 160, 00(1 165,000 170, 000 175, 000 175,260 Inch. 0. , . 00077 .00155 . 00235 .09315 . 00113 .00513 .00540 .00570 .00609 . 00645 .00,693 . 00717 . 00813 .00915 . 01067 .016 .028 Inch. 0. .00077 . 00078 .00080 ,00080 .00098 . 00100 .00027 . .00030 .00039 .00036 .00018 .00061 .00066 .00102 . 00152 .00533 .012 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. ' General summary. Tensile strength per square inch of original section pounds.. 175,260 Elasticlirait per square inch of original section do... 110,000 Elongation per inch after rupture , -, inch.. .011 Elongation per inch under strain at elastic limit do... .00615 Keduotion in area after rupture, per centum of original section .^ 37. 1 Position of rapture 6".2 outside of the ganged section Character of Droken snrface fine sUIcy ' 504 SQUAEE AND FLAT STEEL, WIRE. No. 4025. Marks, No. 180. Sectional area, ".0986 x ".0988 =.0097 square inch. Ganged length, 10". Applied loads. Elongation per inch. SnccessiTe elongation per inch. Permanent set. Successive permanent set. Bemarks. Total. Per square inch. Pounds. 48 194 388 582 776 970 1,164 1,212 1,261 1,309 1,358 1,406 1,465 1, 503 1,552 1,600 1.6(9 1,698 Pounds. 5,000 20, 000 40, 000 60, 000 80,000 100, 000 120, 000 125, 000 130, 000 136, 000 140, 000 145,000 150, 000 155,000 160,000 165, 000 170, 000 174,850 Inch. 0- .00087 .00159 .00238 . 00316 . 00408 .00497 .00518 . 00547 .00577 . 00617 .00652 . 00698 . 00752 . 00837 .01008 .017 Inch. 0. .00087 . 00072 .00079 . 00078 . 00092 . 00089 .00021 . 00029 . 00030 . 00040 .00035 . 00046 .00054 .00085 . 00171 . 00Q92 Inch. 0. Inch. 0. Initial load. Elastic limit. Ten sire strength. Genei'dl summary, Tenaile strength per sqnareinch of orieinal sectioD ,., ponndg.. 174,850 Blastic limit per square inch of original section do... 145,000 Elongation per inch after rupture inch.. .022 Elongation per inch nnder strain at elastic limit do... .00652 Eeduction in area after rupture, per centnm of original section 39. 2 Position of rnpture .r ".55 inside the.gauged section Character of broken surface fine silky BQUAEE AND FLAT STEEL WIRE. No. 4026. 505 Marks, No. 185. Sectional area, ".0984x".0988=.0097 square inch. Gauged length, 10". Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. Successive permanent set. Ecmarks. Total. Per-sqnare incli. . Pounds. 48 . ^ 194 388 582 776 970 1, 164 1,212 1,261 1,309 1,358 1,406 1,455 1,503 1,553 1, 600 1,649 1,694 Pounds. 5 000 20; 000 40, 000 60, 000 80, 000 100,000 120, 000 125, 000 130, 000 135, QUO 140, 000 145, 000 150, 000 155, 000 160, 000 165, 000 170, 000 174, 640 Inch. 0. . 00082 . 00165 .00-247 . 00331 .00422 . 00523 .OOfiii . 00577 .00618 . 00658 . 00708 . 00772 .00862 . OlOOJ .Oil .020 Inch. 0. .00082 . 00083 " .00,082 . 001084 .00091 .00101 . 00024 . 00(130 .00041 . 00040 .00050 . 00064 . OOOBO . 00140 . 00098 .009 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. ' General summarif. Tensile strengtli per square inch of original section pounds.. 174,640 Elastic limit per square inch of original section '.do .. 140, UOq Elongation per inch after ruptnre inch.. . 0'J4 Eloiigatiou per inch under ntrain at elastic limit do.,. .00058 Reduction in fl-rea after rupture, per centum of original section 40,2 I'osition of rupture '. 2". 8 inside the gauged section Character of broken surface - fine silky 506 SQUARE AND FLAT STEEL WIRE. No. 4037. Marks, No. 190. Sectional area, ".0987 x ".0984=.0097 square inch. Gauged length, 10". Applied loads. Elongation per incli. Saccesslye elongation per inch. Permanent set. Successive permanent set. !Remarks. Total. Per square inch. Pounds. 48 194 388 582 776 970 1,164 1,212 1,261 1,309 1,358 1,400 1,445 1,503 1,552 1,576 Pounds. 5,000 20, 000 40, 000 60,000 80, 000 100, 000 120, 000 125,000 130, 000 136, 000 140,000 145, 000 150, 000 155, 000 160, 000 162,470 Inch. 0. . 00080 . 00158 .00238 . 00338 . 00440 . 00580 .00613 . 00660' .00733 .00798 . 00925 . 01010 .013 .018 Inch. 0. -.00080 . 00078 .00080 .00100 .00102 .00140 .00033 . 00047 . 00073 .00065 . 00127 .00115 . U0260 .005 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. Genei'al summary. Tensile giren^th per square incli of original section ..^ pounds.. 162,470 Elastic limit per square inch of orig:inal section .., do... 125,000 Elongation per incb after nxpture inch.. .012- Elongation per.inoh under strain at elastic limit do... .00613 Ketlnction in area after rupture, per centum of original section 39.2 Position of rupture.. 2".95 outside the gauged section Gharaoture bf broken surface ....tine silky SQUAEE AND FL'AT STEEL WIRE. Ko, 4028, Mar^ No. 200. SectiKial area, ".0990 x ".0992 = .0098 square inch. Gauged length, 10". 507 Applied loads. EloDgation per icchr Successive elongation per inob. Permanent set. Successive permanent set. Hemarka. Total. Per square inch. Pound). 49 296 392 588 784 980 1,176 1,226 1,274 1,323 1,372 1,421 1,470 1,519 1,568 1,617 1,660 Pound). 5,000 20,000 40,000 60,000 80, 000 100, 000 120,000 125, 000 130,000 - 135, 000 140, 000 145,000 150, 000 155, 000 160,000 165, 000 169,390 Inch. 0. .00073 .00156 .00233 .00326 . 00428 .00548 . 00578 .00bl8 . 00667 .00713 . 00777 .00837 . 00952 .01105 .016 Inch. 0. .00073 .00083 .00077 . 00093 . 00102 .00120 . 00030 .00040 . 00049 .00046 . 00064 . O0060 .00115 .00153 .00495 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. .- General summary. Xenaile strenfrth per square inch of original section pOBDcls.. 169,390 Elastic limit per square inch of original section do... 130, 000 Elongation per iifch after rapture inch.. .010 Elongation per inch under strain at elastic limit do... .00618 Bednction in area after rnptare, per centum of original section 42.9 Position of rapture ^ 6". 35 outside the gauged section Character of broken sorface fine silky 508 SQUARE AND FLAT STEEL WIRE. No. 4029. Marks, No. 206. Sectional area, ".0991x".0993=.0098 square inch. G-auged length, 10". Applied loads. Elou^ation per luoh. Sucopssive' elul);:atiou per iucb. Permanent set. Sncces.sive permanent set. Bemarks. Total Per Bquare inch. Pounds. 49 196 392 588 784 980 1,176 1,225 1,274 1,323 1,372 1,421 1,470 1,519 1,568 1,617 1,666 1,715 1,764 1,813 1,832 Pounds. 5,000 20, 000 40, 000 60, 000 80, 000 100, 000 120, 000 125, 000 130, 000 135, 000 140, 000 146, 000 ' 150, 000 155, 000 160, 000 165, 000 170, 000 175, 000 180, 000 185, 000 186, 940 Inch. 0. .00078 . 00150 .00213 . 00308 . 00391 . 00180 . 00502 . 00529 . 00557 . 00584 . 00618 . 00650 . 00692 . 00728 . 00789 . 00862 . 0099C . 01240 .021 Inch. 0. . 00078 . 00072 . 00063 . 00095 . 00083 . 00089 . 00022 . 00027 . 00028 . 00027 . 00034 . 00032 . 00042 . 00036 . 00061 .000(3 .00128 . 00250 . 00860 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General summary, TeBsile strengtli per square inch, of original section pounds . . Ifi6, 940 Elastic limit per square incli of original section ,, do... ]00. i Elongation per inch after rupture inch.. .020 Elongation per inch under strain at elastic limit... do... .00728 Beduclion in area after rupture, per centum of original section 40, 8 Position of rupture ",7 inside the gauged sectiou Character of broken surface '. fine silky SQUARE AND FLAT STEEL WIRE. iTo. 4030. Marks, No. 210. Sectional area, ".0984 x ".0985 =.0097 square inch. Ganged length, 10". 609 Applied loads. Elongation per inch. Successive eloDKation per inch. PerraaneDt set. Successive puriuanent set. Kern arks. Total. Per square incb. Pounds. 48 194 388 582 776 970 1,164 1,212 1,261 1,309 1,358 1,406 1,455 1,503 1,652 1,600 1,649 1,692 Poundfi. 5,000 20, 000 40, 000 60, 000 80, 000 100, 000 120, 000 125, 000 130, 000 135, 000 140, 000 145. 000 150,000 156, 000 160, 000 165, 000 170, 000 174, 430 Inch. 0. .00081 .00151 . 00230 .003)2 . 00398 .00409 . 00521 . 00549 . 00586 .00625 . 00670 .00720 . 00790 .00877 . 01082 .016 Ineh. 0. . 00081 . 00070 . O0O79 .00082 , 00086 .00101 . 00022 . 00028 • . 00037 .00039 .00045 .00050 .00070 .00087 .00205 .00518 Inch. 0. Inch. Initial load. Elastic limit. TcDfiile strengtli. ' • General summary. Tensile strength per squareincli of original section pounds.. 174,430 Elastic limit per square inch of original section '. do... 140, OOTT Elongation periach after rupture inch.. ,007 Elongation per inch under strain at elastic limit do... .00625 Keductiou in a^ea after rupture, per centum of original section ' 37.1 Position of rupture 5".25 outside the ganged section Character of broken surface^ fine silky 510 SQUAEE AND FLAT STEEL WIRE. Marks, No. 215. Sectional area, ".0984 x Gauged length, 10". No. 4031. '.0988 = .0097 square inch. Applied loads. Successive elongation pui- iucb. Permanent set. Successive permanent set. Bemaiks. , Total. Per aqnare inch. per inch. Poundn. 48 194 388 582 776 970 1,134 1,212 1,261 1,309 1,358 1,406 1,455 1,503 1,552 1,600 1,618 Founds. 5,000 20,000 40; 000 60, 000 80,' 000 100, 000 120, 000 125, 000 130, 000 135, 000 140, 000 145, 000 150, 000 155, 000 160,000 165, 000 166, 800 Inch. 0. .00080 : 00157 .00240 .00330 .00430 .00567 . 00590 .00635 . 00680 . 00742 . 00818 .00918 . 01060 .016 .021 Inch. 0.. . 00080 - . 00077 .00083 . 00090 ,. 00100 .00137 .00023 " . 00045 ^ . O0O45 .00062 . 00076 .00100 .00142 .00540 .005 inch. 0. - Inch. 0. Initial load. • Elastic limit. Tensile strength. - ' Genei'al summary. Tensile strengtli per square inch of original section ponnds.. 166,800- Elasticliinit per square inch of original section do... 125,000 iCIongation per iucii after ruptnre inch.. . . 013 Elongation per inch under strain at elastic limit do... .00590 Keduution in area after rupture, per centum of original section 37. 1 Position of rupture , 1".35 outside the gauged section Character of broken surface ^.. fine silky SQUARE AND FLAT STEEL WIRE. 511 No. 4032. Marks, No. 220. Sectional area, ".0990 x ".0993=. 0098 square inch. Gauged length, 10". Aptilied loads- Elongation per inch. Snocessive elongation per inch. Permanent set. Saoceseive nerraanent set. Kemarks. Total. Per square incu. Pounds. 49 196 392 588 784 080 1,176 1,226 1,274 1,323 . 1,372 1,421 1,470 1,619 1,568 1,617 1,666 1,715 1,764 1,813 1,837 Pounds. S,000 20,000 40, 000 60, 000 80, 000 100, 000 120,000 125, 000 130, 000 136, 000 140, 000 145,000 150, 000 165, 000 180,000 165,000 170,000 175, 000 180, 000 185,000 187,450 Inch. 0. .00073 .00160 '.00231 .00318 , .00408 .00602 . 00528 ' .00564 -. 00684 . 00618 .00661 .00692 .00737 . 00788 . 00863 .00958 . 01132 .016 .024 Inch. 0. .00073 .00077 .00081 . 00087 .00090 ' . 00094 .00026 . 00026 . 00030 . 00034 . 00033 .00041 ' .00046 .00051 . 00065 . 00105 . 00174 . 00468 .008 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. . General Bummary. Tensile strength per square inch of original section -. pounds . . 187, 460 Elastic limit per square inch of original section do... 150,000 Elongation per inch after rupture. inch.. .024 Elongation per inch under strain at elastic limit .do... .00692 Beduction in area lifter rupture, per centum of original section 36. 7 Position of rupture 2".6 inside the gauged section Charaotet of broken surface toe silky 512 SQUARE AND FLAT STEEL WIRE, No. 4033. Marks, No. 225. Sectional area, ".0986x".0985=.0097 square inch. Gauged leugtb, 10". Applied loads. Elongation per iuch. Successive elongation per inch. Permanent set. Successive permfincnt set. Kemarks. Total. Per square inch. Pounds. 48 194 388 582 776 970 1,104 1,212- 1,261 1,309 1,358 r,406 1,455 1,503 1, 552 1,600 1,649 1,697 1,746 Pounds. 6, 000 20, 000 40, 000 60, 000 80. 000 100, 000 120, 000 125, 000 130, 000 135, 000 140,000 14.-I, 000 ■ 1.50,000 156, 000 100, 000 165, 000 170, 000 175, OOO 180, 000 Inch. 0. . 00071 . 00155 . 00227 . 00307 . 00394 .00476 . 00495 . 00517 . 00540 .00565 . 00599 . 00629 . 00665 . 00717 . 00795 .00915 "' . 01168 .031 Inch. 0. . 00071 . 00084 . 00072 . 00080 . 00087 .00081 . 00020 . 00022 . 00023 . 00025 . 00034 . 000?0 . 00036 . 00053 . 00078 . 00120 . 00263 . 01933 Inch. 0. Inch. ■ 0. Initial load. Elastic limit. Tensile strength. - General summary. Tensile strengtli per square inch of original section pbunrts.. 180,000 Elastic limit per aquaro inch of original section 1 do .. 155,000 Elougation per inch after rupture iucli.. .028 Elungaiion per inch under strain at elastic limit do . . . . 00605 Eeductiun in area after rupture, per centum of original section 36.1 Position of rupture 3''. 65 inside the gangrd section Churacter of broken surfaca ..., Hue silky SQUARE AND FLAT STEEL WIRE. 513 No. 4055. Marks, No. 230. Sectional area, ".0984 x ".0986=. 0097 square inch. Gauged length, 10". Applied loads. EloDsation per incli. Successive elongation per inch. Permanent set. Successive permanent set. Bemarks. Total. Per square inch. Pounds. 48 194 388 . 582 776 ' 970 1,164 1,212 1,201 1,309 1,358 1,406 1,455 1,603 1,552 1,600 1, 64D 1,670 Pounds. , 5,000 20,000 40, 000 60, 000 80, 000 100, 000 120, 000 125,000 130, 000 135, 000 140, 000 145, 000 ISO, OOO . 155,000 160, 000 165, 000 170, 000 172, 160 Inch. 0. .00078 .00160 .00237 . 00325 .00400 . 00505 ' . 00525 , 00555 .00580 ' . 006 10 .00657 . 00705 .00800 . 00905 .01100 .01575 Inch. 0. .00078 . 00072 .00087 . 00088 .00075 . 00105 . 00020 . 00030 .00025 . 00030 .00047 .00048 . 00095 .00105 . 00195 . 00475 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General summary. Tensile strength per square inch of original section pounds.. 172,160 Elastic limit per square inch of original section do... 140,000 Elongation per inch after rupture ^ inch.. .010 Elongation per Inch under strain at elastic limit do... .00610 Keduction in area after rapture, per centum of original sec tion 39. 2 Position of rupture 7".25 ontslde the gauged section Character of broken surface fine silky H. Ex. 165 33 514 SQUAKE AND FLAT STEEL WIRE. No. 4056. Marks, No. 235. Sectional area, ".0994x".0995=.0099 square inch. Gauged length, 10". . Applied loads. Elongation per inch. Snccessive elongation per inch. Permanent set. Successive permanent set. Bemarks. Total. Per aqnare inch. Pounds. 49 198 396 594 792 990 1,188 1,237 1,287 1,336 1,386 1,436 1,485 1,535 1,684 1,634 1,683 1,712 Pounds. 5,000 20,000 40,000 60,000 80,000 100, 000 120, 000 1V5,000 130, 000 135, 000 140,000 145, 000 150, OUO 155, 000 160,000 165, 000 170, 000 172, 930 Inch. 0. .00072 .00147 . 00227 . 00307 . 00394 .00493 .00613 .00540 . 00572 .00610 . 00653 .00710 .00778 . 00887 .01085 . 01670 Inch. 0. .00072 . 00076 .00080 . 00080 . 00087 .00099 . 00020 .00027 . 00032 .00038 . 00043 .00057 . Ol 068 .00109 .00198 .00483 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General summary. Tensile strength per square inch of original section pounds.. 172,930 Elastic limit per square inch of original section do... 140,000 Elongation per inch after rupture inch.. .019 Elongation per inch under strain at elasticlimit do... .00610 deduction iu area after rupture, per centom. of original section 35.4 Position of rupture ".35 inside the gauged section Character of broken surface fine BU^y SQUARE AND FLAT STP:EL WIRE. 5i5 No. 4057. Marks, No. 240. Sectional area, ".0994 x ".0993 =.0099 square inch. Gauged length, 10". Applied loads. Elongation per inch. SnccessiTe elongation per inch. Permanent set. Successive permanent set. Bemarks. Total. Per square incn. Poundt. 49 193 396 594 792 990 1,198 1,237 1,287 1, 336 1,386 1,436 1,485 1,535 1,584 1,634 1,683 1,733 1,778 Pound). 5,000 20, 000 40,000 60, 000 80, 000 100, 000 120, 000 125,000 -130; 000 135, 0,00 140.000 145, O'OO 150,000 155, 000 160, 000 16~, 000 170, 000 . 173,000 179, 600 Inch. 0. .00078 .00156 .00230 . 00318 .00408 .00508 .00532 . 00568 .00591 .00630 .00067 .00710 . 00772 . 00840 . 00975 . 01165 .01565 Inch. 0. . 00078 . 00078 .00074 .00088 .00090 . 00100 . 00024 . 00026 . 00033 . 00039 . 00037 .00043 . 00062 .00068 .00135 .00190 . 00400 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General summary. Tensile strengtii per square iuch of original aectiou ^ pounds.. 179,600 Elaslic limit, per square inch of original section do... 145,000 Elongation per incli alter rupture inch.. •"20 Elongation per inch under strain at elastic limit do... .00667 Keductlun in area after rupture, per centum of original section 33.3 Position of rupture 1".70 outside the gauged section Character of broken surface fine silky 516 SQUARE AND FLAT STEEL WIEE. Ko. .4058. Marks, No. 245. Sectioual area, ".0986x".0987=.0097 square inch. Gauged length, 10". Applied Ibada. Elonjiatiou per inch. Siicceasive elongation per inch. Permanent set. Successive permanent set. Kemarks. Total. Per .square JDCb. Pminds. 48 194 :ii-8 582 770 970 1, lot 1, 212 1,201 1, 309 1, 358 1,400 1,455 1,503 1, 652 1, 000 1,640 1,088 Pounde. 6,000 20, 000 40, 000 0,0, 000 80, 000 100, 000 120, 000 125, 000 130, 000 135, 000 140, OUO 145, 000 150, 000 155,000 100, 000 165,000 170, 000 174, 020 Inch. 0. . 00081 .00101 . 00241 . 00330 . 00427 . 00529 . 00508 . 00600 .00635 . 00680 . 00730 . 00812 . 0I'885 .01047 .01265 . 01775 Inch. 0. . 00081 . 00080 . 00083 . 00080 . 00097 .00102 .00039 . 00032 .00035 . CO045 . 00050 . 0008* . 00073 .00102 .00218 . 00510 Inch. 0. Inch. 0. luitialload. Elastic limit. Tensile strength. General summary. Tensile atrengih per square iuob of orieinal section poiiiids-- 174,020 Elastic limit per square inch of original section do... 135, 000 Elongation per ineb after rupture inch.. .025 Elmijiaiion per inch under strain at elastic limit ,-. .do,.. .00635 Kednction in area after rupture, per centum of original section 34.0 Position of rupture 1".20 inside the gauged section Character of broken surface fine silky SQUARE AND FLAT STEEL WIRE. 617 Marks, No. 250. Seel ion al area, ' Ga'iged leugtli, '.0!)7S X 10". No. 4(K59. .0987 = .0096 square inch. Applied loads. Klorgation ptT inch. Snccesaire elongation Xier inch. Permanent set. Suc^^essiTe permaneDt set. Komarks. Total.' PeT .square iucb. Pounds. 48 192 384 676 768 960 1, 153 1,200 1,248 1,296 1,344 1,303 1,4 to 1,488 1,536 1,584 1,632 1,680 1,694 Poundg. 5; 000 20, 000 40, 000 00, 000 8C, 000 iOO, 000 120,000 12S,000 130,000 135,000 140; 000 145, 000 150, 000 155,000 160, 000 105,000 170, 000 175, 000 170, 460 Inch. 0, . 00074 .00150 . 00J24 .00312 . 00384 . 00472 . 004U8 . 00520 . 005.')2 . 00.'>89 . (.06. 8 . (lOBC'B . 00724 . 00806 . 011892 .01110 .01586 Inch. . 0. . 00074 . 00076 . 00074 . 000.78 . 00082 . 00088 . 00026 .00022 . 00032 . 00037 . 00039 .000)0 . 00056 ■ . 00081 . 00087 .00218 .. 00476 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. j 1 1 ■ General summari/, Tensilo Ptreugth per square iuc.liof original section pounds.,. 176»460 Eluslic limit per sqnavH inch or' origiaaT auction (lo..> 150, 000 Kloiigalion per hich after rupture inch.. .010- KioDKatioii per inch iimler strain at elastic limit do... . 00668 liciUiclion in area alter rupture, per centum of original section 36.5 Position ot rupture - U". 10 outside the gauged section Character of broken surface flue silky 518 SQUARE AND FLAT STEEL WIRE. No. 4060. IVlBjrks No 255 Sectional area, '".0988 x ".0988=. 0098 square inch. Gauged length, 10". Applied loads. Elongation per inch. SnccesBive elongation per inch. Permanent set. Successive permaueut set. Remarks. Total. Por aqnare inch. Founds. 49 196 392 588 784 980 1,176 1,225 1,274 1,323 1,372 1,421 1,470 1,519 1,568 1-,617 1,650 Founds. 5,000 20, 000 40, 000 60, 000 80,000 100, 000 120, 000 125. 000 130,000 135, 000 140, OOO 145, 000 150, 000 165, 000 160, 000 165, 000 108, 370 Inch. 0. . 00082 .00150 . 00234 . 00320 . 00402 .00499 .00521 . 00550 . 00582 . 00621 . 00668 . 00723 .00797 . 00930 .01240 Inch. 0. . 00082 . 00068 . 00084 . 00086 . 00082 . 00097 . 00029 . 00020 .00032 . (10039 .00047 .00055 . 00074 . 00133 . 00310 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. . General tmmmary. Tensile BireDgth per square incli of original section pounds.. 168,370 Elastic limit per square inch of original aeotion do... 140, 000 Elongation per inch after rapture inch.. .Oil Etongabion per inch under strain at elastic limit do... . 00C21 Keduction in area after rupture, per centam of original section 37. 8 Position of rupture 2".25 outside the ;;aaged section Character of broken surface , fine silky SQUARE AND FLAT STEEL WIRE. No. 4061. Marks, No, 260. Sectional area, ".0987x".0993=.0098 square inch. ' Gauged length, 10". 519 Applied loads. Elongation per Inch. Successiye elongation per inch. Permanent set. Successive permanent set. Remarks. Total. Per square Inob. Pounds. 49 196 392 688 784 980 1,176 1,225 1,274 1,323 1,372 1,421 1,470 1,519 1,568 1,617 1,666 1,715 1,764 1,813 1,839 Pounds. 6,000 20, 000 40, 000 60,000 80, 000 100,000 120, 000 125,000 130, 000 135, 000 140, 000 145, 000 150, 000 165, 000 160, 000 165, 000 170, 000 175, 000 180, 000 186,000 - 187,650 Inch. 0. . 00072 .00150 .00225 . 00305 .00388 .00479 .00499 .00532 .00549 .00685 .00005 .00630 . 00665 . 00707 .00790 , .00875 , 00990 .01190 .021 Inch. 0. .00072 . 00078 .00075 . 00080 . 00083 .00091 . 00020 . 00O33 .00017 .00036 . 00020 . 00025 . 00035 . 00042 .00083 .00085 . 00115 .00200 .00910 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General summary, TenBile Htrength per equare inohof oripnal section pounds.. 187, 650 'Elastic limit per square inch of original section do .. 15o, 000. Elongation per inch aftemiplnre incli.. .022 iHoDgatiou per inch ander strain at elastic limit do... . 00665 deduction in area after ruptare, per centum of original section 36.7 Position of rupture l".60inside the gauged section Character of brolcen surface.. fine silky 520 SQUARE AND PLAT STEEL WIRE. No. 4062. Marks, No. 265. Sectional area, ".0984 x ".0994=. 0098 square inch. Gauged length, 10". Applied loads. Elongation per inch. Sucoessive elongation per inch. Permanent set.--. Successive perniainent set. ' Kemarks. Total. Per square Inch, Pounds. 49 196 392 688 784 980 1,176 1,225 1,274 J, 323 1,372 1,431 1,570 1,519- 1,668 1,617 1,666 1,715 Pound.s. 6,000 20,000 40, 000 60, 000 80, 000 100, 000 120, 000 125, 000 130,000 136, 000 140, 000 145, 000 150, 000 155,000 160, 000 165, 000 170, 000 175, 000 Inch. 0. . 00075 .00152 . 00234 . 00318 . 00410 .00510 . 00537 .00678 . 00593 . 00630 . 00675 . 00720 .00784 . 00887 .0li)'48 .01560 .027 Inch. 0. ■ .00075 . 00077 . 00082 .00084 . 00092 . 00100 . 00027 .00041 . 00025 . 00037 . 00045 .00045 .00064 . 00103 .00161 . 00512 . 01140 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. - General summary. Tensile 8trenE;th per square incli of original section pounds.. 175, 000 !EIastic limit per square inch of origiuaT section do... 140, 000 ,Klongation per inch after rapture inch.. .026 Elongation per inch under strain at elastic limit do... .00630 Beduction in area after rapture, per centum of original section 31.6 Position of ropture 4" .57 inside the gauged section Character of broken surface :... fine silky SQUARE AND FLAT STEEL WIRE. 521 No. 4083. Marks, No. 270. Sectional area, ".0990x".0992=.009S square inch. Gauged length, 10". Applied loads. Elongation per iuch. SucceBsive elongation per ineh. Permanent sot. Successive permanent set. Homarks. Total. Per square iuoh. Pounds. 49 196 392 588 784 980 1,176 1,225 1,274 1.323 1,372 1,421 1,470 1,619 1,668 1,617 1.666 1,715 1,742 Pounds. 5,000 20, 000 40, 000 60, 000 80, 000 100, 000 120, 000 12.5, 000 130, 000 135, OuO 140, ODD 145,000 150, 000 155, 000 160,000 165, 000 170, 000 175, 000 177, 760 Inch. 0. . 00077 .00157 .00230 .00312 . 00399 . 00492 . 00517 .00548 . 00578 .00611 . 00650 . 00695 . 00755 . 00838 . 00972 . 01275 .022 Inch. 0. . 00077 .00080 ' .00073 . 00083 . 00087 .00003 . 00025 . 00031 . 00030 . 00033 . 00039 . 00045 . 00066 .00083 . 00134 .00303 .00925 Inch. 0. Inch. 0. ■ * Initial load. Elastic limit. Tensile strength. General summary. Tensile strength per square incli of original section pounds.. 177,760 Elastic limit per square Inch of original section .do... 145,000 Elongation per inch fcfter nipture inch.. .026 Elongation per inch under strain at elastic limit do... .00650 Reduction in area after rupture, per centum of original section 34. 7 Position of rupture 4".25 inside the gj^uged section Character of broken surface i fine silky 522 SQUARE AND FLAT STEEL WIRE. No. 4064 Marks, No. 275. Sectional area, ".0992 x ".0991 =.0098 square inch. Gauged length, 10". Applied load.s. Elongation per inch. Successive elongation per inch. Permanent set. Sncceasive permanent set. Kemarks. Total. Per sqnare inch. Pounds. 49 196 392 588 784 980 1,176 1,225 1, 274 1,323 1,372 1,421 1,470 1,519 1,568 1,617 Fo'dnds. 5,000 20, 000 40. 000 60, 000 80, OCO 100, 000 120, 000 125, 000 130, 000 135, 000 140, 000 145, 000 150. 000 155, 000 160, 000 165,000 Inch. 0. .00074 . 00148 . 00228 .00310 . 00400 . 00498 .00518 . 00552 .00587 . 00623 . 00685 . 00775 . 00940 . 01520 Inch. 0. . 00074 .00074 . 00080 . 00092 . 00090 . 00098 . 00020 . 00034 .00035 . 00041 .00057 . 00090 .00165 . 00580 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General summary. Tensile stren^b per sqnare inch of oriffinal section pounds. . 165,000 Elasticliniit per square inch of original section do... 135,000 Elongation per iocn after rupture inch,. .030 Elongation per incli under strain at elastic limit do. .. . 00087 Keduction in area after nipture, per centum of original section 39. 8 Position of rupture^ 2". 12 inside the gauged section Character of broken surface ; fine BUky SQUAEEAND FLAT STEEL WIEE. 523 No. 4065, Marks, No. 280. Sectional area, ".0986x".0986=.0097 square inch. Gauged length, 10". Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. SuccessiYe permanent set. Kemarks. Total. Per square inch. Pounds. 48 194 388 582 776 970 1,164 1,212 1,261 1,309 1,358 1,406 1,455 1,503 1,562 1,600 1,649 1,697 1,746 1,781 Pounds. 5,000 20, 000 40, 000 60, 000 80, 000 100, 000 120, 000 125, 000 130,000 135, 000 140,000 14.5, 000 150, 000 155,000 160, 100 165, 000 170, 000 175,000 ■ 180,000 183,610 Inch. 0. . 00071 . 00143 . 00230 . 00307 .00388 . 00488 . 00507 . 00527 .00567 . 00585 .00620 . 00656 . 00700 . 00760 . 00847 .01005 . 01240 . 01720 Inch. 0. . 00071 . 00071 .00088 . 00077 . 0OO81 . 00100 .00019 . 00020 .00030 . 00028 .00035 . 00035 . 00045 . 00060 . 00087 .00158 .00235 . 00480 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. ■ , General summary. Tensile strength per square inch of original section pounds. . 183,610 Elastic limit per square inch of original section do . . 150, 000 Elongation per inch after rupture inch. . .020 Elongation per inch under strain at elastic limit. do .. .00655 Kednction in area after ruptare, per centum of original section 37. 1 Position of rapture 2",48 inside the gauged section Character of broken surface .....fine silky 524 SQUARE AND PLAT STEEL WIRE. No. 4066. Marks, No. 295, > Sectional area, ".0990 x ".0993=.0098 square inch. Gauged length, 10". A pplied loads. ElongatioB per inch. Successive eloD,2ation per inch. Permanent set. Successive permanent sat. Eemarks. Total. Per square inch. Pounds. 49 196 392 588 784 980 1,170 1,225 1,274 1,323 1,372 1,421 1,470 1.619 1,568 ,1,617 1,666 1,715 1,728 Pounds. 5,000 20, 000 40, 000 60, 000 80, 000. 100, 000 120, 000 125, 000 130, 000 13.5, 000 140,000 145, 000 150, 000 155,000 100, 000 165,000 170, 000 175, 000 176, 330 Inch. 0. . 00073 .00144 .00218 .00301 . oo;l^o . 00481 . 00409 . 00.529 . 00559 . 00580 . 00021 . OOCOli .00718 . 0O706 . 00850 .01045 . 01622 Inch. 0. . 00073 . 00071 . 00074 . 00083 . 00085 . 00098 .00016 . 00030 . 00030 . 00027 . 00035 . 000)5 . 00052 . 00047 .00091 . 00189 . 00577 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. Gtncral summary. Tensile streDgth per fiquaro inch of original section pounds. . 176,330 lilaslic limit per square incli oT oiiginal section do .. 145, 000 Elongation per in4ii after rupture inch.. .020 Elonsatiou per inch under strain at elastic limit do,.- .00621 Keduction in area after rupture, per centum of original section 39.8 Position of rupture 2".50 inside the gauged section Character of broken surface fine silky SQUARE AND FLAT STEEL WIKE. 526 jSTo. 4067. Marks, No. 300. Sectional area, ".0987x",0985=.0097 square inch. Gauged length, 10". Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. Sncceesive permanent set. Kemarlcs. Total Per square inch. Pounds. 48 194 388 .■182 776 970 1,161 1, 212 1,261 1,309 1,358 1,406 1,455 1,503 1, 552 1,563 Pounds. 5,000 20, 000 10,000 60. 000 80,000 100,000 120,000 . 123, 000 130, 000 135, 000 140, 000 145, 000 150,000 ■ 155, 000 160, 000 161, 130 Tneh. 0. . 00078 .00153 . 00230 . 00310 . 00395 .00481 . 00506 . 00528 . 00556 . 00590 . 00628 . 00085 .00760 . 01252 Inch. 0. .00078 - . 00075 .00077 . 00080 . 00085 . 00086 .00025 . 00022 . 00028 .00031 .^ooo;t8 . 00057 . 00075 . 00192 Inch. 0. Inch. 0. Xnit-ial load. Elaatic Umit. Tensile strength. General summary. Tensile strength per sqaare inch of original tiection ..^ pounds.. 361,130 Elastic limit per square Incb of original section do .. 145, 000 EloDgal'ion per inch after rapture inch.. .010 Elongation per inch under atrain at elastic limit do... .00628 Ked action in area after rupture, per centum of original section 37.1 Position of rupture 5".20 outside the gauged section Character of broken surface fine silRy 526 SQUARE AND PLAT STEEL WIRE. No. 4068. Marks, No. 310. Sectional area, ".0982x".0986=.0097 square inch. Gauged leugth, 10". Applied loads. Elongation per inch. Sacoessive elongation per inch. Permanent set. Snceesaive permanent set. Bemarks. Total. Per square inch. Pounds. 48 194 388 582 776 970 1,1 U4 1,212 1,261 1,309 1,3)8 1,406 1,455 1,503 1,552 1,600 1,632 Founds. 5,000 20, 000 40, 000 60, 000 ■ SO, 000 lOO. 000 120, 000 125, 000 130, 000 135, 000 140, 0(10 14.0,000 150, 000 155, 000 160, 000 165, 000 168, 250 Inch. 0. . 00075 . 00148 . 00234 ' .00312 . 00393 .00477 . 00502 . 00528 . 00551 .00577 . 00610 . 00642 .00090 . 00776 . 01231 Inch. 0. . 00075 . 00073 . 00086 . 00078 . 00081 .00084 . 00025 .00024 . 00025 .00026 . 00033 . 00032 . 00054 . 00080 .00455 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General summary, Teoaile ntreEgtli per square inch of origmal section pounds.. 168,250 Elaetic liiitlt per square inch of origiuaf section do .. 150, 000 Elonfjatioju per inch after rupture , inch.. .007 Elongation per inch under strain at elastic limit _ do... , 00642 Ked action in area after rupture, per centum of original section 1 3?. 1 l*08ition of rupture .1 5". 95 outside the gauged section Character of broken surface fine silky SQUARE AND FLAT STEEL WIRE. No. 4069. Marks No. 315. Sectional area, ".0990 x ".0992 = .0098 square inch. Gauged length, 10". 527 Applied loads. Elongation per inch. * Successive elongation per incli. Permanent set. Successive permanent set. Eemarlis. Total. Per Bqnare IDCU. Pound*. 49 196 392 588 784 980 1,176 1,225 1, 274 1, 323 1,372 1,421 1,470 1,519 1,568 1,617 1,628 Pounds. 5,000 20,000 40, 000 60,000 80, OUO 100,000 120, 000 ■ 125, OoO 130, 000 135, 000 140, 000 145, 000 150, 000 155, 000 160, UOO 165, 000 166, 120 Inch. 0. .00072 . 00149 . 00219 . 00302 . 00392 . 00490 . 00512 .00642 . 00574 .00627 .00672 . 00720 .00813 .00970 • .07450 Inch. 0. . 00072 . 00077 . 00070 . 00083 . 00090 . 00098 . 00022 . 00030 . 00032 . 00063 .00045 . 00048 .00093 . 00157 . 00480 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. ' General summary. Tensile strength per square inch of original section pounds.. 166,120 Elastic limit per square inch of originalsection do... 135,000 Elongation per inch after rupture inch.. .012 Elongation per inch under strain of elastic limit do... .00674 Keduction in area after rupture, per centum of original section 31. 6 Poailiouof luptnre ^ l."25 inside the ganged section Character of broken surface — fine silky 528 SQUARE AND PLAT STEEL WiKE. No. 4070. Marks, No. 320. Sectional area, ".i003x".100C=.0101 square inch. Gauged length, 10". Applied loads. Eloncration per iuch. Successive elongation per incb. Permanent set. Successive permanent set. Kemarks. Total. - Per square inch. Pounds. 50 202 404 606 808 1,010 1,212 1,262 1,313 1,363 1,414 1,464 1,616 1,565 1,616 1,666 1,684 Pounds. ■5, 000 20, 000 40, OUO 60, 000 80, 000 100, 000 120, 000 126, 000 130, 000 135, 000 140, 000 143, 000 150, 000 155, 000 160, 000 165, 000 160, 730 Inch. 0. .00072 . 00142 .00228 . 00308 .00398 . 00488 . 00610 .00547 . 00578 . 00615 . 00662 . 00715 . 00785 . 00935 . 01395 Inoh. 0. . 00072 . 00070 . 00086 . 00080 . 00090 . 00090 . 00022 . 00037 . 00031 .00037 . 00047 . 00053 . 00070 . 00160 .00400 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. . General summary. 'Tensile strength per square incli of original section pounds . . 166, 730 Elastic limit per square inch of original section do. . . 140, 000 Elongation per inch after rupture inch,. . 007 Elongation per inch under strain at elastic limit do... .00C15 KeductioD iu area after nipture, per centum of original section 36.,6 Position of rupture 5". 30 outside the gauged sectidu Character of broken surface .fine silky SQUARE AND FLAT STEEL WIEE. Fo. '4071. Marks, No. 325. Sectional area, ".0g83x".0986=.0097 square inch. Ga&ged lengtb, 10". 529 Applied loads. Elongation per inch. Snccesslve elongation per inch. Permanent set. SuocessiTe pornianent set. Rom ark 8. Total. Per square iDch. Poimrfn. 48 194 388 682 776 970 1,164 1,212 1,261 1,309 1,358 1,406 1,455 1,503 1,552 1,600 1,649 Pounds. E,000 20,000 40, 000 60,000 80, 000 100, 000 120, 000 125, 000 130,000 135, 000 140,000 145, 000 150, 000 155,000 160, 000 165, 000 170,000 Inch. 0. .00077 .00154 .00232 - .00313 . 00417 .00520 . 00545 .00588 . 00625 .00670 . 00718 . 00768 . 0(845 . . 00090 . 01225 .02034 Inch. 0. .00077 .00077 . 00078 .00081 . . 00104 .00103 . 00025 . 00043 .00037 .00045 . 00U48 . 00050 . 00077 .00145 . 00235 . 00809 Inch, 0. Inch. 0. initial load. ElflAtic limit. Tensile strength. General summary. Tensile strength per square inch of original section * pounds.. 370,000 IGIastic limit per sqnareinch of OTiglnal section do... 135,000 Elongation per inch after mptnre ,inch,. .013 Elongation per inch nnder strain at elastic limit .»do. . . . 00625 Beductionin area after rupture, per centum of original section 34.0 Position of rupture a 5".30 outside the gauged section Character of broken surface fine silky H. Ex. 165 34 530 SQUARE AND FLAT STEEL WIRE. No. 4087. Marks No 335. Sectional area, ".0983x".0987=.0097 square inch. Gauged length, 10". Applied loads. Elongation per ioch. Successive elougation per inch. Permanent set. Successive porniaueut set. Item arks. Total. Per square inch. Founds, 48 194 388 582 776 970 1,164 1, 212 1, 261 1, 3(19 1, 358 l,4U(i 1,455 1,603 1,552 1,686 Founds. 5,000 20, 000 40,000 60, 000 80, 000 100, 000 120, -OOO 125, 000 130, 000 135, 000 140, 000 145, 000 150, 000 155, 000 ■ 160,000 163,500 Inch. 0. . 00972 .00151 . 00220 . 00305 . 00390 . 00515 . 00535 . 00575 .00018 . 00668 . O07.i0 .O0S15 .01090 .021' Jnch. 0. .00072 .00079 .00069 . 00085 . 00091 . 00119 . 00020 .00040 . 00043 . 00070 . 00062 . 00085 . 00275 .0101 Inch. 0. Inch. 0. ' Initial load. Elastic limit Tensile sfrength. ' . General summary. Tensile strength per square inch of original section pounds.. 163, 500 Elastic limit per square inch o? original section do . . . 130, 000 Elongation per inch after rupture ■ \ inch.. .016 Elongation per inch under strain at elastic limit do . . ! . 00575 Keduction in area after rupture, per centum of origiual section 39 2 Position of rupture l".4Q,putside the gauged section. Character of broken surface Uno silky Marks, No. 340. Sectional area, ".0993 x Gauged length, 10". SQUARE AND FLAT STEEL WIEE, No. 4088, 531 '.0987 == .0098 square inch. Applied loads. Elongation per incli. SuocesBiTe elongation per inch. ' Permanent set. Snccessive perionneDt sot. Kemarks. Total.- Per square inch.. Founde. -49 196 392 588 784 980 1,176 1,225 1,274 1,323 1,372 1,421 1,470 1,519 1,568 1,617 1,641 Founds. 5,000 20, 000 40,000 60, 000 80, 000 100, 000 120, 000 125, 000 130, 000 135, 000 140, 000 - 145, 000 150, 000 165, 000 160, 000 165, 000 167,450 ln.ch. ,0. .00080 .00160 . 00242 . 00319 .00413 .00519 . 00542 . 00674 . 00610 .00647 .00700 .00772 . 00878 .01112 .022 Inch. 0. .00080 . 00080 .00082 .00077 . 00094 .00106 . 00023 .00032 .00036 . 00037 . 00053 . 00072 . 00106 .00234 .01088 ■ Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strengtli. General summary » Teneile strength per square iEch of original section pounds . . 167, 450 Elastic limit per square inch of original section do 140,000 Elongation per inch after rupture, inch., .028 Elongation per inch under attain at elantic limit - do 00647 Seduction in area after rupture, per centum of original section 43. 9 Position of rupture 2'M5 inside the ganged section Character of broken surfiace fine silky 532 SQUAEE AND FLAT STEEL WIRE. No. 4089. Marks, No. 360. Sectional area, ".0987 x ".0986=, 0097 square inch. , Gauged length, 10". • Applied loads. Elongation per inch. Successive elongation per iucli. Permanent set. Successive permanent set. Kemarks. Total. Per square incli. Pounds. 48 194 388 582 776 970 1,164 1,212 1,261 1,309 1,358 1,406 1,455 1,603 1,646 Pounds. 5,000 20, 000 • 40,000 60, 000 80,000 100, 000 120, 000 125,000 130, 000 135, 000 140, OOO 145, 000 150, 000 155,000 159, 380 Inch. 0. . 00079 .OOliO . 00235 ■ . 00329 . 00429 .00562 . 00589 .00638 .00708 .00777 . 00906 . 01062 .017 - Inch. 0. .00079 .00080 . 00076 .00094- . 00100 .00133 . 00027 .00019 . 00070 . 00069 . 00129 ' . 00156 .00638 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General summarj/. TeoBile Btrength per square inch of ori^nal seetion pounds.. 159,^80 Elastic limit per square inch of original section do... 125, OOO Elongation per incn after inpture ." inch.. .023 Elongation per inch under strain at elasticlimit .00589 Keductiou in area after rupture, per centum ot- original section 36.1 Position of rpptnre 3".l inside the gauged section Character of broken surfdce fine silky SQUARE AND FLAT STEEL WIRE. 533 No. 4090. Marts, 'So. 365. Sectional area, ".0988 x ".0988=. 0098 square inch. Gauged length, 10". Applied loads. Elonsation por inch. Successive elongation per inch. Permunent set. Snocessive permanent set. Kemarks. Total. Per sqnaie incti. Pmndi. 49 196 392 588 781 980 1,176 1,225 1,274 1,323 1,372 1,421 1,470 1,519 J, 568 1, 597 Pounds. 6,000 20,000 40, OUO 60,000 80, 000 100, 000 120, 000 125, 000 130, 000 ' 135, 000 140,000 145, 000 150, 000 155, 000 160, 000 -162,960 Inch, 0. .00077 .00155 .00234 . 00321 . 00420 . 00544 . 00577 . 00613 .00667 .00727 .00810 .00932 .01170 .019 Inch. 0. .00077 .0Q078 .«i079 . 00087 .00099 . 00124 .00033 .00036 .00094 .00060 . 00083 .00122 . 00238 .00730 Inch. Oi Inch. 0. Initial load. Elastic limit. Tensile stiength. General summary. Tensile strength per square inch of original section pounds.. 162,960 Elastic limit per square inch of original section do.-. 130,000 Elongation per inch after rnptnre i Inch.. .017 Elongation per inch under strain at elastic limit do... .00613 Beduction in area after rupture, per centum of original section .' 49. Position of rupture ".75 outside the ganged section Character of broken surface toe saty 534 SQUARE AND FLAT STEEL WIRE. No. 4091, Marks, No. 370. Sectional area, ",0996x".0999=.010 square inch. Ganged length, 10". Applied loads. Elongation per inch. Siiccesaive elongation per inch. Permanent set. Successive permanent set. EemarUs. Total. Per square inch. Pounds. 60 200 400 600 800 1,0011 1, 200 1, 250 1,300 1,350 1,400 1,450 1,500 1,560 1,600 1,660 1,700 1,750 Pounds. 5, OUO 20, 000 40, 000 60, 000 80, OUO 100, 000 120, 000 125, 000 1311, 000 135, 000 140, 000 145, 000 150, 000 155, 000 160, 000 165, 000 170, 000 175, OOO Inch. 0. . 00088 . 00178 . 00249 . 00338 . 00427 . 00520 . 00545 .00572 . 00605 . 00635 . 00675 . 00728 . 00800 . 00895 .01060 .01435 .029 Inch. 0. .000S8 . 00090 . . 00071 . 000S9 - . 00089 . 00093 . 00025 .00027 . 00033 . 00030 .00040 .00053 . 00072 . 00095 . 00165 . 00375 .01465 Inch. 0- Inch. 0. Initial load. Elastic limit. Tensile strength. General summary. Tenaile strength per aqnare inct of original section pouTids.. 175,000 Elastic limit per square inch of original section do .. 145, 000 Elongation per inch after rupture inch.. .029 Elongation per inch under strain at elastic limit do . . . 00675 Ecduction in area after rupture, per centum of original section 45.0 Position of rupture 4".7 inside the gauged section Character of broken Burface.... ' fine, sllli^y OyUAKlli AJNJU i'L,AT STIDEL/ WlKJfi. No. 4002. 00 Marts, Ko. 375. Sectioual area, ".0995x".0996=.0099 square inch. Gauged length, 10". Applied loads. Elongation per inch. SncceBsive elongation per inch. Permanent set. Successive permanent .';et. Remarks. Total. Per square incli. Poundt. 49 198 396 '; 591 ' 792 990 1,188 1,237 1,287 1, 336 ' 1,386 1,136 1,185 1,535 "1, 584 1,631 1,683 1,733 1,710 r&Hnds. &000 20, 000 40, 000 60, 000 80,000 100, 000 120, OOO 125, OOA 130,000 135, 000 140,000 145, 000 150,000 155, 000 160,000 166,000 170,000 176, 000 176, 360 Inch. 0. .00081 .00161 . 00211 . 00328 . 00118 . 00521 .00517 . 00570 .00607 ■ .00650 .00687 , 00737 .00810 . 00900 . 01035 .01317 .023 IneJi. 0. .00081, .00120 .00080 . 00087 .00090 . 00103 . 00026 .00023 ' . 00037 .00043 . 00037 . 00050 . 00073 . 00090 . 00136 . 00282 . 00973 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strengtb. Genei^al summary. TenBile strength per square inch of original section ponnds . . 17fl, 36 Blastic limit per aaiiare inch of origin^ section ....do... 145,00 Elongation per inch after rapture inch.. .01 Elongation per inch under strain at elastic limit do... .OOCfi Keduction in area after rupture, per centum of original section 46. Position of rupture ".25 outside the gauged sectio: Character of broken surface £ne silk 536 SQUARE AND FLAT STEEL WIRE. No. 4093. Marks, No. 380. Sectional area, ".0992x."0980=.0097 square inch. Gauged length, 10". Applied loads. Klonjration per inch. Successive elongation per inch. Permanent set. SucceRsivo permanfjut aet. Eomarks. Total. Per aqaare inch. Pounds. 48 195 38S 582 776 970 1.164 1, 212 1,261 1.309 1,358 1,406 1,453 1,503 1,552 1,596 Pounds. 5,000 20, 000 40, 000 60, 000 80, 000 100, 000 120, 000 125, 000 130,000 135, 000 140, 000 145,000 150, 000 155,000 160, 000 164,540 Inch. 0. .00073 . 00154 . 00229 .00314 . 00404 .005J4 . 00552 .00587 .00637 . 00687 . 00772 . 00920 .01190 .021 Inch. 0. .00073 . 00081 .00075 .00085 . 00090 . 00120 . 00028 .00035 . 00050 .00050 . 00085 . 00148 .00270 .00910 Inch. 0. Inch, 0. Initial load. Elastic limit. Tensile strength. '^- General summary. Tensile strength per square inch of original section pounds.. 164, 540 Elastic limit per square inch of original section do. .. 130, OUO Elongation per inch after rupture inch.. . 0.17 Elongation per inch nnder strain at elastic limit : do... .00587 Keduction in area after rupture, per centum of original section 45.4 Position of rupture ..1".8 inside the gauged section Character of broken surface fine silky SQUARE AND FLAT STEEL WIRE. 537 Fo. 4094, Marks, Fo. 385, Sectional area, ".0985 x ".0990 = .0098 square inch. Gauged length, 10". Applied loads. Elongation per inch. Successive elongation » per inch. Permsnent set. Snoce.ssive permanent set. Remarks. Tntal. Per square inch. Foundi. 49 196 392 688 784 980 1,176 1,225 1,274 1,323 1,372 1,421 1,470 1,519 . 1, 568 1,617 1,652 Pounds. B,000 20,000 40, 000 60,000 80, 000 100,000 120,000 125,000 130,000 135, 000 140, 000 145. 000 160,000 155, 000 160, 000 165, 000 168, 570 Inch. 0. .00071 .00148 .00223 .00305 .00390 .00494 . 00510 . 00540 . 00576 .00607 .00650 .00710 .00800 . 01012 .021 Inch. 0. .00071 .00077 .00075 . 00082 .00085 .00104 .00016 . 00030 . 00036 . 00031 .00043 . 00060 .00090 , . 00212 .01088 Inch. 0. Inch. 0. Initial load. Elastic limit. TeDsile strength. ' r General summary. l^ensile strength per square inch of oripnal- section pounds.. 168,570 Elasticlimit per square inch of original section do... 140,000 Elongation per incb after rupture inch.. .024 Elongation per inch under strain at elastic limit do... .00607 Keduction in area after rupture, per centum of original section 45. 9 Position of rupture. ".45 outside the gauged section Character of broken surface ^ue silky 538 SQUAEE AND FLAT STEEL WIRE. No. 4095. Marks, No. 390. Sectional area, ".0993 x ".0994 = .0099 square inch. Gauged length, 10". Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. Successive permanent set. Remarks. Total. Per square inch. Founds. 49 198 396 594 792 990 1,188 1,237 1,Z87 1,336 1,386 1,436 1,485 1,535 1,684 ' 1,634 1,683 1, 733 1,745 Founds. 5,000 20, 000 40, 000 60, 000 80, 000 100, 000 120, 000 125,000 130, 000 135, 000 140, 000 145, 000 160, 000 155,000 160,000 165, 000 170, 000 176, 000 176,260 Inch. 6. .00070^ . 00140 .00217 . 00297 .00377 . 00460 .00479 . 00502 .00525 . 00560 . 00577 . 00017 .00657 .00722 . 00850 . 01300 .026 Inch. 0. .00070 . 00070 . 00077 .00080 . 00080 . 00083 .00019 . 00023 . 08023 . 00025 . 00027 . 00040 . 00040 . 00065 . 00128 .00460 .013 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General summary. Tensile strength per square incli of oriEinal section pounds'.. 176, 260 .JElastic limit per sqaare inch, of original section do... 145, fcOO Elongation per inch after rupture , inch., . 020 Elongation per inch under strain at elasticlimit do... .00577 Keduction in area after rupture, per centum of original section 41. 4 Position of rupture .' .".3".l outside the gauged section Character of broken surfaoe £ue silky SQUARE AND PLAT STEEL WIRE. No. 4096. Marks, 395. Sectional area, ".0995 x ".0987 =.0098 square inch. Gauged length, 10", 539 Applied loads. Elongation per inch. SuQceasive elongation per inch. Permanent set. Successive permanent set. Eemarlts. Total. Per sqnare incli. Pounds. 49 196 392 588 784 980 1,176 1,225 -1,274 1,323 1,372 1,421 1,470 1,619 1.568 1,617 1,646 Pounds. 5,000 20, 000 40, 000 60, 000 80, 000 100, 000 120, 000 125, 000 130, 000 135. 000 140, 000 145.000 150, 000 165,000 160, 000 165, 000 167, 960 Inch. 0. .000070 .000148 . 000231 . 000310 ..000398 . 000498 .000615 .000558 . 000588 .000617 .000667 . 000725 . 000845 . 001137 .024 Inch. 0. .000070 . 000078 . 000083 .000079 . 000088 .000100 . 000017 .080043 . 000030 .000020 . 000050 .000058 . 000120 . 000292 . 001263 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General summary. Tensile strengtli per sqnare in cli of original section ponnds.. 167. n60 Elastic limit per sqnare incli of original section. ..: do. ., HO, dOO Elongation per inch after rupture inch.. .022 Elongation per inch under strain at elastic limit do... .0UG17 Beduction in area after rupture, per centum of original section 39. 8 Position of rupture ".70 outside the gauged section Character of broken surface m. fine silky 540 SQUARE AND FLAT STEEL WIRE. No. 4097. Marks, No. 400. Sectional area, ".0985x".0988=.0097 square inch. Gauged length, 10". Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. Sacoessive permanent set. Eemarks. Total. Per square inch. Pounds. 48 194 388 582 776 970 1,164 1,212 1,261 1,309 1,368 1,406 1,455 1,603 1,552 1,600 1,649 1,679 Founds. 5,000 20, 000 40, 000 60, 000 80, 000 100, 000 120, 000 125, 000 130, 000 135, 000 140, 000 145,000 150, 000 155, 000 160, 000 165, 000 170, 000 .173,000 Inch. 0. .00082 .00160 . 00247 .00330 . 00422 .00525 .00548 .00683 . 00625 . 00655 . 00710 . 00758 .00847 . 00951 .01160 .020 Inch. 0. . 00082 . 00078 . 00087 . 00083 . 00092 . 00103 .00023 . 00035 . 00042 .00030 . 00055 . 00048 . 00089 .00104 . 00209 .0084 IncK 0. Inch. 0. Initial load. Elastic limit. Tensile strength. -• , Tensile strength per square inch of original section ponnds.. 173,000 Elastic limit per square inch of original section do... 140,000 Elongation pet inch after rupture inch . . . 022 Elongation per inch under strain at elastic limit .do... .00655 Keduction in area after rupture, per centum of original section 42. S Position of rupture I'M inside the gauged section Character of broken sorface flue sUkj SQUARE AND FLAT STEEL WIRE. 541 No. 4098. Marks, 405. Sectioual area, ".0994x".0993=.00a9 square inch. Gauged length, 10". Applied loads. EloDgation per inch. Suocenslve elongation per inch. Permanent set. Snoceseive permanent set. Bematkg. Total. Per square incli. Pounds. 49 198 396 594 792 990 1,188 1,237 1,287 1,336 1,386 1,436 1,485 1, 635 1,684 1,634 1,683 1,704 Founds, 5,000 20,000 40, 000 60,000 , 80,000 100,000 120, 000 125, 000 130, 000 135, 000 140,000 145, 000 150, OOO 155, 000 160, 000 165, 000 170, 000 172, 120 Inch, 0. . 00671 . 00157 .D0240 .00333 . 00433 .00,S58 .00587 .00626 .00672 . 00720- .00782 .00862 .00967 .01112 .016 .021 Inch, 0. .00071 .00086 .00083 . 00093 .00100 . 00125 . 00029 .00038 .00047 . 00048 .00002 , 00080 . 00105 .00145 .00488 .005 Inch, 0. Inch, 0. Initialload. Elastic limit. Tensile strengtli. - General summary. Tensile strength per square incli of original section pounds.. 172, 12p Elastic limit per sqnare inch of origitial section do... 130,000 Elongation per inch after rnplnfe „ inch.. .021 Elongation per inch under strain at elastic limit . do. .. . 00625 Seduction in area after rapture, per centum of original section 4Di 4 Position of rupture ., 4".5 inside the gauged section Character of broken surface flue silky 542 SQUARE AND FLAT STEEL WIRE. No. 4099. Marks, No. 410. Sectional area, ".0997 x ".0997 =.0099 square inch. Gauged length, 10". Applied loa4s. Elongation per inch. Successive elongation per Inch. Permanent set Successive permanent set. Remarks. Total. Per square iucli. Founds. 49 198 396 594 792 990 1,188 1,237 1,287 1,836 1,386 1,436 1,485 1,535 1,584 1,634 1,683 Founds. 5,000 20, 000 40, 000 60, 000 80, 000 100,000 120, 000 125, 000 130, 000 135,000 140, 000 145, 000 150, 000 155, 000 160, 000 165, 000 170, OOO Inch. 0. . 00075 . 00153 . 00232 .00319 . 00410 . 00527 .00552 . 00690 . 00630 .00680 . 00741 .00822 . 00942 .01165 .017 .030 Inch. 0. .00075 . 00078 .00079 . 00087 .00091 .00117 .00025 . 00038 . 00040 . OOOoO . 00061 .00081 .00120 .00223 . O0536 .013- Inch. 0. Inch. 0. Initial load. Elastic limit. Tonsilo strength. General summary. Tensile strenfftli per sqnare inoli of orieinal section pouni-is.. 170, COO Elastic limit per square inch of original section do... 135,000 Elongation per incn after rupture iucU., . 024 Elongation per incti under strain at elasticlimit do... .00(^0 IleductioQ in area after rupture, per centum of original section 41.4 PoHition of rupture 3". 2 inside the gauged section Character of broken surface fiue silky SQUARE AND FLAT STEEL WIRE. No. 4100. Marks, 415. Sectional area, ".098Gx ".0985=. 0097 square inch. Ganged length, 10". 543 Applied loads. Elongation per incli^ Suceeseive elongation per inch. Permanent 8et. 'Succeasive permanent set. Bemaris. Total. Per squaxd iucli. Poiinda. 48 194 388 682 776 970 1,104 1, 212 1,261 1,309 1,358 1,406 1,455 1,503 1, 552 1,600 1,649 1,677 Pounds. 6, 000 20, 000 40,000 60, 000 80, 000 100,000 120. 000 125,000 130, 000 liiS, 000 140, 000 145, OUO 160, 000 155, 000 160, 000 106, COO ■ 170, 000 172, 890 Inch. 0. . 00077 .00162 . 00228 . 00308 . 00390 . 00478 . 00497 . 00.627 .00618 . 00577 . 00608 . 00648 . 00708 . 00825 .01120 .024 Inch. 0. . 00077 . 00075 . 00078 . 00080 . 00082 . 00088 . 00019 . 00030 .00021 . 00029 . 00031 . 00040 . 00060 .00117 . 00295 . 01280 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General summary. Tensile strength per square incli of original section pounds.. 172,890 Elastic limit per square inch of original section do... 150,01)0 Elongation per inch after rupture iuch.. .017 Elongation per inch under strain at elastic limit do, .. .00G48 Redaction in area after rupture, per ceutuui of original section 39. 2 Position of rupture 5" outside the gauged section Character of broken sarface fine silky 544 SQUAEE AND FLAT STEEL WIKE. No. 4101. Marks. Eo. 420. Sectional area, ".0996 x ".0992 =.0099 square inch. Gauged length, 10". ' Applied loads. Elongation per inch. Saccessive elongation per inch! Permanent set. Snccesaive peLTaanent set. Eemarks. Total. Per square inch. Pounds. 49 198 396 594 792 990 1,188 1,237 1,287 1,336 1,386 1,436 1,485 1, 635 1, 584 1,634 1,671 Pounds. 5,000 20, 000 40. 000 60, DUO 80, 000 100, 000 120, 000 125, 000 130, 000 135, 000 140, 000 145,000 150, 000 155, 000 100, 000 165, 000 168, 790 Inch. 0. . 00078 .00164 .00229 . 00321 .00418 .00523 . 00547 . 00580 . 00612 , .00654 ' .00712 . 00797 .00917 . 01195 .020 Inch. 0. . 00078 .00076 . 00075 . 00092 . 00097 .00105 . 00024 .00033 .00032 . 00042 . 00058 . 00085 .00120 . 00278 .00805 Inch., 0. Inch. 0. Initial load. Elastic limit. Tensile strength. ■ General summary. Tensile strength per square IdcIi of oriainal section pontids.. 168,790 Elastic limit per square inch of origiual section i. do... 140, OCO Eiougatiou per inch after rupture inch.. . 028 Elongation per inch under Htrain at elastic limit do... .00654 Bc^duction iu ari.a after rapture, per centum of original section 38. 4 Position of rupture ,... 4."85 inside the gauged section Cliaracter of broken surface fine silky SQUARE ANb FLAT STEEL WIKE. No. 4102. Marks, No. 425. Sectional area, ".0987x".0990=.0098 square inch. Gauged length, 10". 545 Applied loads. Elontratioii per iuch. Successive eloDgation per inch. PermaneDt set. Successive permanent set. Kemarks. Total. Fer square inch. Pounds. 49 196 392 588 784 980 1,176 1, 225 1,274 1,323 1,372 1,421 1,470 1,519 1,668 1,617 1,662 Pounds. 5; 000 20,000 40, 000 60, 000 . 80, 000 100, 000 120, 000 126, 000 130, 000 136, 000 140,000 145, 000 150, 000 155, 000 160, 000 165, 000 169, 690 Inch. 0. .00073 . 00150 . 00230 . 01/316 . 00420 .00529 . 00569 . 00602 . 00G52 . 00700 .00771 . 00860 .01000 .01215 .017 Inch. 0. .00073 . 00077 . 00080 .00086 . 00104 .00109 . 00040 .00OS3 . 00050 . 00048 .00071 .00089 . 00140 .00215 .00455 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General summary. Tensile streDgth per square inch of origiDal streDgth ponuds.. 169,590 Elastic limit per square inch of original section do... 130,000 Elongation per inch after rapture inch.. .027 . Elongation per inch under strain at elastic limit) do... .00602 KeductioD in area after rupture, per centum of original section 37.8 Posilion of rupture 3^'. 4 inside the gauged section Cli!!aracter of broken surface fine silky H. Ex. 165 35 546 SQUARE AND FLAT STEEL WIRE. Marks, No. 430. Sectional area, ".0990 x' Gauged leDgth, 10". No. 4103. .0993 =.0098 square inch. Applied loads'. Eloii (ration per inch. Successive oloDjxatioji per iuch. Pormanent set. Successive permanent set. Ecmarks. Total. Per square inch. Pounds. 49 196 392 588 784 980 1,176 1,225 1,274 1,323 1,372 1,421 1,470 1,519 1,568 1,617 1,666 1,703 IPounds. 5,000 20, 000 40, 000 60, 000 80, 000 100, 000 120, 000 125, 000 130, 000 135, 000 140, 000 145, 000 150, 000 155, 000 160, 000 165, 000 170, 000 173, 780 Inch. 0. . 00075 .00163 . 002:i7 . 00327 .00417 . 00528 . 00656 . 00586 . 00625 . 00667 . 00722 . 00790 . 00885 .01000 .01220 .020 Inch. 0. . 00075 . 00087 . 00075 . 00000 . 00090 . 00111 . 00028 . 00030 . 00039 .00042 . 00055 . 00068 . 00095 .00115 .00220 . 00780 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. Genet'al summanj. Tensile strength per-square inch of original section pounds.. 173,780 Elastic lioiit per aquai-e inch of original section -. do... 135, OUO Elongation per inch after rupture : „ inch. . . 012 Elongation per inch under strain at elastic limit do... .00624 Keduotion in area aftei; rupture, per ceulum of original section 37.8 Position of rupture 2". 80 outside the gauged section Character of broken surface fiue Bilby SQUARE AND FLAT STEEL WIRE. No. 4104. Mark8,'No. 435, Sectional area, ".0995x".0994=.0099 square inch. Gauged length, 10". 547 Applied loads. Elongation per inch. Successive elongation per inch. Permanent ' set. • Successive permanent set. Kemarks. Total. Per Bouare inch. Poundt. 49 198 , 390 591 792 990 1,188 1, 2.37 "1,287 1,336 1,386 1,436 1,485 1,635 1,584 1,634 1,083 1,733 1, 782 1,812 Pounds. 5,000 20,000 40, 000 60, 000 SO, 000 100, 000 120, 000 123, 000 130, 000 ]35,.000 140, 000 145, 000 150,000 155, 000 160, 000 165, OOO 170, (100 175, 000 180. 000 183,030 Inch. 0. .00076 .00155 .00230 .00318 . 00408 .00511 .00533 . 00560 . 00592 . 00638 .00665 . 00706 .00765 .00820 . 00901 .01050 .015 .022 Inch. 0. .00076 . 00079 .00081 . 00082 . 00090 , 00103 .00022 .00027 .00032 . 00036 .00037 .00041 . 00059 . 00055 . 00081 . 00149 . 00150 .007 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General aummary. Tensile strength per sqnareinch of original section pounds.. 183,030 ElaBtic limit per squareanch of original section do... 145,000 Elongation per inca after rupture '. inch . . .014 SloDgation per inch undet strain at elastic limit do .. .00665 Eeduction in area after rupture, per centum of original section 32.3 Position of rnpture 2".5S outside the gauged section Character of broken surface fine silky 548 SQUAEE AND FLAT STEEL WIKE. No. 4105, Marks, Ko. 440. Sectional area, ".1001x".0998=.010 square iuch. Gauged length, 10". Applied loads. Elongation per inch. Successive el.inKation per inch. Permanent set. Successive permanent set. Remarlts. Total. Per square inch. Pounds. 50 200 400 600 800 1,000 1,200 1, 250 1, 300 1,350 1, 400 1,450 1,600 1,550 1,600 1,050 1,700 Pounds, ■ 6,000 20, 000 40, 000 00, 000 80, 000 100, 000 120, 000 125, 000 130, 000 135, 000 140, 000 145, 000 15(1, OUO 155,000 160, 000 105, 000 170, 000 174, 800 Inch. 0. . 00078 .00161 . 00250 , 00325 . 00400 .0(1191 . 00510 . 0Q537 . 00571 .00u05 . 00642 . 0U685 . 00735 . 00820 . 00941 .01325 Inch. 0. . 00078 . 00083 .00. SO . 00075 . 00075 .0(1091 .00i(19 . 00037 . 0U031 .00(134 . 00(137 . 00(143 .0(1050 .00085 .00121 .00384 Inch. 0. Inch, 0. Initial load. Elastic limit. Tensile strength. General summarij, Tenfflle atrengtli per square inch of original section pounds.. 174, SDO Elastic limit per square incli of original section do... 115, 000 Klougation per iucli atrer rupture .- inch.. . Ol'l EiOMfjation per inch untli-r strain at elastic litiiit. ^ ..do. . . . O0G42 Kediiciioniu area after rapture, per centum of uriy;iaal section 4-^ Position of ru[)tare 3".l inside tliegauged 3e1uction in area after rupture, per centum of original section 28,0 Position of rapture J 4". Qinaide the gauged section Character of broken surface fine silky 552 SQUARE AND PLAT STEEL WIRE. No. 4109, .Marks, No. 460. Sectional area, ".1002x".0998=.010 square inch. Gauged length, 10". Applied loads. Eloiifiation pc^- iucU. Successive elouffation per inob. Permanent set. Successive permanent set. Kemarts. Total. Perequaro inch. Pounds. 50 200 400 600 SOO 1,000 1,200 1,230 1,300 1,3.50 1,400 1, 430 1,500 1,550 1,600 1,650 1,700 1,730 1,788 Pounds. 5,000 20, 000 40, 000 60, 000 80, 000 100, 000 120,000 125, OUO 130, OUO 13S, 000 140, 000 1)5,000 150, 000 135, 000 160,000 163, 000 170, 000 173, 000 178, 800 Inch. 0. . 00080 .00142 . 00230 . 00303 . 00388 . 00467 .0U485 .00517 . 00338 . 00367 . 00600 . 00635 . 00680 . 00740 . 00840 .01070 .022 Inch. 0. . 00080 .00063 . 00088 . 00073 . 00083 . 0007P .00018 . 00033 .00021 .00.129 . 000 13 . 00u33 . 00043 , 00060 .00100 . 00230 .01130 Ineh. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. Gemral summary. Tensile strength per square inch of original section pounds.. 17S, 800 Elastic limit per square inch of original sectiou do... IfjO, OOO Elongation per inch afrer rupture , inch.. .((J8 Elongation per inch under strain at elastic limits do. .. ^O^i^iS Keduction in area after rupture, per centum of original section 39.0 Position of ruptuie 3". 75 inside the gauged secti n Character of broken surface .Sne silky SQUARE AND FLAT STEEL WIEE. 553 No. 4110. Marks, No. 465. Sectional area, ".1003 x ".1005 = .0101 square incli. Gauged length, 10". Applied loada. Elongation per inch. Successive elongation per inch. Permanent set. Successive permanent set. Eemarks. ' Total. Per square incn. Poitndg. 50 202 404 606 808 1,010 1,212 1,202 1,313 1,303 1,414 1.464 1,515 1, 605 1,616 ],(i66 1,710 Pounds. 5,000 20, 000 40, 000 60, 000 80, 000 100, COO 120, 1100 125, 000 130,000 136, 000 140, 000 145, 000 150,000 155,000 100, 000 lf5,000 109, 310 Inch. 0. .00087 .00158 . 00228 .00314 .00410 .00518 . 00537 . 00560 . 00603 . 00652 . 00092 . 00743 .00822 . 00900 .01275 Inch. 0. . 00087 .00071 .00070 .00080 . 00096 .00108 . 00019 . 00023 . 00043 . 00049 . 00040 . 00051 . 00079 .00138 .00315 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strpngth. General summary. Tensile strength per square incli of original section po;inds.. 169, .^10 Elastic limit per square Inch of original section -do. ..-130, 000 ElongHtioja per ijich after rupture ...-■ - — inch., . Oil Elongation per inch under strain at elastic limit do... . 005U0 KediicLion in area after rapture, per centara of original section i 39,6 Position of rupture 4".15 outside the gauged section Character of broken surface fine silky 554 SQUAJIE AND FLAT STEEL WIRE. No. 4111. Marks, No. 470. Sectional area, ".1003x".1001=.010 square inch. Gauged length, 10". Applied loads. Elongation per mcii. Soccessive elongation per inch. Permanent set.- Successive permanent set. Kemarks. .Total. Per square inch. Founds. 50 200 400 600 800 1,000 1,200 . 1,250 1,300 1,350 1,400 1,460 1,600 1,550 1,600 , 1, 650 Founds. 6,000 20, 000 40, 000 60, 000 80, 000 100,000 120. 000 125, 000 130,000 . 135, 000 140, 000 145, 000 150, 000 155, 000 160, 000 165, 000 Inch. 0. .00072 , . 00152 . 00228 . 00318 .00412 . 00500 .00520 . 00518 . 00590 . 00632 . 00680 . 00768 . 00883 . 01350 .024 Inch. 0. . 00072 . 00080 . 00076 . OU090 . 00091 . 00088 .00020 . 00028 . ('0042 . 000*2 . 00048 . 00078 . 00125 . 00467 .01050 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. G-eneral summary. Tensile strength per square inch, of original section - pounds.. 165,000 Elastic limit per square inch of original section do... 130,000 Elongation per inch after rupture inch.. .016 Elongation per inch under strain at elastic limit do... . 00548 Eeduction in area after rupture, per centum of original section : . . 39. Position of rupture 2".l outside the ganged section Character of broken surface fine silky SQUARE AND PLAT STEEL WIRE. 555 No. 4112. Marks, No. 475. Sectional area, ".1001x".0999=.010 square inch. Gauged length, 10". Applied loada. Successive eloDsation per inch. Permanent set. SacceHsive permanent set. Eemarks. Total. Per square incli. per inch. Pounds. 50 - 200 400 600 800 1,000 1,200 1, 260 1,300 1,360 1,400 1,460 1,500 1,550 1,600 1,650 1,689 Pounds. 5,000 20, 000 10, 000 60, 000 80, 000 100,000 120,000 125, 000 ' 130,000 135, 000 140, 000 146,000 ISO, 000 165, 000 100, 000 165,000 168, 900 Inch. Or .00070 .00162 .00232 .003^0 .00403 . 00620 .00540 .00570 . 00608 . 00G47 .00693 . 00765 .00813 .01010 . 01485 Inch. 0. .00070 . 00082 . 00080 . 00088 . 00083 .00117 . 00020 . 00030 .00038 . 00039 . 00040 . 00062 .00088 . 00167 . 00475 Inch. .0 Inch. 0. Initial load. Elastic limit. Tensile strength. General summary. Tensile strength per square mcb of original section pounds.. 168,900 Elastic limit per square inch of original section do,.. 140,000 Elongation perinea after i-upture inch.. .021 Elongation per inch under strain at elastic limit do-.. .00647 s Keductionin area after rupture, per centum of original section 31.0 Position of rupture -r 4" inside the gauged section Character of broken surface fine silky 556 SQUAEE AND FLAT STEEL WIRE. No. 4113. Marks, No. 480. Sectional area, ".0999x".0996=.010 square inch. Gauged length, 10". Applied lofid^. Elongation per incli. Successive elongation per inch. Permanent set. Successive permanent set. Eemarka. Total. • Per square inch. Pounds. 50 200 400 COO 800 1,000 1,200 1,260 1,300 1,350 1,400 1,460 1,500 1,550 1,600 1,650 1,700 1,742 Pounds. 6,000 20, 000 40, 000 60, 000 80, 000 100, 000 120, 000 125, 000 130, 000 136, 000 140, 000 145, COO 160, 000 155, 000 160, 000 165,000 170, 000 174, 200 Inch. 0. . 00078 .00163 . 00233 . 00318 . 00398 . 00498 . 00527 . 00550 .00687 .00613 .00655 . 00696 .00738 . 00810 .00950 . 01350 Inch. 0. .00078 . 00075 .00080 . 00085 . 00080 .00100 . 00029 . 00023 . 00037 . 00026 .00042 . 00040 . 00043 .00072 .00140 . 00400 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General summary. Tensile strength per square inch of original section pounds.. 174,200 JElawtic limit per square inch of original section do... 140, DUO Elongation per inch after rupture inch.. 0. 21 Elongation per inch under strain at elastic limit do... .00613 Keduption in area after rupture, per centum of original sect ion 34. Position of rupture. 3".6 inside the gauged section Character of broken surface fine silky SQUARE AND FLAT STEEL WIEE. No. 4114. Marks So. 485. Sectional area, ".GP94 x ".0989 = .0098 square inch. Gauged leugtb, 10". 567 Applied loads. Elongation per inch. Siiocesaive eluugation per incli. Permanent set, Suooessive permanent set. Eemarks. Total. Per square iucli. Founds. 49 196 392 588 784 980 1,176 1, 225 1, 274 1,323 1, 372 1, 421 1,470 1,519 1, .%8 1.617 1, (iOG 1,703 Pounds. 5,000 20, 000 40, 000 60, 000 80, 000 100, 000 120, 000 125, 000 130, 000 135, 000 14(1, 000 115, 000 150, 000 155. OuO 160,000 165, 000 170, 000 173, 670 Inch. .0 . 00072 .00148 .00227 . 00302 . 00382 . 00482 .00505 . 00528 .00568 .0(1600 . 00635 . 00683 . 00768 . 00895 .01293 .023 Inch. .0 .00072 . 00076 .00079 . 00075 . 00080 .00100 . 0U023 . 00023 . 00040 . 00032 . 00035 . 00048 . 00085 .00127 ■ . 00398 . 01007 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General summary. Tensile strength per squnre inch of original section , pounds.. 173, 670 Elastic limit pi*.r 8cia;iro inch of original section do... 145, JOO Eloiijiiition per inch after rnpiure inch.. . 021 Eluui^ation per inch under strain at elastic limit do... . 00635 Eeitucnon in area after rupture, per centum of original section 39. 8 Position of ruplure 3".7 outside the gauged section Character of broken surface fine silky 558 SQUAEE AND FLAT STEEL WIRE. No. 4115. Marks, No. 490. Sectional area, ".0993x.0997=.0099 square inch. Gauged length, 10". Applied loads. Elongation per iuch. Successive elonjzation per inch. Permanent set. Successive permanent set. 1 Eomarks. Total. Per square inch. Pounds. 49 198 396 594 . 792 1,168 1,237 1, 287 1,336 1,386 1,430 1,485 1,635 1,584 1,634 1,683 1,730 Pounds. 5,000 20, 000 40, ClOO 60, 000 80, 000 120, 000 125, 000 130,000 135, 000 140, 000 145, 000 150, 000 155, 000 160, 000 165, 000 170, 000 ~ 174, 750 Inch. 0. . 00077 .00162 .00247 . 00332 . 00.530 . 00550 . 00578 .00618 . 00660 . 00717 . 00767 . 00825 . 00937 .01130 - . 01425 Inch. 0. . 00077 . 00085 . 00085 . 00085 . 00098 . 00020 '. 00028 . 00040 . 00042 .00057 . 00050 . 00058 .00112 . 00193 .00295 Jnc7^. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. Genei'al summari/. Tensile strength per square inch of original section pounds.. 174, 750 Elastic limit per square inch of original section do , . 135, 000 Elongation per inch after rupture 1 inch.. .020 Elongation per inch under strain at elastic limit do... . 00618 Kednction in area after rupture, per Centura of original section 40. 4 Position of rupture 3". 55 inside the gauged section Character of broken surface fine silky SQUAEE AND FLAT STEEL WIEE. No. 4116. Marks, No. 495. Sectional area, ".1000 x". 1000 =.010 square inch. Gauged length, 10". 559 Applied loads. Elongation per inch. Saoceasive elougation . per inch. Permanent set. Successive permanent set. Remarks. .Total. Per square inch. Pounds. ' 60 200 400 600 < 800 1,000 1,200 1,250 1,300 1,350 1,400 1,450 1,600 I,65C 1,600 1,641 ■ Pounds. 5,000 20,000 40,000 80,000 80,000 100, 000 120,000 125,000 130, 000 135, COO 140, 000 145, 000 150, 000 155, 000 160, 000 164, 100 Inch. 0. . 00076 . 00155 .00248 . 00328 . 00460 .00667 .00585 .00620 . 00062 .00715 . 00785 .00890 .01075 .01507 ■Iwh. .0 .80076 . 00079 . 00093 . 00080 . 00122 .00117 . 00018 .00035 . 00042 .00063 . 00070 . 00105 . 00185 . 00432 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General summary. Tensile atreiig;tli per square inch of original section pounds.. 104,100 KJastio limit per square inch of original section .' do 135,000 Elongation per inch after rupture inch.. .014 Elongation per inch under strain at elastic limit do 00662. Bednctiou in area after rupture, per centum of original section 39. Position of rupture 1",2 outside the gauged section Character of broken surface fine silky 560 SQUARE AND FLAT STEEL WIRE. No. 4117. Marks, No, 500. Sectional area, ".0997 x ".0997 =.0099 square inch. Gauged length, 10". AppHed loads. Elongation per inch. Successive elongation per inch. Permanent set. Succes.sive pemiauent set. Eemarks. Total. Per square inch. Pounds. 49 198 396 694 792 990 1,188 1,237 1,287 1,336 1,386 1,436 1,485 1, 635 1,584 1, 634 1,683 1,733 1,763 Pounds. 5,000 20, 000 40, 000 00, 000 80, COO 100, 000 120, 000 125, 000 130, 000 135, 000 140, OUO 145, 000 150,000 165, Oi'O' 100, 000 165, 000 170, 000 175,000 178, 080 Inch. 0. .00073 . 00159 . 00234 . 00322 . 00408 . O0502 . 00527 . 00550 . 00578 . 00608 . 00642 . 00082 .00738 . 00808 .001110 .01110 .018 Inch. 0. . 00073 . 00080 . 00075 . 00088 . 00086 . 00094 . 00025 . 00023 . 00028 . 00030 . 00034 . 00040 . 000.i6 . CO07O .00102 . 00200 .0069 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strengtli. General sinnma^'y, TeDsile strength per square ijj^h of original section pounds.. 178,080 Elastic limit piT square inch of original section do... 14r>, OUO Elongalion per inch after rupture inch.. . 023 Elongation per inch under strain at elastic limit do... .00642 Eeduction in area after rupture, per centum of original section 41.4 Position of rupture 4".l inside the gauged secfion Character of broken surface fine silky SQtJAKE AND FhXI STEEL WIRE. 561 Marks-, No. 505. Ko. 4118, Sectional are,a, ".0996 x ".1000=. 010 square inch. Gauged length, 10". Applied loads. Elongation per incli. Sucoesaive elongation per inoli. Permanent set. Successive permanent set. . Bemarks. Total. Per square inch. Pounds. 50 200 400 600 800 1,000 1,200 1,250 1,300 1,350 1,400 1,450 1,500 1,630 1,600 1,650 1,700 1,750 1,800 Potmds. ■ 5, 000 20,000 40, 000 60,000 80, 000 100,000 120, 000 125,000 130, 000 135, 000 140, 000 145, 000 150, 000 155,000 160, 000 166, 000 170,000 176, 000 180, 000 Inch. 0. . 00079 . 00162 .00239 . 00315 .00415 . 00602, .00527 . 00650 . 00577 . 00609 . 00642 . 00683 .00727 . 00787 . 00866 .01017 .014 .020 Inch. 0. . 00079 . 00083 .00077 .00076 .00100 .00087 . 00026 . 00023 .00027 . 00032 . 00033 . 00041 . 00044 . 00060 . 00179 . 00161 . 00383 .006 Inch. Inch. 0. Initial load. Elastic limit. Tensile strength. General summary. - Tensile strength per square inch of original section poundB.. 180,000 Elastic limit per square inch of original section do... 145,000 Elongation per inch after rupture » inch,. .Oil Elongation per inch under strain at elastic limit do... .00642 Beduction in area after rupture, per ceutam of original section 41. Position of rupture 3". 4 outside the gauged section Character of Broken surface^ \ fine siky H. Ex. 165 36 562 SQUARE AND FLAT STEEL WIRE. Fo, 4119. Marks, No. 610. Sectionalarea, ".1000 x ".1000 = .010 square inch. Gauged length, 10". Applied loads. Elongation per inch. Sncoessive elongation per inoli. Permanent set. Snocesslve permanent set. Eemarka. Total. Per square incli. Pmmds. 50 200 400 600 800 1,000 1,200 1,250 1,300 1,350 1,400 1,450 1,600 1,550 1,600 1,650 1,700 1,750 1,784 Pounds. 5,000 20, 000 40, 000 60, 000 80,000 100, 000 120, 000 125, 000 130, 000 135,000 140, 000 145, 000 150, 000 155, 000 160, 000 165, OOO 170, 000 175, 000 178,400 Inch. 0. . 00075 -. 00150 .00224 .00322 .00397 .00495 .00625 .00545 . 00564 . 00590 . 00622 . 00665 . 00720 .00791 . 00050 .015 .024 Inch. 0. .00075 . 00075 .00074 . 00098 . 00075 . 00098 .00030 . 00020 . 00019 .00026 . 00032 . 00043 . 00055 .00071 . 00159 .00550 .009 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strengtli. General summary. Tensile strength per square inch of original section Iflotinds.. 178,400 Elastic limit per square inch of original section do... 145, 000 Elongation per inch after rupture .inch.. .031 Elongation per inch under strain at elastic limit do... .00622 Beductlonin area after rupture, per centum of original section 42.0 Position of rupture 2" inside the gauged section Character of broken surface .......fine silky SQUARE AND FLAT STEEL WIRE, No. 4120. Marks, No. 515. Sectional area, ".0982x".0986=.0097 square inch. Gauged length, 10". 563 Appliud loads. Elongation per inch. Sacoessive elongation per inch. Permanent sot. Sacoessive permanent sot. Eemarks. ToUl. Per square inch. Pounds. 48 194 388 682 776 970 1,164 1,212 1,261 1,309 1, 368 1,400 1,455 1,603 1,552 1,600 1,649 1,697 1,746 Pounds, 5,000 20, 000 40,000 60, 000 80, 000 100, COO 120, 000 125, 000 130, 000 135, 000 140, OOO 145, 000 150, 000 156, 000 160, 000 165, 000 170,000 175. 000 180, 000 Incli. 0. . 00077 . 00152 . 00237 . 00322 .00412 . 00515 . 00535 . 00564 . 00608 . 00630 . 00677 . 00719 . 00787 . 00853 .00986 .01190 .018 .028 Tneh. 0. . 00077 . 00075 . 00085 . 00085 . 00090 .00103 .00020 . 00029 . OOOU . 00022 . 00047 . 00042 . 00068 . 00066 .00133 . 00204 .0061 .010 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. Genwal summary. Tensile strength per sqnare inch of orfginal aectiun pounds.. 180,000 Elastic limit per square inch of original section * do... 150,000 Elongation per inob after rupture inch.. .020 Elongation per inch under strain at elastic limit do... .00719 Ketluction in area after ruptare, per centum of original section 37.1 Position of rupture - 2".3 outside the gauged section Character of broken surface fine silky 564 SQUARE AND FLAT STEEL WIRE. No. 4121. Marks, No. 520. Sectional area, ".0996 x ".1000=. 010 square inch. Gauged l6ngtti, 10". Applied loads. Elongation per inch. Sncoeasive elonjiation per incb. Permanent set. Successive permanent set. Eemarl^s. Total. Per square incb. Pounds. 60 200 400 600 800 1,000 1,200 1,250 1,300 1,350 1,400 1,450 1,500 1,550 1,600 1,650 1,700 1,750 Pounds. 5,000 20, 000 40, 000 60, 000 80, 000 100, 000 120, 000 125, 000 130, 000 135, 000 140, 000 146, 000 150,000 165, 000 160, 000 165, 000 170, 000 175, 000 inch. 0. . 00075 . 00158 . 00238 . 00322 . 00392 . 00481 . 00501 . 00531 . 00657 . 00592 . 00627 . 00666 . 00705 .00778 . 00878 . 01170 .022 Inch. 0. . 00075 , 00083 . 00080 . 00084 . 00070 . 00089 . 00020 . 00030 . 00026 . 00035 . 00035 . 00033 . 00045 . 00073 .00100 . 00292 .0103 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. Geneml summary. Tensile strength per square inch of original section pounds.. 175,000 Elastic limit per square inch of oiiginal" section do... 150, 000 Elongation per inch after rupture inch.. . 0!3 Elongation per inch under strain at elastic limit do... .00660 Keductionin area after rupture, per centum of original section 41.0 Positioii of rupture 4". 3 outside the. gauged eeotion Character of broken surface . . .;. '. fine silky SQUARE AND .FLAT STEEL WIRE. 665 Fo. 4129. Marts, No. 525. Sectional area, ".0986x".0989=.0098 square inch. Gauged length, 10". Applied loada. Succeealve elongation per inch. Permanent set. SnccesslTe permanent set. Eemarks. Total. Per square inch. per inch. Pounds. 49 196 392 688 784 980 - 1, 176 1, 225 1,274 1,323 1,372 1,421 1,470 1,519 1,568 1,617 1,651 Pounds. 5,000 20, 000 40, 000 60,000 80, 000 100, 000 120, 000 125, 000 130, 000 135, 000 140,000 145, 000 150,000 155, 000 160, 000 165, OOO 168,470 Inch. 0. . 00073 . 00168 . 00250 . 00311 .00422 . 00500 . 00530 . 00552 . 00578 . 00617 .00682 . 00727 . 00838 .00970 . 01235 Inch. ■ 0. . 00073 . 00095 .00083 . 00061 .00111 . 00078 . O0O3O . 00022 .00026 . 00039 . 00065 . 00046 .00111 . 00132 . 00265 Inch. 0. I7ich. 0. Initial load. Elastic limit. Tensile strength. General summary. Tensile strength per square inch of original section potmils-. 168,470 Elastic limit per square inch, of original section do... 140,000 Elongatiouper inch after mptnre inch.. :007 Elongation per inch under strain at elastic limit .; do..- .00617 Reduction in area after rupture, per centum of original section 37.8 Position of rupture .5".2 outside the gauged section Character of broken surface .fine silky 566 SQUARE AND PLAT STEEL WIRE. ' Fo. 4130. Marks No. 535. Sectional area, ".0998 x ".0993 = .0099 square inch. Gauged length, 10". Applied loada. Elongation per inch. Successive elongation per incli. Permanent set. Successive permanent set. Bemarkg. Total. Per square inch. Pounds. 49 198 . 396 594 792 990 -1,188 1,237 1,287 1,336 1,386 1,436 1,485 1,535 1,584 1,634 1,683 1,730 Founds. 5,000 20, 000 40, 000 60, 000 80, 000 100,000 1211, 000 125, 000 130, 000 135, 000 140, 000 H5, 000 150, 000 155, 000 160, 000 165,000 170, 000 174,750 Jnch. 0. . 00075 .00165 . 00245 . 00312 . 00407 .00485 .00495 .00512 - .00547 . 00575 .00597 .00619 . 00669 . 00737 . 00842 .00922 Inch. 0. .00075 . 00090 . 00080 .00067 .00095 .00078 .00010 . 00017 .00035 .00028 . 00022 .00042 . 00030 . 00068 . 00105 .00080 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strengtij. General summary. Tensile strength per sqnare inch of original section pounds.. 174,750. Elastic limit per square inch of original section do 155, 000 Elongation per inch after rapture ■. inhc. .022 Elongation per inch under strain at elastic limit do 00G69 Beductipnin area after rapture, per centum of original section 43.4 Position of rupture 3". 8 inside the gauged section Character of broken surface fine silky SQUARE AND FLAT STEEL WIEE. No. 4131. Marks, No. 540. Sectional area, ".0984x".0983=.0097 square inch. Gauged length, 10". 567 Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. Successive permanent set. RemsLTka. Total. Per square inch. Founds. 48 194 388 532 776 970 1,164 1,212 1,261 1,309 1,358 1,406 1,456 1,603 1,552 1,600 1,649 1,697 1,740 1,794 1,836 Pounds. • 6, 000 20, 000 40,000 60, 000 80, 000 100, 000 120, 000 ' 125, 000 130, 000 13f), 000 140, 000 145, 000 160, 000 155,000 160, 000 165, 000 170, 000 175, 000 180, 000 185, 000 189, 280 Inch. J. . 0007'? .00169 . 00247 .00328 . 00422 . 00483 .00310 .00540 . 00660 .00590 . 00620 . 00002 . 00680 . 00738 .00782 . 00840 .00938 .013 .019 Inch. 0. .00076 . 00093 .00078 . 00081 . 00094 . 00063 . 00031 . 00024 . 00026 . 00024 .00030 .00042 .00018 ■ .00058 .00044 . 00058 . 00098 . 00302 .006 Inih. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General summary. Tensile strength per square inch of original section pounds . . 189, 280 Elastic limit per square inch of original section do... 155, OOO Elongation per inch after rupture ; inch.. .016 Elongation per inch under strain at elastic limit do... .00680 Seduction in area after rupture, per centum of original section 32. Position of rupture 3".7 outside the ganged section Character of broken surface fine silky 568 SQUARE AND FLAT STEEL WIKE. No. 4132. Marts, ISTo. 545. Sectional area, ".0990 x ".0991 == .0098 square inch. jaugecl length, 10". Applied loads. Successive elongation per inch. Permanent set. Successive permanent set. Bemarks. Total. Per square inch. per inch. Pounds. 49 196 Ptmnds. 5,000 20, 000 40, 000 60, 000 80, 000 100,000 120, 000 125, 000 130, 000 135, 000 140, 000 145, 000 150, 000 155, 000 160, OOO 105, 000 169,390 Inch. 0. . 00081 . 00169 . 00262 .00345 .00430 . 00526 .00545 . 00.570 .00605 . 00642 .00688 .00748 . 00845 .01050 .017 Inch. 0. . 00081 .00088 .00093 .00083 .00085 .00096 . 00019 . 00025 .00035 . 00037 . 00046 .00060 . 00097 . 00205 . 00650 iTich. 0. Inch. 0. Initial load. Elastic limit.' Tensile strengths 392 588 784 980 1,176 1,225 1,274 1,323 1,372 1,470 1,519 1,568 1,617 1,660 General summary. Tensile strength per sqnare inch of original section pounds.. 169,390 Elasticlimitper square inch, of original section do... 140, 000 Elongation per inch after rupture ■- Inch.. .021 Elongation per inch under strain at elastic limit do... .00642 Iteductioniu area after rupture, per centum of original section -. 39.8 Position of rupture , ".5 outside the gauged section Character of broken surface fine silky SQUAEE AND FLAT STEEL WIKE. No. 4133. Marks, No. 550. Sectional area, ".0985 x ".0988 =.0098 square inch. Gauged length, 10". 569 Applied loads. BloDgation per inch. Successive elongation per inch. Permanent set. Successive permanent , set. Remarks. Total. Per square inch. Pounde. '49 196 392 588 784 980 1,176 1,225 1,274 1,323 1,372 1,421 1,470 1,519 1,568 1,617 1,638 Pounds. 5,000 20,000 40,000 60, 000 86, 000 100,000 120, 000 125, 000 130, 000 135, 000 140, 000 145, 000 150,000 155, 000 160, 000 165, 000 167,140 Inch. 0. .00081 . 00167 . 00260 .00345 . 00453 . 00568 . 00590 .00631 . 00683 . 00740 .00811 .00925 .01118 .014 .022 Inch. 0. . 00081 . 00086 . 00093 .00085 .00108 .00115 .00022 .00041 .00052 .00057 .00071 .00114 . 00193 .00282 .008 Infh. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General summary. Tensile strength per square inch of original section pounds.. 167,140 Elastic limit per sgnareinchof origin^ section ...do... 130,000 Elongation per inch after rapture w inch . . . 021 Elongation per inch under strain at elastic limit - , do. . . . 00631 Bedaction in area after rapture, per centum of original sectioQ 46. 9 Position of rapture ..4" .3 inside the gauged section Character of broken surface fine silky 570 SQT7AEE AND FLAT STEEL WIEE. No. 4134. Marks, No. 555. Sectional area, ".0994 x ".0995 =.0099 square inch. Gauged length, 10". Applied loads. ElongatiOD per inch. Successive elongation per inch. Permanent set. Successive permanent set. Total. Per square inch. Kemarks. Pounds. 49 198 396 694 792 '990 1,188 1,237 1,287 1,336 1,386 1,436 1,485 1,535 1,584 1,618 Pounds. 5,000 20, 000 40, 000 60, 000 80, 000 100, 000 120,000 125, OOO 130, 000 135, noo 140, 000 145, 000 150, 000 155, 000 160, 000 163, 430 Inch. 0. . 00079 . 00158 .00241 . 00335 .00428 .00535 . 00562 . 00608 . 00660 .00713 .00820 .00922 .01190 .020 Inch. 0. . 00079 . 00079 . 00083 .00094 . 00093 .00107 . 00027 .00046 . 00052 . 00053 .00107 .00102 . 00268 .0081 Inch. 0. Imh. 0, Initial load. Tensile strength. General summary. Tensile strength per square inch of original section pounds - . 163, 430 Elastic limit per square inch of original section, do... 125,000 Elongation per inch after rupture inch.. . 027 Elongation per inch under strain at elastic limit do... .00562 Keduction in area after rupture, per centum of original section 40. 4 Position of rupture .4". 3 inside the gauged section Character of broken surface. fine silky SQIJARE AND FLAT STEEL WIRE. 671 No. 4135. Marks, JNo. 500. Sectional area, ".0986 x ".0991 = .0097 square Gauged leugth, 10". inch. Applied loads. Successive elongation per iucli. Permanent sot. Successive permanent set. Remarks. Total. Per square iuoh. per inch. Pounds. 18 191 383 582 776 970 1,161 1,212 1,201 1,309 1,358 1,406 1,155 1,503 1,552 1,600 1,602 Pounds. 5,000 20, 000 10,000 eOrOoo 80, 000 100, 000 120,000 125, 000 130, 000 135, 000 140, 000 115, 000 150,000 155, 000 160,000 165, 000 165, 150 Inch. 0. . 00083 . 00165 . 00248 . 00327 .00432 .60556 .00573 . 00630 . 00677 . 00721- . 00807 .00895 .01037 .014 .022 Inch. 0. . 00083 . 00082 . 00083 .00079 . 00105 . 00122 . 00017 . 00017 . 00057 . 00041 . 00086 .00088 . 00102 . 00313 .008 Inch. Inch. 0. Initial load. Elastic limit. Tensile strength. General summary. Tensile strength per square inch of origtual section pounds.. 165, 350 Elastic limit per square inch of original secfcion". do... 125,000 Elougat ion per inch af i or rapture inch. . . 020 Elongation per inch under strain at elastic limit do... .00573 "Reduction in ai:ea after rapture, per centum of original section 40.2 Position of rupture >, ".9 inside the gauged section Character of broken surface fine allky 572 SQUARE AND FLAT STEEL WIEE. Marks, No. 565. Sectional area, ".0989 x ".0996 Gauged length, 10". No. 4136. =".0098 square inch. Applied loads. Elongation por inch. Successive elonfral ion per inch. Permanent set. Suopessive permanent set. Kemarks. Total. Per square inch. Pounds. 49 196 392 588 784 980 1,176 1,225 1,274 1,323 1,372 1,421 1,470 1,519 1,508 1,606 Powndt. 5,000 20, 000 40,000 60, 000 80, 000 100, 000 120,000 125, 000 130, 000 136, COO 140, 000 145, 000 150, 000 155,000 160, 000 163,880 Inch. 0. .00080 .00177 . 00260 .00350 .00458 .00585 . 00605 . 00642 . 00698 . 00768 . . 00830 . 00945 . 01200 .017 Inch. 0. . 00080 . 00097 . 00083 .00090 .00108 .00127 . 00020 .00037 . 00066 . 00070 . 00062 .00115 .00255 .005 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. _ General aummary. Tensile strength ptr square ineli of original section pounds. . 163, 880 Elastic limit per square inch of origioal section do . . . 1 30, 000 Elongation per inch after rupture inch.. .022 Elongation per inch under strain at elastic limit do... .00642 Beductlon in area after rupture, per centum of original section 39.8 Position of mpture 1". 4 inside the gauged section Character of broken surface fine silky Marks, 'So. 570. Sectional area, ".0997 x ".0996 Gauged length, 10". SQUARE AND FLAT STEEL WIRE. No. 4137. 573 :.0099 square inch. Applied loads. Saocessiye elongation per inch. Permanent set. Successive permanent eet. Bemarks. Total. Per square inch. per inch. Pounds. 19 • 198 396 594 792 990 J, 188 1,237 1,287 1, 336 1,386 1,436 1,485 1,535 1,581 1,634 1,683 1,736 Pounds. 6,000 20, 000 40,000 60, 000 80, OOO 100, 000 120, 000 125, 000 130, 000 135, 000 140, 000 146, 000 150,000 155, 000 1450, 000 165, 000 170,000 175, 800 Inch. 0. .0007D . 00170 .00212 . 00332 . 00122 . 00622 .00550 .00568 . 00610 .00640 .00677 .00728 .00778 .00815 .010 .014 Inch. 0. .00079 . 00091 .00072 .OOUO . 00090 .00100 .00028 .00018 .00012 . 00030 .00037 .00051 .00050 ■ .00067 . 00155 .001 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile etrengtli. ^ General summary. Tensile strengtli per square inch of original section pounds.. 175,350 Elastic limit per square inch of original Qeotion do... 145,000 Elongation per inch after rupture ^ inch... .010 Elongation per inch under strain at elastic limit. do... .00677 deduction in aree after rupture, per centum of original section 32.3 Position of rupture 4". 7 outside the gauged section Character of broken surface fine silky 574 SQUAEE AND TLAT STEEL WIRE. No. 4138. Marks, No. 675. Sectional area, ".0101 x ".0100= .010 square inch. Gauged length, 10". Applied loads. Elongation per inch. Successive elODisation per inch. Permanent set. Successive permanent set. Remarks. Total. Per sqnare inch. Pounds. 50 200 400 > 600 800 1,000 1,200 1,260 1,300 1,350 1,400 1,450 1,500 1,550 1,600 1,650 1,700 1,750 1,800 1,860 1,877 Pounds. 5, 000 20, 000 40,000 60, 000 80,000 100, 000 120, 000 125, 000 130, 000 135, 000 140, 000 145, 000 150, 000 155, 000 160, 000 165, 000 170, 000 175, 000 180, 000 185, 000 187, 700 Inch. 0. .00080 .00155 .00225 . 00300 . 00390 . 0046S . 00488 . 00507 . 00524 . 00541 . 00570 . 00600 .00628 . 00667 . 00710 . 00771 . 00870 .01260 .020 Inch. 0. . 00080 .00075 . 00070 . 00075 . 00090 . 00075 . 00023 . 00019 . 00017 . 00017 .00029 . 00030 .000^8 . 00039 .00043 .00061 .00099 . 00390 . 00740 Inch. 0. Inch. 0. laitial load. Elastic limit. Tensile strength. General summary. Tensile strength per square inch of original section pounda . . 187, 700 Elastic limit per square inch of or.ginal section do... 160, 000 Elongation per incb after rupture inch. . . 023 Elongation per inch under strain at elastic limit - do... .00667 Boductionin area after rupture, per centum of original section 31.0 Position of rupture 2".3 inside the gauged section Character of broken surface fine sUky SQUARE AND FLAT STEEL WIRE. No. 4139. Marks, No. 580. Sectional area, ".0990 x ".0991 =,0098 square inch. Gauged length, 10". 575 Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. Siircossive permanent set. Semarks. Total. Per square inch. Pomids. 19 196 392 588 781 , 980 1,176 1,225 1,271 1,323 1,372 1,121 1,170 1,519 1,668 1,617 1,666 1,715 1,761 1,792 Pounds. 5,000 20, 000 40, 000 60, 000 80, 000 100, 000 120, 000 125, 000 130, 000 135, 000 UO, 000 lis, OOO 160, 000 155, 000 160.000 . 165, 000 170,000 175, 000 180, 000 182, 860 Inch. 0. . 00077 . 00170 . 00233 .00315 .00105 . 00180 . 00500 .00522 . 00539 . 00567 .00587 .00626 . 00681 .00720 .00780 .00887 . 01130 .021 Inch. 0. .00077 .00093 . 00063 . 00082 . 00090 .00075 . 0002O .00022 . 00017 .00028 . 00020 .00039 . 00055 .00039 . 00060 .00107 .00243 .0097 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General summary. Tensile strength per square inch of original section pounds.. 182,860 Elastic limit per square inch of original section do. . . 150, 000 Elongation per inch dfter rupture inch,. .022 ^loDgation per inch under stxain at elastic limit do... .01)626 Keduction in area after rupture, per centum of original section ;. 37.8 Position of rupture, l'<,9 inside the ganged section Character of broken surface fine silky 576 SQUARE AND FLAT STEEL WIBE. 2S"0. 4140. Marks, No. 585. Sectional area, ".0996 x ".0996 =.0099 square inch. Gauged length, lO"- Applied loads. Elongation per inch. Snccessive elongation periuch. Permanent set. Successive permanent set. Eemarks. Total. Per square inch. rounds. 49 198 396 594 792 990 1.188 1,237 1,287 1,336 1,386 1,436 1,485 1,535 1,584 1,634 1,683 1,704 Pounds. 5,000 20,000 40,000 60,000 80,000 100,000 120,000 125, 000 130, 000 135, 000 140,000 145, 000 150, 000 155, 000 160, 000 165,000 170, 000 172,120 Inch. 0. .00078 .00162 .00240 . 00317 . 00407 .00495 . 00512 .00531 .00571 .00607 . 00641 .00691 . 00775 .00910 .020 .028 Inch. 0. ,00078 . 00084 . 00078 . 00077 .00090 . 00088 . 00017 . 00019 . 00040 . 00036 . 00034 . 00050 . 00084 . 00135 .0109 .008 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General summary. Tenfiile strength per square inch of original section ponnds . . 172, 120 Elastic limit per sqaare inch of original section do... 145,000 Elongation per inch after ruptnre inch.. , 018 Elongation per inch under strain at elastic limit do... .00641 Bedactionin area after ruptare, per centum of original section 41.4" Position of rupture 4". 7 outside the gauged section Character of broken surface fine silky - SQUARE AND FLAT STEEL WIRE. ]^0. 4141. Marks, 590. Sectional area, ".0993x".0995=.0099 square inch. Gauged length, 10". 577 Applied loads. Elongation per inch. Saccesslve elongation per Inch. Permanent ' set. Successive permanent set. ' Eemarts. Total. Per square inch. Pounds. 49 198 306 594- 792 090 1,188 1,237 1,287 1,336 1,386 1,436 1,485 ],535 1,684 1,634 1,683 1,690 Pounds. 5,000 20,000 40^000 60, 000 80, 000 100, 000 120, 000 125, 000 130, 000 135, 000 140, 000 145,000 150, 000 155, 000 160, 000 165, 000 170, 000 170, 710 Inch. 0. . 00077 .00167 . 00236 . 00330 . 00425 . 00507 700527 .-00547 . 00580 .00610 . 00658 . 00706 . 00778 .00925 .014 .024 Inch. 0. .00077 . 00090 .00069 .00094 .00095 . 00082 . 00020 . 00020 .00033 . 00030 .00048 .00048 . 00072 . 00147 .00475 .010 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. . ... - General eummwry. Tensile strength per square inch of orisiinal section pounds.. 170,730 !E1^8tio limit per square Inch of original section do . . . 140, 000 Elongation perinea after rupture inch.. .017 Blon^ation per inch under strain at elastic limit do... .00610 Keduction in area after rupture, per centnra of original section 38. 4 Position of rupture ".8 outside the gauged section -Character of broken surface , fine silky H. Ex. 165 — -37 578 SQUARE AND FLAT STEKL WIRE. 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Hc>0<=>Oi3>i-(OO00000000000i--*0O^Hi-ii-iiHiHi-HOOi— lOr-l'-IOi-IO O'O O 30000000000000^^^0 t-ooeo . ,_ ^ 00 00 a> oa A n 00 o OD 00 o> o CO CO CO 00 .~ w. w. _- — w. », .^ w. -. — -.—.«—.«..«-». 0O0000OO0=)0iH000000O0O0OO0OO00000O0i-l0r- COOOC-TCOMWOr-'MOCOMMeOt-OOeDinWlftCOmiO'HI- ^ . ^. ^COOOOOOSOCO»00000)OOOOOOSCOOOOiO)0)QOCSOS00030iOOO>QOOJOSOOOO 03a}o>09aiS3a>0}a30>oo03no3Aa3o>c}ooo^aiQ>o>o>c3AC3o>ooo3090o>0(S030c:aioia>OiCT OOOOOOOOOOOrHOOOOOOOOOOOOOOOOOOOr-IOOiHi-liHrHi-HOOOTHOOrHOOOOOO oiftowowgioooifloiftiflooiftowoiooiaowou5o>ftpooiooiooino>nairtoinomoiftoirsioom ipiomwt-t^oooso>Hf-(racvim-«ia»t>i>ooooo>osooi-HiMWcviMm**'«*rioiooot-f-oooooi0500r^.-^wcsico'*-^^ 3OOOOOOi-'i~li-Hi--l.-H>HC^WCMCr3OT0 682 SQUARE AND FLAT STEEL WlEE. OS I 2 i £ a ■M o a a \ l-l o g ti Q ^ '.6 6 6 666 6 66 eS ft gQfifiOfiOPflP ^ ^ gffiTfifqcocoooO'^-^ 4s|§g||||g 1 rito oooooooo if if if II if if if II if o oaixoc-caMootDoo C3 c> r~ r^'i^ 00 00 r- 1^ b- ^ 5 OOOOOOOOO -s X X X X X X X X X d (Mt-(OC- Is |§|giili§g i " a £ s- ® PU ■s o:coaON«o«ot-e4Tl40 a 1 1 £ escription. 595 Surface of ■wire. Nominal dimen- Blons. Actual dimensions. Weight of coil. Diameter of curve of wire. One end. Other end. Pounds. Ounces. In coil. When released. Tinned. ".15X".15 ".1506X".15O2 ". 1486 X ".1493 21 17" 32" The wire coiled over au arbor equal in diameter to its diagonal with- out fracture. The general surface of the wire was smooth and the corners rounded to about ".01 radius. The tinning appeared continuous without naked spots, but of ex- cessive thickness in places. Along one surface locally the tin was found to be ".013 thick, and generally the coating appeared to be from ".0003 to ".0005 thick. No. 3784. Sectional area, ".1488x ".1496=.022 square inch. Gauged length, 10". Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. Successive permanent set. Eemarks. Total. Per square inch. Pounds. no 440 880 1,320 1,760 2,200 2,310 2,420 2,530 2,640 2,760 2,860 2,970 3,080 8,190 3,300 3,410 3,520 3,630 3,678 Founds. 6,000 20, 000 40,000 60, 000 80, 000 100, 000 105, 000 110, 000 115,000 120, 000 125, 000 130, 000 135, 000 140, 000 145, 000 ISO, 000 155, 000 160, 000 166, 000 167, 180 Inch. 0. . 00066 . 00137 .00211 . 00294 .00388 .00417 .00444 . 00473 . 00507 . 00648 .00688 . 00638 • .00690 . 00771 . 00876 . 01029 .015 .020 Inch. 0. . O0066 . 00071 .00074 . 00083 .00094 . 00029 .00027 , 00029 .00034 . 00041 .00040 . 00050 .00062 . 00081 . 00105 . 00153 .00471 .005 Inch. 0. Inch. 0. laitialload. Elastic limit. Tensile strength. General summary. Tensile strengihper square inch of original section pounds.. 167,180 Elastic limit per square inch, of original section do... 120' 000 Elongation per incli after rupture inch'.. '.012 Elongation per inch under strain at elastic limit , do.!.' .00507 Keduction in area after rupture, per centum of original section 27 3 Position of rupture 2".9 outside the gauged section Character 01 broken surface fine silky 596 SQUARE AND FLAT STEEL WIRE. No. 3785. Sectional area, ".1495x".1490=.022 square inch. Gauged length, 10". Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. Succeesive permanent set. Eematks. Total. Per square inch. Founds. 110 440 880 1,320 1,760 2,200 2,310 2,420 2,530 2,640 2,750 2,860 2,970 3,080 3,190 3,300 3,410 3,520 3,630 3,650 Pounds. 5,,000 20, 000 40, 000 60, (100 80, 000 100, 000 105, 000 110, 000 115, 000 120, 000 125, 000 130, 000 135, 000 140, 000 145, 000 1,60, 000 155,000 160, 000 165, 000 165, 910 Inch. 0. . 00059 . 00139 . 0021* . 00305 . 00413 .00439 . 00478 .00519 .00564 . 00614 . 00671 . 00740 .00829 . 00950 .012 .014 .019 .029 Inch. 0. .00059 . 00080 .00076 . 00090 .00108 . 00026 .00039 . 00041 . 00045 . 00050 . 00057 . 00069 . 00089 . 60121 .0025 .002 .005 .010 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General summar\j. Tensile strength "per square inch of original section pounds.. 165, 910 Elastic limit per square inch of original section do... 110,000 Elongation per inch after rupture inch.. .024 Elongation per inch under strain at elastic limit do... . 00478 Keduclion in area after rupture, per centum of original section 29. 1 Position of rupture at middle of specimen Character of broken surface ^ fine silky SQUARE AND FLAT STEEL WIRE No. 3786. .Sectional area, ".I486 x ".1506 = .022 square inch. Gauged length, 10". 597 Applied loads. Elongation per iuch. Successive elongation per inch. Permanent set. SaccesaiTC permanent set. Eemarlcs. Total. Per square inon. Pounds. 110 440 880 .1,320 1,760 2,200 2,310 2,420 2,630 2,640 2,7.50 2,860 2,970 3,080 3,190 3,800 3,410 3, .520 3,630 3,740 Pounds. 5,000 20,000 40,000 60, 000 80, 000 100, 000 106, 000 110, 000 115,000 120, 000 126, 000 130, 000 135, 000 140,000 145,000 160,000 155, 000 160, 000 165, 000 170, 000 Inch. 0. . 00053 .00128 .00205 . 00284 . 00369 . 00398 . 00419 . 00445 . 00477 . 00505 .00542 . 00592 .00628 . 00689 .00776 .00914 .013 .017 .028 Inch. 0. . 0O053 . 00075 .000,7 . 00079 . 00085 . 00029 . 00021 . 00026 . 00U32 . 00028 . 00037 . 00050 . 00036 . 00001 .00087 .00138 . 00380 .004 .011 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. Generai sinnmari/. Tensile strengtli per aqn are inch of original section ponnds . - 170, 000 Elastic limit per square inch of original section do... 130,000 Elongation per inch after mpture inch.. .015 Elongation per inch nnder strain at elastic limit ; do... .00542 Reduction in area after rapture, per centum of original section 27. 3 Position of rupture 4". 25 outside the ganged section Chai-adter of broken surface finesUky 598 SQUAEE AND FLAT STEEL WIRE. 2 O o H O S P a » So a S £- □ o fl cd a o a> tl- •9 -9 S rt — Silky ....no ..-.do ...do ., Silky slightly granular Silky ....do ....do ....do WWWNCT-t-mr-lr ■cSOOOOOOOOOOOO .oooooooooeoo '§' l[ li Jl' [I li li li li li II II II ^ t> O O irt lO 00 CD l£3 (D o in o 5 t-QOOO w to es t^ t- t-SD O (D XXXXXXXXXXXX ; r-oo oot-to lO 5000 w o c-aooo-i*coeot-t-t-CMCNCO OOOi-if-trHOOOiHiHiH t>i-C)ONt-OJO)t- .wOOOOOOOOOOOO SOOtNC-iOCMOOeOO-^ifM (J^^t-t-t-C00000«)«D(Dt-C--*«DU5CC00eDCOOJOl« gc-ot-caootototooocooo j3oooooooooooo s o o oo cooo^ooo 5swe3cot-ceir3^i-Hi-iNi-(coj ^O OOOOOOOOOOO rf»OTio«ooeDcomco"T«"<*iM >i^i-(rHi-I^OOiH>~lr-iOOO rfSOMiJlmiOlfllOcQMMiON o^^WTHoocooorHi— i^-r-t-F- HiHt-IC4CqC4COCOCO>(DOTj(o fl ■^ ^ " '^ "^ 1 'I '^ 1 "1 '1 '1 'I ^."^."^ '^ "^.1 '^. 1 ": (D ^ ■s xxxxxxxxxxxxxxxxxxxx 03 i •^ '• '. \ l'^ * '. \ '.Id 'i ', i '.ni \ ', \ '. fe*:::fc':::f :;:t*'::: 1 §13 : : : g-tf : : : ot3 : : : o^ : : ; 1 t-oooo*-'2ooof-'2ooo*^2ooo |zip5 : : :tzip^ : : ;^m : : :;?;« ; ; ; ^^ •HiH.HrHiHNeHMCdNeocOMMm-*'^'**'^'** ^« d^ l-S o-ic3comcoeccoco?3ffQeocoffoecMcoMeQ«cis 600 SQUARE AND FLAT STEEL WJEE. SQUARE AND FLAT TINNED AND UNTINNED STEEL WIRE FROM E. H. WOLFF & CO., LIMITED. FIEST LOT. Coil No. 1. WeigJit, 58J pounds. ",10 Square Wire. No 3146. Sectional area, ".0994 x ".0994 = .0098 square inch. Gauged length, 10". Applied loads. EloDgatiou per inch. SucGessive elongation per incll. Permanent set. Successive permanent set. Ueinarks. Total. Per square inch. Pounds. 49i 196 392 ' 588 784 980 1,029 1,078 1, 127 1,176 1, 225 1,274 1,323 1,372 1,421 1,470 1,619 1,668 1,617 1,660 1, 715 1,761 1,813 1,862 1,911 1,960 2,009 2,058 2,107 2,148 Pounds. 5,000 20, 000 40, 000 60, 000 80, 000 100, 000 105, 000 110, 000 115, 000 120, 000 125, 000 130, 000 135, 000 140, 000 145, 000 150, 000 155,000 160, 000 165. 000 170, 000 175, 000 180, 000 185, 000 190, 000 195,000 200, 000 205, OOO 210, Olio 215, 000 219, 180 Inch. 0. . 00064 . 00144 . 00224 . 00304 . 00306 . 00427 .00150 . 00476 . 00503 . 00530 . 00559 . 00594 . 00024 . 00602 .00695 . 00739 . 00769 .00817 . 00869 .00914 .00968 .01032 ,01106 .013 .014 .015 .017 .019 Inch. 0^ . 00064 . 00080 . 00080 . 00080 . 00U92 .00031 . OU023 . 00026 . 00027 .00027 . 00020 . 00035 . 00030 . 00038 .00033 .00044 . 00030 . 00048 . 00052 . 00045 . 00054 .00064 . 00074 .00194 .001 .001 .002 .002 Inch. 0. Inch. 0. luitialload. Elastic limit. Tensile streugtli. . 00004 . 00004 . 00025 . 00021 General summary. Tensile strength, per square iDch of original section poniKls.. 219,180 Elastic limit per square inch of original section do . . . 160, COO Elimgation per inch after rupture incb.. .009 Elongation per inch under strain at elastic limit : * do... .00769 Reduction in area after rupture, per centum of original section ^ 34.7 Position of rupture 4". 5 outside the gauged section Character of broken surface fine silky SQUARE AND FLAT STEEL WIRE. Ko. 3147. Sectional area, ".0994x".0994=.0098 square inch. Gauged length, 10". 601 Applied loads. Elongation per inch. Sncceasive elongation per inch. Permaiient set. Successive permanent set. Eeninrks. • Total. Per square inch. Pounds. 49 196 392 688 784 980 1,029 1,078 1,127 1,176 1,226 1,274 1,323 1,372 1,421 1,470 1,519 1,568 1,617 1,666 1,715 1,764 1,813 1,802 1,911 1,960 2,009 2,058 2,107 2,156 2,176 Pounds. 5,000 20, 000 40, 000 60, 000 80,000 100, 000 105, OOO 110,000 115, 000 120, 000 125, 000 130, 000 135, 000 140, 000 145, 000 160, 000 156, 000 160, 000 165, 000 170,000 176, 000 180, 000 185,000 190, 000 195, 000 200, 000 205, 000 210,000 215,000 220, 000 222,040 Inch. 0. .00068 .00144 . 00220 . 00300 . 00389 . 00408 . 00433 .00469 .00485 . 00513 . 00539 . 00568 . 00599 .00029 . 00662 . 00699 . 00737 .00772 . 00814 .00859 . 00907 . 00958 .01020 . 01089 . 01170 .012 .014 .016 .021 .024 Inch. 0. . 00068 . 00076 . 00076 . 00080 . 00089 .00019 . 00025 . 00026 . 00026 . 00028 . 00026 .00029 . 00031 . 00030 . 00033 .00037 . 00038 .00035 . 00042 . 00045 .00048 . 00051 . 00062 .00069 . OOOil . 00130 .001 - .002 .005 .003 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile slrengtli. Genefdl suwrnary. Tensile strength, per square inch of original section poands.. 222,040 Elastic limit per square inch of original section do... 165,000 Elongation perinea after mpture inch.. .014 iBlongation per inch untfor strain at elastic limit do... .00772 Redaction in area after rupture, per ceuTum of original section 34. 7 Position of rupture near middle of gauged soctiozi Character of broken surface fine silky 602 SQUARE AND FLAT STEE.L WIRE. No. 3148. Sectional area, ".0994x".0994=.0098 square inch. Gauged leugth, 10". Applied loads. EIODgation per inch. Successive eloii^atiou per inch. Permanent set. Successive permanent set. Eemarks, Total. Per square inch. Pounda. 49 196 392 688 784 980 1, 029 1,078 1,127 1,176 1,225 1,274 1,323 1,372 1,421 1,470 1,619 1,568 1,617 1,666 1 715 1,764 1,813 1,862 1,011 1,960 2,009 2,058 2, 107 2,156 2,167 Pounda. 5,000 20, 000 40, 000 60, 000 80, 000 100, 000 105, 000 110, 000 115, 000 120, 000 125, 000 130, 000 135, 000 140, 000 145, 000 150, 000 155, 000 160, 000 165, 000 170, 000 175, 000 180, 000 185, 000 190, 000 195, 000 200, 000 206, 000 210, 000 216,000 220, 000 221, 120 Inch. 0. . 00063 .00148 , . 00223 .00312 ' . 00398 . 00418 . 00442 . 00467 . 00491 . 00617 . 00512 . 00572 . 00597 . 00622 . 00665 . 00683 .00717 . 00749 . 00784 . 00822 . 00866 . 00914 .00966 . 01038 .01127 .012 .014 .015 .020 .026 Inch. 0. , 00063 . 00086 .00075 . 00089 . 00080 . 00020 . 00024 .00025 . 00024 . 00026 , 00025 . 00030 . 00026 . 00025 . 00033 . 60028 . 00034 . 00032 . 00035 .0003L . 00044 . 00048 . 00052 . 00072 .00089 . 00073 .002 .001 .005 .006 Inch. 0. Inch. 0. Initial load. Elastic limit. Tens le strength. General summary. Tensile strength per square incTi of original section pounds.. 221,120 Elastic limit, per square inch of original section do... 175, 000 Elongation per inch afc«r rupture , ,..inch.. .008 Elongation per inch under strain at elastic limit do... .00822 Koduction in -area after rupture, per centum of original section 42.9 Position of rupture 1",85 outside the gauged section Character of broken surface fine, sillsy SQUARE AND FLAT STEEL WIEE. Coil JTo. 2. Weight 5i pounds. ".10 Square Wire. No. 3149.* Section area, ".0'&91 x".0991=.0098 square inch. Ganged length, 10". 603 Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. SaccessiTO punoanent set. Eemarks. Total. Per square inch. rounds, 49 196 302 588 784 080 1,029 1,078 1,127 1, 176 1,225 1,274 1,323 1,372 1,431 1,470 1,519 1,668 1,617 1, 666 1,715 1,764 l,fil3 1,862 1,911 1,960 2,009 2,058 2,ior 2,142 Pounds. 5,000 20, 000 40, 000 60, 000 80, 000 100,000 105, 000 110, 000 115,000 120, 000 125, 000 130, 000 135,000 140, 000 145, 000 150,000 155,000 160, 000 165, 000 170, 000 176, 000 180, 000 185, 000 190, 000 195, 000 200, 000 ~ 205, 000 210,000 215,000 218, 570 Inch. 0. .00068 .00143 .00222 . 00307 .00394 . 00415 .00437 . 00464 . 00489 . 00517 .00547 . 00574 . 00600 .00037 .00668 . 00708 .00743 . 00781 . 00822 . 00872 . 00922 .00978 .010.50 .01127 . 01227 .013 .015 .019 .025 Inch. 0. .00068 . 00075 . 00079 .00085 . 00087 .00021 .00022 . 00027 . OOOiS .00!128 , Ooo:jo . 00027 .00032 . 00031 .00031 .00040 . 00035 . 00038 .00041 . 00050 . 00050 . 00050 . 00072 . 00077 . 00100 .00073 .001 .004 .006 Inch. 0. Inch. 9. Initial load. Elastic limit. Tensile strength. General summary. Tensilo strenfftli per square inch of original sectiou ,,,.. -..ponnda.. 218,570 Elhstic Huiit per square inch of original section tto... 165, OUO Elon«:ation per inch after rupture infh . ,013 Elongation per inch under strain at elastic limit tlu. .. .00781 Kednctionin area after rupture, per centum of original seclion 29. G Position of rapture ".65 inside the gauged sectiou Character of broken surface fine silky r/'A SQUARE AND PLAT STEEL WIRE, ifo. 3ir)0. Sectional area, ".0988x".0988=".0{)97 square inch. (Jauged length, 10". Applied loads. Elongation per inch. Successive eloni II .15X.075 . 15 X . 075 .15X.076 . 1491 X. 0741 . 1488 X . 0730 . 1486 X . 0730 . H92 X . 0742 . 1486 X . 0732 . 1485 X . 0726 55 28 17 17 16 16 42 42 48 8 8 The surfaces of the wires were smooth, and corners rounded to about ".01 radius. In general, the tinning appears of uniform thickness. Each coil, however, showed places in which the coating was broken, exposing tlic steel in minute places. There was excess of tin in places on the edges of coil ISo. 1, the thickness being in these places ".002±. The wires coiled successfully over an arbor ".13 diameter. SQUARE AND FLAT STEEL WIRE. Coil No. 1, No. 3703. Sectional area, ".1490x".0742=.011 square inch. Gauged length, 10". 619 Appliecl loada. Elongation per Inch. Successive elongation per inch. ■ Permanent set. Successive permauoiit set. Eemarlcs. Total. Per square incli. Pounds. 55 220 440 600 880 1,100 1, 155 1,210 1,205 1,320 1,375 1,430 1,485 1,540 1,695 1,650 1,705 1,760 1,815 1,870 1,925 1,980 2,035 2,090 2,145 2,200 2,209 Pounds. 5, 000 20, 000 40, 000 60, 000 80, 000 100, 000 105, 000 110, 000 116,000 120, 000 125, 000 130, 000 135, 000 140, 000 145, 000 150, 000 155, 000 100, 000 165, 000 170, 000 175, 000 180, 000 185, 000 190, 000 195, 000 200, 000 200, 820 Inch. 0. . 00070 .00142 . 00220 . 00299 . 00377 . 00392 .00411 .00431 .00451 .00471 . 00491 .00516 .00538 . 00558 . 00581 .00002 .00630 . 00659 . 00694 . 00733 . 00782 . 00860 . 00988 .017 .027 .031 Inch. 0. .00070 . 00072 . 00078 .00079 .00078 .00015 .00019 , 00020 •. 00020 . OOOiO . 00030 .00035 . 00022 . 00030 . 00033 , .00021 . 00038 . C0OJ9 . ooo;i5 .000:19 . 00049 . 00078 .00128 .00712 Inch. 0. Inch. 0. Initial load. Elastic limit. .010 .004 Tensile strength. 1 G-eneral summary. Tenaile atretigtli per square incli of orit^inal section pounds. 200. 820 Elastic limit per square inch of original section : do .. 175, 0(JO Elongation per inch after rupture inch. .029 Elongation per inch under strain at elastic limit do... .0073a Kednction in area after rupture, per centnm of original section 32. 8 Position of rupture 1". 15 inside the gauged section Character of broken surface silky 620 SQUARE AND Yi.A.T STE]EL WIRE. No. 3764. Sectional area, ".1490x".0735=.011 square inch. Gauged length, 10". Applied loads. EloD^atiou per inch. Successive elongation per inch. Permanent sot. Successive permanent set. Kemarlss. Total.' Per square inch. Pounds. 55 220 440 660 880 1,100 1,165 1,210 1,265 1,320 1,375 1,430 1,485 1,540 1,595 1,650 1,705 1,760 1,816 1,870 1,925 1,980 2,035 2,090 2,145 2,200 Pounds. 5,000 20, 000 40, 000 60, 000 80, 000 100, 000 105, 000 110, 000 116, 000 120, 000 126, 000 130, 000 135, 000 140, 000 146, OOO 1.50, 000 155, 000 160, 000 165, 000 170,000 175, 000 180, 000 185, 000 190, OQO 196, 000 200, 000 Inch. 0. . 00075 . 00152 . 00231 .00307- . 00387 .00407 .00422 .00447 . 00466 . 00486 .00510 . 00531 . 00550 . 00579 .00698 .00622 .00650 . 00678 . 00717 . 00765 . 00806 .00878 . 01002 .016 Inch. 0. . 00075 .00077 . 00082 . 00073 . 00080 .00020 .00015 . 00025 .00019 . 00020 .00024 . 00021 . 00019 . 00029 .00019 . 00024 .00028 . 00028 . 00039 .00038 . . 00051 . 00072 . 00124 .00498 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. » General summary. Tejsile strengtli per square inch of original section pounds. . 200, 000 Elastic lirait per square inch of oiiginal section do... 175, OOD Elongation perinob after rupture inch,. .007 Elongation per inch under strain at elastic limit ^ do . . . . 00755 Keduction in area after rupture, per centum of original section 37. 3 Poaition of rupture 7".35 outside the ganged section Character of broken surface Hue silky SQUARE AND FLAT STEEL WIRE. No, 3765. 621 Sectional area, ".1490x".0740=.011 square inch. Gauged length, 10". Applied loads. Elongation per inch. Sacoessive elongation per inch. Permanent set. Successive permanent set. Remarks. Total. Per square inch. Pounds. 56 229 440 660 880 1,100 - 1,320 1,375 1,430 1,485 1,540 1,695 1,650 1,705 1,760 1,816 1,870 1,925 1,980 2,035 2,090 2,145 2,200 2,220 Pounds. 5,000 20,000 40,000 60, 000 80,.000 100, 000 120, 000 125, 000 130,000 135, 000 140, 000 146, 000 150, 000 155, 000 160, 000 185, 000 ■ 170, 000 175,000 180, 000 185,000 190, 000 195, 000 200, 000 201, 820 Inch.- 0. .00064 . 00137 .00212 . 00292 .00305 . 00428 .00460 . 00488 .00512 . 00531 .00553 . 00577 .00697 . 00623 . 00654 .00685 . 00726 .00774 . 00837 .00675 .016 .020 Inch. 0. . 00064 . 00073 .00075 . 00080 .00073 . 00063 .00022 . 00038 .00024 . 00019 .00022 . 00024 .00020 . 00020 .00031 . 00031 . 00041 .00048 . . 00063 . 00138 . 00625 .004 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General summary, ■ Tensile strength per Bqaare inch of original section ponnds-. 201,820 Elastic limit per square inch of original section do... 170.000 Elongation perinea after rupture : inch.. .008 Elon;;auon per inch under straiu at elastic limit do... .('0685 Hcduction in area after rupture, per centum of original section 37.3 Position of rupture 7".5 outside the gauged section Character of broken surface fine silky 622 SQUAEE AND FLAT STEEL WiEE, Coil No. 2. 2S"o. 3766. Sectional area, ".1490x".0730=,011 square inch. Gauged length, 10". Applied loads. Elongation per inch. Snccessive elongation per inch. Permanent set. Successive Eemarks. Total. Per sqnare inch. permanent set. Founds. 55 220 440 660 880 1,100 1,320 1,376 1,430 1,485 1,540 1,695 , 1,650 1,705 1,760 1.815 1,870 1,825 1,980 2, 035 2,090 2, 14.6 2,200 Pounds. 5,000 20, 000 40, 000 60, 000 80, 000 100, 000 120, 000 125, 000 130, 000 136, 000 140, 000 145, 000 150, 000 165, 000 160,000 ■ 165,000 170, 000 175, 000 180, 000 385, 000 190, 000 195, 000 200, 000 Inch. 0. . 00074 . 00149 . 00227 . 00307 . 00392 .00468 . 00484 . 00506 . 00630 . 00648 .00570 . 00595 . 00617 . 00612 . 00671 . 00708 . 00750 . 00800 . 00902 . 01080 .017 .025 Inch. 0. . 00074 . 00076 . 00078 . 00080 . 00083 . 00076 . 00016 . 00022 . 00024 . 00019 . 00021 . 00025 . 00o22 . O0025 . 00029 . 00037 . 00042 . 00050 . 00102 . 00178 . 00620 .008 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General suv^moru. Tensile strength per square inch of original section pounde.. 200,000 Elastic limit per aqaare inch of original section do... 170, 000 Elongation per inch after rnptnre. inch.. .011 Elongation per inch under strain at elastic limit ....do... . 00708 Reduction in area after rupture, per centum of original soction -..i. 37.3 Position of rupture 7".9 outside the gauged section Character of broken surface , fine silky SQUARE AND FLAT STEEL WIRE. No. 3767. Sectional area, ".1487x".0730=.011 square inch. U iiiiged length, 10". 623 Applied lo»ds. Elongation per inch. SuoceBBive elongation per meh. Permanent set. Successive permanent set. Eemarks. Total. Per sqaare inch. Founds. 220 440 660 »80 1,100 1, 320 1,375 1, 4:10 1,485 1, .540 1, 505 1,050 1,705 1,700 1,815 1,870 1, 925 1,980 2,035 2,090 2,145 2,200 Poundi). 5,000 20,000 40, 000 60, 000 80, 000 100, 000 120, 000 125, 000 130, 000 135, 000 140, 000 145,000 150, 000 155, 000 160, 000 165, 000 170, 000 175, 000 180, 000 185, 000 190, 000 195, 000 200, 000 Inch. 0. . 00076 .00163 . 0O23O . 00311 .00392 . 00472 . UU487 . 00507 . 00527 . 00554 . 00675 .00597 . 00624 . 00647 . 00673 .00707 .00744 . 00801 . 0O888 .01057 .017 Inch. 0. . 00076 . 00077 . 00077 .00081 . 00081 . 00080 .00015 .00020 .00020 . 00027 . 00021 . 00022 .00027 . 00023 .00026 . 00034 .00037 . 00057 .00087 . 00169 .00643 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. Gerjeral summary.. Tenflilo strength per square inch of oriffinal section pounds.. 200, 000 Elasticlimit per square inch of original seutiou do .. 175,000 !E;ioiigatioU'per iucli after rupture '. inch.. .009 Elfingation per inch under strain at elastic limit do .. .00741 Eefluctiou in area after rupture, per centum of original section 35.5 Position of rupture 9'' outside the gauged section Character of uroken surface .' hue silky 624 SQUARE AND PLAT STEEL WIEB. No. 3768. Sectional area, 'M487x".0730=.011 square inch. Gauged length, 10" Applied loads. Elongation per inch. SucceseiTe elongation per inch. Permanent set. Successive permuueut set. Kemarks. Total. Per square incb. JPounds. 55 220 440 660 880 1,100 1,320 1,375 1,430 1,485 1,540 1,595 1,650 1,705 1,760 1,815 1,870 1,925 1,980 2,035 2,000 2,145 2,200 2,212 Pounds. 6,000 20, 000 40, 000 60, 000 ■ 80, 000 100, 000 120, OOO 125, 000 130, 000 135, 000 140, 000 145, 000 160, 000 165, 000 160, 000 165, 000 170, 000 175, 000 180, 000 185, OOO 190, 000 195, 000 200, 000 201, 090 Inch. 0. . 00069 . 00148 . 00218 .00298 . 00377 . 00468 . 00478 . 00503 .00522 . 00545 .00567 . 00590 .00612 . 00638 . 00668 . 00704 . 00749 .00806 . 00906 . 01076 .015 .022 Inch. 0. . 00069 . 00076 . 00073 . 00080 . 00079 .00081 . 00020 . 00025 .000)9 . 00023 . 00023 . 00023 . 00022 . 00026 . 00030 . 00036 . 00045 . 00057 .00100 . 00170 Inch. 0. Inch. 0. Initial load, Blaa tic limit. Tensile strength. .00424 .007 General summary. Tensile strength per square inch of original section pounds. . 201,090 E astic limit per square inch of original section -. ..do... 170,000 Elongation per inch after rupture : inch.. .012 . Elongation per inch under strain at. elastic limit do... .00719 Hednctiofi in area after rapture, per centum of original section 39. 7 Position of rupture ...-..: 5".22 outside tlie ganged section. Character of broken surface '". , finesUky 632 SQUARE AND FLAT STEEL WIRE. SAMPLES FROM COIL NO. 2. No. asso. Sectional area, ".148x".148= Gauged length, 10". .0219 square inch. Applied loads. Elongation per mch. Successive elongation per inch. Permanent - sot. Saccessive permanent setf. Kemarks. Total. Per square inch. Founds. 109 438 876 1,314 1, 7.^2 2,190 2, 828 2,737 2,847 2,956 3,066 3,175 3,285 3,394 3,604 3,613 3,723 3,832 3,942 4,051 4,161 4,270 4,380 4,489 4,599 4,663 Founds. 5,000 20. 000 40, 000 60, 000 80, 000 100, 000 120, 000 125, 000 130, 000 135, 000 140, 000 145, 000 150,000 K5, 000 160, 000 105, 000 170, 000 175, 000 180, 000 185, 000 190, 000 195, 000 200, 000 205, 000 210, 000 212, 880 Inch. 0. . 00060 . 00128 . 00205 . 00277 . 00302 . 00445 .00464 . 00485 .00509 . 00530 .00554 . 00576 . 00600 . 00630 . 00660 . 0U695 . 00735 . 00779 .00844 . 00005 . 01005 .01105 .017 .023 Inch. 0. . 00060 .00068 . 00077 . 00072 . 00085 . 00083 .00019 . 00021 .00024 . 00021 .00024 . 00022 . 00024 . 00030 .00030 , .00035 . O0O4O . 00044 . 00065 . 00061 . 00100 .00160 . 00535 .006 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile streneth. * General summart/. Tensile strengtb, per sqnareincli of original section pounds.. 212,880 Elastic limit per square inch of original section ...do... 170,000 Elongation per incli after rupture , inch . . . 027 Elongation per inch UDder strain at elastic limit. -~. 1 do. .. .0060.5 Keduction in area after rupture, per centum of original section 39. 7 Position of rupture ".75 inside the gauged section Character of broken surface '. fine silky SQUARE AND FLAT STEEL WIRE, No, 3851. Sectional area, ".148x".l'i8=.0219 square inch. Gauged length, 10", 633 Applied loatla. Elongation per inch. Snccesaive elongation per inch. Permanent set. SucoessiTe permanent eet. Jleniarl^s. Total. Per square inch. Pounds. 109 438 876 1,314 1,752 -2,190 2,628 2,737 2,847 2,956 3, 06B 3,175 3,285 3,304 3,504 3,613 3,723 3,832 3, 942 4,051 4,161 4,270 ■ 4,380 4,489 ' 4,599 4,640 Pounds. 5,000 20, OOO 40.000 60, OOO 80, 000 , 100, 000 120, 000 125, 000 130,000 135, 000 140, 000 145, 000 150,000 155, OOO 160,000 166, 000 170, 000 175, 000 180, 000 185, 000 190, 000^ 195, OOO 200, 000 203, 000 210, 000 211, 870 Inch. 0. . 00058 .00128 . 00205 ..00282 . 00360 .00445 . 00463 .00486 .00310 . 00530 . 00555 . 0U578 . 00604 . 006,10 . 0066-1 .00700 . 00737 . 00786 . 00842 .00914 .01003 . 0U58 .015 .018 Inch. 0. . 00058 . 00070 . 00077 . 00077 .00078 . 00085 .00020 . 00021 . 00021 . 0OU2O . 00025 .000^3 . 00026 . 00020 . 00031 . 00036 . 00037 . 00049 . 00056 . 00072 . 00089' . 00155 . 00342 .003 Inch. 0. Inch. 0. Initial load. Elastic limit. Tenailo strength. ..,^. [ Genet'al swnxmary. Tensile strength per square inch of original section ponnds.. 211,870 Elastic limit pei square inch, of original section do. . . 175, 000 Elongation per inch after rupture - inch.. .012 Elongation per inch under strain at elastic limit do... .00737 Beductionin area after rupture, per centum of original section 34t 2 Position of rupture ". 1" outside the gauged section Charactert)f broken surface • ...fine silky 634 SQUARE AND FLAT STEEL WIRE. No. 3852. Sectional area, ".148x".14:8=.0219 square inch. Gauged length, 10". Applied loads. Elongation per inch. SucceBsiYO elongation per inch. Permanent set. Successive permanent sot, Kemarks. Total. Per aqaare inch. PoumdB. 109 438 876 1,314 1,752 2,190 2,628 2,737 2,847 2,956 3,066 3,175 3,285 3,394 3,504 3,613 3,723 3,832 3,942 4,051 4,161 4,270 4,380 4,489 4,599 4,640 Pounds. 5,000 20, 000 40, 000 60, 000 80, 000 100, 000 120, 000 135, 000 130, 000 136, 000 140, 000 145, 000 150, 000 156, 000 160, 000 16.5, 000 170, 000 175, 000 , 180, 000 185, 000 190,000 195, 000 200, 000 205, 000 210, 000 211, 870 Inch. 0. . 00059 .00138 ■ . 00212 .00295 . 00374 . 00458 . 00479 . 005C0 . 00521 . 00544 . 00.j(i4 . OOjOO .00617 .00012 . 00672 .00707 . 06718 . 00800 . 00838 . 00912 . 00997 .01137 .016 .019 Inch. 0. .00069 . 00079 .00074' .00083 . 00079 .00084 . 00021 . 00021 . 00021 . 00023 . 00020 . 00026 .00027 . 00025 . 00030 . 000,15 .00041 . 00052 . 00038 . 00074 . 00085 I .00110 .00463 .003 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General summary. Teneile strength per square inch, of original section poandB.. 211,870 Elastic limit per square inch of original sectiou -do... 170, 000 Elongation per inch after rapture inch.. '.'O'iO Elongation per inch under strain at elastic limit „... do... .00707 Reduction in area after rupture, per centum of original section 37. 4 Position of rupture 1".70 inside the gauged section Character of broken sorfaoe fine silky SQUARE AND FLAT STEEL WIRE. 635 09 1 •Not tinned. ■— 1 . 1" ti : I : : : : ; : : I : 3 gjOpooooooooo Con- traction of area. .CQrt-,*MN(NMCOWS4WeQ ' i- .080X.0B0— 0064- .080X.080=.0064 .075X. 075=. 0056 .083X. 083=. 0069 .083X. 083=. 0069 .OSfrX. 085=. 0072 .130X. 060=. 0078 .133X. 056=. 0074 il33X. 060=. 0080 .130X. 060=. 0078 .130X. 062=. 0081 .130X. 055=, 0072 g H Eh .3 gs. II Is rfSoSo.-l.-lHrHOr-.000 1 i 1 a B CO ,J? CO ^* e-i I— CO « S o o i^ i^ o 3 o Pounds. 2,148 2,170 2,167 2,142 2, 112 2,128 2,512 2, 53u 2,508 2,445 2,412 2,420 1 1 :< o m m u3 inio m lo ko o o o g(O(Ot-ffl(OtO000O00aCC-L- (Pr-lrH,HrHrHr4iHr-lr-tfHrHrH t giO{OC-0COOO ■a 1^ 00 00 00 00 h- h- ,sgggggg3SS3d=! ''OOOOOOOO 300 ^ : 1 is IggggggSSSSSS 1 Inch. .0984 .0994 .0994 .0991 .0988 .09B9 .1490 .1400 .1400 .1483 .1483 .1483 ■lli rHrHrt(SM(NmCO«-*-*100MOMO T-(csa»ooo oo •n^-^oDoo oo fHi-iHOOO OO O OOO n-HMmoin ciffKMceioce iH iH^rH OOO XXX* XXX MiHca O^IA C4C4 Cq^ffOCO ff4QDOO in t ^' d ^ rH PO OT THrHrHOO O H f-f rH CM )fQ e s o o o o 6 ^ 2 "C "w "CO "O "iS "^ S;n { i ,i I I 1 < COl34 ,• oocia wt;t>t-^if5oscdodrH CQ CO CO CO CO C4 CO ^ CO •^oaoa^OCDt>L— «t-r~ 00<=>^)0<=I000 ooooooooo llli.ljll lilililiji t> Its ui ifs-io do CO 00 CO 4n U3 lA lo in m knr m ira ooooooooo x'x'xxxxxxx oinmioomomoD- cocMcadeoeoeocoN ot-ooi-iojffatocoo ea O O rH OrH N rH W ooooooooo oioc'ioooaoiHCO oooooooof.-'*g» o"o rJo o'^odc^'ef . oooooowoo (NC^CMMCODHrHCied ' aoooocMODco^ O Xi(MOO.~lft50C04 ff4C Tinned coil. 1 O i "00000 g'O'O'O'O'ti s i ; 1 i ; f -on- traction of area. .NCI t-t-(M-* . ■ eo CO CO m m CO £ 1 1 ■s ■5 ^0 00000 ■^ li ii If li li li 00 10 mot- X X X X X X a 11 II §S m .NMWt-MO « M IN rt ci r-i c4 ^^^^,^^^ A 1 •1 oigooooo 1 O S -<}« 00 So 00 jVM§NM«(N 1 I""'""'' 1 1 S Q^OOOOOO ■«§§§§§§ (D <0 C- t- l^ t- 1' o H mconnmco ■3 P CD .oooiosmej # i i s ^ 00 CO 00 00 CC CO 1 1^1 f-t»Hi-ICl(MM ^1 tj-00 030T-HM SQUABE AND FLAT STEEL WIBB. 637 H O W H - > •r-( ai u a « o 02 IS O a«H or. « a^ es O) ft ^3 « "ooofaddooodooo "RpfifioaoflQOfiPfl -'COOjeOQOffqcOMr-lt-rHirioOO ^~l— ..—(•-I'-'r-l'-Hr^-Hi— l^^1^C4 'goooooooooo^ooo •g II II li If II II If II If If If If- If If ^iraooojnift-^coi-ii-iin ^ j^ _• J i—r-.rH.-lr-'i--^i-HHrHt-'^_j_i_i ^OOOOOOOCOOOOOO, 'S co"m"m"co"co'cq com" co'ec ■*■*'■ -isT-idr pSfCOOQOOaaoOOnOOiCQCvllMOOO gtHrHr-fr-ltHi-«THi-(f-ri— MWMCM H ■: :!25 *3 4* +i +3 « -*J 43 +11 +3 +3 I I bC bC bC bo bO bO bio oc be bO • ■ f^hhit-iHht-it-it^t~iOi ■ (OcoosisosmoocDosas^ | ....... .'^"::Soi O000000000*='0il f2il«i!2i|2i^fel2i|Zi|Zi!2ij| ; HMMTfW(ffll>0OOJ 638 SQUARE AND FLAT STEEL WIRE. ELECTHICALLY WELDED STEEL WIRE. SAMPLES TAKBN FKOM COILS OF FIRST LOT. No. of test. Coil num- ber. Welding burr. Size at weld. Dimensions of wire. Sectional Tensile streugtli. ■Width. Thioli- ness. aretC of wire. Total. Per squnre ijicb. 3180 3181 3182 3183 3184 8185 3186 8187 3188 3189 3190" 319J J 1 1 ?' 2 2 3 3 3 4 4 4 Incih. Inch. .0994 .0994 .0994 .0991 .0991 .0991 .1490 .1490 .1490 .1483 .1483 .1483 Inch. . 0994 .0994 .0994 .0991 .0991 .0991 .0744 .0774 .0744 .0740 .0740 .074J Sq. inch. .0098 .0098 .0098 .0098 .0098 .0098 .0110 .0110 .0110 .Clio .0110 .0110 Founds. 1,368 953 1,496 1,482 1.151 1,648 983 1,512 1.448 1,294 1,108 1,766 Pounds. 139, 590 97, 240 152, 650 151, 220 117,450 168, 160 89, 3U0 137, 4.'i0 131, 040 117, 640 100, 730 160, 550 ....do Not removed.. Removed do .170 X.17« . 1002 X. 0994 .) 021 X. 1003 . 1700 X. 1750 .075 X.149 . .074 X.151 .130 X.205 .074 X.148 .074 X.148 .150 X.220 Not removed.. Removed do Not removed.. Removed .j-.do Not removed.. Specimens fractured at the welds, excepting Ifos. 3185 and 3191, wiiich fractured ".10 from the joints, and exhibited silky fractures. Those which fractured at the welds exhibited surfaces generally smooth, with indistinct granular appearance, the granulation being more i)ronounced in the stronger welds. No. 3187 was in part silky. SQUARE AND PLAT STEE.L WIEE. 639 , H >4 O ^ 1-1 ^ g ^ o (1 E^ w N K ^ to o P 'CO ><) -M (5 y Ei) 1^ fe o N la M 'A M W T) M CI <) K H i? h 1^ (J ^ ^ A4 ►3 ^ bq •^ 1 -m o rfit-i-t-t'C-ioiomio-v *J-*'*?*'iJi"*t-i.-t-t-l:- •S 5 SSrHrH.-lTHrtOOOOO H -fl .lO'*t-00«J-*tracD^M rf;i>i>t*(r-ixnoiooo» a 'O «OJ^Tf'*rC'rT)'-^TtlT*< S g >-H -^comco Koee—iea ooooscoi-^O'.cinioio lOTTTH'ijirHiini-'t-t-t- > ^(N,Hi-(rHrtr-IOOOC> •g X X X X X X X X X X ts kuOr-QOooi>oA030o N ff4rHi-HrHrHC^iHi-lt-liH s jj XJ : J I ^rd • ' • ' £ I I r ; £ . : I : .a 1 g t, . . . g p, . . , ^ 2 o_p O F^ S o o o i? c fl) ■ • ■ o 3 • ■ • ^ {2iM-: : ;^M : : . iHHiHiHHNNMirqM d'S |zi° Ck. sggsfigsesp 04i -• M inioifiiousuiiraioiom o « eQCQCOeCMCOMCOCOCO ^ " 1 640 SQUARE AND FLAT STEEL WIKE. SaUARE AND FLAT TINNED STEEL WIRE FROM TRENTON IROK COMPANY. Coil A. Weight, 24J pounds. Flat Wire. No. 3292. ITrom outside end of coil. Sectional area, ".1523 x ".074:2=.011 square inch. Gauged length, 10". Applied loads. Elongation per moh. SucoesaiTe elongation per inch. Permanent set. Successive permanent set. Keniarls.. Total. Per square inch. Pounds. 56 220 440 660 880 1,100 1,155 1,210 1,265 1,320 1,375 1,430 1,485; 1,540 1,595 1,650 1,608 Pounds. 5,000 20, 000 40, 000 60, 000 80, 000 100, 000 105, 000 110, 000 115,000 120, 000 125, 000 130, 000 135,000 140, 000 145, 000 150, UOO 154,360 , Inch. 0. .00059 . 00135 .00214 . 00301 . 00407 . 00437 -. 00473 . 00509 . 00551 . 00598 - . 00652 .00716 . 00795 . 00909 .01166 .021 Inch. 0. . 00057 . 00078 . 00076 . 00090 .00103 . 00030 . 00036 00036 . 00042 . 00047 . 00054 .00064 . 00079 .00114 .00257 . 00934 Inch. 0. Inch. - 0. Initial load. Tensile strength. Ge7ieral summary. TensUft strength per square inch of original section pounds. 154,360 Elongation per inch after rupture ;, inch.. . 016 .B^duction in area after ruptui'e, per centum of original section 26.4 Poiaition of rupture ".83 inside the panged section Character 01 broken surface fine silky, lamellar SQUARE AND FLAT STEEL WIEE. GU No. 3293. Prom outside end of coil. Sectional area ".1523x ".0742=.011 square inch. Gauged length 10". Applied loads. Elongation per inch. Suobeasive eIoii;;ation per incU. "Permanent , set. Snccessive permanent set. Eemarlss. Total Per square inch. PoUndt. 55 220 440 650 605 660 715 770 825 880 , 035 990 1,045 1,100 1,155 1,210 1,265 3,320 1,375 1,130 1,485 . 1,540 1,695 ■ 1.650 1,705 1, 712 Pounds. 5,000 20,000 40, 000 50, 000 65, 000 60, 000 65,000' 70, 000 76, 000 80, 000 . 85,000 90, 000 95, OOO 100, 000 105, 000 110, OCO 115, 000 120, 000 125,000 130, 000 135, 000 140, 000 145, 000 160, 000 156, 000 1,55, 640 Inch. 0. .00056 . 00132 .00167 . 00187 .00203 .00227 .00217 . 00273 . 00293 . 00318 . 00341 . 00361 . 00392 .00416 . 00149 .00185 . 00522 . 00662 .00612 .00672 . 00739 . 00843 .01000 .020 .022 Inch. 0. . 00056 .00076 . 00035 . 00020 .00016 . 00024 .00020 . 00026 .00020 .00025 . 00023 . 00023 . 00028 . 00024 . 00033 . 00036 . 00037 . 00040 .00050 . 00060 . 00067 . 00104 . .00157 .010 .002-, . Inch. 0. ■ Inch. 0. Initial load. Elastic limit. Tensile strength. ,., ' General summary. Tensile strengtliper square inch of original section pounds.. 165,640 Elastic limit per square inch of original section j .do... 126,000 Elongation per inch after rupture inch.. .017 ElouKation per inch under strain at elastic limit do... .00502 Keduction in area after rupture per centum of original section i 23. 6 Position of rupture ".2 inside the gauged section Character of broken surface silky; serrated H. Ex. 165 41 642- SQUARE AND FLAT STEEL WIEE. No. 3294. From outside end of coil. Sectional area, ",1523 x ".0742 =.011 square inch. Gauged length 10". Applied loads. EIoD Ration per incll. Sueceeaive elongation per inch. Permanent ^et. Successive permanent set. Semarks. Total. Per Square inch. Foundg. 55 220 440 665 605 660 715 770 825 880 935 990 1,045 1,100 1,155 1,210 1,265 1,320 1,375 1,430 1,485 1,540 1,695 1,650 1,705 1,714 Pounds. 5,000 20, 000 40, 000 60, 000 65, 000 60, 000 65, 000 70, 000 75, 000 80, 000 85, 000 90, 000 96, 000 100, 000 105, 000 110,000 115, 000 120, 000 125, 000 130, 000 135, 000 140, 000 145, 000 150, 000 155, 000 155, 820 Inch. 0. . 00063 .00138 .00176 .00194 . 00215 . 00230 . 00255 . 00278 .00300 .00322 . 00345 .00370 . 00395 . 00425 . 00468 . 00192 . 00530 . 00678 . 00622 . 00080 .00752 . 00858 .i)1072 .014 .017 . Inch. 0. .00063 . 00075 . 00038 . 00018 . 00021 . 00021 .00019 . 00023 . 00022 . 00022 . 00023 . 00025 . 00025 . 00030 .00033 . 00034 . 00038 . 00048 . 00044 .00058 . 00072 .00106 . 00214 . 00228 .003 Inch, Inch. Initial load. Elastic limit. Tensile strength. Tensile strength per square inch of original section pounds . . 155, 820 Elastic limit per square inch of original section do... 120, 000 Elongation per incn after rapture inch.. .006. Elongation per inch tinder strain at elastic limit do... . 00530 Keduction in area after rupture, per centum of original section 26. 4 Position of rupture 7".8 outside the gauged section Character of broken surface silky, lamellar SQUARE AND FLAT STEEL WIRE. 643 No. 3295. From inside end of coil. Sectional area, ".1510x".0738=.0n square inch. Gauged length, 10". Applied loafls. Elongation per incli. Successive elongation, per inch. Permanent set. Successive permanent set. Bemarks. Total. Per square iuoli. Pmmdt. 65 220 440 660 6Q5 660 715 770 825 880 935 990 1,045 1,100 1,155 1,210 1,265 1, 320 1,375 1, 430 1, 485 1,540 1,584 Pounds. 5, OCO 2o, 000 40, 000 60,000 55, 000 60, 000 65, 000 70, 000 75, 000 80, OOO - 85, 000 90, 000 95, 000 lOO, 000 105, 000 110, 000 115, 000 120, 000 125,000 130, 000 135,000 140, 000 144, 000 - Inch. 0. . 00063 , . 00135 . 00173 .00193 .00214 . 00334 . 00256 . 00283 . O03O8 .00337 . 00364 .00394 . 00428 . 00468 . 00513 . 00562 .00617 . 00687 . 00780 . 00925 .01150 .021 Inch. 0. . 00063 . 00072 . 00038 .00020 . 00021 .C0020 . 00022 .t'0027 . 00025 . 00029 . 00027 . OOObO . 00034 . 00040 . 00045 . 00049 . 00035 . 00070 . 00093 .00145 .00225 .00950 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. I General summary. , Tensile strength per square inch of original section '. pounds.. 144,000 Elastic limit per square inch of original section do... 105,000 Elongation per inch after rupture ,. inch.. .014' Elongation per Inch under strain at elastic limit do... .00468 Bednotion in area after rupture, per centum of original section 34. 6 Position of rupture 2''. 9 outside the gauged section Character of broken surface ...fine silky 644 SQUARE AND FLAT STEEL WIRE. Coil AA Weight 27f pounds. ".15 Square Wire. lsro.3296. From outside end of coil. Sectional area ".1510x".1500=.0226 square inch. Gauged length 10". Applied loada. Elongation per inch. Saocesaive elongation per inch. Permanent set. Snocesaive permanent set. ^Remarks. Total. Per Boaare iDch. Founds. 113 452 904 1,130 1,243 1,358 1,469 1,582 1,695 1,808 1,921 2,034 2,147 2,260 2,373 2,486 2,599 2,712 2,825 2,910 Fownds. 6,000 20, 000 40, 000 50, 000 65, 000 60, 000 65, 000 70, 000 75, 000 80, 000 86, 000 90, 000 96, 000 100, 000 105, 000 110, 000 115, 000 120, 000 125, 000 128, 760 Inch. '. 00057 .00135 . 00178 . 0O2O1 . 00233 .00246 . O027O . 00296 . 00328 .00354 . 00387 . 00422 .00464 . 00509 . 00568 . 00633 . 00725 . 00891 Inch, 0,- . 00057 . 00078 . 00043 .00023 . 00022 .00023 . P00?4 . 00026 .00032 .00026 . 00033 .00035 . 00042 . 00045 . 00059 . 00065 . 00092 . 00166 Inch. 0. Inch. 0. Initial load. Elastio limit. Tensile strength. G-eneral summary. Tensile strength per square inch of original section - ponnds.. 128,760 Elastic limit per square inch of original section do... 95, 000 Elongation per inch after rapture inch.. . 006 Elongation per inch under strain at elastic limit do... .00422 Keduction in area after rupture, per centum of original section 41. 6 Position of rupture 7". 3 outside the gauged section Character of DrokensnrfAce...,, ., , fine silky SQUARE AND FLAT STEEL WIEE. No. 3297. From outside end of coil. Sectional area, ".1510x".1500=.0226 square inch. Gauged length, 10". G45 Applied loads. Elongation per inch. SuocessiTe elongation per inch. Permanent set. Successive permanent set. Eemarka. Total. Per square inch. Pounds. 113 452 904 1,130 1.243 1, .356 1,460 1,682 1, 695 1,808 1,921 2,034 2,147 2,2'JO 2,373 2,486 2,59? 2,712 2,825 2,938 3,026 Pounds. 5,000 20, 000 40, 000 50, 000 55, 000 60, 000 6B, 000 TO, 000 75, 000 80, 000 85,000 90, 000 95, 000 100, 000 lOit 000 110,000 115, 000 120, OOO 126, 000 130,000 133,890 Inch. 0. . 00059 .00137 . 00177 . 00200 . 00223 .00246 . 00270 . 00295 . 00322 . 00352 . 00380 . 00418 . 00455 . 00604 .00558 . 00620 .00711 . 00837 .010 .014 Ineh. . 0. .00059 .0B078 . 00040 . 00023 . 00023 .00023 .00024 . 00025 . 000i}7 . 00030 . 00028 . O0O38 . 00037 . 00049 .00054 . 00062 . 00091 .00126 .00163 .004 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. ' General summary. .Tensile strength per square iDct of original section potmds.. 133,890 Elastic limit per square inch of original section ,.do... 05,000 Elongation periucli after ruptare - , ..inch.. .009 Elongation per inch under strain at elastic limit - do... .00455 Kednction in area after rupture, per centum of original section 41.6 Position of rupture ::; 4", 6 outside the gauged secttou Character of broken surface fine silky 646 SQOAEE AND FLAT STEEL WIEE. Fo. 3298, From outside end of coil. Sectional area, ".1510x".1500=.0226 square inch. Gauged length, 10". Applied loads. Elongation per mcli. Saccessive elongation per inch. Permanent set. Snccessive permanent set. Remarks. Total. Per square inch. Fowndi. 113 452 904 1,130 1,243 1,356 1, 4'69 1,582 1,695 1, 808 1,921 2,034 2,147 2,260 2,373 2,486 2,509 2,712 2,825 2,904 Founds. 5,000 20, 000 40, 000 50, 000 65, 000 60,000 65, 000 70, 000 75, 000 80, 000 85, 000 90, 000 95, 000 100, 000 105, 000 110, 000 115, 000 120, 000 125, 000 128, 600 Inch. 0. . 00063 ■ . 00142 .00187 . 0Q2O6 . 00229 - . 00251 . 00275 .00301 . 00327 . 00358 . 00387 . 00422 . 00464 .00511 .00668 . 00065 . 00785 . 01060 .017 inch. 0. .00063 .00079 . 00045 .00019 . 00023 . 00022 , 00024 . 00026 .00026 .00031 .00029 . 00035 . 0C042 . 00047 . 00067 . 00087 . 00130 .00275 .0064 Inch. 0. Inch. 0. Initial load. Elastic limit. • Tensile strength. . .. . General summary. Tensile strongdliper square inch of original section pounds.. 128,500 Elastic limit per square inch of original .section do.,. 95, 000 Elongation per inch after rapture ,inch.. .010 Elongation per inch under strain at elastic limit ...> do... .00422 Keduction in area after rupture, per centum of original section 44. 7 Position of rupture 8".75 outside the ganged section Character of broken surface .. 5- 1^ a ^ II II II II II 11 if \\ II ir OOOOl-(l-liHOOO n XXXXXXXXXX •5 s tr-WTt-«soiO«irtio , rHOi-KOOtHi-, B i ! » s .a g St S i i i <0 _g ^= # 1 1 ..^r . ^ 5*n3 §-05* i'd'd-i ■ gl*lgS^?S B s ■v^oiTioS't^ia 9^09 1-1 -1 CO to-^NrHCOlOCaOSflTilr- ■^ 09 s s 1 ^-rtrt-N « Cf rH rt-^^ B H « . . ,<;OOOtO«ieOc^,-tTH %S ^ o gs 4 • • •- § ,d TS I---.-.-. a 3 ^ 'd 03 ^ xxxxxxxxx (0 CO EJ I'd "tf "d .2 ^ :|^ il-^ :S > :i" :i> :§ gof-tOo£ocg ^ fc; :tzip^ :jziM \P^ a ^^^«^' «^'j'^^^<^ '<'^<^^^ ■s^ in kO U3 LO CO CO CD (0~(0 =*s »■* SQUARE AND FLAT STEEL WIRE. 651 FLAT AND SttUARE TINNED AND UNTINNED STEEL WIRE FROM THE WASHBURN & MOEN MANUFACTURING COMPANY. Marks. Surface of wire. Nominal dimensions. Actual dimensions. Diameter of curve Qf wire. One end. Other end. In coil. When released.' Sample 1. Sample 2. Sample 3. Sample 4. Black..; Tinned . Black... Tinned . » . „ .lox.io .lOX.lO .16X.075 .15X.075 // // . 0995 X. 0906 .0993X.1002 .1500X.0710 .1480 a. 0743 // // .1001X.1003 . 0992 X. 0996 .15KX.0755 .1500X.0745 'Pownds. 32 , 33 66 30 , Ounces. - 12 8 IncU&s. 31 18/ 21 17i Inches. ■ t :• <%6 ■ 54 • 42 ' *, Nearly straight. The surfaces of sample No. 1 were smooth, curvature of corners "'.Ol, to ".02 radius ; the larger radius being found at the end of the coil having the largest cross-section dimensions. Sample 2. — Surfaces smooth ; tinning generally smooth and appar- ently of uniform thickness, although in localities the tinning was thickened, reaching ".0003±. Sample 3. — Surfaces smooth and corners well rounded to about ".01 radius. Sample 4. — Surfaces smooth and corners well rounded to about ".01 radius. The tinning apparently well distributed over three surfaces. Along one surface on edge the tinning was thick in places, ".0003 ± , and in places the wire was naked. The tinning along the edges was thus defective for a considerable part of its length. 652 SQUAEE AND PLAT STEEL WIEE. Sample 1. No. 3772. Sectional area, ".0995 x ".0996 =.0099 square inch. Gauged length, 10". Applied loads. Elongation per inch. Sacceaeive elongation per inch. Permanent set. Successive permanent set. Keraai'ks. Total. Per square iDCll. Poundi. 49 198 396 594 792 990 1,188 1,237 1,287 1,336 1,386 1,436 ., 1,485 1,535 1,584 1,634 1,683 1,733 1,745 Pounds. 5,000 20, 000 40, 000 60, 000 80, 000 100, 000 120, 000 125, 000 130, 000 135, 000 140, 000 145, OOO 150, 000 155, 000 160, 000 , 165,000 170, 000 175, 000 176,260 Inch. 0. . 00072 . 00147 .00215 .00287 .00361 . 00437 . 00451 . 00468 .00487 . OOSOG .00526 . 00542 . 00568 . 00588 . 00613 .020 .0^3 Inch. 0. .00072 . 00075 . 00Q68 . 00072 . 00074 . 00076 .00014 .00017 .00019 . 00019 . 00020 .00016 . 00026 . O0C2O .00025 .01387 .013 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. 1 General summary. Tensile strenfi^th per square inch of original section pounds . . 176, 260 Blastic limit per square inch of original section ..do... 165,000 Elongation per inch after rnpture inch... .026 Elongation per inch under strain at elastic limit do... .00613 Bednction in area after rupture, per centum of original section 50. 5 Position of rupture ".95 outside the gauged section Characcer of broken surface fine ailky SQUARE AND FLAT STEEL WIRE. No. 3773. Sectional area, ".0995 x ".0996 = .0099 square inch. Gauged length, 10". 653 Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. Successive permanent set. Bemarks. Total. Per square Inch. Pownd». 49 198 396 591 793 990 1,188 1,237 1,287 1,336 1,386 1,438 1,485 1,535 1,584 1,634 1,683 1,733 Pound). 6,000 20, 000 40, 000 60,000 80, 000 100, 000 120, 000 125,000 130, 000 135, 000 140, 000 146, 000 150, 000 165, 000 160, 000 166, 000 170, 000 175, 000 Inch. 0.. ' . 08078 .00152 . 00222 . 00294 .00360 .00441 . 00459 .00478 . 00498 ( . 00518 . O054O . 00658 . 00578 . 00601 . 00662 .022 .034 Inch. 0. . 00078 . 00074 . 00070 . 00072 .00066 . 00081 . 00018 .00019 . 00020 .00020 .00022 .00018 . 00020 . 00023 . 00061 . 01538 .012 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General summary. Tensile strength per square incli of original section , ponnds.. 175,000 'Elastic limit per square Inch of orignal section 4 ..do.-.. 160,000 Elongation per inch after ruptiire , .1 inch. . . 023 Reduction in af-ea after rapture, per centum of original section 50i 5 Fositioxi ofirupture V T'.SO outside the ganged aeotidu Character of broken surface fine silky 654 SQUARE AINU FLAT STEEL VVIKE. No. 3774. Sectional area, ".1000 x ".1000 = .010 square inch. Gauged length, 10". Applied loads. Elongation per inch. S access ivo elongation per inch. Permanent set. Successive permanent set. Eemarks. Total. Per square inch. Potindg. 50 200 400 OOO 800 1,000 1,200 1,250 1,300 1,360 1,400 1,450 1, 500 1,550 1,600 1,650 1,700 .1, 735 Pounds. 5,000 20, 000 40, 000 60, 000 80, 000 100, 000 120, 000 126,;000 130, 000 136, 000 140, 000 145, 001 160, 000 155, 000 160, 000 165, 000 170, 000 173,680 , Inch. 0. . 00070 . 00146 . 00220 . 0O292 . 00361 . 00436 . 00457 .00171 . 00492 , 00508 .00531 . 00564 . 00574 . 00600 . 01280 .027 Inch. 0. .00070 ' . 00076 . 00074 . 00072 . 00069 .00075 .00021 .OOOU . 00021 . 00016 . 000 ?3 . 00023 . 00020 . 00026 . 00680 . 01420 Inch. 0. Inch. 0. Initial load. V Elastic limit. Tensile strength. General summary. Tensile strength, pei square iDch of original section pounds.. 173,500 'Elaatic'limit per square inch of original section do... 160,000 Elongation per inch after rupture inch... .030 Elongation per inch, under strain at elastic limit do... .00600 Rodnotion jn area after rupture, per centum of original section 48.0 Position of rapture ",10 outside tlie gauged section < Character of broken surface a... I , ...^.....fine eilky SQUARE AND, FLAX'' STEEL WIRE. Sample 2. No. 3775. Sectional area, ".1000 x ".0994 = .0099 square inch. Gauged length, 10". 655 Appliod loads. Elongation per inch. Snocessiye elongation per inch. Permanent set. Successive perm.^n6nt set. Remarks. Total. Per smiare inah. ' Pounds. 49 198 390 694 792 990 1,188 1,237 1,287 1, 336 1,386 1,436 1,485 1,535 1,584 1,634 , 1, 683 1,733 1,782 1,830 Pounds. 5,000 20, 000 40, 000 60, 000 80, 000 100, 000 120, 000 125, 000 130, 000 135. 000 140; 000 145, 000 150, 000 155,000 160, 000 166, 000 170, OOO 175, 000 180, 000 184, 840 Inch. 0. . 00066 .00142 . 00213 .00284 . 00364 . 00444 . 00458 .00483 . 00503 .00524 .00545 . 00568 . 00592 . 00618 . 00658 . 00793 . 01200 .024 Inch. 0. .00066 . 00070 .00071 .00071 .00080 . 00080 .00014 . 00025 . 00020 . 00021 . 00021 .00023 . 00024 .D0026 .00040 . 00135 .00407 .012 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. , General summary. Tensile strength per square inch of original section „ pounds.. 184,840 Elasticlimit per square inch of original section do... 165,000 Elongation per inch after rupture inch. . . 025 Elongation per inch under sirain at elastic limit ,. do... .00658 Hecluction in area after rupture, per centum, of orlgijial section 50. 5 Position of rupture 3".5 outside the gauged section Character of broken surface * fineslU^y 656 SQUARE AND FLAT STEEL WIKE. No, 3776. Sectional area, ".1000 x ".0994 = .0099 square inch. Gauged length, 10". Applied loads. Blongation per inch. Successive elongation per inch. Permanent set. SuccesslTe permanent set. Remarks. Total. Per square Inoii. Pownda. 49 198 396 594 792 990 1,188 1,237 1,287 1,336 1,386 1,436 1,485 1,535 1,584 1,6§4 1,683 1,733 1,782 1,831 Poimde. 5,000 20, 000 40, 000 60,000 80, 000 100, 000 120, 000 125, 000 130, 000 135, 000 140, 000 145, 000 150,000 155, 000 160, 000 165, 000 170, 000 175, 000 180, 000 185,000 Inch. 0. .00070 . 00144 .00220 . 00290 .00371 . 00445 . 00463 .00485 . 00503 .C0531 . 00551 . 00579 . 00599 . 00624 . 00663 .,00805 .01255 .027 Inch. 0. . 00070 . 00074 .00076 . 00070 .00081 . O0074 .00018 .00022 .00018 . 00028 . 00020 . 00018 . 00020 .00025 . 00039 . 00142 .00450 ,01445 Inch. 0. Inch. 0. Inltialload. Elastic limit. Tensile strength. X General summary. Tensile strength per square inch of original section pounds.. 185,000 Elasticlimit per square inch of original section... do... 165,000 Eloiigation perinea after rupture inch.. . 041 Elongation per inch under strain at elasticlimit do... .00663 . Redaction in area after rupture, per centum of original section 50. 5 Position of rupture 1".05 inside the gauged section Character of broken surface fine erllky SQUARE AND FLAT STEEL WIRE. No. 3777. Sectional area, ".1003x".0995=i.010 square inch. Gauged length, 10". 657 Applied loads. Elongation per inch. Successive elongation pel' inch. Permanent set. Snccessive permanent set. Kemarks. Total. Per square incu. Founds. 50 200 400 600 800 1,000 1,200 1,2.50 1,300 1,350 1,400 1,450 1,500 1,5.50 1,600 1,650 1,700 1,750 1,800 1.834 Pounds. 5,000 20, 000 40, 000 60, 000 80,000 100, 000 120, 000 125, 000 130,000 135, 000 140, 000 145, 000 150, 000 155, 000 160, 000 165, 000 170, 000 175, 000 180, 000 183,400 Inch. 0. .00074 .00143 .00216 .00291 . 00366 . 00449 .00466 . 00484 . 00508 . 00526 .00546 .00573 . 00595 . 00624 . .00654 . 00806 .013 .024 Inch. 0. .00074 . 00069 .00073 . 00075 .00075 '. 00083 .00017 ; 00018 .00022 . 00020 . 00020 .00027 .00022 .00029 . 00030 . 00152 . 00494 .011 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General summary. Tensile streiig:th per square incli of ori^lDal section pounds.. 183,400 Elastic limit per square Inch of original section do... 165,000 Elongation per inch after rupture inch.. .021 Elongation per inch under s.train at elastic limit , ' do... .00654 Reduction in area after rupture, per centum of original section 48.0 Position of ruptare 3". 5 outside the gauged section Character of broken surface line silky H. Ex. 166 42 658 SQUARE AND PLAT STEEL WIRE. Sample 3. No. 3778. Sectional area ".0758 x".1510=".011 square inch. Gauged length, 10". Applied loads. Elongation per inch. Snocesslve elongation per incii. Permanent set. Saccessive permanent set. Eemarks. Total. Per square inch. Pounds. 55 220 440 660 880 1,100 1,320 1,375 1,430 1,485 1,540 1,695 1,650 1.705 l,-760 • 1, 815 1,870 1,925 1,980 2,035 2,058 Pounds. 5,000 20,000 40, 000 60, 000 80, 000 100, 000 120, 000 125, 000 130, 000 135, 000 140,000 145, 000 150, 000 155, 000 16U, 000 165,000 170, 000 175, 000 ISO, 000 185, 000 187, 090 Inch. 0. . 00065 . 00135 . 00209 . 00274 . 00345 . 00424 . 00438 . 00458 . 00479 . 00499 . 00527 . 00547 . 00577 .09615 . 00682 . 00855 .01245 .022 .031 Inch. 0. .00065 . 00070 .00074 . 00065 .00071 . 00079 .00014 . 00020 . 00021 .00020 . 00028 .00020 .00030 .00038 . 00067 . 00173 . 00390 . 00955 .009 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General summary. Tensile strength, per square inch of original section - pounds.. 187,090 Elastic limit per square inch of original section do .. 160,000 EloDgatiou per inch after rupture inch . . . 027 Elongation per inch unde?* strain at elastic limit do... . 00615 Beduction in area after rupture, per centum of original section 36.4 Position of rupture 1".90 outside the gauged sertion Character of broken surface , fine silky SQUARE AND FLAT STEEL WIRE. No. 3779. 659 Sectional area, ".1510x''.075G=.011 square inch. Gauged length, 10". Applied loads. Elongation per inch. SnooosslTe elongation por incli. Permanent set. Successive permanent set. Bemajks. Total. Per square inch. Pounds. 55 220 440 660 880 1,100 1,320 1,375 1,430 1,486 1,540 1,595 1,650 1,705 1,760 1,815 1,870 1,925 1,980 2,033 2,063 Pounds. , 5, 000 20, 000 40, 000 60, 000 eo, 000 100, 000 120, 000 126,000 130, 000 136, 000 140, 000 145, 000 • 150, 000 155, 000 160,000 185, 000 170, 000 175. 000 180, 000 185, 000 187,550 Inch. 0.V .00071 . 00138 .00212 . 00282 . 00357 . 00428 .00444 .00468 .00488 . 00511 .00532 . 00559 . 00589 . 0U622 . 00694 . 00863 .01180 .023 .029 Inch. 0. . 00071 . 00067 .00074 . 00070 .00075 . 00071 . 00016 . 00024 .00020 . 00023 .00021 . 00027 . 0003O . O0O33 . 00072 .00169 . 00317 . 01020 .007 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General summary. Tensile strength per sqnare incIi of original section ....pounds.. 187,550 !EIastic limit per square inch of originaTsectiou do... 160,000 Elongation per inch after rupture inch. . . 031 Elongation per inch under strain at elastic limit do... .00622 Keduction in area after rupture, per centum of original section ■. 40. Position of rapture 3".2S outside of the gauged section Character of broken surface ttue uilky 660 SQUARE AND FLAT STEEL WIRE. 1^0. 3780. Sectional area, ".1510x".0756=.011 square inch. Gauged lehgth, 10". Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. Successive permanent set. Kemarks. Total. Per anuare inch. Potinds. 55 220 440 , 660 880 1,100 1,320 1,?75 1,430 1,485 1,540 1,595 1,660 1,705 1,760 1,815 1,870 1,925 1,980 2,035 Pounds. 6,000 20, 000 40, 000 60, OCO 80. 000 100, 000 120, 000 125, 000 130, 000 136, 000 140, 000 145, 000 150, 000 155, 000 160. 000 165, 000 170. 000 175, 000 180, 000 185, 000 Inch. 0. . 00069 .00142 . 00211 .00282 . 00362 .00428 .00444 . 00462 .00484 . 00506 . 00529 . 00559 . 00582 . 00622 . 00703 . 00918 .015 .020 .031 Inch. 0. . 00069 . 00073 .00069 .00071 . 00070 . 00076 .00016 .00018 . 00022 .00022 . 00023 . 00030 . 00023 . 00040 . 00081 .00215 . 00582 .005 .011 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. Gen&i'al summary. Tensile strength per square inch of original section pounds . . 185, 000 Elastic limit per square inch of original section do... 155, 000 Elongation perlDcn after rupture ...inch.. .022 Elongation per inch under strain at elastic limit do... .00582 Seduction in area after rupture, per centum of original section 30.9 Position of rupture 7". 9 outside the ganged section Character of broken surface _ fine silky SQUARE ANP FLAT STEEL WIEE. Smnple 4. No. 3781.. Sectional area, ".1483 x ".0742 = .011 square inch. Gauged length, 10". 661 Applied loails. Elongation per inch. Successive elongation per inch. Permanent set. Snccessive permanent set. Bemarks. Total. Per square inoli. Pound*. 55 220 440 660 880 1,100 1,320 1,375 1,430 1,485 1,540 1,595 1,650 1,705 1,760 Pounds. 5,000 20, 000 40,000 60,000 80, 000 100, 000 120, 000 125, 000 130, 000 135,000 140,000 145,000 . 150, 000 155, 000 160,000 Inch. 0. . 00074 . 00146 .00218 . 00294 . 00370 .00464 . 00489 . 00530 .00589 . 00685 . 00862 . 01225 .017 .023 Inch. 0. . 00074 . 00072 .00072 . 00076 .00076 . 00094 . 00025 .00041 . 00059 .00096 .00177 .00363 .00475 .006 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. General summary. Tensile strength per square inch of original section pounds.. 160,000 Elastic limit per square inch of original section do..^ 125,000 Elongation per inch after rapture ^ ^ inch.. .012 Elongation per inch under strain at elastic limit do 00489 Beduction in area after rupture, per centum of original tection 40. Position of rupture ll".l outside the gauged section Character of oroken surface fine silky 662 SQUARE AND FLAT STEEL WIRE. :So. 3782. Sectional area, ".1484x".0746=.011 square inch. Gauged length, 10". Applied loads. Elongation per inch. Successive elongation per Inch. Permanent set. Successive perraanout set. Eemaiks. Total. Per square inch. Pounds. 55 220 440 660 880 1,100 1,320 1,375 1,430 1,485 1,540 1,595 1,650 1,690 Pounds. 5,000 20,000 40, 000 60, 000 80, 000 100, 000 120, 000 122,000 130, 000 135,000 140, 000 145, 000 150, 000 153,640 Inch. 0. .00072 . 00147 . 00220 . 00291 .00368 .00471 .00512 . 00570 . 00648 .00739 .00880 . 01138 Inch. 0. .00072 . 00075 .00073 . 00071 .00077 .00103 .00041 . 00058 . 00078 . 00091 . 00141 . 00258 Inch. 0. Inch. 0. Initial load. Jp:iastic limit. Teusile strength. General summary. Tensile stroDgth pe^r square inch of original section pounds.. 153, 6i0 Elastic limit per square incli of original section .do... 120,000 Elongation per inch, after mpture inch.. .014 Elongation per inch under strain at elastic limit do... .00471 Keduction in area after rupture, per centum of original section 48. 2 Position of rupture 1".25 inside the gauged section Character of broken surface fine silky SQUARE AND PLAT STEEL WIEE. Ko. 3783. 663 Sectional area, ".1484 x ".0744=:.011 square inch. Gauged length, 10". Applied loads. Elongation per inoh. SuccessiTe elongation per inoli. Permanent set. Successive permanent set. Eemarks. Total. Per sqaare inch. Pounds. 55 220 440 660 880 1,100 1,820 1,375 1,430 1,485 1,540 1,695 1,650 1,705 1,760 1,784 Pounds. 5,000 20, 000 40, 000 6O,OO0 80, 000 100, 000 120, 000 125,000 130, 000 135,000 140, 000 145, 000 150, 000 155, 000 160, 000 162, 180 . Inch. 0. . 00075 . 00140 . 00222 . 00294 . 00369 .00465 . 00489 .00519 .00559 . 00613 . 00700 . 00878 .012 .014 Inch. 0. . 00075 . 00065 .00082 .00072 , 00075 . 00096 .00024 . 00030 .00040 . 00054 . 00087 . 00178 .00322 .002 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. ■ General aummary. Tensile strength per square inch of original section pounds . - 162, 180 Elasticlimit per square inoli of originalsection do... 130,000 Elongation per inch after rupture ^ inch.. .008 Elongation per inch under strain at elastic limit : do. .. .00519 Seduction in area after mpture, per centum of original section. 49.1 Position of rupture 2". 3 outside the gauged section Character of broken surface , .....fine silky 664 SQUARE AND FLAT STEEL WIRE. I g Em O 2 o 1^ go I Eh 2 o o 1 *9 (0 ■a ■2 .s 1 1 ■J3 1 P4 •^ rS •3 I« u ,-«^-'^-»^ /^y^^\ ^l-^wl-^ (-•-^'■^^ S • • i eS « >> I ; i 1^^ eu vo-a 'S'O'O fCJ'O'S <1 : ; ; ; : ; ; : ; jli ■^lOlQO mino HlOOi oe-io <±9oad OQO CO eo-^co %. ft< . vOJSSiM oaaea eoco cet>co 1 GQ li li if II II II li If If i '' "" 000 000 000 « XXX XXX XXX XXX ■< 000 1 s UdrHrH t-r-(N pi ^00 .9 e^-< • ' • pi I-(l-ll-t MMCT WMCO ■«*i-*-* Cm eSE: > q- egoaeo CO com eoMCO SQUARE AND FLAT STEEL WIEE. 665 wire in store at watertown .arsenal^ Bleotrioallt Welded ".15 square Tinned Steel Wirb. Welds made at the works of the Thomson Electric Welding Com- pany, Lynn, Mass. Welding Ijurrs removed before testing. No. of test. Oimenaions of ■wire. Sectional area. Size of welding burr. Tensile strength. Total. Per square inch. 2916 2917 2918 2919 2920 2921 Inch. .1496X.1503 .1496X.1503 . 1496 X. 1503 . 1496 X. 1603 . 1496 X. 1503 . 1496 X. 1603 So. inch. .0226 .0226 .0225 .0226 .0226 .0226 Inch. .25X.26 .23X.24 .23X.23 .24X.24 .23X.24 .23X.24 Pounds. 2,760 2,654 2,704 2,645 2,612 2,805 Pounds. 123, 670 117, 960 120, 180 117,560 116, 090 124, 670 All specimens fractured at the welds except Ko. 2918. Bleotrioallt Annealed ".15 square Tinned Steel Wire. Specimens of square tinned steel wire which were annealed in the welding machine but not welded. No. of test. Kominal size of wire. Actual dimen- sions of wire. Tensile strength. Bemarks. area. Total. Per sq. inch. 2922 2923 2924 2925 2926 2927 2928 ".IS square.. ".15Bquar».. ".16 square.. ".10 square.. ".10 square. . ".10 square.. ".10 square.. Inch. . 1498 X. 1498 . 1500 X. 1602 . 1498 X. 1500 . 1000 X. 1000 . 0998 X. 0096 . 1000 X. 1000 . 0998 X. 0998 Sq. inch. .0224 .0225 .0225 .0100 .0099 .0100 .0100 Pounds. 2,686 2,597 2,384 1,485 1,432 1,428 1,399 Pounds. 115,460^ 115,420^ 105, 960 j 148, 600 J 144, 650 1 142, 800 1 139, 900 1 Heated bright red; cooled without hoiax. Heated to a' welding heat, and cooled in clamps with borax. Heated to welding heat and cooled In clamps without borax. Heated bright red, and cooled with borax. . Heated to welding heat with borax. Heated to weldin gheatwith* out borax. Heated bright red without borax. ALUMINUM, AND ALUMINUM BRASS AND BRONZE, FKOM THE ALUMINUM COMPANY, LIMITED, OLDBUEG, NEAE BIRMINGHAM, ENGLAND. 667 ALUMINUM AND ALUMINUM BRASS AND BRONZE. 669 In making the hardness determinations, two different pressures were employed. The usual pressure, 10,000 pounds, was applied to one specimen each of 10 per cent, aluminum bronze and 3 per cent, aluminum brass; these being Nos. 4191 and 4194 respectively. The hardness of these specimens is therefore directly comparable with the hardness of other metals as ordinarily reported. On account of the softness of the pure aluminum specimens, a lower pressure was used on the indenting tool. Four thousand four hundred pounds made a cut extending diametrically nearly across the specimen, therefore no higher pressure was applied, and to furnish data for direct comparisons among these specimens, one piece of each of the aluminum bronze and aluminum brass was indented with the same pressure. ALUMINUM. No. 4188. Mark, 1. Diameter, ".769. Sectional area, .464 square inch. Gauged length, 6". Applied loads. Elongation per inch. SnccessiTe elongation per inch. Permanent set. Successive permanent set. Eemarks. Total. Per square inch. Pounds. 464 928 1,392 1,856 2,320 2,784 3,248 3,712 4,176 4,640 5,104 5,568 6,032 6,496 6,960 7,424 7,888 8,352 8,660 Pounds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000. 8,000 9,000 10, 000 U, 000 12, 000 13, 000 14, 000 15, 000 16, 000 17, 000 18,000 18,450 Inch. 0. .000133 .000267 .000367 . 000517 . 000750 .001183 . 002083 . 003967 . 006250 .009883 . 013600 . 020100 . 027417 .0350 .0500 .0700 .1167 Inch. 0. . 000133 . 000134 .000100 . 000160 . 000167 .000433 . OOOOOO . 001884 . 002283 .003633 . 003717 .012500 .007317 . 007583 .0150 .0200 .0467 Inch. 0. 0.. Inch. 0. Initial load. Elastic limit. Surface presents wavy appearance. Tensile strength. . 0P0033 . 000033 . 000500 .000467 -.006133 . 004633 . 012167 . 007034 .025667 . 013500 General summary. Specific gravity.... w 2.7199 Hardness, under pressure of 4, 400 pounds 4, 63 Tensile atreDgth per stiuare inch or original section .,. pounds.. 18,450 Elastic limit per square inch of original section do . . . 5, 000 Elongation per inch after rupture - inch,. .1867 Elongation per inch under strain at elastic limit do... ,000517 Keduction in diameter at point of rupture do... . 149 Redaction in area after rupture, per centum of original section 34. 9 Position of rnpture ".5 from neck Character of broken aarface silky ; oblique :piongatio9 of inch sections ".30*, ".18/'.20, ".17, ".15, ".12 670 ALUMINUM, AND ALUMINUM BRASS AND BRONZE. ALUMINUM. No. 4189. Marks, 2. Diameter, ".788. Sectional area, .488 square inch. Gauged length, 6". Applied loads. Bloneation per inch. Successive elongation per inch. Permanent set. Successive permanent set. Bemarks. Total. Per square inch. Pounds. 488 976 1,464 1,952 2,440 2,928 3,416 3,904 4,392 4,880 5,368 6,856 6,344 6,832 7, 320 7,808 8,296 8,784 8,920 Pounds. 1,000 2,000 3,000 4,000 5,000 6, too 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14,000 15,000 16,000 17, 000 18, 000 18,280 Inch. 0. .000117 . 000200 . 000300 .000383 . 000483 . 000633 .000800 . 001000 . 001817 .003167 . 006050 . 008800 .013800 . 020417 . 029517 .0467 .0833 Inch. 0. .000117 .000083 .000100 .000083 . 000100 .000150 . 000167 .000200 .000817 . 001350 .001883 . 003750 . 005000 . 006617 . 009100 .017183 .0366 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Surface presents wavy appearance. Tensile strength. 0. 0. 0. .000050 .000050 .000833 . 000783 . 003833 . 0(13000 . 012300 . 008467 .027783 .015483 General summary. Specific gravity 2.7242 Hardness, under pressure of 4, 400 pounds 4.25 Tensile strength per square inch of original section pounds.. 18,280 Elastic limit per square inch of original section do . . . 8, 000 Elongation periuch after rupture inch.. .1817 Elongation per inch under strain at elastic limit do... . 000800 Betluction in diameter at point of ruptnre do . . . . 248 Beductionin area after rupture, per centum of original section , 53.1 Position of rapture -'. 2".3fromneok Character of broken surface silky ; oblique Elongation of inch sections , ".16, ".49*, ".22, ".10, ".07, ".05 ALUMINUM, AND ALUMINUM BRASS AND BKONZE. ALUMINUM. 671 No. 4190. Mark, 3. Diameter, ".779. Sectional area, .477 square inch. Gauged length, 6". Applied loads. Elongation per inch. Successive elongation per inch. Permanent set.: Successive permanent set. Bemarks. Total. Per square inch. Pounds. 477 954 1,431 1,908 2,385 2,802 3,339 3,816 4,293 4,770 5,247 5,724 6,201 6,678 7,155 7,632 8,109 8,586 8,770 Poitnds. 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 15,000 16, 000 17, 000 18, 000 18, 390 Inch. 0. .000117 . 000200 .000300 . 000383 .000467 . 000633 . 0008S0 .001233 .002050 .003133 . 005283 .008767 , 013800 .019717 .OSOiiSS .0467 .0783 Inch. 0. .000117 . 000083 .000100 . 000083 .000084 .000166 .000217 .000383 .000817 . 001083 .0021.'i0 . 003484 . 005033 . 005917 . 010816 . 016167 .0316 Inch. 0. 0. Inch. 0. Initial load. Elastic limit Tensile strength. 0. 0. . 000133 . 000133 .001083 . 000950 .004050 .002967 General summary. Tensile strength per square inch of original section pounds ■ . 18, 390 Mastic limit per sqaar^ inch of original section do... 6,000 Elonj^ation per inch after rupture inch.. .1050 Elongation per inch under strain at elastic limit do . . , . 000467 Keductiou in diameter at point of rnptare do... .119 Seduction in area after rupture, per centum of original section 28. 3 Ponitionof rupture ..,-., 4" from neck Character of broken surface silky, oblique Elongation of inch sections ".07, ".U9, ".07, ".08, ".10, ".22* 672 ALUMINUM, AND ALUMINUM BRASS ANDJJ3E0NZE. 10 PER CENT. ALUMINUM BRONZE. No. 4191. Marks, 4-10. , Diameter, ".798. Sectional area, .50 square incb Gauged length, 6". Applied loadB. Total P^^X*™ Elongation per inch. ^iiSfl'tlr , Permanent, elongation j^ per inch. Snccesaive permanent set. Kemarks. Poitnds. 600 2,500 5,000 7,500 9,000 9,600 10, 000 10, 500 11,000 11,600 12, 000 12, 500 13, 000 13, 500 14, 000 U, 500 15, 000 15, 500 16, 000 10, 500 17, 000 17, 500 18, 000 18, 500 19, 000 19, 500 20, 000 20, 500 21, 000 21, 500 22, 000 22, 500 23, 000 23,600 24, 000 24, 500 25, 000 25, 500 26, 000 26, 500 27, 000 27, 500 28, 000 28, 500 29, 000 29, 500 30, 000 80, 600 31, 000 31, 500 32, 000 32, 600 33, 000 33, 500 , '84, 000 34, 600 34,840 Pounds. 1,000 5,000 10, 000 15, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24, 000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 41, 000 42, 000 43, 000 44, 000 45, 000 46, 000 47, 000 48, 000 49, 000 50, 000 51, 000 52, 000 53, 000 54, 000 65, 000 56, 000 57, 000 58, 000 69, 000 60, 000 61, 000 62, 000 63, OCO 64, 000 65, OOO 66, 000 67, OOO 68. 000 69, 000 69, 680 Inch. 0. . 000300 . 000633 . 001000 . 001160 . 001200 . 001467 . 001600 .001800 . 002033 . 002367 '. 002833 . 003200 . 003833 . 004500 .005300 . 006367 .007117 . 008033 . 009583 . 010667 . 012500 .013167 . OI6O0O . 018083 . 020333 .023117 .0267 . 0292. .0317 .0350 .0883 .0433 .0483 .0517 .0650 .0617 .0667 . 0700 .0767 ,0960 .1000 .1067 .1133 .1200 .1300 .1383 .1467 .1550 .1660 .1783 .1867 .2000 .2167 Inch. 0. . 000300 . 000333 . 000367 .000150 . 000060 . 000267 .000133 . 000200 . 000233 . 000334 . 000466 . 000367 : 000633 . 000667 . 000800 .001067 . 000850 . 000916 .001550 .001084 .0018.i3 . 000667 . 002833 . 002083 : 002250 . 002784 . 002583 .0025 .0025 .0033 .0033 . 0050 .0050 .0034 .0033 .0067 .0050 .0033 .0067 .0066 .0050 .0067 .0030 .0067 .0066 .0067 .0100 .0083 .0084 .0083 .0100 .0133 .0084 .0133 .0167 Inch. Inch. ".wmiT . 000033 .000017 . 000016 . 000150 .000117 . 001033 .000883 . 003867 . 002834 Initial load. Elastic limit. Tenaile strength. General summary. Speoiflo gravity 7.6292 Hardness, under pressure of 10,000 pounds 8.09 Tensile strength per square inch, of original section pounds . . 69, 680 Elasticlimit per square inch of original section inch.. 19,000 Elongation per inch after rupture do... .2067 Elongation per inch under strain at elasticlimit do... .001200 Eediiction in diameter at point of rupture do... .028 Keduction In area after rupture, per centnm of original section 6. 8 Position of rapture .' at neck Character of broken surface, light yellow color, uniformly fine silky. Five radial cracks extending in a longitudinal direction a maximum length of ".7 were de veloped at the place of rupture. These cracks began to open at 50,000 pounds per square inch stress. The walls of the cracks were smooth. 1".5 from the end opposite the fracture the specimen was drawn down to ".70 diameter. Elongation of inch sections ".25, ".27, ".21, ".18, ".16 ".17* ALUMINUM AND ALUMINUM BRASS AND BRONZE. 10 PER CENT. ALUMINUM BRONZE. No. 4192. Marks, 5=10. t>iameter, ".795. Sectional area, .496 square inch. Gauged length, 6". 673 Applied loads. Elongation per Tncli. Successive elongation per inch. Permanent set. Sncceasire permanent set. Bemarks. Total. Per sqnare incn. Poundi. 496 2,480 4,960 7,440 7,936 8,432 8,928 9,424 9; 920 10,416 10,912 11,408 11,904 12,400 12, 896 13, 392 13,888 14,.384 14,880 15, 872 16, 864 17,856 18, 848 19, 840 20,832 21, 834 22, 816 23, 808 24, 800 25,792 26,784 27,776 28, 768 29,760 30, 762 31, 744 32, 736 Pounii. 1,000 5,000 10, 060 15,000 16. 000 17, 000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 14, 000 25, 000 26, 000 27,000 28, 000 29, 000 30, 000 32, 000 34, 000 36, 000 38,000 40,000 42, 000 44, 000 46,000 48,000 50, 000 52, 000 54,000 56, 000 58, 000 jSO, 000 62, 000 64,000 66, 000 Inch. 0. . 000250 .000583 . 000933 • .001033 .001100 . 001200 .001300 .001883 .001467 . 001633 .001783 .001900 .002067 .002217 . 002467 . 002800 .003167 .003633 .004667 . 005967 .008017 . 010367 . 013133 .016833 .019800 .024367 . 029333 .035750 .0450 .0517 .0617 .0700 .0817 .0950 .1117 .1283 Xnch. 0. .000260 . 000333 .000350 . 000100 .000067 .000100 .000100 .000083 .000084 .000166 . 000150 .000117 . 000167 . 000160 . 000150 .000333 . 000367 . 000466 .001034 . 001300 - . 002050 . 002350 . 002766 .002700 . 00J967 .004567 . 004066 .006417 .009260 .0067 .0100 .0083 .0117 .0133 .0167 .0166 ' - Inch. 0. 0. 0. . 000033 Inch. 0. Initial load. Elastic limit (approxi- mate). Specimen drawing down at eiicli neck. Tensile strength. .000033 .000150 .000117 .000480 .000333 .001567 . 001084 .009467 . 007900 0.30533 . 021066 - General summary. Specific gravity 7.5773 Hardness, under pressure of 4,400 poands 27.99 < rH CO C-< 01 ^^ 'CO t<: > W t^ d o K?*c>. ; (M . CT WB M> J t> i 00 aS « ■k « « ^ IN m e-1 1- «o» <* O ss 1 - tHOMrH OiH Cfl rH ^ « kAt-OtO ' 0094 ffl t- eo •^ rHOr-jS OrH rH O .9 .^ b-OOOCO 0« N t- S = g '-J-^®'^ -.1 1 ■= gl ^ owe- 1-1 iHCO 04 CD ^ - MWOW rHrH iM O ■s * * e3 ^ oooot- r^t-H ei CO m bll s FH- ea F4 « aoooo> 1-iCO C- 00 00 ,5 r-( 115 u rC£ A 00 0> CO 1000 00 00 00 g l^-t-^-t> osa o» o> t-t- t- t- po ^5 . . . . • • > • • '-i ; CO ; ' ' s • eS 1 i i*^ ; • ^ ! : : 1 i ■ a i r^ s i i : ;l ; i : '-i [ ii i B : • S ', I S 1 h e B'O'O p. ■ ■ CO I fO *, 's^ aoo>o.-i flflCO ■* U5 CO o S 00 00 San am Qi oa a, i^^ ^ h'^Tti'^ ■*^ H -"Jl ■* 51 BEONZE FROM FRACTURED TRAY HINGE. 679 TENSILE TEST OF BRONZE SPECIMENS TAKEN FROM FRAGMENT OF FRACTURED TRAY HINGE OF 12" B. L. CAST IRON RIFLE. Form, of specimens. ^ No. 3873. Diameter, ".564. Sectional area, .25 square incli. Elastic limit, 3,120 pounds = 12,480 pounds per square inch. Tensile strength, 5,540 pounds = 22,160 pounds per square iuch. Elongation in 2 inches, ".23 = 1 1.5 per cent. Elongation of inch sections, ".13*, ".10. Diameter at fracture, ".51 ; area, .204 square inch. * Contraction of area, 18.3 per ceut. Fractured at the neck. Appearance, light-yellow color. Opened numerous cracks along surface of stem. Ko. 3874. Diameter, ".564. Sectional area, .25 square inch. Elastic limit, 3,20(t pounds = 12,800 pounds per square inch. Tensile strength, 5,290 pounds = 21,160 pounds per square inch. Elongation in 3 inches, ".30 = 10 per cent. Elongation of inch sections, ".17*, ".07, ".06. Diameter at fracture, ".53 ; area, .221 square inch. Contraction of area, 11.8 per cent. Fractured ".75 from the neck. Appearance, variegated, showing light-yellow, copper-colored, and greenish-brown metal. Opened numer- ous cracks in the surface of the stem. BRASS AND STEEL TAPE FOB ENGINEER CORPS, U. S. ARMY. 681 BRASS AND STEEL RIBBON TAPE. No. 3877. Brass Tape. Dimensions, ".128 x ".0128. Sectional area, .0016 square inch. Gauged length, 6". Tested with broad faces in a vertical plane. 683 Applied loads. In gauged length. Bemarks. Total. Per sgnare inch. Elongation. Set. Pound*. 20 30 40 60 60 40 20 30 40 50 60 70 80 90 96 Founds. Inch. 0. .0036 .0064 .0164 .0157 .0104 ape now tes 0. .0028 .0048 .0080 .0120 .0157 .0225 .0411 Inch. 0. .0001 .0012 .0046 Initial load. ad face in an horizontal plane. Micrometer reset to zero. Tensile strength. .0050 ted with bro 0. 0. .0006 .0011 .0015 .0030 .0063 .0217 1 60 000 684 BRASS AND STEEL RIBBON TAPE. No. 3878. Steel Tape. Dimensions, ".129 x ".0130. Sectional area, .0017 square inch. Gauged length, 6". Tested with broad face in an horizontal plane. Applied loads. In ganged length. Kemarks. Total. Per square inch. Elongation. Set. Pounie, 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 260 280 300 387 Founds, Inch, 0. .0021 .0034 .0048 .0063 .0074 .0090 .0104 .0117 .0136 .0152 .0166 .0177 .0192 .0209 .0220 .0232 .0248 .0261 .0281 .0296 .0306 .0321 .0348 .0376 .0403 Inch, 0. .0007 .0006 .0005 .0005 .0009 Initial load. Tensile strength. .0016 .0018 .0023 .0036 227, 650 ALTERNATE STRAINING, BY TENSION AND COMPRESSION, OP STEEL, WROCGHT-IRON, AND CAST-IRON BARS. Continued from Report of Teats, 1689. Cast-iron specimens taken from ooudemued 12-inch mortar body, No. 1. 685 ALTERNATE STRAINING, TENSION AND COMPRESSION. 687 © d n a ^^ a d ,a be '^ ti Si »^ Cu a ID 0< -w '-3 1 5^ •a a eg .2 00 a CO a T-i eS o o 00 © W O ^H I— I arH__ gSMOO o 10 ?** Mq a iS S ts cs cs ra a as Jl 2 f='3 ■» a a (B "^ MS® ■g a .§:: ^ 1 I Z3 S CO CO C<3 CO OT CO CO 0000000 0000000 0000000 I I I c*r«:orBcOi-«i-ieoeo WtHOOOOOOO OOOOOiOOOO eoeooeooo 1 + I I OQD-HCO-^O-lHeOC 0000 -000 = oooooeooc 0000 0000 0000 0000 I I I I 0000 O O O 3 o o oe 0000 f I f+ e O O O O O O O O O Q O'kA LA O O O O U » tan 3coor~t-ooe '-S53SSS'^'-aSeSSan--rt««»««.^ 688 ALTERNATE STEAINING, TENSION AND COMPEESSION. V B -.5 a o O 'I 'o to d 1 1 • After 3 mlnutea>. After 3 minutes.. After 3 minnteB.. 1 a s 1 § a K a 0) g 1. 1 I • 1 > • 1 Ii-.MiH^«J -M I »0 t 1 lo ■ to > > • t [ ■ '£12 ■ '• 1 • I ■' I^oooo .^ .C3 . . JO jO J • • J« ; lOO 'a 1 tn 1 1 1 t 1 1 |3 M M N t • 1 • 1 1 It^O'-'iMin -la 'h • • • \ • ! 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O0OO4 . 00006 i'i 'si ■ •§ ■ill SSS : i g -co -coo ■ 'CO -moo oo^ ■ • O ;o -OO J jo |ooo ooo '• I * 1 ■ j • * . i ■ 1 • • *d • • * : ; 3 o H 1 oooooooooooooS I I t I 1 1 1+ ' ' 1 1 f+ ■ ' ■ ' i : : I § ;i .11 ; ;i iiiililg \ \ O 1 So SS2SS2S9SSSS22S'='='="=<="='«"="='oooooooooooooo SSSS^SSSSSS^SSSSSSSSSSSS g'g S g SS g SS B g'S § §" H 1° ooooooc 'o"i-H !M*n"00''(N'C' ^^ S fl ?§ W M ? 141, 360 70, 680 325, 128 332, 196 339, 264 346, 332 353, 400 70, 680 141, 360 ■212, 040 .282, 720 OOOOO lo loOOOOOOQtD loO oooo^ ■ IO looooo^urm iS^ i'iiil is isgssrssfs¥- isa" ALTERNATE STRAINING, TENSION AND COMPRESSION. 689 s 1 1 1 93 § SSS? i i ; i ; ill ; ; ; ; ; OOO I I 1 > • o i ill i i : : i i ill : H n OOO I ■ i i I g ill ; ; i i i f i + i i : : ! :g : O . ■ I CI M in N o s : : iiiiii o 1 1 I ooooo :i ; i 1 ; 3 : : :£3tSg?2g o ; I .ooooo . 00437 . 00082 . 00058 — . 00011 — '. 00034 — . 00036 — . 00035 —.00038 .'ooiae" . 00037 . 00040 .00048 . 00060 . 00247 . 00305 . 00294 . 00260 . 00225 . 00190 . 00152 .00125 . 00165 .00213 . 00273 ooooooooooooooooo 0000^000=:0=iOOC3000 oo'ecrt-'cTco'crooo'o'ocso'o'o' in in in lo lo ^ co-w .-t>-l<^^Mr-lc^Jc^^■^ln Si its mm ffl ii 5 o o OOOOOOOO -a a ..-I o o SO H. Ex., 165- -4^ 690 ALTEKNATE STRAINING, TENSION AND COMPRESSION. 6 !2i O P=< ^ c i o CO '^ CD 05 : lo c-i _ J C-. o -73 ca 'w ■Jaa 9 => 5^ b CO t: ^ -« sags '^ !> S CS (D r^ ^^ t^ ^ TO bo .S "ca a a c8 -a n3 03 a a ® EH a o .a 13 •r-l a a .2 3 o o CO CO CO —I I— 1—1 03 a a 0) a "S o CS c3 a w eo (V lO ;o t- — "M lO CO (M ?J (M CO W W 70 O O =) O =S o o C3 3 O => O O O o © oo o oo in w O) o 00 « ift to ro — lo — o> !o I*- -^ in in in ■T^ tc o o ooo o o O C3 ^ O O C3 O f r 1 1 o o o o o o oo till I I _cowi-'«oirs 013 ^r ^H ooooooo tan wo CMOOOOO — "O 0=> o:3^ooo oo oo 'Oooooo oo in w . CO o CO t> -* to OCT {»00t>I— t~® CO-M M CM OI 70 « M I I : I I I' I I I OOOOOOOOOOOCI-OOOOOOOOOOOO ^30000=iOOOOO=iOOOOOC3000000 sooooooooooE-ooo— ■— MrS'^^com S == £ rf^S" ^rf ^'^ri ^'^' w ■^^lx■x■co'"^n(N"al ed r^'m o'w i^ t-2;:^2gr'-*c-c-'d^:-HXoooo^f-irse)(NTO-*iniot-'* ALTERNATE STEAINING, TENSION AND COMPKESSION. 691 I a a> nn ys n n n TX 7^ 5 ^3^ O O Mil', lOODCtimoCin'MC'iO ooceoci-ooo t-nrJifflNt-ff'5(»eDtr>o eomeo^^MMefl'M(DCD oosooo cooo oooooocooo 1+ i oooffoiftcinooNt-t- -I I f f I'ff Iff t^ in c -+< •-I re oc -^ o o o — ' c => = o c: O O O —' ~1 O *tt O 3 OO I + to 1(5 l- o rt — in o o o ooo no ^ (-( o -« •-CM to OOO OOO M o r-i o o ^O O O 13 o ^ o o o i 1 + INI •n o loi- t* tM (SCO — ooo o o o o o o o o ! I f I 00000000000000-3000000 gggggggggggggagggiggg ggggggggggggg sssssssssssssssssssss SS2SS52SS5SSS 212,010 282, 720 353,400 282, 720 212,010 111, 360 70, 680 141, 360 282, 720 141,360 70, 680 HI, 380 212, 010 282, 720 353, 400 282, 720 212, 040 141, 360 70,680 353, 400 360, 468 367, 530 353, 400 70, Ii80 141,300 212, 0111 282, 720 70, 680 HI, 360 212, 010 282, 720 70, 680 111, 360 353, 400 a a « o o CO eg bo cS OI 692 ALTERNATE STRAINING, TENSION AND COMPRESSION. « a ea eo o 50 t~ IM B , O O ja ^ f this test.) s and 21 days wit ■ o /a a jj += a) u a H e8 o ■n a g M to cs a t^ 13 ,. .b § t2 f^ §8^ |!^ 1—1 TS 1-; -W 1 1^ «3 10 00(0 iiii 11 3 O H ■S CO Ol IM O C3 O © O 00 = 1 f f f 2B If 1 i g Li 1 i a i ID += a s I i o d in i •^ 1 ! 3 O H ■si oc O i i ; O .9 (0 p. 1 1 □ o 6 > i § CO Inch. 0. . 00029 . 00034 . 00035 . 00036 . 00038 — . 00033 — . 00030 — . 00032 i i : 3 o Inch. 0. .00409 . 00442 .00177 . 00313 .00551 . 00518 .00485 .00449 . 00417 n ■ • o 1 ■ O i ■ft ft 1 . I'" Pounds. 10, 000 20, (lOO 30, 000 4(J, 000 60, 000 40, 000 30, 000 20, 01)0 10, 000 10, 000 20, 000 30, 000 40, 000 40, 000 10, 000 20, 000 3 o (5 g §5 3s -I s o ! g 1 g ? c Sv c^ c op oeo ALTERNATE STRAINING, TENSION AND COMPRESSION. 693 « d -1.^ Cm O e 13 >i-t a bi 08 .■4-3 bti ■4H .—1 rS a 4-^ 93 >? t-i ns S "S ^ ,o g -d ^ (U 1 o |5 1 -l« S 5 S « P.—' S « — ® S «J3 f^.S H .Sf o C MNC tH o COG o • ooc o rfiOOG 1 1+^ o - + p ^1 «-csa o ' t^ a 1^ WOOSO ■cri S"-" S cU «,y= inr^ii- n . — h-- r- ffl a |ooia c» «5 a CO ffl « bD s ri Mj- 09 4--M i a Of b S « «« 3 a iHNoa o CO 3 ,a bo a o u c3 a ■3, t.4 « a a c8 c3 .a ■+3 bO a 1 o >5' .O O) a o -c ^ o a o h5 IS 694 ALTERNATE STRAINING, TENSION AND COMPRESSION. I T3 £1 3 a 00 i .•7S a 04 c3 p. a a o S « ra CO be .g e 5 o H I' I" I . t- If? -# ■©■1 O O 'O => ' coo o t- I- lO ■ in o o ■ooo o o o 00 in o ■ W COtJI • O O C3 ' ' o o o I I iooooooooooooooo es o oooooooSoooooooooo S ri 1— iH fHNCQ N W eo rom CO >» -a s s c u CO L— o=5^■^■^mm^ooc5o^oo£~L■- -l Ol PI 94 cq iM G ■^ » - " SB Sie s O) o 0) in n cs si _o CO fe ~ o . -• s ^ lO .3 = s c ai ■2 ^2 Ma" cs c3 a> M-c 3 M ■" IO s:: QD (M "H i E ■ o 1 g B 8 (0 •t3 R -a o _a -ft 49 V 1 (S p. 6 > s 5s 1 o s ;| ■§ O • O ■ C3 o ■ o ■ o Mi! ill; , .0 1 ;QO ; •3 1 o 1 Si is 's 1 11 1 1 ;°' ;°' i i J O 'O ■ o f :l' if 1 © ■ loo I ! i.M !l M a 1 1 a o O 1 02 1 i C7J ! (o "pa § ■ o ' o iH • m ■ -^ QO -— 1 .« -o ^ ■ i • c^ loo 'oo j i . 00628 .60627" .00630 .'66.529 " .00542 .00565 o p i p. g 1 ig is *^° i 1 ;i ii i i ill i :| o H ■ i-H |> Id Its i is ;i g :g ;g : ; :£§ : ;g 'O 'O I 1 "OO > iO 1 1^ FouMds. 10, 000 10, 000 20. 000 20, (100 30, 000 30, 000 40, 000 40, 000 45. 000 45, 0(10 50, 000 5(1, 000 55, 000 5.5. 000 56, 000 57, OuO 58 000 10. 000 20, 000 10, OUO 20, 000 30,000 a iotoereecoooi- o.o Th'J'D-t-aoooojwcccofco gg -^ .tH W W « &■ a coeocoooooin(MOso--io— 'M rHtninOOOCOSOOt-i^t-TflfH CO CO m CQ PS 03 ** ■* (-1 r^M 696 ALTERNATE STRAINING, TENSION AND COMPEESSION. a ■§ *a -iJ,-i5 ■« fl 4J +j ^ flgpB-s gaa •2 -d -s •:: S - •!= - ^J ^A ^ ^ ^ aaa rs f f f f I r N I-* 00 «0 -t"M oc^ o o o o 00 O O O O lO ©o o o o o o o o oo o o ooooo .HOO oo OOM Oi o O CJ> o o " s «tt2S2925225255'^ooocioooooooooooooooooooooo «OOOQ=>caes==rr.r-,0O0O00 000 00 05SS000O000O=00 eiOOOOOOO lOO rS -^ (MW O "!*<•>*" "* 1 "^ "»H BM'sa'cfcooo-ofod' loooo" O r-i DD 00 tn 00 00 00 ■ OD 00 A, 94 64 PI CO R3 m CO iCOCO O otT 00 D3 ■ OOO "OOOOOOOO lO lOO^ > oocxToo" • oo cooo"od'od"cooo'"od' lOo" •aSoS'^ • QOOOCO • GO 00 00 06 oS OCS 00 00 lOO -ooooS • cQsioco I CO PS wj eo CO m CQ CO •« '£001300 ALTERNATE STRAINING, TENSION AND COMPRESSION. 697 1 1 .00592 .'666ii" .00627 .00644 .'66642" .66617" .00028 . 00053 — . 00671 ""— .ooesi" —.00698 — . 00709 ""—.'66746" ""— .'oisss" — . 01357 —.01304 O 'O -o . 01069 . 00062 .00093 S is :g i :i is MM' —.00502 "—.66538 " ""— .'6i352" — . 01290 — . 01197 i 11 _ toooo • 8II00 • 80000- EOOOO' soooo; Z9900 • O ;0 °. 00 g : • isass i i ; ; ; • i is 00 loo s is O |0 1 o s . 01082 .00150 .000*5 .00223 -.00177 +.00035 .00039 . 00038 .00044 — . 00036 — . 00038 — .f0037 -, 00039 o) 'oo 2 ■ w O |0 in o § .01620 . 01347 . 01387 .01432 . 01B55 .-01478 .01513 . 01552 . 01590 . 01634 .01598 . 01560 .01523 . 01484 i lllllll 0000 oooo~ooooooooo 00 = 0000 00 00 0000000 00 0300000000000000 sssssss ssssssssssssssssss ooo o c>oo OC X'X 00* oo yr. 00 0; CO Scq iHMCO hmwcowmS 698 ALTERNATE STRAINING, TENSION AND COMPRESSION. o M m Iz; m 1 M E-i 02 ?? t) © o '^l t> d 1 CM « <«1 w o M I— I W p o <-?8;s'^ •S .3 s>o io 1 1 '3 i •s 1 a o o 1 a Pi 1 § i 1 ■g : i : ^o i ; ; oo • • • 3 o H rf ; ; ;' s . : ; ; 1^'= : : ; 1 i : l' o o o c5 • ■ o i 1 s Pi 1 -1 i u a %M to \ i is ! I .o ; ; ;o 1 >?° ; ; ; . 00004 .00019 . 00036 . 00062 . 00068 .'60084"' 1 CO 1 i n p. 1 1 Oh 'i g u s CO •S i i i ^° : i i 1 ^ 1 : joo : ,d u n 1 n o 1 1 g o p Inch. 0. . 00002 .00011 . 00017 .00017 . 00016 1 Inch. 0. . 00002 .00013 . 00030 .00047 . 00063 ■CDQD • 1 Id Oh <1 Pcntnds. 1,000 5,000 10, 000 15, 000 20, 000 1, 000 5,000 10, 000 15, 000 20, OOO 20, 000 25, 000 26, 000 1 Pounds. 6,240 31, 230 62, 460 Q^ con c a u S "« Is 124, 920 124, 920 ,156,150 -156, 150 ALTERNATE STRAINING, TENSION AND COMPRESSION. 699 O O —i tH O O C O C oo o O O r-i rH -H O O O O O O O C5 o o ^ o o o o OJ O O coo o o o = 00 0000 c-i .-( in « ■* .-I tC ■w IQ « c^ o o o ^ I- -* iiP.- ■* O — 1-5 *>! M = 000 00000 000 000 000 000 10 CVl W t- -* (M O O => -J N O o =; o O O O 00 ^ o o 10 000^00 I' I ooo> r^ _i o oeo ^o>o 00 9 f i' f I' I I O CC O M 0» 1^ cc t-oo«D M eo 00000^ o =; o c o o o o 0^0 O o I r 1 1" f I O —4 e^ o o o 00 SIO 01 W ifS M "O M m^o o o o o ^00000—" oeo^oooooooooo ^lOOOiOOOOOOOO^ oooioooooaoooo 0000000000000 OC t- O O CO -H cc en -^ -n to !Z> W O O O o o 000 =.00 000000 CC -+ -^f -f » ^0 = 00 00000 00000 iftOO)— '«DO»-^f> mojo-H>-i-^?*iN OOi^-J-^— ' — -j eooooooo 00000000 CT in 10 m wo « ^ C^l l> tH -.Ji 00 O O r-l W 000000 000000 oot- «D -* eo O O O O -H = 000 00000 I I ooooooooooooooooooooooooooeoooooooooooooooooooooo oooo^oooooooooooooooo=>oooooooooooooo:::oooooooooooo oooooooooos „„„_„„„, _ 30000000^0<000000000000000000 oooosoo^ = olC-- — OO^nor400"l*I:-t0^100-f■OOOC•lCO■^J•^-CD■^lCX3TrO p3P3eo(0«cos«i(Ooor-(coooo(0«ooo)ciaooocQOooo^mcooccoseoioo-*csc':a)io:' " ■'- -■ -- ■- 5XO"*Ol:l:oo^^ e^t-t-oooo-^t-oo-^w t--« 03 00 1- cft ■* t- m *csioo-*io«b(ot-o . ^riiHe<1C4^i-tC4 i .e : ; ; : i 2 . : ; ; ; ; 1^=' : ; : : ; • I -o • I ; : : i° ; : i : i i ■ • : : i d : ; : ; : 1 1 |0 • ; ; J I ; ; ; ; ; 1 1 CD 1 3 g to Inch. 0. . 00028 . 00004 . 00005 . 00005 .00005 .'66655" . 00005 .00004 . 00005 .00004 ' 3 5 I I 1 I I CO r- M(t- IM > > ; ; . eg t- rH «o •S i ; i ; iiiiii i i i i iiiili •?=!;;:: \\\\\ to tn 1 ?'=^ ; i i i ; • . . > 1 • f • ; • • ■ -• 3 o ^ MM ; : ; ! i ■ : is : : i : i ;;:;:;;;§: i i • : 1 U P. § a o 1 m s Inch. 0. .00004 . 00004 . 00006 . 00006 . 00005 . 00052 . 00005 . 00005 . 00006 .00007 '3 1 Inch. 0. . 00004 . 00008 . 00014 . 00020 .00025 . 00030 . 00035 . 00040 . 00046 . 00053 1 1° <» a . 00000000000000000000 ,S 00000000000000000000 ^ 00000000000000, 000000 s ° " N « ■* in r.1 w m .»' irrco't> 00 oTo r.t n eo'-^io' ■3 1 Pounds. 17, 100 34, 20U 61, 300 68, 400 85, 500 IT inn 00000000000000 ALTERNATE STKAINING, TENSION AND COMPKESSION. 701 90000; 1 • t ! e^ 1 • 1 1 ! '. 1 1 ■ ! . 1 ' t ' n • ■ ! ■ ; ; ; ;o 1 ; i I ; ; ; 1 ; ; 1 ; 1 ; ;© 1 ; ; ; .00005 .00005 .00005 . 00005 . 00006 . 00065 .00004 .00005 .00035 . 00005 . 00005 .00007 .00005 . 00025 .00030 .00035 .00040 .00046 . OOOOI . 00005 . 00010 . 00045 . 00050 . 00060 .00067 .00072 ■ :: i ■■■::■ ;i •!:•:: i i •: i il ! • ■ ! 1 I ! I 1 • im ! ! • 1 ■ 1 i * i ■.'.'>'■'*■>... i ■•■> t .0 .00050 . 00006 .00006 .00010 .00005 . 00007 .'666'73"' .00006 .00018 .00027 . 00004 .00010 . 00015 . 00025 . 0001)2 . 00057 . 00064 .'66661" . 00007 . 00025 . 00052 ggggggggggggggggggggggggg OOOOOOOC^OOOOOOOOOOOOOOQOO 102, 600 119, 700 136,800 153, 900 171. 000 17,100 34, 200 51,300 85, 500 171, 000 188, 100 205, 200 17, 100 34, 200 85, 500 171,000 188, 100 205, 200 222,300 239,400 236, 600 17,100 34, 200 85, 600 171, 000 702 ALTERNATE STEAINING, TENSION AND COMPRESSION. -a s a p o o CO oo o T3 la (S d o o cS a o o c8 a O 9 DO O Pi ;-! to >- go a ^ S so ri 00 a ^=; d : 10 i § • ! 1 in • > • i : ii i i i , . .0 ■ ■ J u a 1 a 6 L •lis i 000 1 .000200 . 000050 . 000050 —.(100125 . 000060 . 000075 — . 000075 — . 000050 i 1. i 10 IfS ■ iiii ; . 000100 .0110150 . 000200 . 000075 .000125 . 000200 . 000125 . 000075 g a .a 1 1 g a '3 1 ^ ^d 0' ■ d '0 a (S 1 12| ■s ii Ho PI ! ! • ! tciiAin ; ; ; J^gg • • ■ ' 00 ii i ; ■ 'f 3 •s ii ii g§ . . . . ,fi ; ; ; ;g22S . ■ . .000 i n •0 1 FN dj 000000000000000000 r>s 000000000 ::OOOOOOOOi ^ 00000000=000000000 3 ^ wo'w'o'o'o o'oo'iA'o'ous'o'io'iao"!^' t H 3! 'L-0 1 '(C If '1 -0( c c oc IM 171, UOU 256, 500 171,000 85, 500 85, 500 171, 000 85, 500 ALTERNATE STRAINING, TENSION AND COMPRESSION. 703 • 1 1 a t2 i a a 1 S •?<= ; 'O 1 1 1 1 • (O > I > ; • • 1 1 • 1 J ■ I 1 s ■ • :g ; ; • ■ ; i ;i i ; i ; ; 1 : ■ : ; ; 1 ' "• o (D g 1 i o 9 > S (5= . 00073 . 00025 . 000 i5 — 00U23 — . 00023 0. . 00023 .00023 . 00005 .00012 .00013 — . 0002+ — . 00023 — . 00024 ... iijiiil Is o H ^6 . 00023 .00. (-18 . 00073 .00037 . 00O27 . 00050 . 00073 . 00078 . 00090 . 00103 . 00U79 . 00056 . 00032 . 00007+ .00012+ .0li((l7 . 00022 . 00027 . 00032 . 0U030 1 1 i p I 1 1 § a 1 s 03 !=■ 1 i 3 o H (So g ; i ; f i i 1 f a o 1 « oo ■ >5= ■ ■ ; t- ft5 ift WO -* «o t- 'J3 m 1MOOOO = 00 = OM OOOOO 000000 f 3 o lOO ■ •§ 11 ; ift'Mlr-WQOTftOO-H.-Hr-^ 00000000000 (=0 = = 0000000 00000000000 l"+ 1 J- oooooooooooooooooooooooooooooooooo *5 00 = 00 = 00 =000 = 0000000000000 = 0000000 'tt 00 00 00 000000 00=0 000 00 00 00=0 00 |oiO©"ido'o"g»oioo'in«wo"ir:"o"irs"r-r(NeifT^^ ^( 1 1 ^ i i- o c 001- OOOOOOOOC 00=00000= inoto =oira;pxo f^ ■s sill '& "s iHrHr- 9 'it 1 r- f oc 00 "gs 1-1 rH 704 ALTEENATE STEAINING, TENSION AND COMPKESSION. a a a o O o CO o lO 6 M so 1 p, I a .9 1 1 1 i i P4 t 1 3 ; is : • ; O • II i| OO lO ■ l'= j ■ •i ; :| i ; : ■s i ii ; ; ; ^ ; ; • ii ! o ■ o ■ g 1 ggg ;g O O O '^ o i 1 1 1 1 Inch. .00005 .00008 . 00005 .OOOOS . 00003 . 00005 . OOOOS . 00005 . 00011 . 00012 . 00002 0. .66149" ■3 1 i< oe ^ o o S o o 9 o o o o >o 4 ; ' 5 (S S 1 t3 a i 1 1 1 So op § ■d i i i i i i ^ : : i i i ; • o • ■3 1 -§ i i i i i i 1^ ; i i i i ; il' i .a p< t g ■1 1 ^iiiiii ;o > 1 ^^ : : : : : : |0 » OD 1 ojooooooooooooooo -eoogoooooooooooo S {xToTo rH cSci^ »rf o'oo o'o'o'o'o'' 3 5 B^OOOOOOOOOOOOOOO ill *< 1 u 1 I -usouso 'la ■i i iiiii ii <~t^ ....... . o > 1 lO US o o ■ o 1 : :liii ii Mo- ;:■■■•; • i 1 a I s 1 1 a 1 u o ^J M o H ! t 1 ! lus • ■g ; 1 i i ii i ^e o . '-'cJ Jo I : : ; f I a p. a o 'S u 1 1 i' en gg ; ; ; ;S3 i y^Nirl 1 gg ; ; i is ; 1 i 1 i 3 s Founds. 85,500 171, 000 85, 500 171, 000 250, 500 342, 000 171, 000 312, 000 H. Ex. 165 45 706 AI.TEKNATE STRAINING, TENSION AND COMPRESSION. CO o lO • © izi 1 b cS 'C D a a< 3 O to 1^ >o a o ^i5 II rv o IS 05 -C ^ tH s X © o 6 To d i^i " n o rfi n 4^ .a a P' be P" •' s ^^ b4 ^r,-^ o 5^ .2| 0) Oi^oQ OQCi 1 ■| P< i V 1 i a i ■§ OS 1 i B ^° ?^S^'S5^ : : : : O 3 r; = o => • ■ • • <^ C3 ^ O = 3> 1 I • • oo :::. OOO ■ • ■ ■ lo -J to w t- eo I rrio in W to t- . O O c o oo • oooooo I 1 to a 1 a t3 o a I a) += g a aj o in M 00 S 1 i e o a i n .2 ac p o 03 . 00070 . O0IJ0.5 . 00006 . 00011.5 " . 00006 to J ;o 1 o B iS^ ioSsg iggSSgg Ii :g 1 O g 1 iiiiiiiiiiiiiiiiiiiiioi§ii|i| S = -H IN m ^"o -1 c-i CO *-u3-in «5"i>od'o) o-.ri !d"i>-oo oTo" o" r-rcM-m'^-ouf B 1 s o ?. LA CO 55 3 CO to 3 o g S i 00 o o =1 00 o --fc oooooo -.o X M =i 4 S -"t^icT-M'o'oo g oooo "^5■o•»^.<5 OO ■^og ALTERNATE STRAINING, TENSION AND COMPRESSION. 707 — o o o o o o =• o o o o o o oo o o ea c- 'Mr— in o I- t- X 00 O) o O t: O O O •H ^ o o o o o o o o o o o in lO m tf lO oo oo o oo o oo o s c s o o o o o o = 000 00000 c o o o o pi in 10 in lO CD CI o o o o o .-f o = o o o O O O O ^3 O 000000 o o a o 00 00000000000000000 OC300<3000<000000000 00000 000000000000 w"r^oo oTo'in ©"t^aoo'o 10 «J"t>oDar cT 00000000000000000 in 94 o-oD iAnocooo3^t-ine>iocctn oci*4iiat>ooco>i-Hcmooooc4^if3t- M 1-1 1-H-i ri Ca W M « CO CO i-f il i-lfH iH I « a o C8 IS be n as o a. =2 a a* § a: a t> CD tj 1) m a bi =? ft a t< rt 'e n a y rt aj ft «3 ■^ P n u ai fl ajT3 G PI !2 TS •2 n a; be fTf S a ?d i : i ii i ; • ■ -i i f ; i ; i i f .9 1 a 1 1 ID 1 •g i i i "^"i i i . 000325 . 000050 .000325 .000050 13 H ■s i i i 001000- osoooo - OOTOOO • osoooo- 1 "ft <1 ll oi 000000000000 1 g§§§§SgS§g§i ■3 H « 000000000000 1^ 000000000000 ^ 00!DTjiCMa)OOC«;.»-MGOW i5 °°ass 708 ALTEKNATE STRAINING, TENSION AND COMPEESSION. •luvyp CO o >o 6 09 i P5 '3 (-H i 1 u Li o p. 1 1 h ■i a i 1 p4 S o O 1 3 g 1 H ^= i o O (g .00023 . 00004 . 00005 . 00003 . 00005 iiii ■i I tA . 00003 . 00007 . V. 012 .00015 .OOOJO O O =1 O oooo 1 a 1 § (6 •5° ; i I >?= i o o o .° ft a o iS bC CI o W i d «2 Inch. 0. . 00005 . oooo* .00 04 . 00003 . 00004 . 00039 . 0001)4 . 00005 . OuOOS . 00007 -i o H Inch. 0. . 00006 .00000 .00013 .0(1016 . 00020 . 00019 . ooo-.»;t . 00028 . 00045 i p. II Pounds. 1,000 2, 000 3, 000 4,000 5,000 1,000 2, 000 3,000 4, 000 5,100 5,000 0,000 7,000 8, 000 9,000 10, 000 6,000 7,000 8,000 10, 000 1 .000 CI ; ; • ; il 1 1 ; 1 O • ! 1 ! ! IcQ ; i j j i . 00117 . 00005 . 00004 . 00005 . 00005 . 00005 liiliiiiiii iiiiiiiiiiiiiii ill ■= i i 1 f 1 f f f f f r r i' r i'^ \'\' \' . 00040 . 00045 . 00049 . OOOM . 00059 . 00064 -.00010 -.00005 0. . 00007 .00020 . 00030 . 00055 . 00003 . 00067 . 00077 .00087 . 00087 .00083 . 00078 .00074 . 00073 . 00070 . 00067 . 00062 . 00055 . 00052 . 00047 . 00042 .00010 . 00036 . 00031 .00025 . 00025 .00021 . 00016 . 00013 ; i : ; ;i [ ; |0 i i i : 1 ■ '•' ' I : 1 ® . 1 .!> .00069', . 00006, . 00006' . 00006 . 00007 .00007 .00142 . 00007 . 00007 . 00008 .00008 .00011 .00045 .00051 .0U057 .00063 . 001)70 .00077 .00078 . 00085 . 00092 . 00100 .00108 . 00119 ooooooooooooooooooooooooooooooooooooo^ooooooooooo oooo — ooooo^ooocs 0^0000000000^00000000000000030003^ o ~oooo9 wOoooooooeooooooooooooooooooooooooooooooo^ o'^w'^r^tfTcT^^rea'T^ifs'ift to t-00 Oi"o"^~ oocoT(i?iooootD'*rioocO!0-^riOToeD«oo-*t«oooocOTftwoe33!;(Dogow'*»«oN5jDXoN Cei'*0DQ0OpOl>00-A"33 ..-OOi-HT^WmiJ^ :v|^OtOOOT-l!MtMMn ^Jl-'000100QOt-(O^D"0^ rUCOiMWrHO o^^"l*^'Qt^(o'o i^^-^jT-^iO !D«r rc"o [>^'*^i?rTfroo"N«rotD'co t-e-COO! OaOt-t-OOOJ esOOi-*MPlMrJt rMCflTdOt-Oi-iMWOT-^eOSflCfli-^OOWO ^ ^ „ ^ r-t rH rl r-i tH rH iH iH iH rH ^ iH iH iH n 710 ALTERNATE STRAINING, TENSION AND COMPRESSION. a a a o O I CO CO © d a (1 s f ■s 1 s O 1 .s 1 i '3 5 1 com Til CD '• 1 1 ' I 1 ! ! ! ! • • ' 1 ! ocoo|j||||||;|;;j;; ilil : i OOOO I • 1 IN I I |8 -.00007 -. 00002 +. 00002 . 00U08 1 g u 9 CO M 3^1 CO I I ' I ' ■ I ■ I ■ I * ■ ' • Sggg ;;;:::;;;;;;;;; oooojiijiiiiiiiiiii iiii : : OOOO 1 ' 1 o H 2:?gg ;■;::;:■::::::: iigg i ; i ; i i i ; : ; : i ; i ; -.00024 +.00011 . 00047 . 00085 n -a .1 p. 1 1 § a 1 i o a m ooo o OOOO ;;:;' oooojjjjjjiiiii ii O ; d ; ; ill 1 -.00008 -. 00003 +. 00002 . 00010 in intn • ■ • 1 ! ! ! 1 1 1 ! i ii i : ; ; ; i i • i i ; o oo in 1 O i o I i o . . >M00 1 1 loo I I '® ® ■§ .g ID P. 1 i 09 1 oo MO iiii .00119 . 00031 . 00033 .00036 .00010 . 00010 .00018 .00017 . 00020 -.00004 -.00004 -.00005 — .00005 — 00005 -.00027 -. 00030 -.00031 -. 00007 . 00030 .00028 .00030 -. 00026 -. 00028 -.00029 i i isg 3 1 OOOO owtHmcoco— 'oooo.*o>ftomoooot-©ooOTO(M-Htira NggWCO-WOt-OOC»OOCOI:-^.-(ClO«— riO-*r-.00 ^oooooooooooooooo>ooooooo OOOOOOOOOO ooo OOOOOOO OOOO i i 'Ms : : :°° 1 o CO so 1? gg§g§g§§§SSggggggg§§ggg§§ggg§ggggog§oo OOOO =5 => OOOO 0000 = 00 ooo ooooo = oSoogggggo •»S3g"'sSS'"SSSs;§3f3S;SSS5asS as" "'"■'S S S S 2 ■""" °"s¥'°' s 3 o H S SO ooc eoeoc irTo'a! o 5 "g OO 35, 340 70, 6b0 106, 020 141, 360 148, 428 166, 496 162, 661 169, 632 176, 700 169, 632 162, .'i64 155, 496 148, 428 141, ,360 106, 020 70 fian "S'S'g OCO ■lo- ss o CQ O ? to e 1 V 70, 680 106, 020 141, 360 35, 310 70,680 ALTERNATE STRAINING, TENSION AND COMPEESSION. 711 . 00001 .00007 .00001 .'66ni6'" . 00013 .00014 .00011 . 00017 . 00023 . 00009 . oooll . 00017 . dU . 00016 i§ ; ; ; ! i i i ; '1 : ; ; ; ; ;| ; i i ; iiiSgl ; OO . • . 1 1 t t 1 o ; • ; 1 > |0 • • • > -000 = • f f i : j : : i : : : ■ i : i : i : ' j ; j ; i 1 1 f i"+ : i : ; ; ; isisss i i; i ; i i j ■ : i i : i 1 f f f+ i i i ; : : i i ooocoo = oc,ooo— booooo • ■ '• '• ■So?' =000000 ■ I ■ ■ -So^oo ■ • Iwooco «Boo = ooo = a=:L==:oooooo c^'OOo = = = oos 1 . • . -oooo^ ' ■ 'OOOOO ooooo 0000-0000 COOO • ■ • < 'OOOOOOOOOO OOOOO ' • OOOOO f f f f f+ ■ ■ f f f ; i i i : i : i i i • j • iftOlOi-lOtOift COO OOeOOt-OC.3COlfl(NO> > t . '. ^OOCMaOCaMMO oeoi.3:oo>-«5Mor-ioeo^iint-0)r-io-,M ■ . . . w-HTitaocMroTr 0000 ooooooooooooo 00 I 1 t I -ooooooo i : : : i r+ ■ ■ ■ ■ is S : ; ; : isssss i : 'esB-s rH • ■ • • iC<^0 = r-l t • -^- — •HN'M §:•;:: 'ggigg : ; iggsSS ■ : : i : : f+ ■ ■ ■ i ; i .00006 . 00006 .OOillS . 00030 .00008 .00010 .00015 .OOO-'O .00035 .00005 ' .01007 .00010 -.OCOOl +. 001.05 .00015 .00030 . OO06O -. 00020 +. 00005 . 00025 .00060 ""lI.'6o662" +.011)05 .000)5 •t ...I.!;iII..J||OOOoO|;;;|-ooo|;;;; <^>_'— >t^ -''^ooooooo ooooooooooooeooooo OOOOOOOOOOOOOOOOOOOOpS'"^- — -' — — >'^~'~» 00 00 o ooe 0000000; 0050000S , _ _ _ _ _ _ . _ lOcTo'-H'-.'iM'-^aJirf'o'iri" oufiso ira'o"in o"in"iri"o lo o'o'ufo "ft o io"!0 [~ x"o o irJo irio i/f tfl o'lrTo'in ftNMNM WW WiHt-4 rH i-l cm iH rl ■ rH r-l CM « i-l i-l CM 5M CM ff^I (M (M CO i-l i-l CM CM i-l iH N ffJ »ooooooooooooooooooo= 3000000000000 =000000 = soo= . =000 = 00 = = 0=0 = 0- i =000=0 s' iri" o" -H im' yf T*r • eootoco-^ffjooooo: ■«*ooeDriopo o'Jrjoo-*- •^ o ,->o o -i r ; m 1— CO -.^ o ■ '■MOOO=0000000000000«0-*N , ._il C-rC0TgO = -*00'MtDO-*JC7'J-HOt C— < ; x; l- X 55 O O rc » = ?3 t- CO O = CO l- K O = O — .-« M M iif:o = — O'ftoo— mico'awmscco „_ _-- HC0C-O"*t-C0t-O-?J'l-ff0l.-C^ — WMiK ^f-^ rH l-l t-( rH tH iH CM e^ i-l r-( iH i-l rl i-l i-« « CM CM CM Cfl 712 ALTERNATE STRAINING, TENSION AND COMPRESSION. 13 v a a n © CO 00 o CO 'i 1 1 a \ 1 1 '(D 9 CO ■si i ^ i i .ooros . 00015 .00018 . 00020 . 00023 \\ a i : i i 1 1 i i j 3 o H ^ i i ■^ i i .06678" -. 00030 .00015 +.00003 . 00023 .00046 1 i : i i 1 : i i i u .a 1 OD £ a o •i g u a CA Inch. .00025 -. 00022 -.00022 -.00024 -.00023 -.00027 -.00025 .'66064" . 00040 . 00042 .00042 .00044 .00048 .00061 . 00020 .00021 . 00029 . 00037 . 00038 -.00019 -. 00022 -.O00';4 -. 00024 -.00025 -.0OJ26 -.00029 1 .MC^O)-^^^ — i-H ' t • ■ 1 • I • -OOO — ^-HPJTMCMC'SCC-^COCOCCCtNCM'^ ■ i < 1 rf^OOOOOOO 1 ■ I t ■ I • • • c 00 • ■ • • «oQooooo 1 ■;;;•; ; ;«oooooooooooooooo .=>o ; ; ; ; ^ : i : i : i : i i 1+ j : : : 09 I 00 1 ID 1 •s i •^ ! ; . 00010 . 00015 .00021 .00035 ."66656" meOOOC:00 oeoooso -^o OOOOS — — JM eooooooo O0000090O0S00O00O000 0000«93 =00000^0<=;OOOOC3 ^OOOOOOOOOOOOOO^OOOO OOOOOOOOrHCOOOOOOOO I I I I I M I I M COtOi-»00>0'MrHrr5aD«Mt-CO — C» => = oo oo I I I I iH « Cl TO M •H oo oo oo o o o oo oo o ■ f f- f r t-u5ifti>-r.Tr*-oo^ L— m i-» o lO el ^: M CO ooo — — oooo OOOOOC3C300 ooooooooo I I I I omoMOswoccooi (OOWClMO'MtOOO COracji-HOooo^a COOOOOOOO ooooooooo I f i \+ ' I I f OOOOOOOOOOOOAOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO ^o^o^oooo^oooe^o^ooc?^oo^^o^^oo^oooo^eooo^<=>0(3 ~ o sooooo O000OO0O00OOOOOOOOO0OOOe0OOOOO0OC=)OO0O0 =00000 OoiOOOOOO 30 O 3 TICC e o CO ooooc M W O Off I o o I o -r u- o ODca CO tnc az L-~tr-00 C soooo 3 ■>! 00 -V O 5 I> CQ O 1- 3i-'eoffjc-OTa>oecooc« ooooooooooooooooo :; oooxo-^wooooo O C>. ^ T^ OO'M OOO-MOO-^-i-OO^IfO - ■^30?ltON05«OCOO«^'^^00■* crscoct3Mesccct-n:oo««oorcL~o«t-o>—-^ffJO'*oi~fco f-^o'io»ri'o"o'i-^'^>-^o"o in irt'o' to ■~''o"c^"r-''frr«rin"ej cT o'm'co ' -c^w" iH rt r-( iH rH r-l H r-l rH (N W N CO CO CO CO CO '* W N P* M 714 ALTEENATE STRAINING, TENSION AND COMPEESSION. a; o P ■ ,-H a o OO CO o CD 1 1 i F-i 4 a i P< 1 1 g a 05 1 I It- I ■ :S : |0 ; .00008 .00013 .00(117 .00020 .00.1-24 . 011026 . 001133 . 00042 . 00037 m o o •3 1 1? ;o • .00.325 . 00338 .011355 .00375 .00399 .004-25 . 00458 . 011500 . 00537 o i o o ki Ph .2 i o > CO s o a m Inch. -. OJ025 — . 00023 _. 0U027 -.00030 -.Ou031 c»oir)too,-,oo.ra?^«"MM^^T(.oot-— .-'(M-^if,.itit5 OOiiOOOOOOSOOOO = OOOOO0OOC3OO f f r r r f r r r r+ ■ ■ " ■ I Inch. . (J0800 .00777 . 00760 . 00720 .00689 . 00354 .00394 . 00439 . 00486 . 00535 . 00586 . 00li44 . 0O7O9 . 00791 . 00914 . 0ll>'93 . 00870 . 01 '847 . 008J3 .00799 .00775 . 00747 . 00720 . 0IIU89 . 0(1678 .0(1700 .007-24 .00748 .00772 . 00797 1 1 5 i B. 1 1 i 1 P4 6 s CD 1 . 00021 . 00031 . 00056 . 00084 .ooiii"' 1 1 t^ m 11^ -«i ■ ■ • ■ CO • ■ • • • OOOO'-i'O 1 1 1 f i ; I : f i i i : ; .s o 1 § 6 > 1 . 000.14 .00058 . 00085 .00120 .00177 -. 00028 —.0110-29 -.00031 •a 1 1 -.00605 -. 00547 -.00462 -.00342 — 00166 -.00103 _. 0U222 -. 011-254 -.00285 o i a §■1 pounit. 25, 000 20, 000 16, 000 10, 000 5,000 5,000 10, 000 15. Olio 20 000 25, 000 20, (100 16, 000 10, OUO 5, 000 5, oon 10, 000 15, 000 20, 000 26, 000 30, OCO 35, 000 40, OUO 4.5, 000 60 (100 4.5, 001) 4(1, 000 35, (lllO 30, 000 25, 000 20, 000 ' 15, 000 10, 000 5,000 5. 000- 10, 000 16, 1100 20 0"0 25, 000 30, 000 .1^ 'in c 000000(S tD — ' to — ' to o .r o ■* t- .* o t- a 35, 340 70, I1.-0 106, 0-0 141.360 170, 7110 i '4 a 2 3? 2 JMWCOOSC oc !M 'X OCT 3 FJ T-ll- 5 c 'if 3« SOO O OO l-CO^iSO^ o o .'-: L— o ALTERNATE STRAINING, TENSION AND COMPRESSION; 715 00 • < ; ; • ; i i : : ; ; ; ;i ; ; 1 :■; i i ; i i ; ; ! ; i i t •<••'•>•• 1 ! 1 00 ! ! 2 i i ! ! ! i ! i ! ! : ' ' o ' 1 1 j • i i ^ 1 ^ i : 1 o • ■ 1 ■ • • • < I • • > > ooooo oooeooooooooo oooooooo oooo 1 1 ! ! ! 1 I • 1 1 ! ! ! ' ' ' ' i i \ \ \ \ \ \ \' i+ f r f r r f r r ; : i : ; ; i : ; ; : i : .00065 . 00041 .00045 .00824 .00850 . OOBHO .00925 . 00905 . 00883 . 00860 .00836 .00812 .00787 . 00760 .00733 . 00703 . 00692 .00715 .00740 . 00763 .00788 .00813 . 00840 . 00867 .00805 . 00873 . 00850 .00828 .00805 . 007S0 . 00755 . 00730 . 00700 .00395 . 00436 . 00481 ..00019 . 00027 .00053 • .00074 .'66m"" > • lO > 1 ■ I '• '. 'O '• '< '• '• O M O CD ■ I I < M I I I I m CI t^- 35 ' ■ ■ r- ■ ' ■ • fill : i : ig i : : i f f f i' i : : : f : : : : ! 1 io ! 1 ! ■ . . . o . < I • i ; i r : i i i WCOCDt*- ^■TMO00-*lMI>—t01Cr3ai00-^lN I ! 1 I r-.r)-xo(D(MfCMroofarm'"x'w"t^M'o^'to o'lrTino'cD — "to w'l— 'w lx'c^ft■-^(^f■i^— o oirTio o'co -^cd".--"ooia in"o'!fi— 'o — o'o idio'otc.-r ^goT-Jln.--ao^f-HI^>*ob-meot>o■*l>^H■^*c»I--'oo•*^l^■■*©^-.eomL•-OTd(I>'^J(ot>^Qco^-o■*t-Tt^ot^•OT fli-tili-t i-(»Hi-i«e5cgm(MN(MT-(.Hf-l rHrHiHiHiH i-tiHiHi-liH rHrH C4 94 03 CQ CO 74 ? 716 ALTERNATE STEAININGj TENSION AND COMPEESSION. a o O I 00 o la d i > 1 1 p. B o u 1 .9 ft (D n 1 1 i o o . 00009 . OOOH .00016 . 00018 . 00021 . 00023 . 00028 .00032 .00044 i ^ W ^ o . 00553 . 00564 . 00580 . 00598 . 00G19 . 00642 . 00670 . 00702 . 00746 4 -9 i p< n p. 1 CD § eg ooioommoo — ciT^ — r^'Mrc-*-^*'-^ot-oco >? i 1 1 1 f 1 1 1 1 f .00071 .00040 . 00043 .00045 . 00047 .00048 . 00052 .00068 . 00068 o H . 00577 . 00627 . 00682 . 0U742 . 00817 .00912 . OOO.iO .00980 .01023 .01103 .01183 .01170' .01148 .01125 . OllOl .01077 .01051 . 01025 . 00998 . 00968 . 00935 . 00582 . 00622 . 00005 .00710 .00757 . 00805 .00857 .00915 . 00983 i 1 1 S P 1 IS ft « § n u Sioli gggg : g ; 5 o H 1? OtJ100(D 1 t' ^^ 1^ oo . oc Qor-u I o o o o . 1 1 f f i o • f i 1 § « to 1 1 1 1 . 00088 . 00059 . 00093 .001/5 .0(1177 -.00027 -. 00030 -. 00,030 — . 00031 3 o H -. 00847 -.00788 -.00695 -.00570 -. 00303 -.00420 -. 00450 -. 00480 -. 00611 1 i 1 S If »§g§gSg§ggSgg§§§gg=g§gg§§§gg§gggS=°§g§gg ft ft t o H 1 c "i o cr 9 0" i ir CO ••£ 'tl 0- o c O L- CO(M 1 c c3 1 c o "1 CiO S3 1 i f CQt- oc^ OTl OOC O 'VOC l-O c DICO ALTERNATE STKAlNING, TENSION AND COMPKESSION. 717 O O d^ asm sag a a a F4 h (. (t) (D S t-t- ! t ! 1 1 • ! ■ • • • gs : I ; : ; 1 : ! : ; ; gSsSgs'UaSSS ;; 1 ;;;::;:::; ; OOOOOOOOOOO -111. OOOOOOOOOOO • J 1 J J - 1 . 1 . ■ J 1 . no • ! • • • 1 • > 1 1 1 g o . 00824 . 00835 .00849 . 00865 . 00885 . 00905 . 00930 .00960 . 0099S . 01041 " .01104 ■ .00085 .00117 .00037 . 00036 . 00079 . 00072 .00015 -.00010 _. 00022 -. 00023 -. 00024 -.OOll.'l . -.000J6 -.00020 -. 01,027 -.00030 -. 00030 — . 00035 . 00067 . 00039 .00012 . 00044 .00048 . 00045 . 00050 . 00053 . 00002 .00070 . 00095 .00125 .0.1010 .00010 . 00007 —.00012 +.00015 — . 00013 +. 00015 — 00013 — . 00021 .OOOil —.00021 — . 00023 +. 00023 !3Sg£ gggfe 025 070 120 173 •235 305 400 525 535 545 552 540 S55 542 557 544 523 544 523 500 523 oooooooooooooooooo ooooooo oooo OOOOOOO OOO .00029 . 00040 . 00058 . 00107 i§ -. 01175 -.01135 -.01077 — . 00970 !?. o o f .00096 . 00067 . 00089 ' .00144 .00187 — . 00027 — . 00029 — . 00030 ^. 00034 o f in o 5 f — . 001I98 — . 00852 — . 00665 — .00692 —.00721 — . 00751 a 1 1 OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO^OOOOOOOOOOOOOOOOOOO O0OO^0OOOOOOOOOOOOO0OO0OO0O0C30OOO0OOOO000OOO=OOOOOO0 OOO oo o o o o o o o o o o o o o o o o o o o O o o o o o oo o o o o o c?o o oo c — 3000000000 OOOOO^CilOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO O'^'Ot-'V.-<00'0-*C-TH^COpH.ncOM OOOOOOOOOO .^(oo-^oo-vooocoe t'OC-Ot>-iuomr-tmrHm 03*4*co^o3nncpcOI—C0T-'(NCSl . in -^ ^f 'T tr rt PT .~: r: ,~; c-: co « c: r- co 7 1 cm (M ^ I i i i I i i i 1 1 1 ; : ; : i ; ; i i rf£ : : : : I I I ! : : : I : ; ; ; ; ! : 1 1 ; ! ; ! I ; i i I i ; ; i i M I i ^ ;;;;:;;; i :;;:;::; i ; U ■••■'>■■•••■■••• I • I ^ ; i ; i :; i ;.: i ;;;;:;:• i rc^ • • > • ! I ! I I ! ! ! ! I ! I i • i U ■ I I I I t »?;:;;;■;::;;:;;;•:;; ft, : (^ -i o Ti SPECIMENS TAKEN FROM STEM OF OVERSTRAINED STEEL EYEBAR. Interval between test of eyebar and test of the specimens, 3 years 3 months. Original elastic limit 34,390 pounds per square inch. Maximum stress applied 54,350 pounds per square inch, which stretched the metal 5. 5 per cent. Odd numbers were finished and tested without annealing. Even numbers were anneal d. The annealing was done by heating cherry red and cooling between pine boards. 719 ^M 03- .a 5 10 cc irt'ifi co~o §•43 3 u " ea (N -tji (N iH CI3 fl s 9 !!!!!! > ! 1 1 • I * CM 'd : : : : : « * i li^iM ffl « ;a ; : ; fiO „, e^ S ie ! ; i" eo CD irt ifl »rt = -sfl -* M CO CO CO •s aasasa <( ■ pqppQH a" • *SOOOlftOO §).gs ^ ca M «j c-" CO tritima atrengt per aqua inch. Elastic limit per square inch. g s 1? ■V ^ ■^ to lO 10 US g " ?> •s 6 B'i a ^ ..... . t) I'd ird : ■ § fl » P ® P « p^ gla Pl3 ^ P43 a^ p p c p : a !zi<]^i<]!z]* c^ 00 <-l « lO to C- CO O) c CO CO CO CO CO -^ IM W (M ffl W ff 5S M SI l>3 Id d O ft a o o a o o INITIAL STRAINS IN STEEL 8-mGH AJSTD 12-INOH B. L. RIFLES. Slices from 8-inch jacket and tabe forgings. Also slice from 12-inch hoop, Ai. 733 8 Tno^J^.Z. .Jf:z/^le iJte^. (yZ^^-C^&^/irorrv o^f€>?33^. tT^Zjsa^^ Ze^v^r^^ /-^^ 2059) 2989) 2990 5 2991! 2992 5 Specimens cast from same oraoible of metal j those marked F. were oast vrith sUioa or Al. flux j those marked O. oast without flux. Pig of remelted Dyer projectiles Pig of remelted 8 and9 inch Bntlerprojectiles. 2993 2994 2995 2996 2999 3000 3001 3002 2997 2998 3203 3204 3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215 3216 3217 3216 3219 3220 3221 3222 3223 3221 3225 3226 3227 3228 3239 3230 3231 4301 4302 4303 1304 1305 1306 4307 4308 4309 1310 4311 4312 1313 1314 4315 4316 4317 4318 4319 1320 4321 4322 4323 4321 1325 432G VErom same orooible . E^m same oraoible . 8:^ I;' p.' F.l O. 0.. S.0.8",C.S. S.C.8",C.S2 8",C.Sj.. , 8"C.S.j 8",C.S, H • C.S.JS C.S.ig , C.S.M , S.C.W.LCig S.C.W.I.CiS S.C.S.W.I.C.J8. S.C.S.W.I.CiS. C.S.Jg , C.S.J8 ■i^W.1.20 V W.I. 20 sc.v^ s-cy. S.O.H S. C. }i S.C.H s.c.g S.C.II S.C.5J S.C.Ji S.C.JJ s.o.v S.O.-V s.o.« S.C.1I S.O.Jf s.a» S.C.JS a-C.U s.o.^..... S.C.J •-, S.C.^i S-CsV I.'6;a.:: S.C.ii. S.C|. S.CJ. A — - A—. src.i S.C.I A — A A S.C.A- S.C.A. Diam- eter. Inches. .605 .605 .506 1.129 1.129 Sectional area. iSq. inch. .20 .20 .20 1.00 1.00, Top of pig. Bottom of pig. 1.129 1.129 1.129 1.129 1.129 1.129 1.129 1.129 1.129 1.129 1.129 1.129 1.129 1.129 1.129 1.129 1.129 1.129 1.129 1.129 1.129 1.129 1.129 1.129 1.129 1.129 1.129 1.129 1.129 1.129 1.129 1.129 1.05 1.129 1.129 1.129 1.129 1.129 1.129 1.129 1.129 1. 129 1.129 1.129 1.129 1.129 1.129 1.129 1.129 1.129 1.120 1.129 1.129 1.129 1.129 1.129 1.129 1.129 1.129 1.129 1.129 1.129 1.129 1.129 1.129 1.129 1.129 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1,00 1.00 1.00 1.00 l.OO 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 .86 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 l.OO 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Tensile strength. Total. Potmds. 7,010 7,020 6,989 16,980 26, 670 27, 480 25, 170 27, 820 25, 410 21, (180 23, 040 29, 600 29, 060 29, 050 28, 980 16, 310 27, 620 18, 980 26, 190 25, 810 26, 800 28, 650 31,170 31, 090 30, 950 31,600 30, 600 29, 450 30, 680 30, 990 31, 400 31, 180 28, 980 • 30, 010 29, 820 29, 700 30, 200 30, 410 30, 180 26, 610 29, 040 29, 850 28, 630 28, 160 30, 650 30, 080 31, 620 31,280 30, 880 30, 140 30, 030 29, 980 26, 800 29, 180 30, 690 30, 660 29, 890 29, 110 29, 340 29, 090 28, 670 28, 030 29, 480 29, 400 30, 210 30, 170 29, 120 27, 980 25, 800 25, 920 26, 240 26, 980 22, 270 22, 790 Per square inch. Pounds. 36, 050 35, 100 31, 900 16, 980 26, 670 27, 480 25, 170 27, 820 26,110 24,080 23, 010 29, 600 29, oeo 29, 050 28, 980 16, 310 27, 620 18, 980 26, 190 25, 810 26, 800 28, 550 31, 170 31, 090 30, 950 31, 600 30, 600 29, 450 30, 580 30, 990 31,100 31, 180 28, 980 30,010 29, 820 29, 700 30, 200 30, 110 30, 180 30, 910 29, 040 29, 650 28, 630 28, 460 30, 650 30, 080 31, 620 31, 280 30, 880 30, 140 30, 030 29, 980 26, 800 29, 180 30, 690 30, «60 29,890 29, 410 29, 340 29, 090 28, 570 28, 030 29, 480 29, 400 30, 210 80, 17U 29, 120 27, 980 25, 800 26, 920 25, 240 26, 980 22, 270 22, 790 738 CAST IRON AND PIG IRON. TWO SPECIMENS OF CAST IRON FROM WATERTOWN ARSENAL FOUNDRY. ONE SPECIMEN CAST WITHOUT FLUX AND ONE WITH ALUMINUM FLUX. No. 812. SPECIMEN WITHOUT FLUX. Length, 3". Diameter, ".798. Sectional area, .50 square inch. Gauged length, 3". Applied loads. In gaueed length. Bemarks. Total. Per square inoli. Compres- siun. Set. Pounds. Pounds. Inch. Inch. « 600 1,000 0. 0. Initial load. 2,500 5,000 .0005 —.0001 5,000 10, 000 .0022 ■ .0007 7,500 15, 000 .0033 .0008 10, 000 20, 000 .0045 .0010 12, 500 25,000 .0056 .0013 15, 000 30, 000 .0072 .0018 17, 500 35, OOO . 0090 .0027 20, 000 40, 000 .0115 .0010 22, 500 45, 000 .0153 .0068 25, 000 50, 000 .0202 .0105 27, 500 55, 000 .0270 .0162 30, 000 60, 000 .0352 .0228 44,810 89, 620 Ultimate etrengtb. Failed by triple flexure. No. 818. SPECIMEN WITH ALUMINUM FLUX. Length, 5". Diameter, ".798. Sectional area, .50 square inch. Gauged length, 3". Applied loads. In ganged length. Kemarks. Total. Per square inch. Compres- sion. Set. Pounds. Pounds. Inch. Inch. 5U0 1,000 0. 0. Initial load. 2, 600 6,000 .0006 0. 6,000 10, 000 .0016 .0002 7,500 15, 000 .0027 .0002 10,000 20, 000 .0038 .0004 12, 500 25,000 .0050 .0006 15, 000 30, 000 .0064 .0010 17, 600 35, 000 .0080 .0016 20, 000 40,000 .0107 .0030 22, 500 45, 000 .0149 .0053 25, 000 60, 000 .0195 .0097 27, 600 65, 000 .0265 .0164 30, 000 60, 000 .0354 .0235 43, 100 86,200 Ultimate strength. Failed by triple flexure. CAST IRON AND PIG IRON, CAST IRON FROM WATERVLIET ARSENAL. 739 No. of test. Mark. Diameter. Sectional area. Tensile strength. Fracture. Total. Per square inch. 3396 3397 3232 3233 3234 3235 3236 3237 11 12 Inch. .506 .564 .505 .505 ^505 .605 .505 .506 aa.inch. .20 .26 .20 .20 .20 .20 .20 .20 Pounds. 4,340 8,370 5,610 6,090 6,130 5,980 6,100 6,130 Pounds. 21, 700 33,480 28, 050 30, 450 30, 650 29, 900 30, 500 30, 650 Medium, coarse, granular. Fine granular. Granular. Do. Do. Do. Do. Do. TEXSILE TESTS OF PIG IRONS. Specimens 1".129 diameter were tested in the grooved form. No. of test. Description. Tensile strength. Sectional area. Total. Per square inch. Inches. Sq. inch. Pounds. Pounds. ( 1.129 i 1.129 1.00 32, 890 32, 890 1.00 31,480 31, 480 • 1.129 1.00 23, 680 23, 580 1.129 1.00 24,190 24, 190 ■ .798 .50 12, 670 25, 140 .798 .50 12, 260 24, 600 1.129 1.00 38, 310 38, 310 1.129 1.00 34, 320 34, 320 .798 .60 15, 910 31,820 1.129 1.00 22, 300 22, 300 1.129 1.00 30, 990 30, 090 1.129 1.00 29, 370 29, 870 .798 .50 14,620 29, 240 1.129 1.00 36, 870 36, 870 1.129 LOO 35, 900 35,900 C 1.129 i 1.129 1.00 16, 610 16, 610 1.00 15, 720 15, 720 1.129 1.00 24, 610 24, 510 1.129 1.00 28, 440 28,140 < 1.129 [ .798 1.00 32,470 32,470 .50 17, 140 34, 280 1.129 1.00 14, 580 14, 680 1.129 1.00 14,710 14, 710 1.129 1.00 26, 450 26, 450 1.129 1.00 25, 810 25, 810 .798 .50 13, 910 27,820 .798 .60 13, 940 27,880 2961 2966 2967 2985 2986 2976 2977 2987 2978 2979 2981 2982 2962 2963 2968 2969 2974 2975 2970 2971 2972 2973 2983 2984 ^I'ij'l^^ p;s } ^™«^ »»«•« pis'- • .do. Q° SFrom same pig.. ;!". do .'.'.'".'.'.' J Hairkirk pig, pile 1 do .do. Muirkirk pig, pile 2 . Muirkirk pig, pile 3. ...do do. Muirkirk pig, pile 4., .do. ^•;^l*yP^S] From same pig. Katahdin pig . do. — do (Charcoal gun No. i. From — do I same pig. Clifton No. 5, pig do. Bichmond No. 4, gun iron pig . ...do ...do ...do COMPRESSION or BELLEVILLE SPRINGS. 741 1>^ I cv i2 'Sr^' 1 BELLEVILLE SPRINGS. 743 Fo. 3854. Four pairs of springs assembled and tested together. Total height under initial load 5".27. Measurements showing the compression and recovery of the springs, and permanent sets, were taken between the platforms of the testing machine. Applied loads. Compression or recov- ery. Total. Sncceesive. Permanent compres- sion set. Remarks. PouTidg. 500 1,000 1, 600 2,000 2,500 3,000 3,500 4,000 4,600 5,000 5,500 6,000 6,500 7,000 7,500 8,000 8,500 9, 000" 9,500 10, 000 10, 600 11, 000 11, 600 12, 000 12, 500 13, 000 13, 500 U, 000 15, 000 16,000 17, 000 18, 000 19, 000 20,000 21, 000 22, 000 23, 000 24, 000 25, 000 26, 000 27, 000 28, 000 29, 000 SO, 000 31, 000 32, 000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 41, 000 42, 000 43, 000 44,1)00 60, 000 70, 000 10, 000 20, 000 30, 000 35, 000 40, 000 Inch. 0. .0206 .0491 .0703 .0913 .1120 .1325 .1521 .1718 .1911 .2108 .2298 .2878 .3083 ,3242 .3468 .3665 .3858 .4038 .4241 .4440 .4632 . 4833 .6026 .5233 .5420 .6771 .6164 .6571 .6984 ,7391 .7815 .8248 .8684 .9130 .9683 1, 0041 1. 0512 1. 1008 1. 1496 1. 1992 1. 2524 1. 3057 1. 3580 1.4129 1.4642 1. 6182 1. 5672 1. 6139 1.6464 1. 6708 1. 6872 1.7051 1.7120 1.7189 1. 7261 .4735 .8840 1.3561 1. 5936 1. 7069 Inch. 0. .0206 .0285 .0212 .0210 .0207 .0205 .0196 .0197 .0193 .0197 .0190 .0199 .0191 .0190 .0205 .0159 .0226 .0197 .0193 .0180 .0203 .0199 .0192 .0201 .0193 .0207 .0187 .0351 .0393 .0407 .0413 .0407 .0424 .0433 .0436 .0446 .0453 .0458 .0471 .0496 .0488 .0496 .0532 .0533 .0523 .0549 .0513 .0540 .0492 .0467 .0325 .0244 .0164 .0179 .0069 .0069 .0072 1.2526 .3105 .4721 .2375 .1133 Inch. 0. Initial load. .0013 .0031 .0044 Bested 15 boors. . 0023 .0042" .0052 .0062' .0100 .oioo' .0136 .'oies' .0188 .'6250' .0327 .'0407' .'0498" .0598 ■0734 .0845 .0871 Springs removed from machine and allowed to rest 24 days ; then again assembled as before and retested. 744 BELLEVILLE SPRINGS. No. 3854— Continued. ^^t Compression or recov- ery. Permanent comprcs- siou set. Bemarks. Total. Successive. PowndB. 500 4,000 8,000 12, 000 16,000 20, 000 24, 000 28, 000 32, 000 36, 000 40,000 44, 000 48, 000 62, 000 48, 000 44, 000 40, 000 30, 000 32, 000 28, 000 24, 000 20, 000 16, 000 12, 000 8,000 4,000 4,000 8,000 12, 000 16, 000 20, 000 24,000 28, 000 32, 000 36, 000 40, 000 36, 000 32, 000 36, 000 40, 000 36, 000 32,000 28, 000 24,000 20,000^ 16, 000 12, 000 8,000 4,000 4,000 8,000 12, 000 16, 000- 20, 000 24,000 28, 000 32, 000 36,000 40, 000 36, 000 32, 000 28, 000 24,000 20, 000 16, 000 12, 000 16, 000 20, 000 24, 000 28, 000 32, 000 30, 000 40, 000 36, 000 32, 000 28,000 Inch. 0. .1505' .3131 .4698 .6388 .8095 .9877 1. 1840 1.3873 1. 6047 1.6457 1.6840 1. 7045 1. 7181 1.7085 1. 6926 1. 6667 1. 6201 1. 5010 1. 3448 1. 1758 1.0000 .8255 .6146 .4494 .3424 .1848 .3492 .5110 .6771 .8445 1. 0240 1.2190 1.4182 1.5838 1.6654 1. 6031 1.4872 1.6983 1. 6550 1.6050 1.4889 1. 3344 1. 1685 .9952 .9910 .8238 .6420 .4505 .2437 .1960 .3598 .6198 .6860 .8580 1.0337 1. 2345 1.4280 1.5842 1. 6560 1. 6046 1.4845 1. 3363 1. 1683 .9964 .8228 .6421 .7930 .9516 1.1178 1. 2640 1. 4656 1. 5934 1. 6645 1. 6050 1.4910 1. 3383 Inch. 0. .1505 .1626 .1567 .1690 .1707 .1782 .1963 .2033 .1774 .0810 .0383 .0206 .0136 .0096 .0159 .0259 .0466 .1191 .1602 .1690 .1758 .1745 .1809 .1952 .1070 .1576 .1642 .1618 .1661 .1674 .1796 .1960 .1992 .1656 .0716 .0523 .1159 .1111 .0567 .0600 .1161 .1545 .1659 .1733 .0042 .1672 .1818 .1915 .2068 .0487 .1048 .1600 .1662 .1720 .1757 .2008 .1935 .1562 .0718 .0615 .1200 .1492 .1670 .1729 .1726 .1807 .1509 .1585 .1668 .1462 .1915 .1379 .0611 .0495 ■ .1140 .1527 Inch. 0. Initial load. After snstainlng load 1 hour. .0374 .0473 BELLEVILLE SPEINGS. No. 3854— Continued. 745 Applied loads. Pounds. 24, 000 20, 000 16, 000 12, 000 8,000 4,000 Compression or, recov- Gry. Total. SuocoBSiTo. Inches. 1.1712 1.0010 .8228 .6485 .4568 .26S4 Inch. .1671 .1702 .1782 .1743 .1917 . 2044 Permanent coDipres- " flion riet. Inch. .0495 EemarliB. Loaded ten times with 40,000 pounds, releasing to 8,000 pomids between each maximum load. Under the tenth loading the springs remained 15 minutes. 600 4,000 8,000 12, 000 16, 000 20, 000 24, 000 28,000 32, 000 36, 000 40, 000 36, 000 32, 000 28, 000 24, 000 20, 000 16, 000 12, 000 8,000 4,000 .2078 .1538 .3723 .1645 .5360 .1637 .6970 .1610 .8657 .1687 1. 0480 .1823 1. 2330 .1850 1.4324 .1994 1. 5920 ' . 1696 1. 6515 .0595 1.6080 .0436 1.4980 .1100 1.3444 .1536 1. 1762 .1682 1. 0005 .1757 .8335 .1670 .6528 .1807 .4680 .1948 .2526 .2054 600 0. 4,000 .0382 8,000 .0817 12, 000 .1247 16, 000 .1637 20, 000 .2030 24,000 . .2437 28, 000 .2967 32,000 .3469 36, 000 .3920 40,000 .4170 32,000 .3726 28,000 .3330 24,000 .2892 20, 000 .2458 16, 000 .2012 12, OOO .1566 6,000 .1032 4,000 .0547 70 000 'soo .0087 4.000 .0462 8,000 .0882 12, 000 .1287 16, 000 .1717 20, 000 .2102 24,000 .2552 28, 000 .3035 32, 000 .3537 36, 000 .3967 40, 000 .4200 36, 000 .4055 32, 000 .3767 28, 000 .3347 24, 000 .2943 20,000 .2402 16,000 .2037 12, 000 .1597 8,000 .1)12 4,000 .0571 .0640 0550 Test discontinued. Test of one pair of springs. Initial load. 0. .0382 .0435 .0430 .0390 .0399 .0401 .0630 .0502 .0451 .0250 .0445 .0395 .0438 . 0434 .0446 .0446 .0534 .0485 .0040 .0375 .0420 .0405 .0430 .0385 .0460 .0483 .0502 .0420 .0243 .0146 .0288 .0420 .0404 .0451 .0455 .0440 .0485 .0541 .0061 This load applied and released. A disc of brass ".026 thickness now placed between the two springs and loads renewed. 746 BELLEVILLE SPRINGS. No. 3854— Continued. Applied loads. Compression or recov- ery. Permanent compres- sion set. Remarks. Total. Successive. Poimds. ■ 500 4,000 8,000 12, 000 16, 000 20, 000 24. 000 28,000 32, 000 36, 000 40, 000 36, 000 32, 000 28, 000 24,000 20,000 16, 000 12,000 8,000 «,000 .Inch. 0. .0392 .0807 .1194 .1596 .2031 .2438 .2915 .3405 .3851 .4115 .3982 .3708 .3331 .2909 .2482 .2032 .1580 .1081 .0574 Inch. 0. .0392 .0415 .0387 .0402 .0435 .0407 .0477 .0490 .0446 .0264 .0133 .0274 .0377 .0422 .0427 .0460 .0452 .0499 .0507 Inch. 0. Initial load. .0040 BELLEVILLE SPBINGS. 747 No. 4355. Five pairs of steel springs assembled and tested together. , Total height of springs under initial load of 500 pounds, 6".10. Total weight, 54J pounds. Dimensions of sifagle springs : Exterior diameter, 8".60 ; diameter of central hole, 2".56 ; thickness of metal, ".37. Oonicity of spring, ".25. Applied loads. CompreBsion or recov- ery. Permanent compres- sion set. Bemarks. Total. Successive. Poundi. 500 4,000 8,000 12, 000 16,000 20, 000 16, 000 12, 000 8.000 4,000 500 4,000 8,000 12, 000 16, 000 20, 000 24, 000 28,000 32,000 36,000 40, 000 36, 000 32, 000 28,000 24,000 20, 000 16, 000 12,000 8,000 4,000 600 12, 000 11,900 12,000 600 Loaded 500 4,000 8,000 12, 000 16,000 20, 000 24,000 28, 000 32, 000 36, 000 40,000 36, 000 32, 000 28, 000 24, 000 20, 000 16, 000 12, 000 8,000 4,000 500 JneftM. 0. .293 .601 .925 1.282 1,684 1,384 1.054 .719 .379 Inch. 0. .293 .308 .324 .357 .402 .300 .330 .335 .340 Inch.. 0. Initial load. Load left on springs Satnrday night. Load on springs Monday morning, after forty hours' rest. ]g to 8,000 ponnds between each maximnm load. 3 springs remained 15 minutes. .026 .326 .637 .951 1.316 1.690 1.986 2.140 2,230 2.285 2.321 2.296 2.258 2.196 1.993 1.814 1.616 1.261 .901 .506 .300 .311 .314 .364 .375 .296 .154 .090 .055 .086 .025 .038 .062 .203 .179 .198 .355 .300 .395 ■ .117 1.051 1.066 .113 nds, releasii b loading th .163 ten times wi th 40,000 pon der tlie tent .452 .777 1.094 1.471 1.835 2.061 2.181 2.251 2.293 2.322 2.300 2.263 2.204 2.111 1.949 1,667 1.316 .949 .561 .289 .325 .317 .377 .304 .226 .120 .070 .042 .029 .022 .037 .059 .093 .162 .282 .351 .367 .388 .163 748 EUBBER BUFFERS. COMPEESSION OF RUBBER BUFFERS. No. 4239. Weight, 6 pounds 4 ounces. A^pplied loads. In total length. Kemarlcs. Total. Per sqnare inch. Compres- sion. Set. Pounds. 6,000 Pounds. Inches. 2.21 Inches. .10 .10 .26 .20 .50 .42 After 5 minutes' rest. After 5 minutes' rest. After 5 minutes' rest. 10, 000 2.86 20, 000 3.28 No. 4240. Weight, 6 pounds 4J ounces. Length, 5".00. Diimeters I ^^terior, 4".96. Uiameters, ^ ^ y,^^^ Applied loads. In total length. Remarks. Total. Per square incli. Compres- sion. Set. Pounds. 5,000 Founds. Inches. 2.03 Inches. .22 .18 .43 .36 .71 .63 After minutes' rest. After 5 minutes' rest. After 5 minutes' rest. 10,000 2.75 20, 000 3.23 RUBBER BUFFERS. No. 4241. 749 Weight, 6 pounds 8J ounces. Length, 5". Diameters i Exterior, 5". iJiameters, ^ ^^^^^ y,Q^ Applied loads. In total length. Bemarks. Total. Per squaTe incn. Compres- sion. Set. Founds. 6,000 Pounds. Inches. 1.80 Inch. .12 .08 .28 .24 .47 .40 After 5 minntes' rest. After 5 minutes' rest. After 5 minutes' rest. 10, 000 2.59 20,000 3.10 No. 4242. Weight, 6 pounds 8J ounces. Length, 5".01. T^• j.„ „ ( Exterior, 5". Diameters, { ^^^^^ y,[Q^^ Applied loads. In total length. Eemarks. Total. Per square inch. Compres- sion. Set. Pounds. 5, 000 \ Pounds. Inches. 1.79 Inch. .10 .07 .27 .21 .44 .38 After 5 minutes' rest. After 5 minutes' rest. After 5 minutes' rest. 10, 000 2.61 20,000 3.14 No. 4243. Weight, 6 pounds 3J ounces. Length, 5". Diameters i Exterior, 4".94. iJiameters, ^^ g^j.^^ y,Qg^ Applied loads. In total lenfith. Eemarts. Total. Per square inch. Compres- sion. Set. Pounds. 5,000 Pounds. Inches. 2.07 Inch. .20 .14 .37 .30 .67 .47 After 6 minutes' rest. , After 6 minutes' rest After 5 minutes' rest. 10, 000 2.76 20,000 3.23 750 RUBBER BUFFERS. E"o. 4267. Weight, 6 pounds 6 ounces. Length, 4".98. Diameters, ^ Exterior, 4".99. .{ Bore, 1".05. Applied loads. In total length. Remarks. Total. Per square inoh. Compres- sion, Set. Founds. 3,370 Ponnds. Inches. 1.25 Inch. .08 .05 .05 .04 After 2i hours' rest. After 21^ hours' rest. Alter 24 hours' rest. No. 4268. Weight, 6 pounds 5 ounces. Length, 5".03. Diameters \ Exterior, 4".93. Diameters, j -^ -^„ Qg_ Applied loads. In total length. Kemarka. Total. Per square incn. Compres- sion. Set. P0W7lrf«. 3,286 Pounds. Inches. 1.26 Inch. .06 .03 .01 .01 After 2i hours' rest. After 21^ hours' rest. After 24 hours' rest. No. 4269. Weight, 6 pounds 8 ounces. Length, 5".06. Diameters i Exterior, 4".98. .ijiameters, | ^ y, qq Applied loads. In total length. Eemarks. Total. Per square inch. Compres- sion. Set. Pounds. 6,710 Pounds. {Inches. 2.10 Inch. .14 .07 .05 .04 After 2i hours' rest. After 21i hours' rest After 24 hours' rest. RUBBER . BUFFERS. 751 No. 4270. Weight, 6 pounds 6 ounces. Length, 4".97. -r»„ o*-„„c f Exterior, 4".94. Diameters, j ^^^^^ y^^QQ Applied loads. In total lengtli. Bemarks. Total. Per square inch.' Compres- sion. Set. Pounda. 6,600 Pounds. Inches. 2.07 Jjicft. .09 .05 .04 .03 After 2i lioars' rest. After 2u hoars' rest. After 24 hours' rest. So. 4271. Weight, 6 pounds 5 ounces. Length, 4".96. Exterior, 4".99, Diameters, -I Bore, 1".06. Applied loads. In total lengtli. Bemarks. Total. Per square inch. Compres- sion, Set. Pmtnds. 13,480 Pounds. Inches. 2.83 Inch. .29 .20 .19 .19 After 2J hours' rest. After 20 hours' rest. After 24 hours' rest. N"o. 4272. Weight, 6 pounds 6 ounces. Length, 5".01. -r.. - ( Exterior, 4".99. Diameters, J ^^^^^ y,'^^^ Applied loads. In total length. Bemarks. Total. Per square inch. Compres- sion. Set, Pounds. 13,480 Pounds. Inches. 2.86 Inch .33 .24 .23 .23 After 2i hours' rest. After 20 hours' rest. After 24 hours' rest. 752 ETTBBEE BUFFERS. No. 4317. Weight, 10 pounds 14 ounces. Length, 6".03. Diameters i E^^rior, 5".93. jjiameters, | ^ -^„_j^g Applied loads. In total length. Bemarks. Total. Per square inch. Compres- sion. Set. Pounds. 5,000 10,000- 20, 000 Pounds. Inches. 1.27 2.29 3.21 Inch. .01 .03 .11 .05 Inimediate set. After 20 minutes. QUADRANTS FROM DISCS OF 12-INCH B. L. RIFLED MORTAR BODIES NOS. 12 AND 24. Tested by compressive stress applied in the direction of the chord of the quadrant. Length of disc, c ist-iron body No. X2, ".75, body No. 24, ".97. H. Ex. 165 4:8 7.53 lZ-inchy^.Ij.JRzfle€b cTytoT^ii^^f^tS' . QtZjCu^CfTZJ&cS i/t'c/tti^C^J'.JSo^z/ c^. ^^4<^ J^cr&o^Tz^ < HEx /As:...b\ 2 QUADRANTS PKOM 12-INCH MOKTAE BODIES. 755 A s -S ^ 5 tJ S m •a o Cm s* O O 3 O A a ■9 1 a M ■3 a 1 1 ? 1 o [3 i i a 5, a o ^p| o "o oo o w aaaa h N. &^ (3 cd 01 e3 c3 SM's S^IS'SS If If S S3" BSs'a g'31'3 DS 39 l9l'a p a ;^ d S 2 2 2 lii^ -§§|s §§§§ aMMM ^3)^3, SmmS) a&aa "S'^'S otfoo- o"o-o"o'- a a e o BBS'S SFSS •l-S'SI BB'B'B a a a a 1=1 S (^ d a t:l g d C Pi ^ 9 O) ® IB ID S CD « S O O C3 O o O O o u u u u 1/5 WO mo mm o o o o m o ^ ^' TOM rHiaOM t-fM0»O fflSt^S H*Stei-5- i":;'^'^" ^hmMtH ^ w '^ ^ - W S+s + + S.rt«w m .inecoco osooo iMOiOOOi OOSOJOS ■ III § = ooo OS OOO oo)0»ce 003 0103 I-ii-irH 'i-ii-irH t-i * " * rt • • • .as a p. g--ag H owco NOOOOTfC OiOOCT MMcSiM p!i- in joo lOtoiom TOtH •* Tf -e « fat® o a Ph «3 ^ O >— < 111 ^JfflCSMOO miftMM isIS CO CO CO •H ilN-INrtlN- C4 QCM 03 -dlMTOTO i-Tcfl'ffq'i-r Cq-MWCf «"c^w"c" -^ 1 o J9 00l>'*lO t>t-oos sass CO TO M CO ■* •*-.*•■* TH^'wrH 03 03 03 0a l> t^ t^ t-^ S gcqwNiM (N(NM(N i-t~-ir^r^ r-ir-liHrH (-1 H -^4i ss .^ __ir_ ^6^^ 8/yy ^ I * 1^ &^'^ ""^ CM in =0^ RAILWAY AXLES. 779 N"o. 4201. Marks, \^' Diameter, 1".129. Sectional area, 1 square inch. Gauged length, 8". Applied loads. In ganged length. Eemarlcs. Total. Per square iucli. Elongation. Set. Pounds. 1,000 5, Olio 10, 000 15, OOQ 16, 0.00 17,000 18, 000 19, 000 20, 000 21, 000 22, 000 23, 000 24,000- 26, OOQ 20, 000 27, 000 28, 000 29,000 30, 000 31, 000 33, 000 33,000 34, 000 3.5,000 36, 000 37, 000 38, OOO 39,000 40, 000 41,000 42, 000 43, 000 44, 000 Pounds. 1, 000 5,000 10, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21,000 22, 000 23, 000 24, 000 25, 000 26, 000 27, 000 28, 000 29, OUO 30, 000 31, Olio 32, 000 33, 000 34, 000 35, 000 86, 000 37, 000 38, 000 39, 000 40, 000 41, 000 42, 000 43, 000 44,000 Inches. 0. .0011 .0025 .0040 .0045 .0060 .0055 .0063 .0077 .0090 .0156 .0226 .0332 .0460 .0578 .0698 .0867 .0947 .1242 .1460 .1715 .20 .22 .26 .30 .33 - .38 .42 .49 .57 .67 .80 1.00 1.14 Inch. 0. 0. 0. 0. Initial load. Elastic limit. Tensile strength. =14.3 per cent. Elongation of inch sections, ".09, ".07, ".08, ".10, ".17, ".22, ".25*, ".26. Fractured 1".6 from the neck, or 9^" from the end of the axle. Api)earance, fibrous and dull spongy 60 per cent., granular 40 per cent. Diameter at fracture, 1". Area, .785 square inch. Contraction of area, 21.5 per cent. Numerous cracks were developed in the cylindrical surface of the stem at a distance of 7J" to 10|" from the end of the axle. 780 RAILWAY AXLES. No. 4202. MBs Marks, Diameter"l".129. Sectional area, 1 square inch. Gauged length, 8", Applii-fl Iliads. In gauged length. Remarks. TolA. Per square inch. Elongation. Set. Pounds. 1,000 5,000 10, 000 16, (.00 16.000 17. 01)0 18 000 19, 000 20, 000 21, 000 22, OIlO 23, 000 24,000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31,000 32, 000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 41,000 42, 000 43, OM 44 000 45, 000 Pounds. 1,000 5,000 10, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21,000 22, 000 23, 000 24, 000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 34 000 35, 000 36, 000 37, 000 38, 000 39, 000 40,000 41, 000 42, 000 43, 000 44, (00 45, OOO Inches. 0. .oo;o .0025 .0040 .0045 .0048 . 0058 . 0072 .00«7 . 0120 .0190 .02S0 .0420 .0538 .0685 .0820 .0065 .1130 .1379 .1635 .19 .22 .24 .28 .32 .36 .40 .46 .53 .60 .68 .79 .87 1.28 1.54 Inch. 0. 0. 0. .0001 Initial load. Elastic limit. Tensile strength. = 19.3 per cent. . Elongation of inch sections: ".15, ".19, ".31, "38*, ".15, ".13, ".11 12". Fractured 4" from the neck, or 8J" from the end of the axle. Ap- pearance, fibrous .50 per cent., granular 50 per cent. Diameter at fracture, ".92. Area, .665 square inch. Contraction of area, 33.5 per cent. Cracks developed in the cylindrical surface of the stem at a distance of 7" to lOJ" from the end of the axle. KAILWAY AXLES. No. 4203. 781 Marks, ^^ Diameter, 1".129. Sectional area, 1 square inch. Length of stem, 12". Gauged length, 10". Applied loads. Total. Per square incli. Elongation. Set. In gauged length. Kemarks. Pounds, 1,000 6,000 10,000 15, 000 20, 000 21, 000 22, 090 23, 000 24,000 29, 000 26,000 27, 000 28,t)00 29, 000 30, 000 31, 000 -32, 000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 42, 000 44, 000 45, 940 Pounds. 1,000 5,000 10, 000 15, 000 20, 000 21, 000 22, 000 23, 000 24, 000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 •33,000 34. 000 35, 000 36, 000 37, 000 38,000 39, 000 40, 000 42. 000 44, 000 45, 940 Inches. 0. .0015 .0032 .0050 .0070 .0073 .0078 .0081 .0092 .0104 .0129 .0180 .0325 .0510 .0746 .1015 .1325 .18 .20 .24 .28 .33 .39 .44 .50 .64 .90 1.72 Inch. 0. Initial load. Elastic limit. Tensile strength. =17.2 per cent* Elongation of inch sections : ".53*, ".21, ".16, ".14, ".13, ".13, ".11, ".09, ".10, ".12. Diameter at fracture, ".80. Area, .503 square inch. Contraction of area, 49.7 per cent. Appearance of fracture, fibrous. 782 EAILWAY AXLES. No. 4204. Marks, ^^' Diameter, 1".129. Sectional area, 1 square inch. Length of stem, 12". Gauged length, 10". Applied loads. In gauged length. Eemarks. Total. Per square inch. Elongation. Set. Pounds. 1,000 8,000 10,000 15,000 20, 000 21, 000 22, 000 23, 000 24, 000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31,000 32, 000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 41, 000 42, 000 43, 000 44,000 45, 000 46, 000 46,490 Pounds. 1,000 5,000 10, 000 15, 000 20, 000 21,000 22, 000 23, 000 24, 000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31, 000 32, 000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 41, 000 42, 000 43, 000 44, 000 45, 000 46, 000 46,490 I7iches. 0. .0017 .0036 .0052 .0070 .0075 .0079 .0082 .0088 .0092 .0100 .0151 .0248 .0402 .0540 .0712 .0950 .1170 .1490 .1825 .22 .27 .31 .37 .42 .48 .54 .64 .78 .91 1.16 1.41 1.66 Inch. 0. Initial load. Elastic limit. Tensile strength. =16.0 per cent. .0002 .0002 .0002 .0008 Eloagitiou of idcli sections: ".53*, ".21, ".19, ".15, ".14, ".12, ".09, ".08, ".07, ".08. Fractured 1".6 from neck. Appearance, fibrous. Diameter at fracture, ".83. Area, .541 square inch. Contraction of area, 45.9 per cent. EAILWAY AXLES. No. 4205. 783 Marks, '^^' Diameter, 1".129. iSectional area, 1 square inch. Length of stem, 12". Gauged leugth, 10". Applied loads. In gauged length. Bemarks. Total. Per square inon. , Elongation. Set. Pounds. 1,000 6,000 10, 000 16,000 20, 000 21, 000 22, 000 23,000 24, 000 25, 000 26, 000 27, 000 28,000 29, 000 30, 000 31, 000 32, 000 33, 000 34, 000 36,000 36, 000 37, 000 38, 000 39, 000 40, 000 41,000 42, 000 43,000 44,000 45, 000 46. 260 *l, 300 Pounds. 1,000 5,000 10, 000 16, 000 20, 000 21,000 22, 000 23,000 24, 000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31,000 32, 000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39,000 40, 000 41, 000 42, 000 43,000 44,000 45, 000 46, 260 Inches. 0. .0015 .0032 .0050 .0068 .0072 .0076 .0031 .0084 .0088 .0097 .0120 .0198 .0340 .0575 .0780 .1025 .1380 .1720 .22 .26 .30 .31 .36 .47 .54 .62 .72 .88 1.03 1.57 Inch. 0. Initial load. Elastic limit P Tensile etrength. At time of rupture. = 17.6 per cent. 0. 0. .0001 .0006 1.76 Elongation of inch sections! ".09, ".09, ".10, ".12, ".13, ".16, ".15, ".18 ".21, ".53*. Fractured 1".70 from the neck. Appearance, fibrous. Diameter at fracture, ".83. Area, .541 square inch. Contraction of area, 45.9 per cent. 784 RAILWAY AXLES. No. 4206. Marks, ^,^' Diameter, r'.129. Sectional area, 1 square inch. Gauged length, 8". Applied loads. Id gauged length. Eemarts, Total. Per square incli. Elongation. Set. Pounds. 1,000 6,000 10, OOO 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21,000 23, 000 23, 000 24, 000 25, 000 26, 000 27, 000 28, 000 29, 000 30, 000 31,000 32, 000 . 33,000 34, 000 35, 000 30,000 37, 000 38, 000 39, 000 • 40, 000 41,000 12,000 43, 000 44, 000 45, 000 40. 000 46, 670 Pounds. 1,000 5,000 10, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 21,000 22, 000 23, 000 24, 000 25, 000 26, 000 27, 000 28, OUO 29, 000 30, 000 31, 000 32, 000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 41, 000 42, 000, 43, 000 44, 000 45, OtO 46,000 40, 670 Inches. 0. .0011 .0026 .0041 .0045 .0019 .0055 .0065 .0084 .0110 .017i .0285 .0412 .0515 .0051 .0780 .0965 .1185 .1360 .1625 .19 .22 .25 .28 .30 .34 .40 .44 .48 .54 . .62 .70 .78 .98 1.21 1.57 1.90 ■ Inch. 0. Initial load. Elastic limit. Tensile strength. = 23.8 per cent. 0. 0. Elongation of irch sections: ".14, ".17, ".17, ".25, ".57*, '•'.26, ".10, Fractured near middle of stem, or 7§" from the end of the axle. Appearance, fibrous. Diameter at fracture, ".83. Area, .541 square inch. Contraction of area, 45.9 per cent. 15. . RAILWAY AXLES. No. 4207. 785 Marts, ^c^' Diameter, 1".129. Sectional area, I square inch. Gauged length, 8". Applied loads. In gauged length. Kemarka. Total. Per square inoh- Elongation. Set. Pounds 1,000 5,000 10,000 15,000 16,000 17, 000 18, 000 19,000 20, 000 21,000 22, 000 23,000 24,000 25, 000 26, 000 27, 000 28, OUO 29, 000 30, 000 31,000 32, 000 33, 000 34,000 35,000 36, 000 37,000 38, 000 39, 000 40, 000 41,000 42, 000 43,000 44,000 45, 000 45,810 Pmmda. 1,000 5,000 10, 000 15, 000 16,000 17, 000 18, 000 19, 000 20,^00 21,000 22,-000 23, 000 24,000 25,000 26, 000 ,27, 000 28,000 -29,000 30, 000 31, 000 32,000 33, 000 34, 000 36, 000 36,000 37, 000 38,0()0 39. 000 40, 000 41,000 42, 000 43, 000 44, 000 45, 000 45,810 7ncAe«. 0. .0012 .0025 .0040 .0042 .0044 .0047 .0052 .0002 .0096 .0160 .0330 .0622 .0685 .0855 .1020 .1242 .1430 .1725 .20 .22 .26 .28 .31 .36 .40 .44 .49 .66 .61 .70 .80 .93 1.13 1.56 1.99 0. Initial load. Elaatio limit. Tensile strength. =24,9 per cent. 0. .0001 Elongation of inch sections, ".15, ".22, ".27, ".65», ".24, ".17, ".15, ".14. . Fractured 4" .25 from the neck, or 8" from the end of the axle. Appearance fibrous. ' Diameter at fracture^ ".80. Area, .503 square inch. Contraction of area, 49.7 per cent. H. Ex. 165 50 786 RAILWAY AXLES. No. 4208. Marks, ^^' Diameter, 1",129. Sectional area, 1 square inch. Gauged length, 8". Applied loads. In gauged length. Bemarks. Total. Per square inch. Elongation. Set. Pounds. 1,000 6,000 10,000 15, 000 16, 000 ' 17, 000 18, 000 19,000 20, 000 21,000 22, 000 23, OUO 24,000 25, 000 26,000 27,000 - 28, 000 29,000 , 30,000 .31,000 32, 000 33,000 34, OPO 35,000 ' 36,000 37, 000 <)8,000 . i!9, 000 40,000 '41,000 42,000 ' , 43,000 44,000 45, 000 45,730 Pounds. 1,000 5,000 10, 000 15,000 16, 000 17,000 18,000 19, 000 20,000 21, 000 22,(00 23, 000 24, 000 25, 000 26, 000 27,000 28, 000 29, 000 30, OOA . 31,000 32, 000 33, 000 34,000 .35,000 36,000 ^ 37,000 38,000 39,000 40,000 41,000 42,000 43,000 44, 000 45,000 45, 730 Inches. 0. .0011 .0026 .0041 .0043 .0046 .0052 .0062 .0086 .0122 .0160 .0308 .0440 .0664 .0665 .0835 .0990 .1192 .1380 .1640 .19 .22 .25 .28 .31 .35 .40 .45 .51 .69 .66 .77 .90 1.09 1.50 1.81 Inch. 0. 0. .0001 .0001 Initial load. Elastic limit. Tensile strength. = 22.6 per cent. Elongation of inch sections, ".12, ".U, ".U, ".28, ".52», ".23, ".21, ".17. Fractured at middle of stem, or 7f" from the end of the axle. Ap- pearance, fibrous. "i Diameter at fracture, ".85. A.rea, .567 square inch. Contraction of area, 43.3 per cent. RAILWAY AXLES. 787 CO woo coi>n ?3gS| ; '111 ss"^ t--a,-oif O't^rf a lO-ao'oo" o-B-tf sss S"oo""> <=S^! - Oiofo" *■«■ . -*tfi"« feJLt-- tOM-j" m-&" oTuj-N- "'=¥^ oTttfor' ufo- ^- >-u.-N als 'S CMi-lrH 1 !o'=r«r cTaoT e- t-^oo-r-" WTWM no-m" l>'ffl"N oToo-of rtOl- .0 fe&Vr 9 ; i i i : ! i i : i i.j i j i !j| !*r ■ I = : : i ! Pi ■g . t • . . • • ! \ I '• I ; J ; il \ 1 ! ! I I M '. : ■ : : ; ; ; ; J ; ; \ \ \ \ \- \ :.&. ; ; J : : ; -1 : i : %-■■% §* ! *^ ii i : t>' : :a ■ \* Ml i i 1 : i : <) a B m * (0 • . m *gag55 l^-s III ^^^ III l-si p 13 TS^ %% ^A^. s : ; SSS S^S S^^ N :&; : :S K s « ; • ', I I ali »|01CC«« o» w -lO'* ' dOaoa OrHO otn 10 t-OJO» o»i>co rA^S trfr4 06IOIJ ■ xaain "l-s i? 6 s^s^ t-4inco iH^^ §ss CO1H.H orao Okn lA COtH-H — ip-S. sss sss .sss .-ustotr s .^ifiiji Wil IM ,IW IH lii Jill Ji Jliii W,R * o'S 000000 ■g 1 . - ... ... . . - 1 L •- - . - rf^ . .- - » ■5 aas aas a a a a|| asa asa 's a aaa a a a ppfi. ppp Si3B Sno fiRP ppp S3 S ppp ppS Si,- ♦iifl t-t- (Din CO ■^lace TpCOO 000 aODM oco CO oicoto 0DO»-A "oSci^ ^oim S£^^ 94 00^ 0^- <^ mTiieJ l-l I-lllI-t S'B " .. li-ii ooo oeo 000 sss 000 ^ ^Soo Smo ot2o8 00 iSS'S ssa ^"fs s-^-^- SSig" S-3 «■ !§■«!?■ ^":g"^" A< -^ OOCS 000 SS ooo ooo 00 grHFHM SScSffS 3SS ass COMM- ort--or irf-QO- f"^ MUiUi S-3-S i-CiH iH C4C4C4 .iSSB ooo ooo 000 ooe 000 00 S OOO OflS 000 riii-Hf-?»H i-ti-liH F^*^^ r^T-irH rHrHrH 1-1 rl 1-1 AA IH iH-HiH rHrHn I 1:3 :in .Hr-tW caeaoa' aaoi okoa Aoa §§ o> 09 09 A IB a a a iHrtiH iHfHrH P 1^ a • : A 1 I e ; : A : ; $ ' ; •a 1 I OD !:: I : ■• ; : \-- L: : L:; r I i;: ]■ = M^^ M-S^ «5^ »^^ m^^ «^^ S'* ^ a '^ i ; a ; I i^ : : *^ ; i a ; : a : : a : a I ; a i ; 4-4 03-« to gf:S e>o-H Sgg OiH N eoHiifl CDt-OO iZi" ssS 51515! 51 5; 51 51 51 51 515:5! 5! 5! 5! ^'^ '^ ssg 535153 STEEL RAILS, TRANSVERSE TESTS, \ AND HARDNESS. 789 2Jelxx.yvo tSec^tzovt^ \iE\../^ir 51 2 tJ^Zcy CZvLTG iSe^^MT^ \^ I + ^ HEx._/^-^- 51 2 STEEL BAILS. 791 Bight samples of steel rails were contributed for test by Mr. P. A, Delano, of the 0. B. and Q. E. R., Chicago, 111.,- of which four samples were known as the Delano section and four samples as the McClure section, each of 85 pounds weight per yard. The drawings illustrate the form and dimensions of the templates from which these sections were rolled. The actual weight and height of each is recorded with the details of the transverse tests. The transverse tests were made with the rail supported on end bear- ings 30 inches apart, to obtain good bearing surfaces for which, seats were planed on the base of the rail. Loads were applied at the middle of the length, using a plunger having 1 J inches length of face. Hardness determinations were made on the heads of the rails and also at different depths below the original surface. The metal was planed off diftierent depths for the purpose of receiving the cut of the indenting tool used. 792 STEEL RAILS STEEL BAIL. Delano section. Weight, 85J pounds per yard. Height, 5".02. Marks, 5115.. No. 53. Applied loads. Deflection Saccessive deflections. Deflection Remarks. Pounds. 2,000 4,000 6, 000- 8,0(0 10, 000 12, 000 14, 000 16, 000 18, 000 20, 000 22, 000 24,000 26, 000 28, 000 30, 000 32, 000 34, 000 36, 000 38, 000 40, 000 42, 000 44, 000 46, 000 48, 000 . 50, 000 53, 000 54, OOO 56, 000 58, 000 60, 000 62, 000 64, 000 66, 000 68, 000 70, 000 72, 000 74, 000 76, 000 78, 000 80, 000 82. OOO 84, 000 86, 000 88, 000 go, 000 92, 000 94, 000 96, 000 98, 000 100, 000 102, 000 lOd, 000 106, 000 108, 000 110, 000 112, 000 116, 000 118, 000 120, 000 122. 000 124, 000 126, 000 128, 000 130, 000 Inch, 0. .0032 .0058 .0078 .0099 .0120 .0141 .0161 .0181 .0200 .0220 .0240 .0259 .0278 .0297 .0313 .0330 .0348 .0365 .0383 .0400 .0419 .0438 .0455 .0473 .0491 .0509 . 05^4 .0543 .0562 .0582 .0600 .0618 .0636 .0655 .0676 .0695 .0717 .0737 .0758 .0782 .0804 . .0829 .0852 .0880 .0905 .0929 .0953 .0981 .1024 .1048 .1080 .1105 .1134 .1180 .1227 .1306 .1349 .1410 .1500 .1563 .1665 .1824 .1973 Inch. 0. .0032 .0026 .0020 .0021 .0021 .0021 .0020 .0020 .0019 .0020 .0020 .0019 .0019 .0019 .0016 .0017 .0018 .0017 .0018 .0017 .0019 .0019 .0017 .0018 .0018 .0018 .0015 , .0019 .0019 .0020 .0018 .0018 .0018 .0019 .0021 .0019 .0022 .0020 .0021 .0024 .0022 .0025 .0023 .0028 .0025 .0024 .0024 .0028 .0043 .0024 .0032 .0025 .0029 .0046 .0047 .0079 .0043 .0061 .0090 .0062 .0103 .0159 .0149 Inch. 0. Initial load. .OOU .0020 .0022 .0030 .ooa .0076 .0199 . 0782 Scale starts off In vicinity of middle 'bearing. Test discontinned. STEEL RAILS. 793 STEEL BAIL. No. 54. McClure section. Weight, 84f pounds oer yard. Height, 5".17. Mark, 5567. Applied loads. Deflections. Successive deflectiouB. Deflection] sets. Bemai'ks, Pound*. 2,000 4,000 6,000 8,000 10, 000 12, 000 14,000 16,000 18,000 20, 000 22, 000 24,000 26,000 28, 000 30,000 32, 000 34, 000 36, 000 38, 000 40, 000 42, 000 44,000 46, 000 48. 000 50, 000 52,000 54,000 56,000 58, 000 60, 000 62,000 64,000 66,000 68, 000 70, 000 72,000 74,000 76, 000 78, 000 SO, 000 82,000 84, 000 86,000 88,000 90, 000 92, oOO 94,000 96, 000 98, 000 100,000 102,000 104, 000 106,000 108,000 110,000 112,000 114, 000 lie, 000 118, 000 120,000 122, 000 124, 000 126, 000 128, 000 130,000 Inch. 0. .0022 .0047 .0069 .0089 .0110 .0130 .0149 . 0167 .0186 / .0203 .0223 .0241 .0260 .0278 .0294 . 0310 .0329 .0347 .0366 .0383 .0400 .0417 .0436 .0454 .0471 .0490 .0508 .0525 .0543 .0560 .0577 .0.595 .0612 .0630 .0651 .0670 .0690- .0708 .0726 .0747 .0764 .0782 . 0802 .0822 .0847 .0869 .0876 .0896 .0916 .0939 .0961 .0982 .1010 .1039 .1068 .1096 .1140 .1181 .1221 .1300 .1363 .1453 .1580 .1743 Inch. 0. .0022 .0025 .0022 .0020 .0021 .0020 .0019 .0018 .0019 .0017 .0020 .0018 .0019 .0018 .0016 .0016 .0019 .0018 .0019 .0017 .0017 .0017 .0019 .0018 .0017 .0019 .0018 .0017 .0018 .0017 .0017 .0018 .0017 .0018 .0021 .0019 .0020 .0018 .0018 .0021 .0017 .0018 .0020 .0020 .0025 .0018 .0011 .0020 .0020 .0023 .0022 .0021 .0028 .0029 .0029 .0028 .0044 .0041 .0040 .0079 .0063 .0090 .0127 .0163 Inch. 0. Initial load. Scale starts off in vicinity of middle bearing. Test discontinned. .0002 .0^04 .'oooi" .0006 .0007 ,0010 .0013._ .0021 .0030 .0030 .0037 .0068 .0161 .0578 794. STEEL RAILS. STEEL BAIL. No. 55. Delano section. Weight, 84f pounds per yard. Height, 5".02. Mark, 5117. ^iSa^r Deflections. Sncoessive deflectione. Deflection" sets. Kemarks. Pownda. 2,000 10, 000 20, 000 30, 000 40. 000 50, 000 60,000 70, 000 80, 000 82, 000 84, 000 86, 000 88, 000 90, 000 92,000 94,000 96,000 98, 000 100, 000 102,000 104, 000 106, 000 108.000 110, 000 112, 000 114, 000 116, 000 118, 000 120,000 122, 000 124, 000 126, 000 128, 000 130, 000 132, 000 134, 000 136,000 138, 000 140,000 Inch! 0. .0093 .0190 .02a3 .0371 .0460 .0550 .0636 .0725 .0745 .0765 .0782 .0800 .0821 .0840 .0860 .0880 .0900 .0922 .0944 .0904 .0987 .1009 ,- .1033 .1060 .1083 .1109 .1133 .1170 .1202 .1230 .1260 .1302 .1358 .1433 .1502 .1620 . 17.')0 .1895 Inch. 0. Inch. 0. .0003 .0003 .0005 .0006 .0008 .0008 .0009 .0012 Initial load. Scale starts off. t Test discontinned. .0020 .0020 .0017 .0018 .0021 .0019 .0020 .0020 .0020 .0022 .0022 .0020 .0023 .0022 .0024 .0027 .0023 .0026 .0024 .0037 .0032 .0028 .0030 .0042 .0058 .0075 .0069 .0118 .0130 .0145 .0020 .0035 .0052 .0099 .0190 .0618 STEEL RAILS. 795 STEEL BAIL. No. 56. McClure section. Weight, 84i poandB per yard. Height, 5'M8. Mark, S621. AppUed loads. Deflections. Successive deflections. Deflection sets. Bemarks. Pounds, 2,000 10, 000 20, QUO 30, 000 40, 000 50, 000 80, 000 70, 000 80, 000 82, 000 84,000 86, 000 88,000 90, 000 92 000 94, 000 96, 000 98,000 100, 000 102, 000 104, 000 106,000 108, 000 110,000 112,000 114,000 lie, 000 118, 000 120, 000 Inch, 0. .0091 .0190 .0283 .0370 . 0462 . 0.W4 .0660 .0767 .0793 .0817 .0843 .0869 .D900 .0931 .0958 .0988 .1020 .1054 .1097 .1130 .1178 .1223 .1285 .1355 .1430 .1578 .1726 .1950 Inch, 0. Inch, 0. .0003 Initial load. Scale Starts off. Test discontinued. .0007 .0052 .0026 .0024 .0026 .0026 .0031 .0031 .0027 .0030 .0032 .0034 .0043 .0033 .0048 .0045 .0062 .0070 .OOW .0148 .0148 .0224 .0099 .0162 .0298 .0850 796 STEEL BAILS. STBBL BAIL. No. 57. Delano section. Weight, 81,72 pounds per yard. Height, 4".99. Mark, 6068, ^t Deflections. Snooesaive deflections. Deflection sets. Kemarks. Pounds. 2,000 10, 000 20, 000 30,000 40,000 50, 000 60, 000 70, 000 80, 000 90,000 92, 000 94,000 96,000 98,000 IOC, 000 102,000 104,000 106, 000 108,000 110, 000 112,000 114,000 116, 000 118, 000 120, 000 122, 000 124,000 • 126, 000 128, 000 .130,000 Inch. 0. .0094 .0197 .0290 .0384 .0474 .0568 .0663 .0760 .0870 .0894 .0918 .0944 .0972 .0995 .1025 .1051 .1086 .1120 .1168 .1213 .1268 .1340 .1433 .1647 .1680 .1821 .1992 .2126 .2338 I'Mh. 0. Inch. 0. .0002 Initial load. * Scale starts oft. Test discontinued. hi .0006 ^ .0011 .0037 .0024 .0024 .0026 .0028 .0023 .0030 .0026 .0034 .0035 .0048 .0045 .0065 .0072 .0093 .0114 .0133 .0141 .0171 .0134 .0212 .0067 .0140 .0412 .1077 STEEL KAILS. 797 STEEL BAIL. No. 58. McOlare sectioD. Weight, 83J pounds per yard. Height, 5".18. .Mark, 5602. Applied loitdB. Deflections. Successive d^liectious. Deflection sets. Kemarks. Founds. 2,000 10,000 20, 000 30, OOIL 40,6'iro 50,000 go, 000 70,(100 80,000 90,000 92,000 94,000 96, 000 98,000 100,000 102, 000 104,000 106, 000 108, 000 110, 000 112, 000 114, 000 116, 000 118, OUO 120 000 122,000 124,000 126, 000 126,000 130, 000 132,000 134,000 136,000 138,000 140, 000 Inch. 0. .0093 .0193 .0289 .0379 .0470 .0660 .0650 .0735 .0833 .0851 .0871 .0891 .0912 .0933 .0957 .0979 .1002 .1024 .1050 .1077 .1100 .1127 .1157 .1188 .1223 .1259 .1323 .1428 .1510 .1695 .1942 .2030 .2125 .2360 .2478 .2520 Inch. 0- Inch. 0. .0004 Initial load. Scale starts oft ~ After 6 minutes. After 10 minutes. Test discontinued. .0008 .0011 .0026 .0028 .0020 .0020 .0021 .0021 .0021 .0022 .0023 .0022 .0026 .0027 .0023 .0027 .0030 .0031 .0035 .0036 .0064 .0105 .0112 .0156 .0247 .0108 .0075 .0235 .0118 .0012 .0038 .0062 .0108 .0360 .1205 798 STEEL RAILS STEEL RAIL. No. 59. Delano section. . Weight, 81 pounds per yard. Height, 5". * Marks, 5071. Applied loads. Deflections. Sacceasive deflections. Deflection sets. Eemarks. Pounds, 2,000 10, 000 20/000 30, 000 40, 000 ■ 60, 000 60, 000 70,000 80, 000 90,000 92, 000 94, 000 96, 000 98, 000 100, 000 102, 000 104,000 106, 000 108, OOO 110, 000 112, 000 114, 000 116, 000 118, 000 120, 000 122,000 124,000 126, 000 128, 000 130,000 iTich. 0. .00S4 .0193 .0288 .0381 .0472 .0563 .0655 .0751 .0850 .0873 .0892 .0912 .0940 .0960 .()983 .1008 .1034 .1060 .1089 .1123 .1150 .1184 .1225 .1275 .1370 .1460 .1807 .1743 .1925 Inch. 0. Inch. 0. .0004 Initialload. Scale starts oS. Teat discontinued. .0007 .0014 .0022 .0023 .0019 .0020 .0028 .0020 .0023 .0025 .0026 .0026 .0029 .0034 .0027 .0034 .0041 .0050 . 0U95 .0090 .0147 .0136 .0182 .0040 .0074 .0161 * -- .oeps STEEL BAILS. 799 STEEL RAIL. No. 60. McOlare section. Weight, 82.08 poaads per yard. Height, 5". 18. M^rks, 5642. Applied loads. Deflections. Successive deflections. Deflection sets. :^emarks. Founds. 2, <100 10, OOU 20, 000 30, 000 40, 000 50, 000 60, 000 70, 000 80, 000 90, 000 92,000 94,000 96, 000 98, 000 100,000 102, OOO 104, 000 106, 000 -108, 000 110, 000 112, 000 114,000 116,000 ■ 118,000 - 120,000 122, 000 ■ 124,000 126, OOd^ 128.000 130, 000 132,000 134, 000 136, 000 138,000 140, 000 Inch. 0. .0093 .0190 .0282 .0373 .0464 .0649 .0642 .0737 .0833 .0868 .0880 .0900 .0021 .0946 .0976 .0998 .1020 .1048 .1077 .1109 .1138 .1165 .1198 .1240 .1284 .1322 .1370 .1430 .1524 .1640 .1740 .1850 ' . 2040 .2197 Inch. 0. Inch. 0. .0003 Initial load. * ■ Scale starts offi Test discontinned. .0005 .0019 .0031 .0025 .0022 .0020 .0021 .0025 . 0030 .0022 .0022 .0028 . 0029 .0032. .0029 .0027 .0033 .0042 .00(4 .0038 .0048 .0060 .0094 .0116 . 0100 .0110 .0190 .0157 . 0051 .0089 . 0158 .0343 ,0899 800 STEEL RAILS. HARDNESS OF STEEL BAILS. TraDB- verae test num- ber. Mark. Location of cut. Hardness. 53 5115 64 6567 55 5117 56 5621 57 5068 58 5602 59 5071 5642 Original surface of head, one end . . . Original Burface of head, other end. Onginal surface of head, one end. .. Original surface of head, other end. Original surface of -head, one end. . Original surfstce of head, other end. Original surface of head, one end .. Original surface of head, other end. Original surface of head, one end — Original surface of head, other e;id. Original surface of head, one end. . . Original surface of head, other end. Original surface of head, one end. i'' below original surface \" below original surface %" below original surface Original surface of head, other end. J" below original surface \" below original surface I" belo^ original surface Original surface of head, one end. ^" below original surface I" below original surface I" below original surface Original surface of head, other end. i" below original surface \" below original surface I" below original surface 25.73 24. 26* 21.17 S2. 64 26.99 26.99 21.64 21.64 21.64 i2ii.39 21.40 21.17 21.17 25.73 24.83 25.13 21.64 2P.1J7 25.13 25.43 26.99 25.73 25.13 25.13 26.67 25.13 24.26 25.13 • Defective cut. X Lul IE RAILWAY BRAKE-BEAM. 801 BAILWAT BRAKE-BEAM. No. 4290. Transverse Test. Weight of lieam, including shoe-seat castings and brake-rod connec- tion, 82 pounds. Beam supported at ends on oak blocks resting against shoe castings. Loaded at the middle, pulling against brake-rod connections. Applied loads. Deflections. Snocessive deflections, Deflection seta. Ketnarka. Pounds. ' 500 1, 000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 Jl, 000 12, 000 13, 000 14,000 16, 000 16, 000 17, 000 18, 000 19,000 20, 000 ^ 21, 000 22, 000 23, 000 24,000 25, 000 26, 000 27, 000 28, 000 29, 000 30,000 31,000 32,000 35,000 34, 000 35, 000 36, 000 37, 000 38,000 39, 000 40, 000 43, 600 Inch. 0. .0038 . 0098 .0158 .0225 .0310 .0393 .0435 .0503 .0557 .0628 .0681 .0741 .0808 .0880 ,0932 .1003 .1049 .1106 .1170 .1230 .1305 .1363 .1453 .1605 .1552 .1625 .1696^ .1778 .1858 .1927 .2005 .2065 . 2172 . .2261 .2383 .2488 .2630 .2800 .2993 .3180 Inch. 0. .0038 .0060 .0060 .0067 .0085 .0083 .0042 .0067 .0055 .0071 .0053 .0060 .0067 .0072 . 0052 .0071 .0046 , .0057 .0004 .0060 .0075 . 0058 .0090 .0052 .0047 .0073 .0071 .0082 .0080 .0069 .0078 .0060 .0107 .0089 .0122 • . 0105 .0142 .017r .0193 .0187 ''iwh. 0. Initial load. Snapping sounds. Snapping sounds repeated. Ultimate strength. .".'.'.'.'.'".". .0176 .0834 Fractured the brake-rod connection at the bottom of the forked part spanning the beam web. H, Ex. 165 51 802 MISCELLANEOaS STEEL SPECIMENS. ft? 2 to 111 a 1-3 O JL. p. ^3 a;;^ _g" SB's C(M at e ent> go. a i-j -*«rt f^ : : : « • • ■ p< : : : ■8 ; : : ^ . ■ . g B . • • 1 : : : o if : : : « Is M i S*> I ■ ' S ® I ' ' <) 5f-- >iO o Sa.S'^'O —ttb . ; ^ m : : ill "Sl-* vtota lT 00 , Ti! irS ..j "2^ (^ invito ..^ •< R PRO U CO O PS t" a re Koi in^oj It (T wmcfl §00 incoQi Sm rfa« t-oco S >?■■-'■ s 1 _ li IIS M |-' (Tt- toinco tfl -go ooo a ^CD C40 M ";S B o t-i" -^-^tS p ft,-, "-"- Be !■§ iSo ooo ■jj Is 5Sg s si i£ (L^ meom '■§ goo tf>M0O "eO s 1 H oo" eo"o»e3 ft^rt ^_l Is Is 8SS +3 s r ^ .1 <0 (D CO CD • in loioio g a •S r r r r |a saa H cs 08 S n •S a R RAR Mark on speci- men. Ph PhNO «^ °-s H wm-* < |J -MISCELLANEOUS STEEL SPECIMENS. 803 i § O i I i o .8 8 5 C>'£^?f sT"* "^ IISSS®*!!! * * * * ■^ m U3 ^ t.-«u3<0(a CQ CDr] ^(x> :;§ ; >)0 >tO o o ■ i :sp i : : SS i i i'sl . . > S '«> « -rO (>,>. p**-" • EC EC a ! : : a § : li ■ « g HOSCO W wo lAujt^tO Aoocoea o fa 5ja n" a o 1 'o H sf GO <-i CO fc. N eq ■S •-< f-l GO t- QD C- :: IN 04 m (N e CO a ■« 00 00 act- CO oo ilia" lOlO O iM ^e4i?4ff«CO xxxxx J® ©»« t-o»o l! CO oj to in e^ in (^ ca (N i-i « ca N n 2 W.S fl in 'US Sic H.a t-oi o n •-1 1- l> IN CD, ^OOOO OO ^ -^roo o-* CO o S I- (O i-i CO ift w s » ~ . ^ > » S CO to c- oc t- t- o oo o •HOi-HCq coco CM l> CO O OOIAO * m la to ua iQ u? £ coco r- 00 00 o r^i Oi oi O) ai o> at « •<*< •* ■* ^ ^ -v >? goo® n ; ; ; lO o CO o oico o oj m o oi iH rfi N rH O W --* rH W oooooo CO to CO CO t- CO o t- to tH .-(OS CO 00 ooT^■^(^■tJl ■^ ^ ■v mioS CM CMSJmo) « tntot>oo o o ucocptoeoh- CO CO CQ CO CO CO p? CQ crj e? 0? c*j t-oooio in in us CO CQ CQ CO CO + t-t-c- o oo m U3 m iHe,t;:qpQQnfi M^M tCMCO §tH>i]iH .St^t~«oo>T-*t>e>>t-o .«««3lft CO -*-*«« o % II li li li.li ll li li li = SS§SSSiP,SS A -^ C0 OD '^' t-^ d 00 w C4«rH W W^rH o s> V is; oa t-© t-oo^w « h- O 1-1 iH 03 rH -* 1 iH « 1-3 « oi i-i i-i ' s ^ s S uoooeooooo S^ ,bo "•9 M n" P^ (iH •ooooooooo S 2 isi'B"iis"3"s"i 1 O S _ i googooo. ^ sl o-oo-oTcTor-riM- •1 ■V nm T)i mm tn r a< i iig|§g| 1 1 ^ ft, ©-eo"crcD"^-io'eo- H ■^mmeocoMN •-rj , •tV g *"«'" - > A ; r-taot> ■^ lOlOWrH M ^ w-T-i-oa-w" 5 OJNiH rH N ^ «fHrw-i>" i rHf-;i-Jr^ pLtM p : : : : g3 ^ Siii rH m ■5 t- to M -* fi ^1M(N(NM °=ll|f lilj -. COON-^ «w *• mcocort ■g X X X x' C3 ., lOW.-lr-l ■^ t- 1> t- c- J- <( .a ■gi-(rH«iH ' a n fe^K^S' .2 » 5-^ I? ce §1 X Jg^Sg 2 r-i OT rH rA H ^ a' ^SSSS 43 M ft) _gOgOO 1 i Scom-rt-rf- H EH ScQPSWCrS si^g ^0000 « fssss ■a f^i-l 3 t^cotooi S qCQCOCOCO 03 Ah i 1 »s 3 ororoo~o ^ gii .St2§g& -lOin-wm »•!§ f ■• 1 ■i« ^2§gS .2 " ^ • • ■ • 4 . a s >?rtrHrHrH ^ C 1 1 ! fill 5 ^ '1 • 1 tt-t O^i Oi Or-tcg £ !2i^ I eocoe-sm STEEL BARS , ORDNANCE OFFICE, WASHINGTON, D. C. B07 MISCELLANEOUS STEEL SPETOIMENS. 809 SPEOEVEENS TURNED DOWN FROM BARS ".95 SQUARE. No. 4053. Mark, 1. Dianjeter, ".564. Sectional area, .25 square inch. Gauged length, 2". Applied loads. Elongation per inoh. .Successive elongation per iuch. -Permanent set. Successive permanent set. Kemarks. Total. Per square inch. Pounds. 260 1.250 2,500 5,000 7,600 10, 000 11, 250 12, 500 13, 750 15, 000 15, 600 16, 000 16, 500 17, 000 17, 500 18, 000 18, 600 19, OOO • 19,500 20, 000 20,600 31, 000 21, 500 22, 000 22, 600 23, 000 23, 600 24,000 24, 600 25, 000 25, 600 26, 000 26, 600 27, 000 27, 500 28, COO 28,600 29, 000 ^ 29, 500 30, 000 33, 140 Pounds. 1, 000 5, 000 10, 000 20, 000 30, 000 40, 000 46, 000 60, 000 65, 000 60. 000 62, 000 64, 000 66, 000 68, 000 70, 000 72, 000 74, 000 76, 000 78, 000 80, 000 82,000 . 84, 000 86, 000 88, 000 go, 000 92,000 94, 000 96, 000 98, 000 100, 000 102, 000 104. 000 106,000 108, 000 110,000 112, 000 114, 000 116, 000 118, 000 ' 120, 000 132, 580 Inch. 0. . . 000100 . 000250 .000600 .000850 . 001200 . 001400 .001560 . .001800 .001960 . 002000 ^ .01)2050 .002100 .002150 .002250 . O0235O .002400 .002600 .002650 . 002600 . 002660 .002800 . 002900 . 002960 . 003000 . 003050 . 003100 .003160 . C03200 .003260 . 003400 . 003450 . 003500 .003560 . 003750 . 003960 .004050 . 004300 .004400 . 004850 Inch. 0. .000100 ^ .000160 .000230 .000350 .000350 . 000200 . 000160 . 000250 .000160 . 000050 . 000050 . 000060 .000050 .000100 .000100 . 000050 .000100 . 000050 . O0OC6O . 000060 . 000160 . 000100 . 000060 ' .000060 . 000050 . 000050 . 0000.50 . 000050 . 000050 . 000150 . 000060 . 000050 .000050 . 0OO2OO . 000200 .000100 . 000250 . 000100 .000460 > Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile atrength. 0. 0. 0. . ooog6o . 000060 . 000660 . 000500 General summary. Tensile strength per square inch of original section pounds.. 132,560 Blastic limit per square inch of original section do... 118, 000 Elongation per incn after rupture i.. Inappreciable Elongation per inch under strain at elastic limit :inch.. .00440 Keduction in diameter at point of rupture Inappreciable Keduction in area after rupture, per centum of original section Inappreciable Position of rupture ".6 from nenk Charaeterof broken surface .fine granular 810 MISCELLANEOUS STEEL SPECIMENS. No. 4054. Marks, 2. Diameter, ".564, Sectional area, .25 square inch. Gauged length, 2". Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. Successive permanent set. Bemarka. Total. Per square inch. Pounds. 250 1,250 2, 600 5,000 7,500 10,000 .12,600 13, 760 15, 000 15, 500 16, 000 16, 500 17, 000 17, 500 18, 000 18, 500 19, 000 19,500 20, 000 20, 600 21, 000 21, 500 38, 000 23, 500 23, 000 23, 500 24, 000 24,600 25, 000 25, 50C 26, 000 20, 500 27, 000 27, 500 4?, 100 Pounds. . 1,000 5,000 ' 10,000 20, 000 30, 000 40, 000 60, 000 55, 000 60, 000 62, 000 64, 000 66, 000 68, 000 70, 000 72, 000 74, 000 76, 000 78, 000 80,000 82, 000 84, 000 ■ 86, 000 88, 000 90, 000 92, 000 94, 000 96, 000 98, 000 100, 000 102, 000 104, 01)0 106, 000 108, 000 110,000 168,400 Inch. 0. . 000100 .000350 . 000600 . 000950 . 001300 . 001600 001800 . 001950 . 002000 .002050 . 002100 . 002150 . 002300 .002360 . 002400 . 002500 .00251)0 . 002600 .002650 .002750 .002850 .002900 . 002950 .003000 . 003050 . 003100 .003200 . 003350 .003350 . 003400 .003450 .003600 .004900 Inch. 0. .000100 . 000250 .000250 . 000350 .000350 . U00300 . 000200 . 000150 . 000030 .000050 . 000060 .000050 .OOOl.'O .000050 . 000050 .000100 . 000050 . 000050 ^ . 000050 .000100 .000100 .000050 . 000050 .000060 . 000030 . 000060 . oooino .000150 0. .000050 . 001)050 .000150 .001300 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. 0. . 000060 . 000050 . 001250 . 001200 , 6-eneral summary, ^ Tensile atren^h per square inch of original section pounds:- 168,400 Jfilasiic limit per square incli of original section do .. 108,000 l<:li>i)<;tition per inch after rupture inch. . . 010 Elongation per inch under strain at elastic limit do... .003600 Kednction in diameter at point of rupture '. do... .014 Beductionin area after rapture, per centum of original section ' 5.0 Position of rupture : ".70 from neck Cbaracterof broken surface.. granular, flaky STEEL SPECIMENS MIDVALE STEEL COMPANY. Tests for comparison of testing machines. 811 MISCELLANEOUS STEEL SPECIMENS. No. 3918. 813 Marks, MDVSTND. Diameter, ".5G4. Sectional area, .25 square inch. Gauged length, 4". Applied loads. Elongation per incJi. Successive elongation per inch. Permanent set. Successive permanent set. ' Remarks. Total. Per Bqnare inch." Pounds. 250 1,250 2,500 3,750 5,000 ,6, 250 7,500 8,750 10, 000 11, 250 12, 600 Pounds. 1,000 5,000 10, 000 15, 000 20, 000 25, 000 30, 000 35, 000 40,000 45, 000 50,000 Inch. 0. . 000125 .000300 .000426 .000550- . 000700 . 000900 . 001075 . 001223 .001400 . 001575 Inch. 0. .000125 .000175 . 000125 ,.000123 .000150 . 000200 .000175 . 000160 .000175 .000175 Inch. 0. 0. Inch. 0. Initial load. No. 3919. Marks, M D V S T N D. Diameter, ".564, Beotioual area, .25 squareinoh. Gauged length, 4". Applied loads. - Elongation per inch. * Successive eloiigation per inch. Permanent set. Saccessive permanent - set. Bemarks. Total. Per square inch. Poimds. - 260 1,250 2, 500 3,750 1 5,000 6,250 7,800 8,750 ' 10,000 -11, 25c ■ 12,600 Pounds. 1,000 5,000 10, 000 15, 000 ' 20, 000 25, 000 30, 000 36, 000 40, 000 45, 000 60,000 Inch. 0. . 000125 . 000275 . 000400 .000530 .000675 .000875 . 001026 . 001200 .001375 .001550 Inch. 0. .000125 . 000150 .000123 . 000150 . 000125 . OOOliOO .000150 .000175 .000175 . 000175 Inch. 0. 0. Inch. 0. Initialload. - 0. 814 MISCELLANEOUS STEEL SPECIMENS. No. 3920. Marks, M D V S T N D. Diameter, ".564. Sectional area, .25 square inch. Gauged length, 3". Applied loads. Elongation per inch. Successive elongation per incli. Permanent set. Successive permanent set. Bemarks. Total. Per square incli. Pounds. 250 1, 250 2,500 3,750 6,000 6,250 7,600 8,750 10, 000 11,260 12, 600 Founds. 1,000 5,000 10, 000 15, 000 20, 000 25, 000 30,000 35, 000 40, 000 45, 000 60, 000 Inch. 0. . 000100 . 000233 .000433 ■ . 000600 . 000767 .000933 .001100 .001267 .001433 . 001600 Inch. 0. . 000100 . 000133 . 000200 . 000187 . 000167 .000168 .000167 .000187 .000168 . 000187 ■ Inch. 0. 0. Inch. 0. Initial load. - 0. ; No, 3921. Marks, M D V S T N D. Diameter, ".564. Sectional area, .25 square inch. Gauged length, 3"- Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. Snccesslve permanent set. Eemarks. Total. Per Bqnare inch. Founds. 260 1,250 2,600 3,750 5,000 6,250 7,600 8,750 10, 000 11, 250 12, 600 Founds. 1,000 6,000 10,000 15, 000 20, 000 25, 000 30, 000 35, 000 40, 000 46,000 50,000 Inch. 0. .000100 . 000^67 , . 0U0433 .000600 . 000787 . 000933 .001100 .001267 . 001433 .001600 Inch. 0. . 000100 . 000167 .000166 .000167 . 000167 . oooied .000167 . 000167 . 000168 .000167 JjicR, 0. 0. Inch. 0. Initial load. 0. STEEL SPECIMENS TAKEN FKOM THREE BARS OF STEEL FURNISHED BY THE BETHLEHEM IRON COMPANY, SOUTH BETHLEHEM, PA. Alternate specimens tested at Soath Bethlehem, Pa. 815 J^OOceHjOTtJ ef^ O^e-CJurr^jGriAT vt^ Z>ccrts- ^^'-:i i f^tl Pt || , i fX 1 r ^ *- r -Z /a II II .:g x^ I ^-^-^- 1 11^^ II 1!^^ II II .^^ II II ^^ 1 MISCELLANEOUS STEEL SPECIMENS. No. 3944. 817 Marks, ^^' Diameters: End, ".5054; middle, ".5046 ; end. Sectional area, .20 square iucb. Gauged length, 2". '.5052. Applied loads. Total. Per square incii. Elongation per lucli. Suooessire elongation per inch. Permanent Cacoesslvo permanent set. Bemarks. Pounds. 200 1,000 2,000 3,000 4,000 5,000 6,000 6,200 6,400 6,600 6,800 7,000 7,200 7,400 7,600 7,800 8,000 8,200 8,400 8,600 8,800 9,000 9,200 9,400 9,600 10, 000 10, 400 10, 800 11, 200 11, 600 12, 000 12, 400 12, 800 13, 200 13, 600 14,000 14, 400 14, 800 15, 200 15, 600 16, 000 16, 3P0 13, 580 Pounds. 1,000 5,000 10, 000 15, 000 20, OOO 26; 000 30, 000 31, 000 32, 000 " 33, 000 34, 000 35, 000 36, 000 37, 000 88, 000 39, 000 40, 000 41, 000 42, 000 43, 000 44, 000 45, 000 40,000 47, 000 48, 000 50, 000 52, 000 54, 000 56, 000 58, 000 60, 000 62, 000 61, 000 66, 000 68, 000 70, 000 72, OOO 74, 000 76, 000 78, 000 ' 80, 000 81, 950 Inch. 9. . 000100 . 0002SO , 000450 . 000600 .ooo7i;o . 000950 .001000 . 001050 .001100 . 001100 . 001150 . 001200 . 001260 . 001300 . 001350 .001350 . U01400 .001450 . 001450 . 001500 . 001600 . 002P50 . 012750 . 012350 . 014400 . 016460 .018950 . 021250 . 023950 . 027150 . 030500 .osauoo . 038150 . 041950 .017360 . 055100 .0575 .0700 .0800 .1000 .1200 .1960 Inch. 0. . 000100 . 000150 . 000200 . 000160 . 000150 .000200 . 000050 . 000050 . 000050 0. . 000050 . 000050 . 000050 . 000050 . 000050 0. . 000050 .000050 0. . 000050 .000100 . 010750 . 000400 . 000600 .001050 . 001050 . 002500 .J)02300 . 002700 . 003200 . 003350 . 003400 . 004250 . 003800 ~. 003400 .007750 .0024 .0125 .0100 .0200 ,.0200 .0750 Inch., 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. At time of rupture. General summary. Tensile strength per square inch of original section pounds.. 81,960 Elastic limit per square inch of original section do... 45,000 Elongation per inch after rupture iflch- . . 3050 Elongation per inch under strain at elastic limit do... .001600 Eedactionin diameter at point of rupture do-. . .145 -Eeductioninarea after rupture, per centum of original section 49. 1 Position of rupture 1".15 fi'om neck -Character of broken surface fine silky Elongation of inch sections ".41*, ".20 H. Ex. 165 53 818 MISCEtliANEOUS STEEL SPECIMENS. No. 3945. Marks, °l? Diameters: End, ".5047; middle, ".5048; end, ".5051. Sectioual area, .20 square inch. Gauged length, 2", Applied loads. ElongatioD per inch. Successive elongation per inch. Permanent set. SnccessiTc permanent set. Eemarks. Total. Per square inch. Poimds. ' 200 1,000 2,000 3,000 4, OOO 5,000 6,000 7,000 8,000 8,200 8,400 8,600 8,800 9,000 9, 200 9,400 9,600 10, 000 10, 400 10, 800 11, 200 11, 600 12, 000 12,400 12,800 13, 200 13, 6i>0 14, 000 14, 400 14, KOO 15, 200 1.^ 600 16,000 16, 400 16,420 13,800 PoundB. 1,000 5, 000 10,000 15, 01)0 20, 000 25, 000 30, 000 35, 000 40, 000 41,000 42, 000 43, 000 44, 000 4^000 46, 000 47, 000 48, nOO 60, 000 52 000 54,000 66, 000 58. 000 60, 000 62, 000 64, 000 66, 000 68, OUO 70, 000 72, 000 74, 000 76, 000 78, 000 80. 000 82, OllO • 82, 100 Inch. 0. .000100 ' . 000250 . 000430 . 000650 . 000^00 .001000 .001150 . 001300 .0013l'O .001330 .OOUOO .001450 .001500 .001500 .01.?750 . 014050 .015750 .01X050 . 020250 . 0^800 .02.M50 . 028050 .0315-10 . 035000 .039l.iO .044150 . 049250 . 057000 .0600 .0700 .0S50 .1050 .1500 Inch. 0. .000100 .000150 . 000200 . 000200 .oooi.-,o .000200 .000150 .000150 0. . 000060 . 000060 .000050 . 000050 0. .012250 .000300 .001700 .002300 .002200 . 002.'i50 . 002550 . 002700 .003500 . 003550 .004150 . 005"00 ' .005100 . 007750 .0030 .0100 .0150 .0200 .0450 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. At time of fractare. 0. 0. 0. General summary. Tensile Btren^h per square inch, of origina'l section ponuda.. 82,100 Elantic limit per square inch of original section do 46,000 Elonsatiim per inch after rupture inch.. .3000 Elongation per incli under strain at elastic limit do... .001500 Kbdnction in diameter at point of rupture , do... .145 Keduction m areaaf+er inptare, per centum of original section 49.1 Position nf rupture ^. at middle of stem Characlerof broken surface fine silky Elongation of iucb sectiuns ..., , ".29% ".81* MISCELLANEOUS STEEL SPECIMENS. 819 ' No. 3946. Marks, ^-^^^ Diameters: End, ".5654; middle, ".5645; end, ".5654. Sectional area, ,25 square inch. Gauged length, 3". Applied loads. EloDgatinn per inch. Successive elon^tiou per iuch. Permanent sot. Successive permanent set. Eomarks. Total. I'er square inch. Pounds. 230 1,250 2,500 3,750 5,000 6,250 7,500 8,750 10, 000 10, 230 10, 500 10, 750 11, 000 -11,250 11, 500 11, 750 12,000 12, 250 12, 500 13, 000 13, 500 14, OOu 14, 500 18,000 13, 500 16,000 16,500 17, 000 . 17, 500 18,000 18, 500 19, 000 19, 500 20, 000 20,400 16,700 Pounds. 1,000 5,000 10, 000 15, 000 20, 000 25, 000 80, 000 35, 000 40, 000 41, 000 42, 000 43, OCO 44, 000 45,000 46, 000 j 47, 000 48, 000 49,000 50, 000 52,000 54,000 56, 000 58,000 60, 000 62, 000 64, 000 66, OOO 68, 000 70, 000 72, 000 74, OliO 76, 000 78, 000 BO, 000 81, 600 Inch. 0. .000167 .000333 . 000533 .000700 . 000833 . 001067 .001267 .00140* .001433 .001467 . 001500 .001533 . 001567 . 001633 .014333 . 014500 .014U00 .015000 . 016333 . 018833 . 020833 . 023400 . 026167 .0293J3 .033000 . 036500 .040067 . 046667 ;0533 .0600 .0667 .0733 .0933 .1133 .1900 Inch. 0. .000167 . 000166 . 0002UO .000167 . 000133 . 000234 . 000200 .000133 . 000033 . 000034 .00a033 . 000033 . 000034 . 000066 . 012700 .000167 .000100 . 000400 .001333 . 002500 . 002000 . O02.'i67 .002767 .003106 .003667 . 003500 . 003567 . 006600 .000633 .0067 .0067 .0066 .0300 .0200 .0767 Inch. 0. 0. Inch. 0. Initial load. 1 Elasliclimit. Tensile strength. At time of fracture. , 0. . 000067 . 000067 ' General summary. Tensile tit riBngtb per square incli of original section pounds.. 81,600 ElastlRlimit per square inch of origmaV section 1 do... 46,000 Elongation per inch alter rupture : inch... .2667 Elongation per inch under strain at elastic limit do... .001633 Keduction in diameter at point of rupture do... .184 Kednction in area after rapture, per centum of original section 54. 6 Position of rupture ■_, at middle of stem Character of broken surface.. fine silky Elongation of incli sections > ".16, ".46*, 'MS 820 MISCELLANEOUS STEEL SPECIMENS. No. 3947, Marks, \^' Diameters: End, ".5642; middle, ".5642 ; end, ".5643. Sectional area, .25 square inch. Gauged length, 3". Applied loads. Elongation per inch. Successive elongation per inob. Permanent set. Successive periuanent set. Bemarks. Total. Per square inch. Pounds. 250 1,250 3,500 3,750 5,000 6,250 7,500 8,750 10, 000 10, 250 10, 500 10. 750 11, 000 11,250 11, 500 11, 750 12, 000 12, 500 13, 000 13, 500 14, 000 14, 500 lij, 000 15, 500 16, 000 16, 500 17, 000 17, 500 18,000 18, 500 19, 000 19,500 20, 000 20, 500 20, 510 17,200 Pounds, 1,000 5,000 10, 000 15, 000 20, 000 25, 000 30, 000 35, 000 40, 000 41. 000 42, 000 43. 000 «,000 45, 000 46, 000 47, JOO 48, 000 50, 000 52, 000 54, 000 56, 000 58, 000 60, 000 62, 000 64, 000 06, 000 68, 000 70, 000 72, 000 74. 000 76, OUO 78,000 80. 000 83, 000 82,040 Inch. 0. . 000133 .000333 . 000533 . 000700 . 000867 .001067 .001267 . 001467 .001500 .001.';33 . 001567 .001600 .010833 .012667 . 013133 . 013967 .016333 .018267 .020500 .023267 . 026567 .028800 . 031733 . 036233 .040600 .0433 .0500 .0567 .0633 .0733 .0900 .1067 .1600 Inch, 0. . 000133 . 000200 . 000200 . 000167 . 000167 .000200 . 000200 .000200 . 000033 . 000033 .000034 . 000033 . 009233 .001834 . 000166 . 000834 . 002368 .001934 . 002233 ,002767 . 002300 . 003233 . 002933 . 004500 .004367 .0027 .0067 .0067 .0066 .0100 .0167 .0107 .0533 Inch. 0. 0. Inch. 0. Initial load. Elasticlimit. Tensile strength. At time of fracture." . 000033 . 000033 .000033 0. General summary. Tensile strength per square inch of original section ponnds.. 82,040 Elasticlimit per square inch of uriginal section do... 44.000 Elongation per inch after rupture ....inch.. .2767 Elongation per inch under strain at elastic limit do... .001600 lleduction in diameter at point of rupture do... . 174 Kednction in area after rupture, per centum of oiijjinal section 52.2 Position of rupture 1".65 from neck Character of broken surface fine silky Elongation of inch sections ",19 ".47* ".n mSCELLANEOUS STEEL SFECIMElfS. Ko. 3948. Marks, *^j^' Diameters: End, ".5047; middle, ".5048 ; end, ".5051. Sectional area, .20 square inch. Gauged length, 2", 821 Applied loads. Elon{;ation per inch. Siiocessive elongation per inch. Permanent set. SaccesaiTC permanent set. Semarks. Total. Per square iDCll. Foundt. 200 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10, 000 10,200 10, 400 10, 600 10, 800 11,000 11,200 11, 600 12, 000 12,400 12, 800 13, 200 13, 600 14, 000 14, 400 14, 800 15, 200 15,600 16, 000 16,400 16, 800 17,200 17,830 13, 500 Pounds. 1, 000 5,000 10, 000 15,000 20, 000 25, 000 .30, 000 35, 000 40, 000 45, 000 50, 000 51, 000 52, 000 53, 000 54, 000 65, 000 56, 000 58, 000 60, 000 62,000 64, 000 66,000 68,000 70, 000 72, 000 74, 000 70, 000 78,000 80, 000 82, 000 84, 000 86, 000 89, 150 Inch. 0. .000100 . 000300 . 000460 - . 0U0630 .000860 . 001060 .001250 . OOUOO '. 001500 . 001650 . 001700 .001750 . 001800 . 001800 . 007900 . 008750 . 011000 . 012950 . 016000 . 017500 . 020000 .022600 . 025400 .028650 . 032000 . 035230 .040150 . 047900 .0525 .0600 .0850 Inch. 0. .000100 . 000200 .000150 . 000200 .000200 . 000200 .000200 . 000150 .600100 . 000150 . 000050 . 000050 . 000050 .006100 . 000850 . 002250 .001950 . CO2O50 . 002500 . 002500 .002600 . 002800 . 003250 . 003350 .003250 . 004900 . 0077S0 .0046 ' .J)075 .0250 Inch. 0. 0. Inch. 0. Initialload. Elastic limit. Tensile strength. At time of.fractnre. 0. .000050 . 000050 " . General summary. Tensile strength per square inch of original section pounds.. 89,150 Blasticlimit per square inch of original section... ^ do... 54,000 Elongation per inch after rapture inch . . . 285 Elongation per inch under strain at elastic limit do... .001800 Bednctionin diameter at point of raptnre do... . 185- Bednction in area after rapture, per centum, of original section 1 ^ 59. 8 Position of rapture ^ at middle of steih Character oi broken surface fine silky Elongation of inch sections ".27*, ".3d* 822 MISCELLANEOUS STEEL SPECIMENS. No. 3949. Marks, "^ij' Diameters : End, ".5055 ; middle, Sectional area, .20 square inch. Gauged length, 2". .5049 ; end, ".5054. Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. Successive permanent set. Remarks'. Total. Per square iucli. Pounds. 200 1,000 2,000 3,000 4,00(i 5,000 6,000 7,000 8,000 9,000 9,200 9,400 9,600 9,800 10, 000 10, 200 10, 400 10. 600 10, 800 11,200 11,600 12,000 12.400 12, 800 13, 200 13, 600 14, 000 14, 400 14, 800 l.'i, 200 15, 600 16, 000 16, 400 16, 800 17, 200 17, 600 17, 720 13, ;oo Pounds. l.fOb 5,000 10, 000 16, 000 20, 000 25, 000 30, 000 35, 000 40, 000 46, 000 46, 000 47, 000 48, 000 49, 000 50, 000 61, 000 52, 000 53, 000 64, 000 56, 000 58, 000 60, 000 62, 000 64, 000 66, 000 68, 000 70, 000 72, 000 74, 000 76, 000 78, 000 80, 000 f 2, 000 84, 000 86, 000 88, 000 83, 600 Inch. 0. .000100 . 000250 .000450 .000000 . 000800 . 000950 .001100 .001300 .001450 . 001450 . 001500 . 091580 .001550 .001600 . l;01660 . 001700 . 004650 . 007400 . 009060 .011500 .013500 . 01.5000 .018250 . 020700 . 023200 . 025750 . 028650 . 032800 . 036760 .041350 .049100 .0550 .0625 .0850 .1100 .1650 IrCch. 0. .000100 .000150 .000200 . 000160 . 000200 . 000150 .000150 .000200 .000150 0. .000050 . 000050 0. . 0( 0050 . 000050 . 000050 . 002950 . 0OU750 .001650 . 002450 .002000 .002100 . 002050 . 002450 . 003500 . 002560 . 002000 . 004150 . 003950 .004100 . 007750 .0059 .0073 .0226 .0250 .0550 Inch. 0. 0. Inch. 0. Inilialload. Elasticlimit.* 1 r •• 0. . 000060 . 000050 0. — . 000050 Tensile strength. 1 General summary. Tensile strength per square inch of original section pounds.. 88,6(10 Elastic limit per.squave inch of original section do... 52, UOO Elongation per inch, after rapture inch.. .2800 Elongation per inch under strain at elastic limit do... . 001700 Keductionin diameter at point of rupture do.l. .175 Eeduction in area al'tel' rapture, per centum of original section 57. 2 Position of rupture 1".20 from neck Character of broken surface fine silky Elongation of inch sections ".35* ".21 MISCELLANEOUS STEEL SPECIMENS. 823 No. 3950, Marks, \'^' Diameters: End, ".5642; middle, ".5643; end, ".5643. Sectional area, ,25 square inch.' ' Gauged length, 3". Applied loads. Elongation per inch. SaooeesiTe elonfiaiion per inoli. Permanent eet. Successive peTmanent set. Eemarks. Total. Per flqnare laCQ. Pounds. 250 1,250 2,500 3,750 5,000 6,250 7,500 8,750 ID, 000 11,250 11, 500 11,750 12, 000 12, 260 12, 600 12, 750 13, 000 13, 250 13, 500 14,000 14, 500 15,1100 15, 580 16, 000 16, 500 17, 000 17, 600 18,000 18, 500 19, 000 19,600 20, 000 20, BOO 21, 000 21, 500 22, OUO 2", 320 16,900 Founds. 1, 000 5,000 10. 000 15, 000 20, 000 26, 000 80, 000 3,5, 000 40, 000 45, 000 46, 000 47, 000 48, 000 49, 000 50, 000 51.000 52, OUO 53,(iOO 54, 000 56, 000 58. 000 60, OUO 62, 000 64, 000 66, 000 68, 000 70, 000 72,000 74, 000 76, 000 78, 000 80, 000 82, 000 84, OUO 86, 000 88, 000 89, 280 Inch. 0. , .000167 . 0003B7 .000.133 . 000733 . 000900 .001067 .001233 .00(433 .001633 . 001633 .00 607 .00)700 .001733 . 001767 .001800 .00)867 . 002000 .006333 . 008500 .010500 .01J333 . 014600 .0)6933 . 019200 .021733 . 024500 , . 027100 .030667 . 034500 . 038667 . 04167 .0500 .0600 .0667 .0867 .1333 Inch. 0. . 000167 . 0110200 .000166 . 000200 ,O0u)67 .000167 .000166 . 0002UO . 000200 0. . 000034 . 000033 . 000033 . 000034 . 000033 .000067 . 000733 . 003733 .002') 67 . 0U20II0 . 001833 .002267 . 002333 . 002267 . 002533 . 002767 . 002600 . 003567 . 003833 .00+167 .003003 . 00833 .0100 .0067 .0200 .0466 Inch. 0. 0. Inch.. Initial load. Elastic limit Tensile strength. At time of fracture. . 000033 .000033 . 000100 . 000067 Genial summary. Tensile streni^li per square inch of original section pounds.. 89,280 Blaatic limit per square inch of original section do... 52,000 Elongation per inch after rupture inch.. .2400 EluiigatioD per inch under ^train at elaaticlimit do... .001807 Keduction in diameter atpoint of rupture do... .204- Kednction in area after rupture, pec ceutum of original section 59.3 Positiou of rupture - '. 1". 25 from peck Character of broken surface fine silky Elongation of inch frections ^ ".29*, ^30*/M3 824 MISCELLANEOUS STEEL SPECIMENS, No. 3951. Marks, '^^' Diameters: End, ".5643; middle, ".5642; end, ".5642. Sectional area, .25 square inch. Gauged length, 3". Applied loads. Elongation per incli. Snccessive elongation per inch. Permanent set. Successive permanent set. Bemarks. Total. Per square inch. Pounds. 250 1,250 2,500 3,750 • 5, 000 8,760 10, 000 11,250 11, 600 11, 750 12, 000 12,250 12, 500 12, 750 13,000 13, 260 13, 600 14, 000 14, 600 15, 000 15, 500 16, 000 16, 500 17, 000 17, 500 18, 000 18, 500 19, 000 19, 500 20,000 20,500 21,000 21, 500 22, 000 22,220 17,300 Pounds. 1,000 6,000 10, OOO 15, 000 20, 000 25, 000 30,000 36, 000 40, 000 45, 000 46, 000 ■ 47, 000 48, 000 49, 000 50, 000 51,000 62, 000 53, 000 64, 000 66, 000 58, 000 60, 000 62, 000 64, 000 66, 000 68, 000 70, 000 72, 000 74, 000 76, 000 78, 000 80, 000 83, 000 84, 000 86, 000 88,000 88, 880 Inch. 0. . 000100 .000333 . 000500 .000700 .000933 .001167 . 001333 ,001600 .001067 . 001700 .001700 . 001733 . 001767 . 001800 . 001833 . 002000 . 003333 . 006667 . 009000 -■ . 010567 .C12733 . 014667 . 016900 . 010167 . 021667 . 024300 . 027500 .030733 . 034500 . 038667 .0433 .0500 .0567 .0667 .0900 .1233 Inch. 0. . 000100 .000233 . 000167 . 000200 . 000233 . 000234 . 000166 . 000167 .000167 . 000033 0. . 000033 . 000034 . 000033 . 000033 . 000167 . 001333 . 003334 . 002333 . 001667 . 002166 . 001934 . 002233 . 002267 . 002400 . 002733 . 003200 .003233 . 003767 .004167 . 001633 .0067 .0067 .0100 .0233 .0333 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. At time of fracture. . 000033 . 000033 .000100 .000067 General summary, tensile strength per square inch, of original section - pounds.. 88,880 Elastic limit per square inch of original section do... 51,000 'Elongation per inch after rupturo inch.. .2467 Elongation per inch under strain at elastic limit do... .001833 Seduction in diameter at point of rupture do. . . . 204 Iteduction in area after rapture, per centum of original section 59, 3 Position of rupture 1".45 from neck Character of broken surface. , , fine silky Elongation of inch eectioua ".13, ".42*, ".19 MISCELLANEOUS STEEL SPECIMENS. 825 No, 3952. Marks, ^r^' ' 1^10 Diameters: End, ".5500; middle^ ".5496; .2 iv.ch from end, ".5500. Sectional area, .237 square inch. Gauged length, 4". Applied loads. Elongation per inch. Successivf elongation per inch. Permanout set. Successive pormanent set Kemarlis. I'otal. Per square inon. Poundn. 237 1,185 2,370 3,555 4,740 5.925 7,110 8,295 9,480 10, 665 10, 902 11, 139 11,376 11. 613 11, 8.50 12, 087 12,324 12, 561 12,798 13, 272 13, 746 14,220 14,694 15, 168 15,642 16. 116 16, 590 17.064 17, 538 18,012 18,486 18, 960 19, 434 19, 908 20, 382 20, 850 20, 910 16, 100 Pbunda. 1,000 5,000 10. OOO 15, 000 20, 000 25,000 30,000 35,000 40, OOO 45, 000 46, 000 47,000 . 48.000 ^ 49, 000 50, 000 51, 000 52, 000 53, 000 54, 000 56,000 58, 000 60, 000 02, 000 64.000 66, 000 68, 000 70, 000 72,000 74, OOO 76, 000 78, 000 80, 000 82, 000 8t, 000 86, 000 88, 000 88, 230 IjicK 0. .000175 .000375 . 000525 , .000075- .000875 . 001050 .001200 .001350 .001550 . 001575 .001025 . 001050 . 001700 .001725 .001775 . 001825 .002875 . 007675 » 009600 .011125 .013475 . 015750 . 018125 .019900 . 023000 . 023625 . 026375 . 031875 .0360 .0425 .0500 .0575 .0650 .0775 .1050 .1250 7ncA, 0. . 000175 . 000200 . 000160 .000150 . 000200 . 000175 .000160 . 000150 . 000200 . 000025 . 000060 . 00U026 , 000050 . 000025 . 000050 . 000050 .001050 . 004800 ; 001825 .001625 . 002350 . 002275 . 002375 .001775 .003100 . 000625 . 002750 . 005600 .004125 .0075 .0075 .0075 .0075 . 0125 .0275 .0200 Inch. 0. 0. .\. Inch. 0. luitial load. Elastic limit. Tensile atrenglh. At time of fracture. 0. • 0. t 1 1 General summary^ Tensile strength per square inch of orlKinal section pounds.. 8S, 230 Elastic limit per square inch of original section 40... 52,000 Elongation perincli after rupture ._ i«ch., .2300, Elongation per inch under strain at ela-^tic limit..'-.. , do .. .001 825 KeductioD in diameter at point of rupture do... .200 Keduction iu area after rupture, por centum of original section .1. 59. 4 Position of rupture - 2''.40frora week Character of broken surface tine silky Elongation of inch sections ".13/'.37*, ".a0/'.12 826 MISCELLANEOUS STEEL SPECIMENS. Fo. 3955. Maris, ^j^; Diameters': End, ".5505; middle, ".5490 ; end, ".65 iO, tapers rapidly. Sectional area, .237 square inch. Gauged length, 4". < Applied loads. ElongatioD per inch. Sncopssive eloDfration per iDch. Permanent set. Sncoessive permanent set. ilemarks. Total. Per square inch. Povnds. 237 1,185 2,370 3,655 4 740 5,925 7,110 8,-295 9,480 , 10, 665 10, 9U2 11, '39 11,376 [ 11,613 11, 8-.0 12, 087 12, 324 12, 561 12, 798 13. 035 18.272 13. 748 14, 220 14, 694 15, 168 15,642 16,116 16, 590 , 17, 0fi4 17, 538 18.012 18, 486 18 HCO 19. 434 19. 9I'8 20, 382 20, 856 21,330 16,200 Pound*. 1.000 5,000 10,000 16,000 20. 000 26.000 30 000 35, 000 40, OUO 4.3. OUO 46.000 47. 000 48. 000 49. OUO 60, 000 51, 000 52, OliO 53, OOO 54,000 63, 000 66, 000 58, UOO 60, 000 62,000 6t. 000 66. OUO 68.000 70. 000 72, 000 74. 000 76. 000 78,000 8U, 000 8J, 000 84,000 86,000 88,000 90,000 Inch. 0. .000125 . 0U0325 .000500 . 000675 .0U0825 . 001000 . 0111175 . 001325 . 001.5110 .0U1550 .001575 .001625 .001650 .001675 .001725 . 001750 .001775 . 001825 . 0U325U .Cl074>0 .008.-'00 .011250 . 013450 .013700 .017500 .020175 . 02.3000 .020100 . 028625 .03125 .03750 .04375 .O5U0 .0550 .06.30 .0800 .1300 Inch. 0. .000125 .00020U . 000175 .000175 .OOUISO . 000175 .OOU-75 .000150 .000175 .000050 . 00OU25 . OOOuoO . 0U0U2S . 0OUU25 .o.roosn .00UII25 . 00UU25 .0U0O50 .001425 .0U«::0U .001350 . 002450 . OOJ200 . 002250 .001800 . 0021)75 .002825 .003100 .00J.325 .0U2625 . 00625 . 00625 . 0U625 .0050 .0100 .0150 ".0500 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. At time of fracture. 0. 0. ^ 1 General summary. Tensile strengtbper aqnaTeinch of oriffinal section .pounds.. 9f>, 000 Elasiic limit per square inch of origiual section do... 54,000 ElonjraTinn perinrh afier rupture Inch.. .2175 Elon^jatuin per inch uuder strain at elantic limit do... .001825 Keduetion in diameter at point of rupture do... .200 Kednctiou in area after rupture, per centum of original section 59. 4 Position of riipture 2".25 from neck Ghaiacterof liToken surface ^ fine silky Elongation of incli Beotioos ".11, ". 20, ". 43*, ". 13 MISCELLANEOUS STEEL SPECIMENS. Ko. 3954. Marks ^t^' Diameters : End, ".5056 ; middle, ".5046+; end, ".5048. Sectional area.^ .20 square inch. Gauged length, 2". 827 Applied loads. , T^*.! Per square l»*al- Inch. Elongation per Inch. Snooessive elongajMon per inoli. Permanent set. Successive permanent set. Kemarks. Poundt. 200 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9, 000 10, 000 11, 000 12, 000 13, 000 U, 000 14,200 14,400 14, 600 14. 800 15, UOO 16, 200 15, 400 15,600 15, 800 16, 000 16, 400 16, 800 17, 200 17,600 18, 000 18, 400 18, 800 19, 200 19, 600 20, 000 20, 400 20, 800 21, 200 21, 600 22, 000 22, 800 23; 600 24,400 24,410 PoiMidJ. 1,000 5.000 10, 000 15, 000 20, OUO 25, 000 30, 000 35, 000 40, 000 45, 000 60, 000 55, 000 60, 000 65, 000 70, 000 71, 000 72, 000 73, 000 74, 000 75,000 76, 000 77,000 78, 000 79, 000 80, 000 82, 000 84, 000 86, OUO 88, 000 90, 000 92, 000 94, 000 96, 000 98, 000 100,000 102, 000 104, 000 106,000 108, 000 110, 000 114, 000 118, 000 122, 000 122, 050 Inch, 0- , .000150 . 00U300 . 000400 .000550 .000750 .000950 . 001100 .001300 . 001500 .001650 .001850 . 0U20U0 . 002250 .002400 . 002100 .002450 . 002500 .002500 .002550 . 002550 . 002600 .003600 . 008250 . 008750 .OIUIOO . 011600 .013100 . 0147U0 .016650 . 018000 .019750 .021300 .023600 . 0J5500 . 027450 . 030850 . 032600 . 036250 . 040000 . 0500 .0575 .1075 Inch. 0. .000150 .000150 .000100 . 600150 . 000200 . 000200 J 000150 .000200 .000200 , 000150 . 000200 .000150 . 000250 . 000150 0. . 000050 . OOgOSO 0. . 000050 0. . 000050 . 001000 . 004650 . 000500 . 001350 .001500 . OU1500 .0.1600 .0111950 . 001350 . 0U1750 .flulSoO . OU2H00 . 0019. . OOliloO .003410 . 001750 . 003050 . 003750 .0100 .0075 .0500 'Inch, Inch. luitial load. .000050 .000050 Elastiolimit. Tensile strength. General summary. Tensile strength per square inoli of original section pounds.. 122,050 Elastiolimit per square inch of original section do... 77,000 Elongation per inch after rupture inch.. .2050 Elongation per inch under strain at elastic limit do... .002600 Kednctionin diameter at point of rupture do... .135 Seduction in area after rupture, per ceutu^ of original section 46.2 Position of rupture 1". 25 from neck Character of hroken surface fine silky, having serrations radiating from the center Elongation of inch sections ".27*, ".14 828 MISCELLANEOUS STEEL SPECIMENS. No. 3955. Diameters: End, ".5053; middle, ".5049; end, ".5053. Sectional area, .20 square inch. Gauged length, 2". Applied loads. Eloq^atlOD per Inch. Sncoessive elongation per incb. Permanent set. Successive permanent set. Eemarka. Total. Per square inch. Poutids. 200 1,000 2,000 3,000 4,000 5,000 «,000 7, 000 8,000 9,000 10, 000 11, 000 12, 000 13, 000 14, 000 14, 200 14, 400 14, 600 14, 800 15, 200 15, 600 16,000 16,400 16, 800 17,200 17, 600 18, 000 18,400 18, 800 19, 200 19,600 20, 000 20, 400 20, 800 21, 200 21,600 22,000 22, 800 23, 600 24, 360 20, 900 Founds. 1,000 5,000 10, 000 15, 000 ,20, 000 25,000 30, 000 35, 000 40, 000 45, 000 50, 000 55, 000 60, 000 65, 000 70, 000 71, 000 72, 000 73, 000 74, 000 76, 000 78, 000 80, 000 82,000 84,000 86, 000 88,000 90, 000 92, 000 94,000 96, 000 98, 000 . 100,000 102, 000 104, 000 106, 000 108, 000 110, 000 114, 000 118, 000 121, 800 Inch. 0. .000100 . 000300 . 000450 . 000600 .0011800 . 001000 .001150 . 001350 .001600 . 001650 .001850 . 002000 . 002200 ;0P2400 . 002450 . 004500 .006650 . 007000 . 008650 . 010000 .011100 . 012700 .014150 . 015350 . 017000 .018650 . 020260 . 022100 .023900 .026700 . 028150 . I'SOiSO . 032650 . 035550 .040000 , 042250 .0500 .0700 .1200 Inch. , 0. .000100 .000200 .000150 . 000160 . 000200 . 000200 . 000150 . 000200 . 000150 .000160 . 000200 .000160 . 000200 . 000200 . 0011050 . 002050 . 002150 . 000350 . 001650 .0013.50 .001100 . 001600 .001450 . 001200 . 001650 .001650 .001600 . 001850 . 001800 , .001800 .002450 . 002100 . 002400 . 002900 .004450 .002250 .007750 .0200 .0500 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. At time of fracture. 0. . 000050 . 000050 . 000060 0. . ^ General eummary. Tenfiile streDgth persqnare inch of original section. pounds. . 121,800 !Elastic limit per sqnare inch of original section do... 71, 000 Blonsation.per inch after rupture inch.. .2050 Elongation per inch under strain at elastic limit do... .002450 Eeduction in diameter at point of rupture , do... . 115 Beduction in area after rupture, per centum of original section. 40.3 Poaitionof rupture at middle of stem Character of broken surface fine granular, radiating from a silkv spot at circumference ElongatioiL of inch sections ., .' ".25*,",1B MISCELLANEOUS STEEL SPECIMENS. 829 No. 3956. CT, 1*8 Marks, ^^ Diameters: End, ".5654; middle, ".5644; end, ".5655. Sectional area, .25 square inch. Gauged length, 3". Applied loads. Elongation per inch. Successive elongation per luch. Permanent set. Successive permanent set. Eemarks. Total. Pei'squaie" inch. Poundt, 250 1,250 2,600 3,750 5,000 6,250 • 7,500 8,750 ID, 000 n, 250 12, 500 13, 750 15, 000 16, 250 16, 600 16, 750 17. 000 17, 250 17. 500 17, 7.'i0 18, 000 18,250 18, 500 19, 000 19, 500 20, 000 20,600 21,000 21.500 22. 000 22, ."iOO 23, 000 23, 500 24, 000 24, 500 25, 000 23, 500 26, 000 26, 500 27, 000 27, 600 28, 600 29, 500 30,310 23, 900 Pounds. 1,000 5,000 10. 000 15, 000 20, 000 25, 000 30,000 35, 000 40, 000 45, 000 50, 000 55, 000 60, 000 65, 000 66, 000 67,000 68, 000 69, 000 70, 000 71, 000 72, COO 73, 000 74, 000 76, 000 78, 000 80, 000 82,000 84, 000 86, 000 88, 000 00, 000 92, 000 94, 000 95, COO 98. 000 100, 000 102, 000 104, 000 106, 000 108, 000 110,000 114, 000 118. 000 121, 240 Inch. 0. .000167 . 000367 .000533 . 000733 . 000900 .001100 . 001207 .001433 .001600 .001767 .001933 .002100 . 002233 .002267 .002300 . 002333 . 002367 . 002400 . 002483 .002500 . 006300 . 006933 . 00P267 .009733 .010667 . 012167 .013667 .014867 .016433 .018000 . 019533 .021267 .023100 . 025467 .027200 .029300 .032167 .036167 . 038000 .042167 .0567 .0667 .1200 Inch. 0. .000167 .000200 .000166 .000200 . 000167 .000200 .000167 . 000166 . 000167 .000167 . 000166 .000167 . 000133 . 000034 .000033 . 000033 . 000034 ,000033 .000033 .000067 .000038 .000633 . 001334 .001466 . 000934 .001500 .001500 . 001200 . 001566 . 001667 . 001533 . 001734 .001833 ; . 002367 '.001733 .002100 .002867 .003000 . 002833 . 004167 .014533 .0100 .0533 Inch. 0. 0. Inch. 0. Initial loa4. Elastic limit. Tensile strength. -At time of fracture. 0. . 000033 .000033 ' General summary. Tensile strength per square inch of original section pounds.. 121 240 Elastic limit per square inch of original section .^ do... 72! 000 Elongation per inch after rupture ■. inch.. .1733 Elongation per inch under stiaiu at elastic limit : do... .002500 Beduction in diameter at point of rupture do... .134 -Reduction in area after rupture, per centum of original section " •'" 41 9 Position of rnptuie...... at middle of stem -Character of broken surface silky, trace of granulation i serrations radiating from center of bar 'Elongation of inch sections --„.".10 ".33* ".09 830 MISCELLANEOUS STEEL SPECIMENS. No. 3957. Marks, •'j^' Diameters: End, ".5642; middle, ".5642+; end, ".5642. Sectionalarea, .25 square inch. Gauged length, 3". Applied loads. Total. Per square iilcti. Elongation per inch. Saccessive elongation per inch. Permanent set. Successive permanent set. - Kemarks. Founds. 250 1,250 2,600 3, 7.50 5,000 6,250 7,600 8,750 10, 000 11, 260 12, 500 13, 750 16, 000 16, 250 16, 500 16, 750 17, 000 17, 260 17,500 17, im 18 OUO 18, iOO 19,000 19, 500 20, 000 20, .'iOO 21, 0(J0 21, 500 22, 000 22, 500 23, 000 23,500 24,000 ii, 500 2 1,000 25, 600 26, 000 26, 500 27, 000 27, 500 28, 500 2»,500 29, 510 25, 300 Pounds. I 1,000 5,000 10, 000 16, 000 20, 000 • 25, 000 30, 000 36, 000 40, 000 45, 000 50, 000 55, 000 60, 000 65, 000 66, 000 67, OUO 68, 000 69, 000 70, 000 71,000 72, 000 ' 74,000 76, 000 78, 000 80, 000 82, 000 84, 000 86, OUO 88.000 90, 000 92, 000 94, 000 "96, 000 98,000 100,000 102, 000 104, 000 106. UOO 108, 000 110, 000 114, 000 118, 000 118, 040 Inch. 0. .000100 . 000267 . 000433 . 000600 . 000800 .000967 .001167 .001300 .001600 . 001667 . 001833 .002000 .002200 . 002267 . 002300 . 002333 .002367 . 002400 . 006000 . 007233 . 008500 .009767 .011167 .01. -833 . 014200 . 015600 . 017367 .018633 . 0-.'0833 . 022333 . 024600 . 026267 . 029000 .031B33 .034167 . 037500 . 04U933 . 045833 .051333 .0667 .1000 .1200 Inch, 0. . 000100 . 000167 . 000166 .000167 . 000200 .000167 . 000200 .000133 . 000200 .OUO 167 .000166 .000167 . 000200 . 00IJ067 . OU0033 . 0n0033 . 000034 . 000033 . 003600 .001233 . 001267 .001267 . 001400 . 001666 .001367 . 001400 .001767 .001266 . 002200 .0U1500 . 002!67 .001667 . 0U3733 . 002833 . 002334 . 003333 .003433 . 004900 . 005^00 . 015367 .0333 .0200 Inch. 0. 0. Inch. Initial load. Elastic limit. Tensile strength. At time ol' fracture. General aummanj. Tensile strength per square inch of original section pounds.. 118,040 Blasticlimit per square inch of original section do... 70,000 Elongation pur inch after rupture inch.. .1800 Elongation per inch under strain at elastic limit do... .002400 Eeduction in diameter at point of rupture do... .144 Keduction in area after rupture, per centum of original section 44. 6 Posltioffof rupture V.IO from neek Character of broken surface..-.. silky, trace of granulation, serrations radiate from center of bar Elongation of inch sections ".27,* ".17, ".10 M'WGil^LANEOUS STEEL SPECIMENS. 831 c 2S 1 ti .*" a «t- M«®M e>o r^f-J FH^erS'* eS l-i ,H.a SSSIS IslJlsV ss'^V s>'slf ill S=: Si: «£ e : S" : aj bf : XI .g ; +="8 I 3 ^^ : "S « ■ . : 2 . & : IS : *3 ' ■,M"*^_ ■ 2-§.§^ ' O O O O O O O ,n >>o 'O'O'O'a'tf'a mi ^ ii ! :J M : M' -If •«i «.-l— ICON 00 c-i M eo ■* '^ Nmo>» feoft'-tiel 03* i> o oaoj a> j^-^^iam m m lo lOiOtn So , «rf ^ .35 «iaot-t- lOOOb-OOO ioiana fe d o «D r^ 00 00 -dl ■•** CO r-H o* dt^oo pTweQM w C^(M7g(N74ff4 IMCMtHrt "1 rfj' —1 © o « i>eDffa^?at. r-l ~JC4 ^ 73 ecus 00 CO lOiOC-t-0>Q0 Ttl'^lAlO O C3 a" ^ . « ^•s i .jOOOO cooooo OOQO *mo p'**" lA O X X coo *B M3jd ^«O^^JXT4 =. OSO^O tsB gcooo W CX) 04 orodoToo'oo'o" eS^'-^'ao oc CO CO CO oc e> M(MIM.-I ^ia iHiHi-lfH Pi » .2^3. |?§gg oooood o o oo 2 ;: CO oooooo EfO 9 SO o oo o = o oo oo J.S SS l^ssl laioioiAtnS i^-'c^'o" «-r t-t-gJS >< ■,'e3 tS S§£ g O OtO lO 0««»ft COM ooioia •5 TJ 71 W M (M C-l CM Ca (M CJ WIMCTN '"•J 3 ^ -^ + 1 jeow^M t-OlWM 0(D on-*)er inch. Permanent set. Suosessive permanent set. Kemarks. Total. Per sqnate inca. Pounds. 250 1,250 2,500 5,000 7,600 8,760 9,500 9, 760 10,000 10, 260 10,500 10,750 11, 000 11, 600 12,000 12, 500 13, 000 13, 500 14, 000 14,500 15, OUO 15, 500 16,000 16, 600 17,000 17,600 18.000 18,420 Pounds. 1,000 5,000 10,000 20. 000 30, 000 33,000 38, 000 39, 000 40,000 41,000 42, 000 43,000 41, 000 46, 000 48,000 50,000 52, 000 54,000 66, 000 58, 000 60,000 62, 000 64, Olio 66, 000 68, 000 70, 000 72,000 73, 680 Inch. 0. .000100 . 0003U0 .000667 . 001000 .001167 . 001300 . 003167 . 013600 .014000 . 014933 . 015867 . 017167 .019833 . 022600 .026667 .03187 .0333 .0367 .0117 .0500 .0567 .0617 .0683 .0833 .1000 .1267 .2133 Inch. 0. . 000100 . 000200 . 000367 . 00U333 .000167 . 000133 .001867 . 010333 . OOOSOO . 000933 .000934 . 001300 . 002666 . 002767 .003067 .006003 . 00163 .0034 .0060 .0083 .0067 .0050 .0066 .0150 .0167 .0267 .0866 lack. 0. 0, Inch. 0. Initial load. Elastic limit. Tensile strength. 0. . . . General summary. Tensile strength per square inch of original section Ipoands.. 73,680 Elasticlimit per sqaare inch of original section do... 38,000 Elongation per inch after rupture inch.. .2933 Elongation per inch under strain at elastic limit do... .001300 Beduotion in diameter at point of rupture do... .194 Eeduction in area after rupture, per centum of original section 67. Position of rupture 1'.30 from neck Character of broken surface fine silky Elongation of inch sections ".11*, ".30, ".17 842 MISCELLANEOUS STEEL SPECIMENS. No. 3987. Marks, ^^5,^ Diameter, ".564. Sectional area, .25 square inch. Ganged length, 3". Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. Successive permanent set. Eemarks. Total. Per square inuh. Pounds. 250 1,250 2,500 6,000 7,600 8,750 9,000 9,250 9,600 9.760 10. 000 10, 600 11.000 11,500 12, 000 12, 500 13. 000 13, 500 14, 000 14, 500 15, 000 15, .100 16, 000 16.600 17, 000 17, .500 18, 000 18, 370 Pounds. 1, 0(10 5.000 10,000 20, 000 30, UOO 36, 000 36, 000 37, 000 38, 000 39, 000 40, OUO 42, 000 44, UUO 46, 000 48, UOO 60. 000 62, 000 54. 000 56, 000 6H, 000 60, 000 62, OUO 64, 000 66, 000 68, UOO 70, UOO 72, UOO 73, 480 Inch. 0. .000167 . 000333 . 000700 . 001033 .001200 . 001233 .012067 .013333 .014000 .015167 . 017333 .019733 .022400 . .025167 .027633 . 032U00 .035667 . 039667 .044(j07 .0533 .0017 .0667 . 07a3 .0900 .1067 .1400 .2233 Inch. 0. .000167 . 000166 .000367 . 0003.13 .0(10167 . 0U0033 .011434 .000666 . 000667 .001167 .002168 . U02400 . 002667 . 002767 .0026(16 .004107 . 003667 .004(100 . 00500U . 008633 .0084 .0050 .0066 .0167 .0167 . 0333 .0833 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. 0. General summary. Tensile atrengtili per square inch, of original section pounds.. 73,480 Elastic limit per square inch of original section do .- 86, 000 Elongation per inch after rupture , inch.. . JiOOO Elon^atioD per inch underatrain at elastic limit do... .001233 Reduction in diameter at point ot rupture - do... . 184 Reduction in area after rupture, per centum of original section 54. 6 Posh ion of rupture , 1".60 from neck Character of broken surface fine silky Elongation of inch sections , ".24, ".47*, ".19 MISCELLANEOUS STEEL SPECIMENS. No. 4051. 843 Marks, ^^^^o^ Diameter, ".564. Sectional area, ,25 square incli. Gauged length, 3". Applied loads. Snccessive eluDf^atLon per incti. Permaneot set. Successive permanent set. Kemarka. Total. Per square - incn. per inch. Pounds. ibO 1,250 5,000 0,250 7,500 8,750 10, 000 10,250 10, .WO 10,750 11, 000 11, 250 11,500 11, 750 12, 000 12, 250 12, 600 13, 000 13. 500 14, 000 14, 600 15, 000 15, 600 16, 000 16, 600 17, 000 17, 500 18, 000 18, 500 19, 000 19, 500 20, 000 20, 500 21,000 21,500 Pounds. 1,000 6,000 20, 000 25, 000 30,000 35, 000 40, 000 41, 000 42, 000 43, 000 44, 000 45, 000 46, 000 47,000 48, 000 49, 000 60, 000 52, 000 64, 000 56,000 58, 000 60, 000 62, 000 6*, 000 66, 000 68, 000 70, 000 72, 000 74, 000 76, 000 78, 000 80, 000 82,000 84,000 86, 000 Inch. 0. .000133 .000700 . 000867 .001033 . 001167 .001400 . 001433 . 001467 . 001500 . 001500 .001567 .001700 .001767 . 001900 .002133 . 003233 .006>67 . 008567 . 010433 .012667 . 014833 .017067 .019667 . 022333 .025167 . 028333 . 032000 .0367 .0433 ■ .0467 .0567 .0667 .0800 .13.13 Inch. 0. . 000133 . 000567 .000167 .000166 . 000134 . 000233 . 000033 . 000034 .000033 0. . 000067 .000133 .000067 .000133 . 000233 .001100 . 003334 . 002000 .001866 . 002234 . 002166 . 003234 . 002600 . 002066 . C02B34 .003166 . 003667 .0047 .0066 .0034 .0100 .0100 .0133 .0633 Inch. 0. Inch. 0. Initial load. Elaaticlimi*. Tensile strength. 0. 0. Genet^al summary. - Tensile strengtli per sqnare inch of original section poundB.. 86,000 Elastic limit per sqnare inch of original section do... 47,000 Elongation per incli after rupture .. inch.. .2333 Elongation per inch under strain at elastic limit = ..do... .001767 Reduction in diameter at point of rupture ..do... .184 Keduction in areaafter rupture, per centum of original section S4.6 Position of rui^ture 1''.50 from neck Character of broken surface fine silky Elongation of inch sections ",21, ".36*, ".M 844 MISCELLANEOUS STEEL SPECIMENS. m. 4052. Mark, «^// Diameter, ".564. Sectional area, .25 square inch. Gauged length, 3". Applied loads. Elongation per iuob. SucCBSsivo elono:ation per inch. Permanent set. Successive permanent set. Bemarks. Total Per square inch. Pounds. 260 1,250 2,500 5,000 6,260 7,500 8,760 10, 000 10,250 10, 500 10. 750 11,000 11, 250 11,500 11, 760 12, 000 12,250 13, 600 13, 000 13, 500 14, 000 14, 500 15, 000' 15, 500 16, 000 16, 600 17, 000 17. 600 18, 000 18, 600 19, 000 19, 600 20, 000 20, 500 21, 000 21, 500 21, 780 Pounds. 1, OqO 5,000 10, 000 20, 000 25, 000 30, 000 35, 000 40, 000 41, 000 42, 000 43,000 44, 000 46, 000 46. 000 47, 000 48, 000 49, 000 60. 000 62, 0(10 64, 000 66, 000 • 68, 000 60, 000 62, 000 64, 000 66, 000 68, 000 70,000 72, 000 74, 000 76, 000 78. 000 80, 000 82, 000 81, 000 80, 000 87, 120 Inch. 0. .000133 . 0003113 . 000700 . 000000 .001100 . 001207 .001433 . 001467 .00)633 .001[',07 . 001600 .001633 .001700 .001033 . 002707 . 003207 .004100 . 000500 . 0088 13 0101107 .012833 .014607 .0101100 .019107 .021733 .02l.i00 . 027600 .031000 .034833 . 039333 . 0433 .0j33 .0600 .0700 .0367 .1433 Inch. 0. .000133 . 000200 , 000367 . 000200 . 000200 .000167 .0011)1.0 .000031 .000006 . 000034 . 000033 . 000033 . 000007 . 0002.33 . 000834 . 000500 . 00IIK33 . 002400 . 002333 .001834 .002106 . 001834 . 002233 . 002267 . 002506 . 002767 . 003000 . 003600 . 003833 . 001500 . 003967 .0100 .0067 .0100 . 0267 .0466 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. . 000033 . 000033 . 000007 . 000034 General summary. Tensile strength per square incTi of original section pounds.. 87, 120 Blastic limit per square incli of original section do... 46 000 Klongatiun per inch after rupture inch.. .2233 Elongation per inch under strain at clasticlimit do... ! 001700 Eeduction in diameter at point of rupture _ do... . 164 l^duotion in area after rupture, per centum of original section 49. 7 Position of rupture 1".25 from neck Character of broken surface fine silky Elongation of inch sections .. ^ , ..".10 ".23 ".34* MISCELLANEOUS STEEL SPECIMENS. EiNG B. 845 No. 4080. Marks, ^^f^^ Diameter, ".564. Sectional area, .25 square inch. Gauged length, 3"- Applied loitds. Elongation per inch. Successive elougatioii p*r mch. Permanent set. Successive permanent set. Eemarks. Total. Per square iiioli. Pounds. 250 1,250 2,500 6,000 7,500 8,750 10, 000 10, 500 10, 760 11, 000 11, 250 11,500 11,750 '12, 000 12,250 13,500 13,000 13,600 14,000 14, 500 15, 000 15, 500 16, 000 16, 600 17,000 17, 500 18,000 18,500 19,000 19, 500 20, 000 20, 800 21,000 21, 500 21,890 Pounds. 1,000 5,000 10, 000 20,000 30, 000 35, 000 40, 000 42, 000 43, 000 44,000 45,000 46, 000 47, 000 48, 000 49, 000 50, 000 52, 000 54, 000 56,000 58, 000 60,000 62, 000 64,000 66, 000 68, 000 70, 000 72,000 74, 000 76,000 78,000 80, 000 82, 000 84,000 86, 000 87, 560 Inch. 0. .000100 . 000333 . 000733 . 001233 . 0014U0 . 001600 .001633 . 001667 .001700 . 001733 .001867 . 001833 . 002100 . 002433 . 003900 . 006700 .008867 .011000 . 013000 . 014933 .017100 . 019333 . 022000 . 024833 . 027500 . 030833 .034667 . 038667 . 043567 .050000 .060 .067 .090 .140 Inch. 0.' . 000100 . 000233 . 000400 . 000600 .000167 . 000200 . 000033 . 000034 . 000033 >. 000033- . 000134 .000066 . 000167 .000333 . 001467 . 002800 . 002167 . 002133 .O02.,0 .001933 . 002167 . 002233 . 002067 . 002833 .002667 . 003333 . 003834 . 004000 . 004900 . 006433 .010 .007 .023 .050 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. * . 00006T . 000067 . General summartf. Tensile strength per square inch of origiual section pouncis.. 87,560 Elastic limit per squnru inch of origiual section do... 45,000 Slongation per iocu after rupture. inch. . .2300 EloDgatioD per inch nndcr strain at elastic limit.. do... .001733 Kednctionin diameter nt point of rupture ..do... .184 Bednction in area after rupture, per centum of original section 54.6 Position of rupture , '. 1".70 from neck Character of broken surface fine silky Elongation of inch sections ",15, ".42*, ".12 846 MISCELLANEOUS STEEL SPECIMENS. No. 4081. Marks, ^^°|? Diameter, ".564. Sectioual area, .25 square inch. Gauged length, 3". Applied loads. Elongation per inch. SncceaslTe elongation per incli. Permanent set. Successive permanent set. Eemarks. Total. Per sqnare inch. Pounds, 250 1,250 2,500 5,000 7,500 8,750 10, 000 10, 600 10, 750 11, 000 11, 250 11, 500 11,750 12, 000 12, 250 12, 500 13, 000 13, 500 14, 000 14, 500 15, 000 15, 600 16, 000 16, 500 17, 000 17, 500 18,000 18,500 19, 000 19,500 20, 000 20, 600 21, 000 21,500 22,000 22, 050 Poundt. 1,000 5,000 10, 000 20, 000 30, 000 35, 000 40,000 42, 000 43, 000 44, 000 45, 000 46,000 47,000 48, 000 49, 000 50, 000 52, 000 64, 000 56, 000 58, 000 60, 000 62, 000 64, 000 66, 000 68, 000 70, 000 72, 000 74,000 76, 000 78, 000 80, OOJ 82, 000 84, 000 86, 000 88, 000 88, 200 Inch. 0. . 000067 . 000267 . 000600 . O0U933 .001100 . 001267 .001333 .001367 . 001433 . 001567 .001667 .001933 . 002800 . 003600 .004667 .006667 .008667 . 010567 .012333 . 014500 .016700 .019000 .021167 .023667 . 026667 . 029667 .032900 . 036667 .04l.'i00 . 047000 .055833 . 060633 .079167 .110 .133 Inch. 0. . 000067 . 000200 . 000333 .000333 . 000167 .000167 .000066 . 000034 . 000066 . 000134 . 000100 .000266 . 000867 .000800 .001067 . 002000 . 002000 . 001900 . 001766 .002167 . 002200 . 002300 .002167 . 002500 . 003000 . 003000 .003233 . 003767 . 004833 . 005500 . 008833 .004800 . 018534 .030833 .023 Inch. Inch. 0. Initial load. Elastic limit. Tensile strength. 0. . General summary. Tensile streogth per square inct of original section pounds.. 88,200 Elastic limit per square incli of original section do... 44,000 Elongation perinea after rupture inch.. .2330 Elongation per inch nader strain at elastic limit do... . 001433 Keductionin diameter at point of rupture do... .164 Keduction in area after rupture, per centum of original section 49.7 Position of rupture at middle of stem Character of broken surface fine silky Elongation of inch seotiona ".13, ".42*, ".16 miscellaneous steel specimens. Piston. 847 Ifo. 4082. Marks, ^if^ Diameter, ".564. Sectional area, .25 square inch. Gauged length, 3". Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. Successive permanent set. Remarks. Total. Per square IBQU. Pounds. 250 1,260 2,500 6,000 7,600 8,750 10,000 11,250 12,500 12, 750 13,000 13,250 13,500 13,750 14, 000 14.250 14, 500 15,000 15,500 16, 000 16,600 17,000 17, 600 38.000 18, 600 19, 000 19, 600 20, 000 20, 600 21, 000 21, 500 2i, OUO 22, 6u0 23, 000 23,600 24,000 24,500 25,000 25,010 Pounds, 1,000 6, 0(10 10, 000 20, 000 30, 000 35, 000 40, 000 46,000 60,000 51, 000 52, 000 53, 000 54, 000 55, 000 56, 000 - 57, 000 68, 000 60, 000 62, 000 64,000 66, 000 68, 000 70, 000 72. 000 74,000 76, 000 78,000 80,000 82, 000 84,000 86, 000 88, 000 90, 000 92,000 94, 000 96,000 98, 000 100, 000 100, 040 Inch. 0. .000100 . 000267 .000600 .000933 .001067 . 001233 . 001400 .001600 .001633 . 001667 .001700 .001733 .001767 .001933 .002267 . 002933 .005000 . 007167 . 008«33 . 010667 . 012600 . 014600 .016600 . 018833 . 020667 . 023033 . 025600 . 028300 . 031333 .0348!3 .038667 .043333 .049167 .033833 .0700 .0H67 .1200 Inch. 0. . 000100 .000167 . 000333 . 000333 .000134 .000166 .000167 . 000200 . 000033 .000034 . 000033 . 000033 .000034 . 000166 .000334 .000666 . 002067 .003167 .001666 .001834 .001933 . 002000 .001900 . 002333 . 001H34 . 002366 .002567 . 002900 . 002833 . 003500 . 003H34 .004666 .00.834 . 006666 . 014167 .0167 .0333 Inch. 0. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. 0. Qeneral summary. Tensile strength per square Inch of original section pounds.. Elastic limit per square inch of original section - .do... ELiugation per inch after rupture inch.. El <- :7"ft K^' -> -•Zif A3 >to -7 HEx../^^„_..51 2 MISCELLANEOUS STEEL SPECIMENS. 851 No. 40il. Marks, ^i Diameter, ".505. SectioDal area, .20 square inch. Gauged length, 2". Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. Successive permanent set. , Bemarks. Total. Per square inch. Founds. 200 1,000 2,000 3,000 4,000 6,000 6,000 6,200 6,100 6,600 6,800 7,000 7,200 7,400 7,600 7,800 8,000 8,100 8,800 9,200 9,600 10, 000 10,400 10, 800 11,200 11,600 12, 000 12, 100 12, 800 13, 200 13, 600 14, 000 14,400 11,800 16, 200 15,600 16,000 16, 100 16, 800 17, 200 17,600 18,000 18,400 18, 800 19,200 20, 000 20,800 21,600 22, 180 Founds. 1,000 5,000 10, 000 15, 000 20, 000 25, 000 30, 000 31, OOO 32, 000 33, 000 31,000 35, 000 36, 000 37, 000 38,000 39, 000 10, 000 12, 000 11, 000 16, 000 18, 000 50, 000 52, OOO 51, 000 56, 000 58, 000 60, 000 62, 000 61,000 66, 000 68, 000 70, OOO 72, 000 71, 000 76, 000 78, 000 80, 000 82, 000 84,000 86, 000 88, 000 90, 000 92, 000 91, 000 96, 000 100, 000 101, 000 108,000 110, 900 Inch. 0. . 000100 .0003.50 . 000500 ■ .000700 . OO09OO .001050 . 001100 . 001150 . 001250 . 001400 . 001600 . 001800 . 002000 . 002450 . 002700 . 003200 . 003700 . 003950 .005100 .005900 . 006900 . 007750 .008600 . 009400 .010360 .011200 .012100 .013000 . 014000 .015160 . 016260 . 017550 . 018800 .020000 . 020900 . 022400 . 023700 .025500 . 026750 .028250 . 030350 .032000 . 034250 .036260 .010 .015 .050 Inch. 0. .000100 .000250 . 000160 . 000200 . 000200 .000160 .000060 .000060 .000100 . 000150 .000200 . 000200 .000200 . 000460 . 000250 . 000500 .000600 . 000250 .001150 . 000800 . 001000 . 000850 . 000850 . 000800 .000950 . 000850 .000900 . 000900 .001000 . 001160 .001100 .001300 .001250 .001200 .000900 . 001500 . 001300 . 001800 . 001250 .001600 . 002100 .001650 .002250 .002000 . 003750 .005 .005 Inch. 0. Inch. 0. Initial load. Elastic limit. Tensile strength. ] . 000100 .000100 .001050 . 001560 General summary. Tenailefltrengtliper square inch of original section ponrds.. 110,900 Elastic limit per sqnareinch of original section , .do... 33,000 Elongation per incQ after rupture.- inch.. . 0(5 Elongation per inch uuder strain at elasticlimit - do... .001260 KednctioD in diameter at point of rupture do... .015 Hednctionin area after rupture, per centum of original section - 5.7 Position of rupture ^ ".95 from neck Character of broken surface granul ar Elongation of inch sections ".09/'.01 852 MISCELLANEOUS STEEL SPECIMENS. No. 4042. Marks, jfo Diameter, ".505. Sectional area, .20 square inch. Gauged length, 2". Applied loads. Elongation per moh. Suooessive elongation per inch. Permanent vset. Succeflsive permanent her. Eemarks. Total. Per square inch. Faimdt, 200 1,000 2,000 3,000 4,000 5,000 6,000 6,200 6,400 6,600 6, 800 7,000 7,200 7,400 7,600 7, 800 8,000 8,400 8,800 9,200 S, 6i,0 10, 000 10, 400 10. too U, 200 11,600 12, 000 ~ 12,400 12, 800 13,200 13, 600 14, 000 14, 400 14,800 16, 200 15, 600 16, 000 16,400 16, 800 17, 200 17, 600 18, 000 18,400 18, 800 19, 200 19, 600 20, 000 22, 040 1,000 5,000 10, 000 15, 000 20, 000 25, 000 30, 000 31, 000 32, 000 33, 000 34,000 35, 000 ' 36,000 37, 000 38, 000 39, 000 40, 000 42 COO 44, 000 40, 000 48, 000 50, 000 62, 000 54, 000 . 66, 000 58, 000 60, 000 02, 000 64, 000 66, 000 68, 000 70, 000 72, 000 74,000 76, 000 78, 000 80, 000 82, 000 84, OOO 86, 000 88, 000 90, 000 92, 000 91, 000 96, 600 98, 000 100, 000 110, 200 Inch. 0. .000100 . 000350 . 000500 . 000700 . 000850 . 001050 . 001160 . 001260 . 001350 . 001450 . 001700 . 002000 . 002260 . 002500 . 002900 . 003400 . 004030 .004900 .005500 . 000600 . 007300 . 008200 .009100 . 010000 .010900 .012000 .012900 . 014000 . 016000 .016000 . 017000 . 018360 .019260 . 020900 .021750 .023600 . 024850 . 026350 . 027850 . 029600 .031500 . 033300 . 036000 . 038750 . 041260 .044300 Inch. 0. . OOOIOO . 000250 .000150 . 000200 . 000150 • .000200 .000100 .000100 .000100 . OOOIOO . 000250 . 000300 . 000260 . 000260 . 000400 . 000600 . 000660 .000860 . 000000 . 001000 . 001000 . 000700 .000900 . 000900 . 000000 .001100 . 000900 .001100 .001000 .001000 . 001000 .001360 . 000900 .001750 . 000850 .001750 .001350 . 001500 .001600 . 001650 . 002000 . 002000 . 002500 . 002750 . 002500 . 003060 Inch. 0. Inch. 0. luiLial load. Elastic limit. Tensile strength. .000050 .66005G' .001900 . 001,850 General summary. Tensile strength per Bqaare inch of original section pounds.. 110,200 Elastic limit per square inch of original section do... 34,000 Elongation per inch after rupture im h!". « !o70 Elongation per inch under strain at elastic limit do.!! .001450 K,eductiou in diameter at point of rupUire do..! ' .015 Keduction in area after rupture, per centum of original section '! '5 7 Position of rapture ".TO'fromnecfc Character of broken surface , grauulai Elongation of Inch sections *- !!!!.!!!!". U7* ".07 MISCELLANEOUS STEEL SPECIMENS. 853 JSo. 4043. Marts, t,"m Diameter, ".505. Sectional area, .20 square inch. Gauged length, 2". Applied loads. Total ^"^^ S1"ar6 Elongation per inuh. Successive elongation per inch. Permanent set. Successive permanent set. Kemarks. Pmmda. 200 1,000 2,000 3,000 4,000 5,000 6,000 6,200 6,400 0, 600 6,800 7,000 7,200 7,400 7,600 7,800 8,000 8,400 8,800 9,200 9,600 10, 000 10, 400 10, 800 11,200 11, 600 12, 000 12, 400 12, 800 13, 200 13, 600 14, 000 14, 400 14, 800 15,200 15, 600 16, 000 16, 400 16, 800 17, 200 17, 600 18, 000 18, 400 18, 800 19, 200 19, 600 20, 000 21, 620 Founds. 1,000 5,000 10, 000 16, 000 20, 000 ■ 25, 000 30, 000 31,000 33, 000 33, 000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 42, 000 44,000 46, 000 43, 000 50, 000 52, 000 54, 000 56, 000 58, 000 60, 000 62, 000 64, 000 66, 000 68, 000 70, 000 72, 000 74, 000 76, 000 78, 000 80, 000 82, «00 84, 000 86, 000 88, 000 90, 000 92, OOO 94, 000 96, 000 98, 000 loo, 000 107, 600 Inch. 0. . 000100 .000350 . 000500 . 000600 . 000800 .001100 .001150 .001200 .001350 . 001450 . 001600 .001900 . 002150 . 002450 . 002850 . 003100 . 003900 . 004750 . 005600 . 006400 . 007400 .008350 . 00?000 . 009900 . 010850 .012000 . 012900 . 013750 . 014900 . 016000 . 017000 . 018230 . 019400 . 020600 . 022000 . 023350 . 024900 . 026400 . 028350 .020750 . 031500 . 033900 .036300 . 038760 . 042000 . 045500 Inoh. 0. . 000100 . OOD250 . 000150 .000100 . 000200 . 000300 . 000050 .000050 . 000150 . 000100 . 000150 . 000300 .000250 .000300 . 000400 .0002.90 .000800 ■.O00C50 , . 000850 .OOOSOO .001000 . 000950 . 000850 . 000000 . 000950 .001150 . 000900 . 00(1850 . 001150 . OOUOO . 001000 . 001250 .001150 .001200 . OOMOO ' .001350 . 001550 .001500 . 001950 . 001400 . 001750 . 002400 . 002400 . 602450 . 003250 . 003500 Inch. Inch. Initialload.' Elastic limit . 001700 . 001650 Tensile strengtli. General summary. Tensile strength per sqnare inch of original section pounds.. 107,600 Elastic limit per sqnare inch of original section do... 35,000 Elongation per inch after rapture inch.. .060 Elongation per inch under strain at elastic limit do... .001600 Eeductlonin diameter at point of rupture do... .015 Beduction in area after mptnxe, per centum of original section 5.7 Position of rupture ".60 from neck Character of broken surface h. granular Elongation of inoh sections — ». ".06, ".OS 854 MISCELLANEOUS STEEL SPECIMENS. No. 4044. Marks, t^^^ Diameter, ".505, Sectional area, .20 square inch. Ganged length, 2". Applied loads. Elongation per inch. Successive elongation per inch. Permanent set. Successive permanent sot. Eemarks. Total. Per square iuch. Poimds. 200 1,000 2,000 3,000 4,000 S 000 6,000 6,200 6,400 6,600 6,800 7,000 7,200 7,400 7,600 7,800 8,000 8,200 8,400 8. fiOO 8,800 9,000 9,200 9,400 9,520 Pounds. 1,000 6,000 10, 000 15, 000 20, 000 25, 000 30, 000 31,000 32, 000 33, 000 34, 000 36, 000 36, 000 37, 000 38, 000 39,000 40, 000 41, 000 42, 000 43, 000 44, 000 46, 000 46, 000 47, 000 47, 600 Inch. 0. .000100 .000250 . 000450 .000600 . 000850 .001060 . 001100 .001160 .001200 .001250 .001350 . 001400 . 001450 . 001500 . 001550 . 001600 . 002000 . 003250 . 005400 . 006500 . 007400 . 008360 . 009400 Inch. 0. . 000100 .000150 . OC0200 .000150 . 0002.50 . 000200 . 000050 . 000050 .000060 .000050 .000100 .000050 . 000050 .000050 • .000050 . 000050 .000400 .001250 . 002160 .001100 . 000900 . 000950 . 001050 Inch. 0. Inch. 0. Initial load. Tonsile strength. 0. . 000100 .000100 General summary. Tensile strength per square inch of original section pounds.. 47,600 Elastic limit per square inch of original section do... 40, Oi)0 _ Elongation per inch after rupture inch . . . 005 "Elongation per inch under strain at elastic limit do.., .001600 Keductionin diameterat point of rupture inappreciable Position of rupture ".45 from neck Character of broken surface 40 per cent, granular, 60 per cent, spongy. The spongy metal varied in color from light blue to doll leaden color. MISCELLANEOUS STEEL SPECIMENS. 855 No. 4045. Marks, ^fii Diameter, ".505. Sectional area, .20 square inch. Gauged lengtli, 2". Applied loads. Elongation per inch. Successive elongation per inch. Permanent set, - Successive permanent set. Eemarks. Total. Pounds. 200 - 1, 000 2,000 3,000 4,000 6, 000 6,000 6,200 6,400 6,600 6,800 .7,000 7, 200 7,400 7, 600 7,800 7,980 Per square inch. Pounds. 1,000 B, 000 10, 000 15, 000 20,000 25, 000 30, OOO 31,000 32, 000 33, 000 34,000 36, 000 36, -OOO 37,000 38, 000 39, 000 39, 900 Inch. 0. .000100 . 000350 .000500 . 000700 . 000850 .001050 001050 . 001100 .001100 .001150 .001200 .001300 . 00 ',350 . 001400 .001550 Inch. 0. . 000100 . 000250 .000150 .000200 .000150 . 000200 0. . 000050 0. .000050 .000050 . 000100 . 000050 . 000050 . 000150 Inch. 0. Inch. 0. Initial load. Tensile strength. 0. General aummai-j/. Tensile strength per square inch of original section pounds . . 39, 900 Elongation per inch after rupture inappreciahle- Eednction in diameter at point of rupture inappreciable Position of rupture ■ atneolc Character of broken surface granular, 30 per cent.; flaky and spongy, 70 per cent 856 MISCELLANEOUS STEEL SPECIMENS. Marks,' ^^j, Diameter, ".505. Sectional area, .20 square inch. Length of stem, 1". Tensile strength, 6,610 pounds = 33.200 pounds per square inch. Fractured ".35 from neck. Appearance of fracture, granular; 30 per cent, of Surface dull spongy. Cylindrical surface of specimen showed spongy metal. Marks, j^o Diameter, ".505. Sectional area, .20 square inch. Length of stem, 1". Tensile strength, 5,160 pounds=25.800 pounds per squnre inch. Fractured ".2 from neck. Appearance, granular, 30 per cent.; balance of fracture oblique across stem and had a dark-colored, spongy appear- ance. Cylindrical surface of specimen showed spongy metal. No. 4046. Marks, l^m Diameter, ".505. Sectional area, .20 square inch. Gauged length, 1". Applied loads. Elongation per inch. Successive elongation per incli. Permanent set. Successive permnneut set. Eemarlcs. Total. Per square inch. Poundt. 200 - 1,000 2,000 3,000 4, 000 5,000 6,000 6,200 6,400 6,600 Founds. 1,000 5,000 10, 000 * 15,000 20, 000 25, 000 30, 000 31, 000 32, 000 33, 000 Inch. 0. .0001 .0002 .0002 .0004 .0012 .0021 .0023 .0026 .0033 Inch. 0. .0001 .0001 0. .0002 .0008 .0009 .0002 .0003 .0007 Inch. 0. Inch. ' 0. Initialload; Elastic limit, approxi- mate. Tensile strengtli. .0005 ,.0005 Fractured ".2 from neck, spongy, 60 per cent. Appearance, dull granular, 40 per cent.; MISCELLANEOUS STEEL SPECIMENS. 857 5 M WOJi-i 1 rHOiH, ji 5 « in-o-^ ^ iHr^S .5 ^ C- lO^ fO 1*1 ■^ iH r-J— nH CM ^ »g *" mV""^' c.S = «* •Bl < '-' CNCC'm" COO) (MO) S a ». I— 1 fOr-CJ C.1,-4N rH U * 1 JXCJO ,£s?.&os /•=? 1^ - - V '_■-'-' » \ t = 2~ =■ sss ssss i 9 » « few ogl ' (S s iio co lo'cooJos □6 ei fe-' A S iMOaNM d >» IM SS S •2 J ■l-S la 1.S u sbM jotoiat t- OS 1^00 t> 1^ ^(M , Mr-V3? H ^ rd f . 4^ OOO OOOCt o OSirtnO CO-*-*^ CO ■ 61 OS-JHO (O'^WCO CO &i U CO P. 00 (c« OCO 0030 O c9 1* «>•*£» M»soai t- i c3 «J«iO ■^03 — 03 "* .S S ' sod" t- O'O (N 7<1 t> to CO g MMM NWrHH rH la's OOO OOOO o si-s lOincsi ©oocoo 00 43 PHg„S 12 iftco'o" co-oTt-ToT oo" 's t-t-oo usm-^TH -^ O ta R, 'S GSO ooo oooo o 3 ■3 1 "SS CM -H rfl 'H ^- (0 t~ rH S i-*" ■^'ifTeo" -rf-^^e^ n" M(MM r-lr-frHi-l rH ..^ , ^« 00iW WMM NMM MMN ««C 03 03 O O 0) O) p^cicio oso^o) Oi oi Oi o» o> oi 030}o> 00103 o>oio> ooo aoDoo ff^ncQ eqc O A ooo 03 03 Oi 03 Oi 33 boos noes )U tSiOO !3a«> Qau OfOu SpOu Oau Sau t^Au •«o 868 ENDURANCE OF ROTATING SHAFTS. cam caiMCM iHMw Mr-i^ ^-H 'rj'ij !:?r:'r:J ir'::^ !z!i:! n^^S ^ OO OOO coo O^^ OO O^ C=30 oo o^ ooo « OO coo C= O ^ ooo O 0> O Oi O O C3 C3 O OO CiOO g OO oi o o ooo c;oo oo cs lo qoo oo oo ooo So o'' o o'" o (Otoe- ^-rf-f" TfTf"-^ Oi-lfH OOiH OOO OOO ■-IM-)' — Ol-H or-CO l—i>-t> 000000 000000 osojo) ootcj oioo coo ooo ooo ooo ,r-l--rH ^^rH — rH^ .-'—.—1 rti-(^ — -|-ri CITIr-l WMri (TltM-M W'TJ'M rfiooo ooo ooo ooo ooo ooo coo ooo ooo ooo 1 ■ ill OOO! ill Mcoeo O O! o OJOO)> OOIO Sgg OSOCi ill OJOOS ill essoin .r-ti-l ft ,< OS 00 00 th CO m nco-^ CM o o) iM^-oi T*05«> oocoob □00000 000000 ooxoo ooocoo i>t-ir- c-r-c- t-t^c- t^i-t- r-h-t- Cl — -Hf < o o o CO Tfi -* tH-tH -* Oi Oi O a Ui Oi C! O O 0> O) C3 O c; o M Tjt ■># -^i" "Cjt-^d a Oi Oi O) o> Oi 03 03 O) O) Oi Oi Srfi « Grfs c eio « e-o < c^A o 6a u a ^ s H ou S^oq !SrOu !Sfou €au Sao cSav 870 ENDURANCE OF ROTATING SHAFTS. m M g C4 ^w Mf-I(M -^MCO 000 000 s 000 000 000 000 hi; • . . * * ■ >- £ ^^^ t-OlOl CO to in ■^C31M (M,-(tH o to rf-OOO 000 000 000 000 000 ^ P •S „^^ «iMCO moec -#«M COMM OD ■S3SS S32 OCiOS CJ03 23S SS3 sss 5 ^ . . . . . . . . . t2 ' to IOT*lO ^fflffl ID ■3 ri tH iH i-H r-*i-( tH T-i I— 1 rMi-iiH ►? 9 |3 g o a> ' ^ 1^ a e,a « 8rf3 « Sa •» e,o « C3a e^o Srfi w Qa u Qa u SrO fl <=> 5 0- 0- cs- s H >-( iH iH w rH C3 CM t-iOOj OOO ' ggg 03 03e» ill ill "iHrH ill rH t-Hi-l rlrHrt ill ill iii sss 2SS sll agoocD i-liHi-t ill dOOO coco w MOO CO ggs ill sis isi sss ^ ill oi>o ill ilg ilg 111 SS3 ooo III ssg Qa o Sa « Qa o @iO o Qa u Sa u Sao Qa u Qa o Sao 8a u Sa u Sao 872 ENIUIRANCE OF liOTATING SHAFTS, . M •-'M COi "di"*^ ONh- aim at to CD C- t^iSlOO OOOiOi OOO O t— o ooo ooo ooo o o o l-< ^1 w 00t^>-H C-IOOO F-fOtM intocD CO cs iTs >• ! i 8« o I 330, ono 330,000 830,410 10, 000 410 o s 2 874 ' ENBUEANCE OF ROTATING SHAFTS. Test No. 32.— 0. H. Steel from Bod No\ 1. A constant load was employed throughout the test, giving the maxi- mum fiber stress 53,000 pounds per square inch. The shaft acquired a higher temperature while running, and was cooled with water prior to measuring the deflections and sets following the run of 5,000 turns. The tensile specimen showed an elastic limit of 51,000 pounds per square inch. The metal in the rod from which this shaft was taken showed yielding and increased elongation under diminished loads after the elastic limit was passed. The rotating test was discontinued before rupture of the shaft was completed, about 20 i)er cent, of the sectional area remaining intact, which showed a line granular appearance when broken over the anvil. The appearance of the metal ruptured while under rotating test was similar to the fracture of test No. 31, the surface having a smooth, battered appearance. ENDURANCE OP ROTATING SHAFTS. 875 <& ^ ^4 « ■*^ e3 ^ A -«3 ■g -O « *a o o U i ^ ' i (-• d s i' a M J Si 11 1 E H M ^^^/ wooo ooiin t><»r-l OOM t<- <9U3M ffiCOOO COlOO •-(00 t-t-t- ffl-^-* coo CO t, ^ ^rH rH f-l r-l rl^rH i-H(Mr-i MClfH a .2 "3 h? ■ • • "S t= i TS T i ■ Wo CO P'SSK «*t-T»« oooo OSMOO -M O CD CO « lO eo^ 09 COCIQO . O ^- »H I— 00 CO CI om ggs mczc CO ^91 h ^ca-jso inimo If! in in inmift Munin -^ioS O r-,PHi~t r-i r-ii-H 1-1 i-HrH to ■s ... ^^ • • * M I-) ( B hi 1 t>0 tH wi-teo MtDffa «ooin •>#(MCO CO-^ 0> Tt< Ift t- «b-nn l>^rjl ti .Oioo mw.H OM >0 OOC- .CDTO-cH CO Oi O^ 1 rfiojoo ooo ^ OO O-hO ODIM O CM(M!M "MM i-T T-J" t-i" r<" T-T m m- >iO' « )Zi ' a* g£ • o j: ' =8 «50 Co t3o a. "« 876 ENDURANCE OP ROTATING SHAFTS. Test ]Sro. 33.^0. H. Steel from Hod No. 1. The conditions of test were the same in this experiment as with shaft No. 32, and the endurance under test nearly the same ; the total num- ber of rotations being 23,850 for this shaft, against 23,10Cf for the former. The metal was ruptured on opposite sides of the shaft, the test being discontinued, leaving 40 per cent, of the sectional area intact. When finally broken across the anvil the different parts of the frac- tured surface presented the characteristics previously noted. ENDURANCE OW liOTAlING SHAFTS. 877 § a cS a d _o a CO CO tuo a es •H rH IB j£ 003 CD -* C- OOO in i—inso ojcorti (M CO (O ■S O O 3 O o oe> OOO lO •* CO 00 1(5 a oi eao o = o ooo ooo O = O r- 3500 moS o CO -T--^ft w-s'-rt) '■*-+ Tjf i*Tti--»i COCO!^ T« co-ro m^M 1 33-. rfi 'i b o o bo ooo ooo ooo ooo ooo ooo ooo H <0 p ^ 'i OOOJOJ ■^cni^ .-*os t- cM^eo MCqOS 09 O 00 00 CO QO S'-S -t t- m £ • OOODOD 'XJfOiD in-tf ira -*-« rJH 0-. —ICO -#r-|CQ W-HCO fd "o^SS OiOlOl oaosoa 09 03 03 OOClOl 00C3O3 .HCOCn mKS tn c3 T-Hr-liH THrH W rii-HiH (^^rtr^ rHIM—l r-iMM g 1 >?'^- ■ • . 1 t= •s _j IMeOM OT'-*<c- la-^ui CO COM ■^ o CO -"iicM in 00 03 m OC Tf 00 fi (S rHr-iH uiiain inic in ;3ss ^S!2 S;2Ih »i- 1— ■* i-> iH r-l 33S f^ a il) g t-OOS MMt- eoooco o in CO JM o CO -H f-1 OS WN O ■(Ha.'N ma: O) (OOO T-H O 00 o^^ ooo OOrO ooos a CO O t-t CM X 0> o -rl S 1 ' '3 ll-^.l CKMC4 (N r-t W MNcq r-ICM(M ■ o o o o o ,2 ■« o o o o' - o ■o o o o o 00 Id 1 o r-T " i-H r-T 1-h" 1-i in in" in- CO 1 « as ss ^ ii I ■R ( H " ri Si 3 fc---" 878 ENDUKANCE OP ROTATING SHAFTS. Test Ko. 34.— 0. H. Steel from Bod No. 1. The shaft was run under the same maximum fiber stress as in the two preceding tests, 53,000 pounds per square inch. It was annealed in an oil bath at the temx)erai:ure of 589° to 595° F., after each of six consecutive runs of 5,000 rotations each. After the final annealing and prior to rupture there were two inter- vals of rest of 32 and 66 days respectively. The micrometer readings made before the shaft was rotated showed small permanent sets which increased after running up to the time of annealing. After each annealing and the concurrent interval of rest the sets were at first small, but increased after the shaft had been run as before. The same phenomena were exhibited by the shaft following the longer periods of rest without annealing. Low annealing temperatures were employed because it had been shown by other experiments upon alternate stresses by tension and compression that a disturbed elastic limit was sensibly restored by exposure to comparatively low annealing temperatures, hence it was desired to investigate the effect of such annealing upon the ultimate endurance of these shafts. While in this test and the test of the following shaft, which was also annealed, there is evidence of greatly increased endurance, yet subse- quent tests have introduced conflicting evidence upon this point. The metal which fractured while rotating comprised 60 per cent, of the sectional area. This part of the surface presented a crescent- shape outline, with the dull leaden battered appearance typical to this manner of fracture. The fracture was completed Over the anvil, the balance having a silky appearance. ENDURANCE OJF KOTATING SHAFTS. 879 O (0 _g ) s . o Pi § •M 43 cS "2* ^ i 1 ^ S 1 1 i 1 '^ * ■s" ■g g t> W^N cgy^oi 00 -^C"- 'Mffg-w comirj sss oooor- r-r-o r- L— *o "5 OiOXSi oioicn C3 0S0J 0030 C3 0S03 0) 1 rHrH W tHt-IiH T^l-^r-^ rH.-lT-H r-ir-ir-l i-lrHiH >-(>-( I— 1 H * * ' . o P 1 -d ■ 00 00 t- □OQC t- ^St- (-1 MCS^ OjQOt- 00 OO f- L- AOO 1 "S i<;09 03a> CSOIOJ 03003 0>030 ososg 0103 03 03 0} 03003 ^rH-Hi-t »Ha*lrH .-(n w .-.i-Hi-H (H— !•-( '3 ►§ • • • • a o e (H 1 r C3A o tSA U t^A V (J« w QA U QA O C3A O tjA U t^A O a o o o o o o ^ o o i o o o o o o o o o o 3 O , tH~ « DS Ift Ift- «r I> 00- ■^ o -g H o u "^ o o o •o o o o e o 1 e o o o o IH f-T r^ c< o t-T r-T ll 1 e, 03 <0 ■ 3 * eS ^s f^O p 880 ENDUEANCB OF ROTATING SHAFTS. a 'S g3 t3 :3 CJ 8 ^ « o « 00 fR o «M 1 o £ 00 -49 I s s a s a 1^ §5 s 313 ll 1 1 sf % g* ' ^ ^ M ^ ^1 f: c 3 cs ^ CD a cj p) (WO .-IN W MfflTtl -sSri r-. M O — — ( CMCq -( O i-iM mw r-3 o t>rH IftCHO oosm CI t-— ( M wO> (OfOM OOCSOO .F^i>o CS»eO COOC 1^ r-r~i- r- 1— (o C-(0(0 t— so ^ ■^ O 1^ mom M — (O O"*^ MCltt> Tt< 1-)^ (oeo w -tjiccM -f CI o -3 "O .|it-«5 CfiC^OO OC 00 OO r-(oeo t- t>-co (D -.O (O Oi OS OO QOOoS 1 (0 sss s;^^ Its tfitn loinin loinm lOioin if3 lO L.-3 la-r.m mi« in 3 .5 ■ ■ ■ n 5 £ w Tjii-ato -MM to CltOTfl wmeo CI ^ OS t^ la lo >-(in w « ;03000 moon CJOSCO 000 30 l— '^ Oi 0000 t- cc oi -^ -•n aaoi C» A A SfflS OCDOi Oi S> Oi o> Ci o Oc: CI 's o «.-i(NiH ^ . . . — 1 r-lt-l iH "-I rH r-l -^ r-( iH iH T-t W I-..H ® 3 a P g o o s .g e>o » (^•0 Q e-o » SfO « •3-0 tt a-o « Qa u e-o o e« o "3^ « o o o ^ o ^ o o o (D o o o o o O O PI o o o o o o s 5 A cT ^ o ^- N eo ■*" IfT U5 o" '-§ o i-H l-( 1-1 rH t-t iH <3 H O t^ •g 1 t o o & o O o o ■« o o o o o O o ED o o o o o O 1 -i r^ O ' rt" r^" r-~ o „- I? ill 1 z ^ H, a & ENDURANCE OF KOTATING SHAFTS. 881 II Is ij S tt if W»tO ■*r-ieO OiHt- 94C»0 CdMN W«0> COCO ED' 0>r-lt- Cft**--! t>MlO NOJM »-(f-l«0 ooo ooo ooo ooo ooo o e^ o^o ooo ooo ooo ooo ooo ooe ooo ooo ooo ooo ooo ooo ooo ooo ooo ooo eoo t^Aci o'tAco ^t-*# ojoiso Mpqei] eom^ .coectA oc^oo oocooo t^on c^c^t-^ oi o> O) O) ooo ooo ooo ooo 000} ooo recisco M CO CO cocoBS cQ«m coMw cs ec CO cocom co ds eo eocoeo co eo cp eococo co eo co ooo oos ooo ooo ooo ooo ooo ooo ooo ooo ooo ooo eoOCdt IM 00 CO lA C«3 iH CO iH O O M CO i-l CI b> oot-co t~co^t- rOOcn o>oc^ ooo ooo ooo ooo ooo ooo ooo ooo CBOo ooo «o o ffoih ooom oimqo ococo t-'^co m m o -^ooo o to m t>eb- t~(ot« oot^CD t>-coto tcfov coon ooooo oot~t~ uaioud lamio usiotn mom lamio loiAUi u;u?l'3 una m tau^ai to una launa tatata oo^P eooQo -*^oo OOTo ^^eo ^irsto tjijoo oo ^ oo oo'^w 0005 ooi-iea t- eo t> t-aoa 0000 ^~ooo eoo oQoi>- ococo o co co oooo qo co o r~iHO oocooo t- o co 000 000 000 ^n 00 000 000 ^Oio 000 000 000 000 000 rlr-lrH (MrliH iHi-tiH r-l.riCd, r-i r-i y-t iH-MrH iMrHrH rlrHiH r-ii-lCSI ,-|?qr>4 Wi-lr-< rHi-H — tSiO u €*o u tSfO u 8a « €a u t3A o €a u Sao Q^o « Sao Q a u Sao cex) b-oDOO t>o>ao oono oo^ •iK'^m tntoeo oot^o ot-eo aocot> AAn o A oa ffi oi o oo^ o> o n oAo o 09 o aaaoi oiaat oiOiOi '.mmS S«w eanm mn^ 23SS5S SSSSS S?!??5 K S? 23 SSHIS SS5S rcoeo ooo ooo ooo ooo ooo ooo ooo ooo ooo I ffdioia CMQO-* coN« oift^ «D o o o» CM CO :* 'H o WOO-* tr fS "* SSri fCS Ot O O 09 0)0 03 O O CB O 0> A Ol O O Oi Oi Qi OOO OOO oa O A |---. -:-- -:".-. -:-- -.-- -ii- ". . . .". . ...-:.. ■vtioQi:* mocD ^n^t Nw^~t cooo inooeo oino ifii-ioo •Hteco oo-oM •t^SS t-t-S t~5 oot-t- t-t>t- i>t-« r^toeo t-t>tt) r-liH r-trtiH CMC^r-iPJCJrH rH(-lC4 e^CMrH 1? tSiA tt tSfO u 6(0 tt tSA V €a u a- aja ENDURANCE OF KOTATING SHAFTS. 883 3 Si O CO M O •(K (M ooo ooo ajso 090 ooo ooo ooo ooo □L fl»ao CC CO CO ooo 3'^ m aoi>^ OACD e^cQco cooom tsoio O O O QO en O O Q^ O 03 O C^ O O 05 O O) CO CO CO C*3 CO CO *V CO CO CQ CO CO CO C? CO CO Co CO OOO OOO ooo OOO OOO ooo iH-^'4' r-ie^co o fN oo tnceiA t-coo 0)00 0' t-t-o oeoco OCQO ooo ooo ooo OtH-** «oaoo i-tfoos ^looo ooira w^eo ooo ooo t-c-t'- t-i>c- ooo ooo o^o ooo ooo ooo ooo OrO U 3a U 6)0 U SfO U Ca U tirCi U SAU :/ 884 ENDUEANCE OF ROTATING SHAFTS. Test Fo. 35,-0. H^ Steel from Rod No. 1. Tested under 53,000 pounds per square inch maximum fiber stress and annealed at 595° F. after intervals Df 10,000 rotations. Small permanent sets were displayed, due to loading befor& the shaft was rotated. After rotation the sets increased, but were diminished at each successive annealing. A period of rest of 24 hours after the shaft had made 20,000 rotations was not followed by any material reduction in the sets, in this respect differing from the preceding shaft. The test was discontinued when 40 per cent, of the sectional area was ruptured. The principal fracture extended inward from one side of the shaft ; a small crack on the opposite side had begun to develop. The balance of the fracture when completed over the anvil displayed a gran- ular appearance. A few additional rotations would have completed the rupture of these shafts in the testing apparatus, the tests generally being discon- tinued at a time immediately preceding complete rupture, when there was violent wabbling of the shaft. ENDURANCE OF ROTATING SHAFTS. 885 g S in c3 i 3crt p, u o o o ssooo k^ - . • O O 1-1 t-coHi mor-c «5i»eg moot^ incoco Oram — o irs -^oieo i-HO*** O— !-t C1.-I-H tHCJO 009 OOO O O sS ooo . CO cocra -WCQ CO < QO O OOO C0CO >A o o es .ooo o.o o ooo ooco(M lAb-o) e^iaoi OO^-i ^-iO--l iHO^ o o-o ooo o o o- w M CO ~ in 00 o .030* Oi lO mr- pcf o 00 n 03 0)01 09 COtO cochin CO o eo 0-* t- eo o CO t> ^ C5 0>-<^ ill !i§§S Sis ocnco SIS §si S3S Ssi rococo lOl-HO T* o; ^ ooo ooo i-iiHCM CTi-lCM i-fCMM ODOO ir~ OOO Off3io p3or- (M-^io comto O r-1 O I-. O O OiHO OtHO rHe«C<1 (NiMOa G>]e40] 1-IIMC4 tSiOO €iOO €AU SrOU SfOCd t3pOU €rOO Bco" I" 886 ENDURANCE OP EOTATING SHAFTS. a> s a a o O I in CO d 1* / 1 1 Id ^ ,KI o S s 3 -4^ It If at S .*j h F3 pa .H -^f^^^ t- cooco 00-* mtotn OS ■gsss m^QO ^S*^ ^ W CO on coo .HOC- OC^O .-ItNCQ ■4^ oo§ oo ^ O ^O OtHrH ,g ^ooo o oo ooo ooo ooo ooo ooo OOO ooo H - - -/ oi cooso "*—.■«* S^'S -*■*«! t-ow o«os NOW ■*^-* (0"*Tt" tS::; q r-i«t-H ooo ooo ooo o ^sss 55-5 cococo COP3 CO ■W.-tl Tfl ■w-r ■* 1 ooo ooo OOO ooo ooo OOO ooo OOO ooo H o •s OU5M r^co C^WIM 03C40 h ooo .-to^ O'cfOO hc; — .-io E3SS ass ooo o o. o OOO ooo ■fl "Bmci^cm (M(MN WC4CM ^r-tcq r-.(MN C4 1MCM -HMW r-lr-lffl ^ ' ' ' . a S 15 ' o ^ k ;§ 5 Qa u Qa u 8a u Sa O QrO W «-o O Sa « 8a u SrO W Sa O o o o ^ o o ^ o o " o o o o a ■a o o o o e o o o OT cT o" ih" «■ CO ■^ ifT to ^ "o iH r-l S s H o (H S S > o e o o o ,0 a •3 o o o i-T o o o o o 1 1 rt tH" ^ 1 imnm stress quare .^ o M t- " H 1 is ^5 ir ENDURANCE OF ROTATING SHAFTS. 887 h' i. P4*' ^"3 PI 4^" oitaoi ooo OiOiOi 1 m CO P3 OOO' poo ooo ooo eoo o<=»o ooo OOO ooo p '4 >o t-oin ■ i-iwio >»OJO0 CJt-tO •^J-OtD t-t-OS (M--W -o ■d ■ ttt^-ffO tXM fH OO i-H ODOOn in CD t- CO in ire o-Hrti i £) rfSTTM-iO ^1040 W«5 S^S' S'flS ininin WWift ^1^5 ;« t3 fi wi-t iH 1-1 r-l rHiHr-l »H f-^ i-H T-1rHiH T-tT-lrH be O H Ej '3 E 'i e-rteo OUCOO t- to OS lO -rtt Op &2i3 OOlO eoLAoo eoiAca COODiO m a u o § P3 I (COM iHNW u O^ t=> _. ._. O ODOC- COODl iHM^ OM(M (N.-(iH Wi-XM OOO OOO OOO OOO t- t- O CO 00 00 • CO TO CO CO C<3 CO rf£ O OO OOO (OL^OO tHCOOS lAOfO HIiHtO ^0»0 000000 CQocoo oaoaoo aeooo cot^t- cococo cQCOCQ CO CO cc CO CO CO eococo OOO OOO OOO oeo „ooo tS^Oi Oi 0> Oi ra CO in 03 M<4iei ►p o coco in m M«CO OlODCO OJCDiM •* CM50 03 S s y M n " n f^cfl Pi ^ ■^ tiA u 6>o ( 8a U tiA U I3AU SiCi ' ENDURANCE OP EOTATIKa SHAFTS. 893 Test No. 51.— 0. H. Steel from Bod JSfo. 2. .Duplicate test of No. 50, excepting this shaft was annealed in an oil bath at the temperature of 500° F. upon the completion of 13,000 rota- tions. Small sets were shown during the initial loading, which were in- creased, however, after rotating, again diminished after annealing, and then increased as the test progressed. 894 ENDURANCE OF KOTATINU SHAFTS. p o t; .4? !^ d JS « ^ +j Ol 5« .n 51 eq 5 M c 0^ <^ h^ ■tt^ I .s o S h ft O O o o .5 o o « ^ n a « M 1 1 75 O^ ^3 aiM—i iftTOlft OOtJICO rH-rfCl aieoM »^0 -^MIM sss oi Oo<4< T-I-XI.H ,_Qoeo T-ilDtO o o in toe,-l 0)(MM rH — (M OOl .-1 3SS lass -*«-* o ^ . . . • * • • • ' fcC k; .5 "i ■2 cq H< P3 00 CO kn o too OCOM ob-o C4e4 0> OawOO <»»HO 'qoo» £ • nOiA -!*(00O «-*-H rE^emo) OOOi-H ODOrH sag sss &j "S <3"fHrH T-ifNW T-I(NM fiCMM r-MN (N WC« ^ . . . S 1 e-a o Qhs o Sro « e-c W e«i « e^i O tSfO U tSA u tSA u d O 2 o O ^ ^ o e ^ C3 g s o o o o o o -2 5 rt of M- ■*" W ■ ' o" o~ ta o " s H "o h o u CO CO CO 00 O CO *-• ff-1 o -^ m U3 m lo ua ooo r- o CO c> iR 00 *n t- oo J-5oo OOOli-l WC4(N r-rr-lN tOCDrH Mooin t>eoQ rHioeo ooiO -tf^^o »or-^ "- — " ooo ooo ooo WrH-^ CMT-JCM CM N W o com , _ _ otH r; * o O 00 ^■' r-l (N C^ M 1- WM 3a U tSrO U SrO ( tSrC U 6a U €rO O 896 .ENDURANCE OP ROTATING SHAFTS. Test No. 52.— 0. H. Steel from Rod No. 2, The test was interrupted at the completion of 10,000 rotations, and rested without load for a period of 41 days. Loading and measuring- the shaft after resting, the sets were very small, but were increased when measured after completing 1,000 rotations additional. The shaft was annealed twice, after 13,000 and 23,000 rotations respectively, the effect of which was shown by the diminished sets as before mentioned in other tests. Increased sets followed the renewal of the test, yet from the gradual manner of their increase the shaft was apparently slow to resume its former condition. A typical fracture occurred. ENDUEANCE OF EOTATING SHAFTS. 897 PI 9 a a o T3 td ID CO a 1 d as d « d d a o o d" -2 c8 o u o .n 93 e<3 OU3 00 ooo»e ^ot-- -^OSttJ ccoiia t>t>-« -HOO t- ?-t-l- oocooa O3CQ0 • CO eao3 so coco CQCQC4 CO CO CO i - rfsoo,© ooo OOO OOO ooo OOO OOO OOO >§ ~ s fl 1 0O(M) 94 CM t-l ^-( i-HCOO 1 'fS^oSo cnoioi Soiffl noioi OOIO CO CO OS CCOOO 03 O o OOO CO e'1'1'^. ^ o ^ fl- •J3 •t= - ce t- t-OD ini^in ^ Ci3 CO CO CM EM r-o-th OrHO iHCMO Ca^CM t^ « COOiH osirao OOO 5! rt ■ MCMW fMr-lM WC«(N CM WCM iHrHDI i-lCMCM CMC^tH CM CM CM 1 fl M" . a t3 g o s S a O efO « e-o o e.Q «^ e« w erfs « e-o w t3 A V SfCi u tSA u - ^ ^ ^ ^ o ^ o O ^ o £3 O d o o 1 O o i-T cf eo" hT uS o" o- s H o fr4 Cm O p o o o 'S o o o 09 o o o rH r-r ^■■ ^" rt" la <= 1~i ^ 1 3i§ 4^ 3j 11 - ftl' I H. Ex. 165- -57' 898 ENDURANCE OF EOTATING SHAFTS. 1=i O m fl'g 51 ^^ (N.Hm N(o« --■^o -^Oi^ eBt-t> open 2t:9 o»o om«~ M^jc eob-o oc-us ^oo«o aoco ooo oeo ooo ^oc! •r'®*:? ^S^ E*®::^ ooa ooo ooo ooo ooo ooo ooo CO CO CO ' CO Co CO ooo o oo a-^en coo)'^ a>c coeoco cocoeo cococo cocoo Ooo ooo ooo OOC 00 o ea 0030 .cot — I ooea CD ,^ xoooa ooooo tH 74 94 t- ■*l«(M inOffV .-««« !OOrH WlOtfl WtHM OOCOt^ (D-OlO'CDifSCO ff-1— 'M WOM COtOPJ Oi ai o> oa C9 o o o n oj ra o oaoo oi oo a oaow coooa .t-oo ci^ ooeoo CD CO CO i-IOO<-) <-! OD O O0i-)D- -^ CO 00 U3 CO (M ooo 00 1- 1* t-om coco^ eO'^co co o co eocQua mmm mmm ustnus mmio la-^m - NtHO rH->*(D .H( 1^ in 090"* rf£ oo <-l OtHO O .-( fH CI PI « IM ^g SSc «0-^(M la t-H-^ J^fegS SoSSo 9?,^^ ^^^ i^ o a A u SrO U t^-O V tS^A U t^A V tSAU 13 A tt Q A «b B £ i . ENDURANCE OF ROTATING SHAFTS. 899 S pq eoao om^ OOO OOO ^KOO Oi-C<-l ooo ooe OOO OOO t»t-t> oot^r^ oojDOO ffirooo offiffi eO, WM COMM mCf5« COOTOT ^neoM OOO OOO OOO OOO OOO ^CStH OAOO O'-fOi OlOO iMQOQO atoto CD H4 •« ooom 0003 00903 0303CB 00OSO9 -rfteo'^ OOO m ^ « o 00 ootno aoiui omi-< CO w o cemi£3 tniatn ■4oeo O) tn 00 0003 OOO OOO oooo C4rHrH (N C>J C4 C4 i-^ IM r-l C^l IM QA u JS>a u tiA u tSA u t3>o u 900 ENDURANCE OF EOTATING SHAFTS. Test No. 53.— 0. E. Steel from Rod No. 2. The shaft made 5,000 rotations and then rested without load 41 days. The sets which were observed after resting were small compared with those which preceded, but this apparent rigidity was lost when rotations began. The shaft was annealed six times at 500° P. at intervals of 5,000 rota- tions, the first annealing being done when 8,000 rotations had been made. A temporary reduction in the sets followed each annealing. ENDURANCE OP ROTATING SHAFTS. 901 § OB (S 3 p ■I « w B-. « ■a a « d « be a " OS r-t *HOr-l OwiM 1 OOO ooS ooo ooo ooo ooo O-OO ooo H - - - 3 OOOi-l C0l>O «w^ ^ (33-«)t-0O COOL OJ O OS 3> t- I- t- • mosfo rf;5oOO TOCoeo rococo 1 ooo oso ooo OOO ooo OOO ooo ooo 1 ■ ' ■ . * ^ N s fi ■6 m«w (Mirt(0 M wo OOON «=iftcn iHcoo lotoca in com OOCOlO 09 00.00 OCOIM inmo Soo niAi-i en~itO S 'J! — 00© CMCCXM So" sss Sgg S ,<03 0>C» o>oa — < O C6 rH 00 -HrH 0»0 O J S^.'^.'^ rHi- o o o o .1 S o 9 o o o o o o ^- ^- ^- ^- -h" * i-T w- - o {Zi 1 • IS H <& ea ' l^p So" R « "^ fl |ia g S t,-S l^i IS. 902 ENDUEANCE OF EOTATING SHAFTS. § a , CI o e hi "A 1 1 i 11 ^s 1 ■si i" 4a S 1 43*" *o 43 .4 a m 1 '3 §a s ""•»-< o II .3 a-s °«, ^' rj 0' •Sr^ ^'§ S li t s! 1* tl s c il l"2 as H M' .090b> MMM «oa «t-« ooioa. Hiwets i9s NNC^ mco(N t-jgg a i O t-(N ooo ■*s ooo -*fr- ^COO r-(COr-l ■^ineo OOOOOi CO GO 00 ' o»«oi t-t-b- OQCOOO oaoooB t-i- t- r- t-t- • CQ CO mcoeo CO n c<3 coeoco CO COM 1 ■s*. .= ■=.=.=: OCSO ooo OOO ooo OOO Soo opp ooo ^ n «• .-,««. 00.-I tO>HO OSrHM MNO lOWOO sss OOMN omo (Nl-lr-( -S ' rfSSSS oSS cr. t>oo t^i^t- c~o«o ono A0»03 ooca 1 Or-rHr-l W rH rt fHrHrH 1-1 1-1 iH rHiHi-l 1 ^ . , . ... * * ■ ■ * * • . • ^' 1 t= o ■i eocoeo loeotn ■*rHrH wooo» -foom ■^moo in CO CD s:ss lOffllO Ifl, iHOSO at-c- CO CO CO crDTi.in eoioTfl oor-i- 1 . (D 3 ^ n 1 13 OCQCQ m<-im t^fHOi •HOO^ OS m^ SSS oatoa 09 .tHOOO ,H0>0) enojo OJiOW COOOtH «■ l-I^H « h<£— ira^ oc» O) c»e>o ooo AO O 03 O o oo>o> o>oe ooo 8 1 ONtHW Mrlr- a>o III mcom oooa III ill ill ill / taiaSi III ooeo CO CO CO sss ill i-if-ti-i lis 3SS ■SS3 OCOiO CQ o in sSs' 09000 COOOOO mioio 00 00>-( ill sii ■gss Hi ill (MOt- 3SS SS2 sss ^mo Sro u QiO u Sa u (Sao 8a o Oa t» Qa v iSa u tiA u 6a u Sao <3a u 904 ENDUEANCE OF ROTATING SHAFTS. 1 1 s s ^^ M '1 a .a .^ fe" &^ § ■u ■e ea cS H3 in ^ "3 •3 a s a a i a ti eS bb 1 a g S u pq .00 m t> to eat~ inc^cD eO-^ ift -^i-< WO-* tOPSO M« t- r-t-o i-CMCfl i •ggis 000 oo 00 rH 000 00 w 000 CD 1=0.0 0-00 000 000 OOd 000 opo 000 000 ^ . , . . * — m or~ t- CO cor- OC t>l> ^« t~ comm SSS- QOtDt- O)«S00 OSXiH in.eo(o a ODOOOO xxoo e-tZf 00 00 00 Qouooa ' t-C-D- o . MM CO psmec oaMCQ Mffoeo CO coco g§g s ^000 000 ggg 000 000 000 000 000 000 *? ' " ■ t--* oeoo (M^O OS "-I CO «fgM 'C ra . ^mcD SCO CO 1(5 CO t- 10 coo s t£> lOr-tW ©I 'dill Cfl WfH IfllO CO ©o« 001 000 000 oo> 1 "h f-iwcq Tr<«(N (Mr-CM CM«(N 1-H(N« i-lNC4e4 WWM MMi- 1^ ' ■ ' a o 6 u « d % .a i Sa u Srfs tifO w erf^ « GrfS « SrO « Srfi Sa u Qa u bhO U ^ ^ ^ '' ^ OD » ,-) (=> .2 1- «r IS' s" 00- aT o" ^ eC eo" en ,w CM w (N CQ CO " Cfl^ CQ M - H u V. o (-1 ? (S .& ^ s E3 ® * ^ ° fH" •h" iH" r-T ?^ t/3 1 09 is ' e9 1 'm P- " 1^ 1. d P4 ENBUEANCE OP ROTATING SHAFTS 905 t-t^•co «ooeo oocooo ' 000004 t>COin fOtOOi. -^uso O tQ T-i 000 O Q'O O O "-I O O rH 000 oOo 000 000 O O — ( o o e •^com oiooo acoo moiM 000 OOQOCO QOCOOO CO CX} ffi 03 0)03 03 03 01 comes eocoeo mcaco eameo cocom OOO OOO OOO OOO OOO Cdfoa Nam eoio-^ fuaeo t^ _ a = S □ CO e<) toeeo oamoo Or-l^ 1-(IN^ r^O^ 000 ooe 000 OOrH lftr-C tH fH OOS4 000 oco 000 QOOiC QOOOt- m« CO 000 CO 3D QO CO COM 000 oat- 10 OCOOOO 000 SQOCO 1-HCOCO lAA'^ t> CO lA eo4tt~ OOOOD AOOO t- t> t> OOOOCO ai CO DO 3MCO cocoeo coco.co evseoco coei3co_ 300 000 000 OOO 000 m -4 eg o ■> cvinsoo tot^to moooa ih a m coO'^ wokm 3 •* CO iH CO CO O CM r-C 0» i-l O ^H CO i-< 03 00 A rH M M C «D M Qom ataoi mraoa 0S'O» a> oaonoi oiroaa oaoiA aocoea lOOOt- rCi (O-tS CO •-■kniM ex>'«'M '^com cooco '^mea coTt<0 AO) ^ . . . eooii^ cocDco om-* tra>N -rtO)-^ OS rH -^H 0033 AOO Ar-iO IMr-iC ^^ r-lr^Dl M(M(N rH rH W t3>o u 6rO o SiO o €a u CjfOca CiAu 3rOU Sa<» ENDURANCE OS* EOTAtlNG SSAPT^. 90f 1^ 1-9 S.S TfCO HI ooo III ggg |3| OOO ooo MO •-( ooo oo §g§ OOO - o kAmt- ill ggg ooo t-;oin lis b-CO<0 ill OOO re»oo III, sli III ill III oao ill sss igg naxx ooaoa cow w III ill isi lil omo t-ooa PS ^ -H soeofD' 00 t-oa rHOOaO 333 333 M t-r-( 333 Sis 91 (NC^ me4^ III ill tHNM S|| §S^ ill lis Hi ^^0 o QrO o c3a o <3>o o €a < c3a tt tSA V QrO u fi^ OOQOOO COCOCQ COeOOB COCQOO OOO OOO OOO j=;SS OBCoo SSSt SS22! S^i3 OMM r-tnev oiooS loSB cSw^ h^aooa cncoo oioo o^oot oarooi a>o>n ojom rassj Aosra oiotn |-T . "... .11 m m m m ^1--. 1-1' 111 mood meot> ca-^cg ocopk couma oO'^m -^e^'-^ cO'^m oaoa -tKea-Ttt rQOuatn coc&^ iniotn mom mmm m m iS music eoloco mmS miam J'^ .'^. ^."^ . '^'-"^ '^'1'^. '11'^ '^.'^'^ '^'^.'^. '^^.'^. '^'*!'^ '^'^'^. m tHM gOJ iHO S£E:?3 323S i299SS 'iiiSSS Mto» t-eoco comas uiAtfi «wo 0930 oao OC3A oo>o Aoo es i-H o raooa ooo aoo Sau erov Sav Sau Qau Qau eAu Sa'u ^rf 5 f^ 2 • M n "■ H ENDVTBANCE OP EOTATING SHAFTS. 909 1-3 ■a. S SSa "si oSS ill ill ooo ssss SS2 S3S ggg lis OOO ill isi ill Hi ill oDinio ill eOiHM ill ass OOOM OODA oe»o> 2Sg sss Nt-O III III t-r-CM atom III III iii iHiHiH III S3S sss 3S3 523 <0-4O ill ass sss ^tooo t- Ift l> S35 ill SIS ill 2lgS! ill OS 00 00 OJOIO III ill 2SS 03 AO t3>o o <3r« u 8(0 o dAo Sav SrOu t3>Qu t3i* CO 03 CO comoo eococo coecco OOO OOO OOO OOO tie a— (o "<*i(0'* Mi-)^ ooco« ifscooo ocoo dO'^ ■^'oo-* oojoi aoc»oo b-QOoo cot^t* or«t~- «Dcot^ eococs oco'o d0309 OOO OOO OOA 0> Oi Oi OOO OOO OOO a . CO occ , <3 O O O €fOV 3av t3>OU t3>OU t- CQ O O O ■* 0»-4 O O If) -^tCIM -^COPl <:z>a»-z> OOO OOO Mi-lCl C4C^C4 -MMCV dfO o Sa u €a « o id « S 2 ® ^ es ti « §■» w _ w h " ff ENDURANCE OF ROTATINR SHAFTS 913 •^C^X CO M O IOO'-H tOOO r-i coo o lO OJ U3 — i OJ OS ffl 0> ffiffi a aa oicsc» OiOOi ■li'iH Ol com OS ■If (o lo to ira in a*. OS OS Oi Oi oi mcoa 0-4KD Otjioo m t- in «-^— i (c^m oooo m co co ci o •h — IM 1-1 ea.S3 <-■ .-IINi-l fHOI-^ 00r^?>1 — '.-l<-l ODO<-I OS'-''^ rJrHrH (COCO cDcoEo eowo COCOCO incDto cococo ta-^io incoco 00 ooo OSOO 0300 0513- c>iD)G^ f-t^a eac*Jw ihckm ihoic^ cvi>-iC4 tipC) c:> S.AU €« u Sa « tStC) u €rO c tSrO U €f3 U QA U oooooooooo 0000000(300 o o o o o'o o oo ta o" cT cT o o" o" o" o cf w M tH ^^ r-t rK *-l tH i-H iH 914 ENDDKANCEOF KOTATING SHAFTS. Test No. 56,-0. H. steel from rod No. 3. Annealed six times at 500° F., at intervals of 10,000 rotations, the final anilealing being done when 63,000 rotations were completed. After a further run of 53,900 rotations the shaft ruptured. The effect of annealing on the magnitude of the sets was the same as recorded in previous tests*. ENDUEANtlE OP KOTATING SHAFTS. 915 a o a o to eo n 1 .a a « -4.9 bo a II 1-^ s a CD O § c3 «> Oi OQ h , (V ^ V. o HI r^ i •!-!< ■s w -« (4 o .a V IB ■2 oj K £ U .94 04 ^ m-^ui fS tAC4 Nt-M W-"*"* o2S t-THO i-i»Hm Ot-OT) ■ggss gooci gss 0.-I CO om^^ tC 7J IQ OOO COCO.-O' 42 sss oeo OOO ooo OOO. o o5o O CO ooo ooo ooo ooo -CD ,q . . . « mco to t-COUS cot>«o' t-OQt- oaooco —l-tOS r-lOrH Mveo-' n MMCO «mM C3 «m cQcom '« ^ooo Soo oeo oeo Ooo ooo ooo ooo OOO qa H « n 'i .*-»HI inffix -^eoin -*OOB o^o OOOQO OOiTH 0>H.M Hf-HOO ^ o t-r- h-00 t- 1 i rfi oaotoa raC9C3 OJOl Ol OS 0> OS C3 OS Ci OJOIA ooo OOi o ooo ^ . . . t3 H t- Wt-tD SDiO-* M«I- oirio Oiy)i-t 9 OOOS ^OO r-os-- l-^-H r-IOM ooo I-ll^— t O) O 9 o oo 03 0:0 o =>o ooo ooo OOO 1 ■fl ttrHrHf-i rH(NIM ff4C4 1^ '5 3.0 O Sa U (3a u Ha « 8rfS « e^ « e^ o a,o « ShO w O ^ o ^ o g. o O .. o o ^ a ,-s o o o o o ,■ o 5 o rt~ cf co- ■*" lO 2" «' ' „- ■-3 o »-) rH i-H 5 H O Fh "S i g o o o Q o Q o *=! C3 o o O o o 09 o o o o o o o -H rH" rt~ rH" i-T m" o -H- izi^ u ^ II L ^ 4^ u ' s 5 ft 916 ENDURANCE OP ROTATING SHAFTS. s> s a a o O I CO I I rO h^ to 6 CO iHO OfftKN mirraco «-*iO -*•*« 10 0)0 cor- t- rH(-t O 1 - nSm momto MmM mmco cofoeo eo CO CO eoM« mcoeo mcQ era CO coco cococo coeoco ooo ooo ooo ooo ooo ooo oo ^ ooo ooo ■ * • . • • • • . • • . ''-' ' * " * 9 <^ P rS 00«D ■^nto itifoo ^tD«0 CO CO >n «5(NlM MOlM t-«OBQ sss ggs (0 Sh-t' OCICO 03 ACQ ooco QDOOOO a ^ • ■ ■ SSS §3S oioxsi tJiOiOi ooa ■1 ClrHrH rH ^nrH rHrHrH rHi-l W i-iri iH CJi-lrH ... 1 p _;SStc> to tos) {Oeoeo 05D0 »jo-g «ow OCDO ^ H'^'^.'l rHr-ir-l i- rH r-« rH iH r^ rH t-HrH- r-fftrl rH rHrH a o 1^ ^^ a t3 , S ^ 0>M -di OQOO> (D-TOO oo eo OOJOl ■^laro CO ao-< t~-C0O r-i m o (M rH to « .obcor-i t- CJ -M O Ol Ol O COS r-o 8 eii a 'Sr^lMSM r-iMM CMr-. rH (M(M rH M rHrH (M(M rH OiS^U iHrnCl (TJCqM CM~.rH . . . . i ^ o5 ■^ a .9 a o e^i « e,a « e^ « e^ u e-a O SrS W e,o « Sa U e« « e« « o o o O o o o O o o O o o S q o <=» o o o o O o 3 S Ci CO CO •*■ Jft" to- t-^ 00" CO' -co o rH rH r-l rn I-l Ol M ce H 1 tt-, o i ■■ s O C) o o o ^ o ■a O o o o 1 ^ o 2- o o o o o" O ^ 1 B A -^ ' s COO .1* •1s K ^ " a ^ ^^ ENDURANCE OF ROTATING SHAFTS. 917 I 11 la S5 §11 ill NOOO ill- r-coo iii ooo ooo goo 1*1 1-^ 00 0)00 ooo III -« r-tr-(iH sss %%% •^oco III U3 in m sss sss cpcoo eo5om 333 M.-I.H INmCM iii ill' ococo LCiOOOO oocn moo WW-H 0.(0 Sli 003(0 C^M^ 13a tt e>o u StC o Sa V Sao t3rO o Sa u tSrO u Sa « CSiO u Sa u !3a o 918 ESFDURA.NCE OF ROTATING SHAFTS. . a -*^ o O I affl o as i| p 3' S.S ■a •a §§ B . w »o >ft :ij ^ 22 rf* Tj( n M O OO «oo o 2SS c* o o o o o o 1? ,• osA-^ ooec>-! •^eii'-i — C3 1— 1 M — W OiHM O^O OOO ^OO O^O ^OO OOO &aOC9 rH0303 OiSiA OOffi ■^ ■« in ct a t- ooo oioooo o A n o o> A 00 lAOO .CO Ttiera io m m ^^ CD O CO CD CO CO AO>t< CO CO CO MC-ia OOCOM US ^ ^ ^ ^ T»1 CO CO CD CD CD CD I- CO O CO VCD CO t-OOeW W^rt COOOM CQD--^ _, .._. _ ,._0 OOA'-i t-^A-H OA-H OUAtM OAA OAO OOO AAO OOO OAO AAO CJ rH i-l (N^N dC^CQ iH rH M « rH W ff4 •-( CI rH t-l N in to m c>) CO >n O O A A a> O O A A A A ^ 6a o Sao 6a u c3a u 6>a u (3 a ca :3 a ca @A U QpQ U t» ■§s£ H t^ " pl Si Ho ENDURANCE OF ROTATING SHAFTS. 919 is C4eoiA c4-4-« CO W T^I N Amo 030410 i>mt- oeoi.'a Htoom -jhim tfO'V^ CD CQ CO CO CO CO CO CO CO CO CO CO CO 09 CO CO CO CO CO CO Ct3 CO CO CO CO CO CO CO eoo ooo ooo ooo ooo CO coop o oo t- cot- coco CO ooo CO cbco ooo otA^ o3t~(N (oooi-i •dit-o fqima OOODCX) OOCCOO 0CCC30 00 00 00 00 3C t- cnno> C0030 fficsoi oc&ffi oaoto cnoi3> oron ooo ooo ooo ooot ttCOO fCtOtO U3t}(U3 ^ LA -41 «C (D CO I ^ O O CO CD W CD CO W CO CO CO d9S2 •-'fHio 0.-KO Cdusb- iftt-00 ooo e400 i-i — o O iH o c^oo oao ooo ooo ooo oo^ e^r^a^ MNC] NCMC4 crnsM cMC^ea oot- oeoco cooeo ocio cooeo e4- ^^ O O 3> •H i-H rH O OOO oa o o ooo oioo ooo ooo C4>HfH IHC4CM G4 C4 iM f-t CM D4 04 *-* d £4 04 04 Qa o (3au (Sao dA u 3rf 3a u tSA « (3rO u t3,o o t3A u 6a u 920 ENDURANCE OF ROTATING SHAFTS. CO o J25 o Qi a w 1^ .-a ; as CO tj CO o « " TO 1*1 g &0 n "£ 00"*^ »-ieoco .(OOO Ifl A lO ^'*-^ MTti^ CO ■* CO ftftooo ooo OCOO OCOO COCOO t-Ot- oeon ooo OOCOlM COt*-* ooo w eq -J F-iecm oow* -^coco lymat i-iiho .ooo r-iOO r^^4C>) .^^ o ot* o ooa ooo ISA U Qa U tSA U QfO U tSrO u t^A u Sa t enduba:nce of rotating shafts. IS g, S O ft i^ H ^. o ^ PI »' ™ s ■*^ §•1 s 921 f^ II s • o ® *'3 .3 m frf n S-H t-ooe CI 'MM ooo ooo 'ooo ill ooo ooo isi ooo II O O"^ coo OOO OOO ooo o to t^ isi d g|S S53 o »t to ill ^ coco coco«o 00O3 r^ ooo O t~QO ill III IfSOlN ill iii cc oo eortco ooo ►Hrll-t woo 5S2 .00-00 OQ ooro .2006 .1998 .1998 « osm OlOSOl SS2 g!3? OS 350 3g£ §S3 c; o o ooo |i| III III Hi ill III III OOift ■if Yf ^ CDUSiO oi t--ift sis HI gp?? OU QrOU tS^O tSrOU Qau Qao 922 ENDURANCE OF ROTATING SHAFTS. 1 to tH OlIAiA r-lOOO in MtNM ^00 CMWfM ^ wcq W04(M '§000 000 000 000 000 oSo S8S 000 III CO gooo Q 00 000 000 000 000 eoo 000 H"*' ■■ ^ eoooQO 00 00 00 »r-e» eoiiv wow t-oot- t-t-O oseot- 0D«eo» (NOliH comn OTBSOT ■*OTtC com CO CO CO CO "§ ® fgOOO 000 ® ® ® ^ "^ 000 000 ©oo 000 000 000 ►? PI « t-.-IOO 00^(0 gS3 SS§^ o»-*^ IfSMO r-IOOO ggss t^Wt^ t-cg 0) .CO 000 coaoo A m 00 ooaoo ** ^oia> A rano oiosoi 0010 o>c»o» ffiffioa 0003 oanoi 09 1 1 o ^.Hi-I dr-XN i-irHiH 1-lfH.r-t r-tw w www >^ ■s -l^"S t^ooio ^-^-^ -*00 00 S"* oinoo sii ■e CO"*"* tr~tO tOlf.Ui ss« SiSS toeoto ce ass sss knot* ■-lift 00 eo WOT oaon coeocQ sss 0) .OSO .H woo C100 ■s •e ffi "^ 000 000 000 e s^s 1 ^^MN CTMM rHff494 earHM WM W eqc^ei PKMd WCIM N«M ■3 ^ • ■ • 1 .2 o! a .9 «A U Sa •» erf3« SrfSO Qa Q C3A Sa w e*. « Srfs « Sa u ^ s a 3 o t^ 00" ' m" rfiT -r m <0~ t-T wT- ei" o M C4 03 eo eo n M CO m s B s <-t i-icm a»t-n -^e k a>a>^ MHit- OO 1-10.-I (Ni-t»-H oe4C«l 0«N t-lrH« OMM. OO i-««— < «•-<■- H C-1.-4CM O^C^ oo ooo ooo ooo ooo ooo ooo OO ooo oec > ooo ooo OO ooo ooo ooo ooo eoo ooo oo ooo ooc 3 ooo ^oo ■A'^m '^eom comir* t-oot- oc-a ooojco a oo at mm-« la-^^^ tamto ■ t-t> O O Oi O) O OOOS ooo ooo OSOO ooo ooo ooo 'OCkO Ot Oi Oi C^rHM r-lr-(r-l rtrHrH rHi-trH rHi-lrH rlf-irH r-lrtr-l WW-- rt^i-l r-(r-(rH ..-(r^jH SSS s<^f inMo oootn o^eo oeoo coo^ t-ifHCo tata-^ -^coo pho^ >u3b.(M -tOeo utDo muaiA iniAM -^tnm Tflinm >^U3«4( i>epu ocous eoL'?u> i>Ain«3 ^inin 3CP(0 cetotD cDtDte wtoo tooo cocoo tetoeo totoo tooto ooo tcocogs «fo^ -l»-l.- f-li-l^ i-l-Hrt i-liHrH .-(^»H i-trtiH iHtHiH rHrH-^ (Hr-lrH .-li-lW .r-lrtrS fHiHrH inooi todb- ooooo oeoco o-^eo tneooD -^coco eoo rH e O DJOO aO^nr-l O O i-l O O rH CO i-l ^ OOO ooo OOO OOO OOO ooo ooo ^ _™,_ _» oS53 ^oo MOO SIh^h ooS oo^ ooI^Ih ooo ^oo moo S2S oSSS — «— -. ^^^ gog SSS »So ^Att €^« Qrau (3au %3fOU -I5a» QiOO Ci,au !3^A o (3>aw <3.At»t ti^ 924 ENDURANCE OF ROTATINa SHAFTS. (S s a '•3 a o o 4 6 I il n lO etH O rit~ 'dS^o t»l> t-»OQ0 ooo CMr-iOS n CO CO CO «Srt s .m n era cococra cracofo CO COM 1 ' ■s°.°.° ooo OOO ooo OOO ooo ooo ooo !■•• IS R •a r-ooj Ift i-H lO ■* 1-1 N -*«-* (MCO^ O—IO t-oo OICMCO OlO -ij< in T« t- «o «o into ta lOiOlfii -r WO -fHiotn -rt-W"* g oo OOO OlOO ooo OiHCMCfl CM W M CiJ CM M r-IC^CM CM CM CM [MCMIM (MCMCM "d ^ . • • a 13 tD a .2 "• t3 o O o ^O o o rC ■3 o o , O o o a O o o o 1 rn" iCi o rH iH ^ ^- ^ co" IZi CO m a" S « o " h • o es * = .§' 'm H " a cd f-i-pi S5 3 ID a ft ENDUKANCE OF ROTATING SHAFTS. 925 Test No. 58. — 0. H. steel from rod No. 3. Annealed six times at intervals of 5,000 rotations, the final annealing being done upon the completion of 33,000 rotations. Observations on deflections and sets were made up to 38,000 rota- tions, after which the run was continuous until the shaft ruptured. 926 ENDURANCE OV KOTATING SHAFTS. a o s CO eS Ol a CO a o O CO n iS s i f4 e» CO fO 1 i^ a fH .esie^eo oinc4 S32S Mo raoacD ooo ON WM i-ir^rH rHrHi-H rHr-d-l rHrHrH CTCQM T-trHiH .•a ►? ■•■ • * * . . . P fO mta'ft 00 t-00 ggg -iiMm ^^t OOCO lis QO^ao OiMQO .c-t-b- (SCO CO Se3 O ooo oo o eoo OO 3 8 W W(MM C<1(NM NWN Dl^Nffil cieic^ C4C4C4 O ^S ■ • • '3 H t> 1 e^ « e-ci « e-o « e^ tt €.0 u e« w e^ tt t3<3 u «A U d O > o o o o ^ ^ o ' o o o o i o o o o o o 1-r M* «■ ■*' in" lO" «f t> « .fc o o o o o O o o o o o o u o o o o o o o rH ^'■ r-r rH~ pH e rH s cc •so Sift" i 1; K ".3 r ENDURANCE OF ROTATING SHAFTS. 927 a S& f S g d o o V £1 IS M ^QOrH ^6404 CO lA (O O CD O IM t« m . rH O iH >-H m o USeO^ OOO OOS i-H^^rH C4i-HtH OCOC^I C<=> u e>a •: ci>o u cS)0 u So u tdA U !:SfC u ti A (4 Sa u 928 KNDURANCE OF ROTATING SHAFTS. o s s 0'403 T»"*CO b-mio 0000 ««« las d S^" WMM nraeo m««) eomn co« m o m com CO WW nnn 2 23" - £2£2Sa < S O O 3 000 000 000 090 000 000 000 000 1 © P -a t-O !0 C4COO ~ ifa-HiQo a g^ 000 000 000 cnoo 000 00 000 000 ^ 03 o^^^^^4 W (MW(M CMlMlM P1C-1(M CMC'llM (H.-IGM .-ICIW CI7IM (NCleM MCQIN o S ' • ' • • • n ^ 3 P g 1^ .a 5 Sa u t3>c> u Srfs » (Srfs e,o e-o e^ *■ io~ o ei C] C-7 Q u tSpC u S^ u Sa u 930 ENDUKANCE OP EOTATING SHAFTS. « ^ 1 ^ at n <0 pH ns « M , -«.> P< P .OO^Oi NOl t- iMCOb- Oi ~tS Soo OiOiO) 'O ^OOSOJ OJCJO OJOJOl rt ocq^f" ^ ■ • • nS — -I>C<1 tfjift so « 13 '§SSS CO (9 CO T-ll-( I-I ri & ' • ■ & O •^ * K % wot- o«io ^ .COM ^ r-l.-H{M i^OOO OOO t; O WTJM CM«M i-IIMCQ o (D "p • ;^s ■ - - e I-i U d ^ iS n ■ O e^ o e^ « t3rf5 « ^ ^ ^ o o A 3 t- .2 «r t-- t»" ^ ■M o ffO co CO O) e^ H O Pi ■s g o Q o ^ s -iH o o o e 2- «r U la i^i OS s 1^ g£ .o i- ea <«o (To I SJl aft ENDURANCE OP ROTATING SHAFTS. 931 a o S a CO CS a> a o CO « in" a ^ a « a %> , .® ■ 00 ^ iii be o. s 1 W5 g: «a «■ o s !z; a 1 bi e a o -*«; -ICi a . 2 o ■■^^ .4J -W O 00 h V ■u Oh' ots s^ oQa s. (4 . as 5 9 ci_, fi-p ^ o • i5 s a- « » 1 . 1 ■^ ^ ■ •-^eac'i WOMO neato ineoeo oooiia ooeocj c<] t~cD t-oot> t-t-o rf>000 — 'OtH O-flM iHiO-^ OOO «o oo OO O ooo o o =» ooo OOO OOO & ^ooo eo 9 oeo o oo ooo ooo ooo ooo ooo M'*** --- , i (0-*W^ ;do3c~ cooaoD 35151 O'r-IO _, t-«PO> O3 00 t- ■*-<*)-* ccMoa «mS coco ro comeo CQcoeo CO CO CO i ■d.=!®^ ooo ooo <=>oo OOO ooo ooo ooo ©oo ^ ... fl ' 1 ocot- OlOIN g^g 3£S 'mift^ omoo cotH w- iht-^ DOMO • oo o 000000 ooo Qooooa rfiOOO oiosos ooo o>oio> "3 O W«CM ■^"^ rHrH t-l rHr-li-H P] (M C^ rlr-lrH ■ o ^ ■ • • . . . u t3 at m OA^ TdfflW tSS''^ W^ ^ tAO t- COMOO 09 to CO fQ -S . tr- to t- CO^IQO ■!».■-« lO C^ ■*« ■* .t- t- CO .■^ mm 2SI 5 ^«5«Offl sss CO V CO CD to CO sss cococo cococe 'cococo . s-:-:-: . . -. ". .' . . ""^ . .'*^ . . . . 3 b< n S "S ttjnoa UJHtt- cooe4 sss »-c*f)0 OOCOO 0 o .^ o 09 o o o o o O - a ■i ' o o o o o o o .2 o i-i" N~ CO" ■^ lO" wj" co- t-" ■rt 1 o ( 't J N O . S" 9 o o o o .o o o ^ 'o o o (0 .o e J O) o r;- ^•^ > i-T rH .-r o r^ ^ ^ a w j!li' .o ^5 B HI" 952 ENDURANCE OF ROTATING SHAFTS, d3 (M i^ o a . 3 i 5S P4 gS s ^ ^^ P "^S o ■a 13' o S ^ o s ps 1 o ^ = •3 1 ■§ t-> S u !9 if o 5 •^ns •i-i o -a" •a g A?4 (M— < W eflfow -^(DM Hfffl.n. ffl^W oin't- coMo cvsmcc- fl ■rHW^ MCOm ft-lCOCO o . ettco cj CO rt CQ CO CO CO 1 rfSOOO o oo OOO OOO OOO OOO 1 ■ ■•■ R "^ cooooo o •-I m 00 00 01 •sioa» «5 a> .t^r=-oo w,-io ooro f=J '5 rH rH rt CI (N 5N OOOB o»i» 00)0» ooto 1 c3 . o -3 mwca C>lM«-< Mi-HrH MiHiH (MSMCM (N WrH 1? P ^ _ ^ O CI CO 00 O i-H mm OS ff4 A(0 OStSCQ ■*CO — t-(NOO Ot*(0 "3 ■d V rfSCDCOtO OCD50 t-i^o t-«3(D (o toco (OOW to to« t- t*f- BS§ g T O O.^ — 3 " _ ooo o=)o ooo mocs I'S's. »n O t- tK t- TO .-1 — 5) — o o ooo ooo oioo'^ o-x>n wo-* com i-n ..HO.H — — Ir-J i-C^r-J OO-l OOO OOO 0C90 OOO 04 SM IM INe^C4 C4»au i;3Au :3Au S-Ci a 53-0 w QiO W Q-O « (3*0 « S-o <» tSA u 934 ENDURANCE OF ROTATING SHAFTS. ■73 s _n- '-^ a o fcq C5 ^ e 2- s s Cm «H O £ 1 a. i P. a s s ■S s "« e V u ^ h 1 i A ^ ri s s Sbb 11 L Is 10 fl ■gg ^§ 11 ee - a .- . . ^■^ Sii^ n w • •^i-{\n ».ot- 'rperns — 'ir*-! C4rHe«l *->i-(«# CO— ICO oeoo 000 2SS BO rf;r-.--iH — ISM-H •HMN e» moos 003 ^OO OOOJ 000 cnoo 'O Ci U e.G w 8-0 w tiA V (3A V a.o 1 o ^ ^ o ^ o ^ o o - 1 o o "? cd" 00- 00" oT 0" S w (N (M N eg (M n CO 03 m 1 g o Q O _, O ^ ,£) i o « o o 1 o o o o u •^ ■h' i-T t-T o i-T T-T ^•■ r^ ^ !zi ai£ |!l| 4s i3,S c3"^ ^^ '* ' ENDURANjCE OP ROTATING SHAJ'TS. 935 oo o oo o i-teo ift \ i-tM"^ o oo oo c o oo e o c co-4iia «sc0t- t-t>o oooia nooa oioo CO CO CO CO CO CO CO CO ^ CO CO CO, CO CO CO CO CO '"tft coeoeo cococ? cococo cococo cococo cOeoco ooo ooo oeo ooo ooo ooo o«ot- eaoiH rHt>o entoa> oust* mco-oo ^oo ooo ooao o ai A ooei ooao oeo ooo ooo OOO) ooo orae» ff4C>iC4 e4C4P) ff4r-l93 C4 iH >-l ff4 iH rH rl pH iH tocac4 to-^-^ -^oo H(fo (Hhi-ao cot-eo t>t-t- cococo cocccs como oiam inmio CD CD C0 CO <0 CO C0 CD CQ CD CD CO CD CO tD ^ fO ^0 ocoo -^com eooo} i-iOO 0>H^ O O •-( ooo ooo OCS0 C<1C4C4 C^C^eM «D)^ lab-o rHooeq cscon rHOCJ ^OM OJWW ooo ooo ooo WCflffJ C^C>)04 t-i«W QA U <3A C> C^A V tgA O 936 ENDURANCE OP EOTATINU SHAFTS. Test No. 70. — 0. B. steel from rod No. 4. Shafts from rod No. 4 we're all rua under the same maximum fiber stress, 45,000 pounds per square, inch. A moderate heating of the shaft accompanies stresses which cause decided permanent sets, the metal in the vicinity of the middle bearing attaining temperatures from 100° F. upward, according to the magni- tude of the sets and the speed of rotation. When no mention is made of the temperature the heating was mod- erate, perceptible to the touch, and ranging from atmospheric temper- ature to aboijt 120° P. This shaft acquired a moderate temperature while running, percept-- ible to the touch. Micrometer observations were made up to the time of reaching 10,000 rotations, after which the, testing was continuous until th^ shaft was ruptured. ENDURANCE- OF ROTATING SHAFTS. 937 o s o u ■ 4> n CO 60 Q IS IS XI •rJ a « « bo P IS 53 a IS o © g Cm O a> P< a fits o n -- g. i .««eo co^o cQeoo III ooeo IMOOO B ■4 eo D-c- win CD n ■SSSSi 03 0)01 S2S rHrH.H sss 2SS g 1 ^ . . . • • • S 1 ^ _ .d- »1-(l-l .-It-iO OOiHiH CO mco .-^ IQkA o^^ CD Oi O f^ 2 ^«0«0(0 w^?5 (OCOCO jgww 00 « rH r-i^J tH i-liH i-lrH r-l tH iH rH i-l?-liH ^ . ■. • a Ij .-,■■? .5 "S 00 AS} inffit- ecoom W iH OS A-^tn ca-*»n c-eo» h .03a»o» TUt-'dt « <03cna3 Soo o»oo ffiOO eS CMIMPI ■i 5. 5 ^ • - • 1 u s S a a t3,0 u a* » t3A V e^s O Sa u Sa o (3 O ■ o o o o o ~o 00 o o o o - fl ^ o o o o °K ^O S th" «- CO' in" o" (N" 3 o o in H s ■s ._ s o o o ^ o ^ a o o 1 o o o o pf o in ?s' m ais ^^ gin 4ft ir 938 fJNDURANCE OF ROTATING SHAFTS. I bL o a s a a a ® ft o o a © o u Cm O -a a> d o a; e3 o C8 a CS <4H O n C8 ID B l-H o o » 42 01 +^ ?S -C3 •I "f^ 60 Q'oH d -3 rg 1 1 Stream of cold water played on bar contmually ^during the test. Bar ruptured. 1 InAih. .0004 .0003 .0005 .0031 .0046 .0064 .0021 . 0036 .0003 .0081 .0073 .0072 R Inch. .0343 .0344 . 0344 .0348 .0348 .0346 . 0351 .0352 . 0350 .0350 .0350 .0349 g 1 « Oi +J ft ^ 02 ,y a ' m CD +- S) ^ bn g 'm S - 13 l>-j rt _a c] o 09 « •a 5 cd ,£1 p] ' o 1 p. t S ' CM o 1 1- . ■**-■«*■■* (MOC O ooin Ot^ffl aS •gggg SS5 r-.Tt.Tf ■tJ OOO _ OOO goo =3 OOO OOO •^ ' oS (D Its lO .- 0> Oi (MCiOi CM^O - ; d ■^ -+ t(i \r.-v^ in-tf* lOiAO o .e^ r^ CO e^ CO CO C^MCO X3 rfSOO O OOO OOO 1 a • P "B O 0> (M ^ O -t in loi^ O TfO 0) . O CS O QC. 00 CO CC'jC c- OCQOl- ■B rf*c Oi o cnosos a>cia> ,0005 to 1 on 1 .-:•. -:-: . Mi-irH "S t= w (S "TS fd .\r.in>n co re m cf.iyifSi h 13 ^ CO CO <0 t^ CO (OOO (O CD to Cm CS ,e IS O H 1-1 .3 "d -f M«5 p»«;* in r-IC-l gS3 ^ -d fci o o o moo OOO moo t-i . 03 t^,(N cq M ,-. eg CM (N(M(N rHtMCM S "£ C •a 1^ a P s o o s 5 d O t^A U :£A e^ «■ S^ » O o o o ro o a o e o 5 l-<" cf CO" oq" O o tn & H o ^ (m o (- - o o o ^ 'i o o o S o o rH o T-T rH r-l" !§■ m imum stress qnare ^ • K p "fl r ^5 ^ ENDURANCE OP KOTATING SHAFTS 941 Tests Kos. 103 to 106, inclusive, were shafts from O. H. steel rod No. 4a. They were run at a speed of 2,200 rotations per minute, all working under the same fiber stress, 45,000 pounds per square inch. Test No. 103 was begun with the shaft cold, but allowed to increase in temperature, due to the sets which the metal received and the high rate of speed at which it was driven. Judging from the color of the cylindrical surface at the middle bear- ing after the test, which was a purple, the temperature rose to about 500° F. Rupture occurred at 46,200 rotations. Nos. 104 and 105 were tested cold, a stream of water being played on them at the middle bearing during the tests. They ruptured at 58,000 and 54,000 rotations respectively. No. 106 was initially heated by means of a gas-burner until it was blue, the estimated temperature being 600° F. The gas was turned off when the test began, the temperature after this being maintained by reason of the rapid rotations under loads which caused sets. Eupture occiirred at 57,000 rotations. Test No. 74. — 0. M. stBelfrom rod No. 5. Under 45,000 pounds per square inch, maximum fiber stress, 2,000 rotations weremade,-then the load was increased to 48,000 pounds per square inch, and maintained for the remainder of the test. The other shafts from rod No. 5, were run under the latter stress. A stream of cold water flowed continually over the middle bearing of this shaft during the test, keeping the temperature at about 65° F. 942 ENDURANCE OF EOTATING SHAFTS. a o ai a o '-2 u eo eo at> bo a c8 he a 00 (U N 1-1 o 5 1 s a ■^ t- a o h ^ S< ^ 1^ ■^ c^ a o 4^ (Si 4^ © n Cm O ■s « 03 a 30 .So o 1 *i m s ' o ^ 43 M ■ 'tf (k^ - _g C4 o o 1 1 IS 1 "5. 1 . « s § 01 ' , N Cvl ^ i-t T^ O t-iHCO lA— llO c4«oe -JOO* MNm eauseo WCOiO to CO CO eotoco 1 •gSbo ooc ooo ® oo ooo ooo ooo J « H t-t- i .2 1 '3 2 '* 2 ooo ooo sss ^ *• 1 ID it Iff .^ c>] CO o oa iSI e>i-4'-i ooo oSSh Minoo "« •ssls sis — CMM ooo ^ a CO CO CO J5SS JOjrtjO fi^. . . . . . . ^ . ■' 3> t^ .3 ft. t3 OOCOtH lA'cqin ■4 00U3 OU3t> e^cMio « ooo 00^-H ^M-H •-•On ti ooo OOO OOO ^^A u e3 CKMCl e4c■ ^ ^ 1 a oD « 5 «> N P V CS . . 90O o HP •BO o J IS" «• ( [Ipl ENDUEANCE OF ROTATING SHAFTS. 943 Test No. 75.— 0. H. steel from rod No. 5. The shaft was initially heated by means of a gas-burner to about 150° F., then measured while hot, after whinh the temperature was increased to about 180° F. and tept there during the test. 944 ENDURANCE OF ROTATING SHAFTS. a o TJ ,0 TS q »o « .45 d !^ .* ^ 5 t*0 btl .s § I d o o a o o «4-l o -a O) OP 02 I'M O Bar heated to about 150° F. by means of gaa-bumera. SMeaanrements while hot. Temperature of bar brought up to about 180° F. and maJB- tained through the teat. Bar ruptured. Inch. .0002 .0004 .0003 0. .0002 .0003 — . 0001 .0045 .0020 .0055 .0019 .0036 — . 0004 .0035 .0049 a "a P Inch. .0359 .0,358 .0357 .0369 . 0363 .0361 .0374 .0366 .0366 .0378 .0369 .0366 .0378 .0371 .0366 1 .1 1 1 Inch. ,2000 .200] .2002 .1997 .2001 .2001 .1960 .2008 .1989 .2019 .1928 .1996 .1882 .1994 .2040 1 Inch. .1641 .1645 .1645 . 1628 .1638 .1640 .1586 .1642 .1623 .1641 .1569 .1630 .1.'504 .1623 .1674 1 1 Inch. .2002 .2005 .2005 .1997 .2003 .2004 .1959 .2053 .2009 .2074 .1947 .2032 .1878 .2029 .2089 s t3.ott.eiOo e.o« e,oo e^stt '. 1 s Cm 1 3 1,000 2,000^ 3,000 32, 850 '3 i 1,000 1,000 1,000 29,850 a I* ENDURANCE OF ROTATING SHAFTS. 945 o £ a EO « a BO I S3 Q 5s Ph Wo « o S) c re ^^ ■=<.-s "S).2 ^1 ■S 3 a ^ Pis' O M O . o *» tj * O Cw -«« « SI OQ o ■ft eo an .So o g 1 a I a»£ H. Ex. 165- .e4i-(m iH*Hw t-t« oooo oooe >5 «o^Da ^'^S °°®9 eiMr-t S5a°^ tdveo @e0 eeiQ uaee eiAo THoe4 iH*«tD iaeo-<« .eoo ema '^^He .tfooe Aosn eoo .? sss QrO u Sou ttiA V 6a o SiO 13 g s o e of eo" eeo •«e -60 946 ENDURANCE OF EOTATING SHAFT'S- o « a so eS IS a a o S3 CO eo ^ !» bo fl c8 ^ Ti lO g 1 d o ^^ OQOtO OOO o«oo ocoo • «»-ltHi-l iHt-Ii-I t-ti-li-l iH—'t-' >? i. 1' 1 Inch. .1994 .1994 .1995 .1995 .2001 .1988 .1998 .1993 .2005 .2015 .2001 .2003 1 e^ o e« w Sro « «« « ■ CM o 1 a D 1 1,000 2,000 3,000 55, 900 > S EC 1,000 1,000 1,000 52,900 a 1 H ft ■si 1"" ft. ENDURANCE OF ROTATING SHAFTS. 947 Test No. 83 0. E. steel from rod, No. 6, This and following tests of shafts from rod No. 6 made under the maximum fiber stress of 45,000 pounds- per square inch. The test was begun with the shaft cold; it gradually acquired a higher temperature, and reached about 150° F. at the close of the test. 948 ENDURANCE OF ROTATING SHAFTS. o « a OS § » «. eo a> &0 a 0S ® .fi -d a CO e fsT a v. i) w 0) !^ fe: « , .O *. e *a rO C ..^ (30 1 ^ « 1-1 h^ « o ^ ? §§ a 1 , p o (S !zi A 2 <9 O OQ o 1 £ fi 1 l-t 1 ■s 1 g 1- 1 Jncft. 0. .0002 .0003 .0019 .0012 .0011 .0002 .0027 .0021 .0041 .0023 .0028 .0029 .0028 .0053 - 1 Inch. .0332 .0331 .0331 .0332 .0329 .0231 .0334 .0331 .0336 .0335 .0331 .0335 .0337 .0335 .0338 j 1 .1990 .1992 .1988 .1985 , .1982 .1986 .1973 .1976 .1983 .1976 .1971 .1978 .1960 .1958 .1971 1 oor.it- eonia onoo .Hon foram ,^SSS SSi SS3 333 III ^ Inch. .1990 .1994 .1991 .2004 .1994 .1997 .1975 .2003 .2004 .2017 .1994 .2006 .1989 .1986 .2024 1 t3i« w ^Sa o e.o u Qa o «3,a o 1 8 S 1 H 1,000 2,000 3,000 6,000 60,550 1 1,000 1,000 1,000 2,000 55,560 1 1^" ENDURANCE OF HOTATIxa SHAFTS. 949 Test No. 84.— 0. H. steel from rod No. 6. The shaft was initially heated by means of a gas burner, which was lighted 1 hour and 25 minutes before the shaft was run. The temperature of the shaft at the commencement of the test was about 300° P., and had risen to 337° P., when 10,000 rotations were made. The temperature continued to rise as the test progressed, the gas burner being kept lighted, and reached 385° at 29,900 rotations.- The shaft was then cooled and rested 16 hours without load, after which it was again heat«d to 356° F., and the test resumed. At 70,000 rotations the temperature was 410° P. The shaft ruptured at 87,550 rotations, the temperature then being 432° F. Test No. 85.— 0. H. steel from rod No. 6. Tested hot. Gas was lighted 1 hour and 25 minutes before rotations began, the thermometer indicating 344<=> F. at the commencement of the test. At 20,000 rotations the temperature had increased to 386° F., which continued to rise, at 40,000 rotations the thermometer indicating 382° F., and at 60,000, 395° F. Eupture occurred at 61,800 rotations. Test No. 86.— 0. E. steel from, rod No. 6. The shaft was initially heated by means of a gas burner, which was lighted 20 minutes before the test was begun. The thermometer indi- cated 300° F. at the commencement of the test. At 15,000 rotations the thermometer indicated 387°, and at 30,000 rotations, 402° F. The gas was now turned off and the shaft cooled with water, after which the test was resumed with the shaft cold. It was allowed to increase in temperature, but without external heat- ing, and reached about 150° F. at the end of the test. 950 ENDURANCE OF ROTATING SHAFTS. o - IB a CO a o CO eo 00 be a a' as & -t-> a> 6* d ID o o '^ p o 1 m ■so ^ ■ :l \",' -e a ca ^. 1 t 1 » - -.-. iji " *w'os 00 Oi'-'-H ■*o t- -tfOt- «lfiOO ■ -S i, ■■ rfi OOO'^ crSr-ih- OOi 3i m t= o ' Tloo© Or-I O 's ■ ■ ■ M h^ .9 1 13 inu3« C4 no CO mo> WM t— CO -TttOO fH 5 .oaoio Ttinco •tS •gSESS ocno % o rHlNM rtMCfl iH^CflN Wr-tN 9 ^.. . . 1 6 s n 3rO U SA U OA » erfS « (3a u ^ ^ O O o o □s O o a o o s g J o- ^ 6a CO to" oo" i* o CO CO « CO CO n J H o f-i "S s g © o ■ o o o ,o S o o o o o 1 % '-'" '^' i-T cf ?3" Xtl afs 3; ENDURANCE OF ROTATING SHAFTS. 951 Test No. 87.— 0. H. steel from rod Wo. 7. This and the following shafts from rod No. 7 were loaded with 45,000 pounds per square inch maximum fiber stress. It was initially heated by means of a gas burner to 300° F. at the commencement of the test. After 15,000 rotations the thermometer indicated 412° J?., which in- creased to 468° at 30,000 rotations. The gas was turned off and the shaft cooled with water. The test was resumed, allowing the shaft to iucrease in temperature, but without external heating. ' It acquired the temperature of about 150° F. at the end of the test. 952 ENDURANCE OP ROTATING SHAFTS. J^ d o 2 m to § B a g .a ti 00 6 SZ5 .g .a P4 o o -* § -13 ' S O •« OS h. ■ ■'^ o * H I'M fi-o o a d S e I (OQOCD miso oo e o oo ^^ CO CO ^v CC CO • CO OS CO CO CO CO eeoe ooe ^^o eoooo -^ow •v^S '*'*co aa-* CO CO CO CQ CO CO CO CO CO ooo oeo eoo ooo eet^ia t«o-^ .wc»w ^coo c-coA oon CO in kn CO ^co A k CO ooaa » A o> 99 at n .(Hint- f«>CO tC CD rooo«D eo'^ lo oetD 900-^ ontn iHtAi-t BCDtO VtOCD (OtOV ■44 cot- AU3t-l .to oeo ooN iCiao o ooo nooiH COr-IN ooo fHMM Sa t> diA o Qa t> (3a u 5" ENDURANCE OP ROTATING SHAFTS. 953 Test No. 88.— 0. E. steel from rod No. 7. The test began with the shaft initially heated to 410° F. After 20,000 rotations the thermometer indicated 425° F. Then followed an interval of rest, without load, of 15 hours. The shaft was again heated by a gas burner, and the test resumed. After 40,000 total number of rotations the thermometer indicated 406° F., which temperature was increased to 412° and 416° at 60,000 and 80,000 rotations respectively. At the time of rupture the temperature was 410° F. Enpture occurred at 95,400 rotations. Test No. 89 0. H. steel from rod No. 7. The shaft was initially heated by means of .gas burners to the esti- mated temperature of 700° F, At this temperature the test began. The shMt made 11,400 rotations when excessive yielding by trans- verse deletion set in. There was insuflcient power in the belting of the testing apparatus to drive the shaft in its present deflected condition, hence the hot test was discontinued, the shaft cooled with a stream of water, and the test afterward resumed cold. A few turns of the apparatus were made by hand which straightened the shaft somewhat; it was then run by power, at the usual rate of speed, 400 rotations per minute. Violent wabbling occurred and con- tinued for awhile. After 20,000 rotations the wabbling still moderately severe, had diminished considerably over the most violent state, and continued to run in about the same manner to the close of the test, the shaft ruptur- ing after 117,900 rotations. Test No. 90.— 0. M. steel from rod No. 7. Duplicate of test No. 89. The shaft was heated and made 17,600 rotations at the estimated temperature of 700° F., then cooled with water and run cold for the re- mainder of the test. — The shaft ruptured at 140,350 rotations. Test No. lll.—O. JET. steel sKaft from a steel bar marked 15. This bar was from a lot of steel used in the second series of tempera- ture tests, and has the following chemical composition: Elements : Per cent. C 72 Mn ^ 76 Si 20 S 056 P 086 Cu 186 Fe by difference 97.992 The test was made for the purpose of determining whether the de- flection of the shaft sensibly varied on account of diflerence in speed of rotation, and comparative observations were made under different fiber stresses. The maximum speed was 2,200 turns per minute. 954 ENDURANCE OF ROTATING SHAFTS. As described in a previous report (see Eeport 1888, page 782) tbe deflections were measured by means of a micrometer mounted on a cross bar below the shaft and very near its middle bearing. The micrometer made contact with the under side of the shaft, and the smaller of two comparative readings indicated the greater deflection of the shaft. This shaft was not quite straight at the commencement of the test, causing a slight wabbling motion when rotated, which interfered with accuracy of measurements. within narrow limits. In the tabulated details of the test are columns of figures showing the fiber stress, the total number of rotations made, and the micrometer readings taken at fall speed of the shaft, 2,200 rotations per minute, and again when the shaft was slowly turned by hand. Two other columns which are deduced from the micrometer readings, show the apparent difference in the deflection at these two rates of speed. It appears from these readings that generally the shaft appeared to deflect niore when slowly turned than when at full speed. ^ It is thought, however, that this effect is due mainly to the fact that the shaft was not quite straight. Certainly as the fiber stress was increased the differences in de- flections decreased, and we are led to conclude that a speed has not yet been reached which causes a sensible change in the deflection of a rotating shaft loaded within the elastic limit of the metal. Table showing observations on the total deflection of^haft at different rates of speed. Maximum fiber stress per square inch. Number of rotations. Micrometer readings. Greater deflection. Speed 2, 200. Slowly tnrned. Speed 2, 200. Slowly turned. Pounds. 20, 000 30,000 40,000 SO, 000 1,400 2,600 3,700 3,700 5,000 6,100 7,560 11-, 770 20, 000 29,900 40, 000 40, 000 45, 100 50,200 55, 000 60, 050 60, 050 65, 650 70, 000 IncJi. Inch. .5M6 .6806 .6818 .6810 .5206 .5196 .5190 .5185. .5195 .5207 .5205 .6202 .4593 .4584- .4581 .4587 .4684 .3980 .3952 .3960 Inch. Inch. .6810 .5810 .5825 .0004 .0008 .0015 .5215 .5210 .5210 .5200 .5205 .5210 .6210 .0019 .0020 .0025 .0005 .0002 .0005 .0008 .4590 .4585 .4590 .4585 .0006 .0004 ;0003 .0001 .3950 .0002 ENDURANCE OP ROTATING SHAFTS^ 955 d o £ a CD « S 03 a _o *X3 a 03- CO to IS a. g a a a rH a O ■ o a p 2 « to 9 ci_j o i IS 1 1 1 .000a .0004 .0003 .0003 .0004 .0006 .0004 .0005 Inch. . .0374 .0374 . .0377 .0373 .0374 .0376 .0376 .0376 .0375 •B ■a 1 1 1 i 1 Inch. .1989 .1987 .1994 .1989 .1987 .1994 .1989 .1987 .1993 J Inch. ■ . 1615 .1613 .1617 .1616 .1613 .1918 .1613 .1611 .1618 1 s a t3 Inch. .1990 .1989 .1998 .1992 .1990 .1998 .1995 .1991 .1998 1 Qa « 8a u «a <» 1 1 i 70,000 109, 950 160,000 1 1 S S a» Oi" 0" CO la 1 1: t .0 Is 956 ENDUEANCE OP ROTATING SHAfTS. Test No. 110. — 0. H. steel shaft from a steel bar marled 21. This bar was from a lot of steel used in the second series of temper- ature tests, and had the following chemical composition : Elements : Per cent. C 1.14 Mn 10 Si 15 S Tr. P 018 Cu Fe by difference 98.592 Speed of tests, 2,200 rotations! per minute. Tested for the same purpose as No. Ill, page 953. In this test the greater deflections predominated at high speed, in only two instances were the deflections greater when slowly turned, until the fiber stress was increased to 50,000 pounds per square inch, when the deflections were much the greater at slow speed. When slowly turned the shaft was rotated by band. The effect of bigb speed in diminishing the deflection of shafts loaded above their elastic limits has been referred to in previous re- ports. Subsequent observations showed the fiber stress, 50,000 pounds per square inch, exceeded the elastic limit of this shaft, thus accounting for the diminished deflections observed under this load when run at high speed. Table showing observations on the total deflection of shaft at different rates of speed. Maximum fiber stress Nnmber of rotations. Micrometer readings. Greater deflection. Speed 2,200. Slowly turned. Speed 2,200. Slowly tarned. Pounds. 20,000 20, 000 30,000 40,000 50,000 Inch. \ Inch. .7046 .7026 .6870 .5835 .5820 .5826 .5233 .5228 .5e«9 .5214 .4627 .4622 .4631 .4615 .4621 .4611 .4042 .3990 .3960 .3911 .3832 Inch. Inch. f 2,000 4,000 4,000 4,800 6,000 6,760 6,750 8,370 9.770 10,600 11,350 12.200 12,209 13,200 14, 100 14,900 16,850 .5819 .6819 .0001 .0007 .5210 .6218 .6214 .0018 .0009 0. .4620 .4690 .4600 .4620 .4618 .0002 .0041 .0015 .0001 .0007 .4020 .3990 .3960 .3900 .0030 .0030 .0049 .0068 ENDURANCE OP ROTATING SHAFTS. 957 If o' I C3 O o s a .as a .2 o a « «o of SB s a e fl to .a bo a « a a ID O O ef a o s -a e a, xn .3 o o 1 1 Stream of cold water now played on bar. , Bar Tuptared. 1 Inch. .0064 .0037 .0047 .0069 .0096 .0116 1 |°°° °°° 1 J 1 1 .1972 .1969 .1966 .1931 .1934 .1930 3 Imh. .1694 .1588 .1586 .1635 .1638 .1633 1 1 . Iiush. .2036 .^006 .2013 .2000 .2029 .2046 5 QiO o 4.0 u ■s J ^ 16,850 25,800 81,000 •i s i i 1 1 o'o : S ) Pi 958 ENDDEANCE OP ROTATING SHAFTS. TEST No. 41. — WrougM-iron shaft from rod No. 1. The test was begun with the maximum fiber stress, 25,000 pounds per square inch, which was increased by 1,000 pounds per square inch increments, after successive runs of 5,000 turns each. Slight sets were displayed under the first load, but did not increase rapidly until 29,000 pounds per square inch fiber stress was applied. The shaft finally ruptured under 47,000 pounds per square inch fiber stress, after having made 111,500 rotations. ENDUBANCE OP ROTATING SHAFTS. 959 I d o ■a e d CO IS a o ■s « CO oo' d 1 « IS d « "^ S ss « i 1 4d s. ts ho r«l d i. a< r-l ■^ o © O ^ ^ d o of o >H 1-1 o IS o a> A QQ .So P-g O s M Si O S 5 6 5 41 S * ffl h "^ i^tpl ft t3 o oo JC>I(N C>1fflff4 |Seoo ooo ooo ooo ooo eoo ooo eoo ooo -tf-^Hr-l lO-^f-l tHWcH ooo ooo ooo ooo ooo ooo Cgc^ca C>Jff4o OOO ooo ooo OOQ ooo _. _, _- ^ cfl ca M e^ ?4 o u €a u ISa v <3rC 960 ENDUKANCE OF ROTATING SHAFTS. a I .§ I' I o a P4 .eq^oo c-eooi ooi-t oooo e^to uaaoeo to^tn co*^to ca ncooo rHcocp- oodatn ootoko oNrH -^r-tw^ eooofo 0004*0 .oooo ocoA oesok onn oooa aooA oooa acpoa cocooo oot^oo. ■^ O O w^ O O O O O 0> O 0) Oi O O O O O O O A O O O9 O O) O O O O O) tte4r- (0t*ei oow ooc-t- oot-t- t*pw 0U50 o^m •*-*io -xtieo^ o3C4^ eo^eo rfSt-D-c- t-*-t- t-t-t- t-t-t- t-t-c- r-t-t* t-t-i» t-t-c- t*c~t- t-t*t- wr4r-*iH iHiH»H tHiHiH tHrHrH ^f-fiH t--t rH i-H •-< iH <-• >^ O 04 ^ *H ^ rM O O CO C4 04 04 rfiOOO OOO OOQ OOO OOO OOO OOO OOO OOO OOO ^01C4C4 040404 e4C4^ M 04 ^ C4 C4 CI S4 04 04 04 04^ 04 04 04 04 04 04 04 04 CI 4 ■ Q>o u €a u c3a u tSiO u Sa u 3a u 8i« u SfB «d <3 A u Q A u la o lo o ass. ENDUKANCiS OF ROTATING SHAFTS. 961 o.oo ggg ggg ggg 233 ggg OOO ooe iir CMCO OOO ooo _ ill ail ill ooo oop ill ill ill Jii ill lis III 1-ti-lrH III ill III •H-rHrt iHiHiH III iHfHiH ill 0)03 III Sis 0^03 3SS 5SS lOOlQ ill Sg2S ill *HrHiH g3S sss OQOO ^ to >n iHrHr-t iHi-(,H ooootn SIS - — (IM W s^e>i(M ill P2CMO ooo IN WW acom ill oo-« SS3: ff4CMC(| in 00(0 ass Qa u Sao €a v Sa u r^A o €>o o d>o o tSA v qa o t3>o u qa o tjA o qa « tn m - U3 ' lO to U3 in njl^. 165 6i 962 ENDUEAKCE OF KOTATING SHAFTS. I a •■*ee-H r-)-*US iH«'^ CCeOeO OOOO tOWSO N^in WO-^ oiad] im-^co t-cON r-*(M— I i-H-JOil (M CC M ^MN IMCOM CM M W « « 03 CM CO PS -^ -^ ■^ 03 P5 -* .«eoM «MM M eo CQ cseoM coe>3« comers co co m mnco eo eo to mcoco rc*ooo OOO OOO OOO OOO ooo ooo ooo ooo ooo I y ••■■"•• •■, '■■ ■ ^ ^ ■«Q0^ comao 09400 cooo t-e>ioo . oa CO ff4 ; tO'^ o nmo oeot- <«Hm(o ccco74 ncocg moo c-i'M us *«• o i-i rf>oioo>o>noo eaoQD oooa ooda oiooo oiooo >^ooa •hcoo aor-^at I--- 1-11 m =^111 -.1-. 1-1 1 .1 .11 ".11 1-1 ooooco "*oooo wwt- e4b-c4 eot^O) i-<^« ous^ oj-^i-f w-i-^m o-^io .r~i-io loeqt- eooo mr-im •-■c>icm covaa eoc^n ot>ci3 oath i-iMt^ ^OOID OOin CO CO U3 t-mO t>U3CD COt^^ Ot-'^ OO-^tO l><4>CO lOOOUS WfHiHiH FH»-)r-l rtrJ»H r-lr-iiH iHiHiH i-Hi-Ht-I tHtHiH ^Wr-I iHrtr-t rHfHrHI >? • ■ • QC^e^l 0)003 ^■U3 ,^ooo <->oo ooo i- UlMVieQ N«M (NMfM > ca^M M i-( M W (N «H « N iH P- rH M « r-« M r^ M iH >? • • •, n (jA U QA U e^C. <^ QiOU QA U e>0 O tSA U C3rO U Q A «» ^AU '^" eiJduranoe of kotating shafts. 963 (oeob- ■'3'^^ mcoo cob-^ -^intt oat-co OOO r-iOO ooo OOO'' ooo ^oo U3-4(-« U3U30 »CO«^ CO CV3 CO GO CO CO CO CO CO OOO oeo ooo J'^W lOOOO CSIC-QO -H«-^ «rHW W»-ti-* O-HCO O^i-I t-(»ftt- tH OS t- O W M *00^ (seoo osotH oooo eif-(o otO'^ i-i-^fD 00040 CM o do e^ooo »HM.-I WMf-l WW.-I SA o QO o 8ie o O lO 964 ENDURANCE OF EOTATING SHAFTS. Test No. 42. — Wrought-iron shaft from rod No. 1. The test was made with the fiber stress 40,000 pounds per square inch. After completing 30,000 rotations a fine crack was discovered near the middle bearing. The shaft was now removed from the machine and rested without load a period of 65 days, after which the test was resumed with the same load as before. The effect of the interval of rest was shown by the smaller sets ob- served afterward, but this was only a temporary effect, for after 1,000 more rotations the sets were increased again. ENDURANCE OF ROTATING SHAFTS. 965 © -I c3 e ,a a o '■43 IS <0 eo eo oT tie 1 O e d ^ ® J2 bo ' d a d ft o o d' o o . «. ft OS I- .S o s . ^ "ft B h *H (0 ^ © S s m ,^ <«' i 1 S § » 1 .■iuooj oiMin lain to ouaoo Ot-r-* .Ht-00 COCO-4 isi CO 00 GO in-H^ 2Sm OrHOO 000^ -S (M-H(M 3*^0 000 <0 CD 1=°° OOP OOO OOO 000 =5*^. 000 000 000 § -MO-* ifSCON cnu>eo C9CSICO (D t^O coot' — leooo THoirt tn 03 eoo t-HOrH i-trH-H 000 000 o . CO 73 CO m CO CO 'coco eo coe^co CO coco CO CO CO CO CO CO 1. rfSooo OOO OOO OOO 000 000 000 o<^o sss N 0) Q ^ ^ : looo^ oeo-i' eocor-i oso'o eo^o i»«D^ OOrt »g = ooeotM -a) oot-^+ O) •-■ o ODOGO V'\aito oooooa OOOlOl C-OlOl rtSS 00 01 CO oosS « "n W rH.-( riH 1-1 WrH TH^rH iHrHrH i-(MrH .-HIM CM iHWiH .1 A'' '. ' +3 t> -s moffi ^^«!00 OlOM CO moa •fO CO CD O o coa> lOiHM rH lA (nc> t- 1' IS •gsss lOur. «. mom 3J3S ass r-^^^r^ i-lrtH 1-1 1-1 iH 25S o )5 * ^' ' • • • u> .H) .9 g ri OJ-<*(YS '•oina ooco t- Auaoo CO.-l.-l OCOO) o'osio ooin'^ <-lCOC4 h COOON u:>09i-4 CO-TtiOD OS wo t-eo ■«co^ eoiflcq T-tOiT-t C01H.-I 01f-< rHOOi 00^0 C»rH 1 e3 1 KTHNca •COriOl -HMca i-tlNN (MtHM c3 W ^ - s 1^ ' 966 ENDUEANCE OP HOTATrNG SHAFTS. a a '■& - pa o O IS a ^ d a & n P 3 <° s 5 9 s ^ s s • oco-4 ooao -iijimco t>mco OOiO .— O-J iHOr-( i-lO— !■ ,mMco ciacoco caeoeo comco sooo oo^ ooo ooo NOJ-* .-(-^O O W m 00O330 .^^0000 iHr-T— •)< a> CD 74000 rfS 0> O ^ ooo Oi o o o>o o U^CaiH iHWrt r-li-li-H r-( .-H rH (M ^J O r-l M O .WOOO OOCO •^wr* us<- OOO ooo 0> O O €a o €a « ENDURANCE OF EOTATING SHAFTS. 967 Test No. 43. — WrougM-iron shaft from rod No. 1. The shaft was tested under the maximum fiber stress, 40,000 pounds per square inch. At intervals of 10,000 rotations the shaft was removed from the test- ing machine and annealed at 323° to 326° F. After each annealing there was a temporary reduction in the msiigui- tude of the sets. ° The shaft finally ruptured at 86,200 rotations. 968 ENDURANCE OF ROTATING SHAFTS. d o « u B CO a an O •-B « ?s be n 1! ^ fif !§3 "S « ^ d « ■42 (5 » n W5 -.a S be -t^ a s ^ ^ t2i a Si v o p' '-^ ce o 13 .2 o o 1 s. Cfl ■* © i-teoc- eonm OCClft o r-f -* CO •* ea CM-^kA OOO rHOCO 1 liii O rICD Ssoti «?-«co ^cow C>Jila ooo s CQ CO CO OToseo CO-CO CO CO CO CO eococo CJcoeo (NC^o CO COM 1 ^ooo ooo ooo OOO -ooo ooo ooo ooo OOO iS p 1 m w^ ass inorf* IN OS CO in cot- t- O -J »a CO CO, OOC-1 .MOTOO OOOi^l cor-tco OOi-nCO rHO r-i CO CO ca iH 00 t> ^ roooft ooSao cooioo «32 S2o^ S2S » a "SrtSS T-lt-ll-( i-)i-< t-H rH ri t-1 N r-1 i-l NrHi-f ^•^ "^ '1 ^ . . . o b 0) ■s ^ r^eiseq t»00 (O iSooSS A lA CO IM m t> coua- OOiOi (MrHM C4C4N o g o o o (-) j^ o o o o 'S o o o i e r-( rt iH >o o »-r M ximnm r stress square nch. Is 5 ^ ENDURANCE OP ROTATING SHAFTS 96'J a g ■I P. ooo ooo oc o t~ -• ^1-4 lO rH com ooo ooo ooo^ ooo coot- Oi(0(M OOlftin CDCOO -rJfOTfl 1-1 ffl CO ■*iom ot-io oco«o MOD- CO I- -J ooo OOO ooo ooo ooo r-( O r-H OOO ooo lo o o ooo o o cs ooo ooo ooo CO CO CO ooo ooo CO coco ooo ooo CO CO CO o oe . (OIA-^ QOOOQO C1 tH .-I -^ 0030S OOOS ooo OOO OOO CO CO CO (N N,c« coeoci COCQCQ COCOCO* copoco o /o o o,o o ooo ooo ooo ooo fiOt- eOWCQ OOtDM rHr-(0 ip- .-H w OSroOS COCOCO COCOCO (MC^IM ooo ooo ooo lo ■* oj oc oa^vi -w o 00 omio r-»rso r^w-* OAO) 0)00 P900 CO cog Oi Oi 03 03 A en ca CO"* m lo ira Oi Oi O) ooo HCMC^ OOOOi toco w-l ooo 2gS cqcoo S8S 0005 <3rQ.O tSAU d>OV tStOO 6rOU QrO 9 tStO O SfO O 3A U SrO « CiA O SfO U tSrO Q >/ 970 ENDURANCE OF ROTATING SHAFTS. g 'a 3 a •-J3 P o O I. o ^ I" I ^' d I I .QOOIM ift(00 Wt-00 uooo c e => ^oo mm m o o o in<-^u3 cato-TfH i-fO'^ coooo "^int> tHwt- mfr-<- ^Oi-I ooo ooo «oo ooo ooo ooo ooo ooo ooo ooo ooo mt-A offiOD mino4 fooom a3c3Eo we^io fH ^'O oamcj ooo ooo oi-io r-i^-i^-f meon Dic^ca as mm coram as eon at at at OOtH ooo ooo ooo ooo r-li-l<-l ocao .OOD- ^ O OS tJI tK U5 O'ln SCO '<<«0 Tti"«lft Oi Oi o> en o 9 SrHfo coooco oocet^ eoioto tfl<4oi oaoo aaai to co co t^-OJ (O w^o .e-to t- (0 coo ,QCO (O U CO o o 00 r^^ O V CO ^H ^ cnocj ooooo eoooQo coocm lAcom co-4ao 223 CO teen r-li-tT-i ill iHiHM III gig eomm sss Sis «C0® ssS ESS ill ill iHi-lrH •tfWO Hi m iH»-liH M WM iHi-IN III i O CO iii iii ill. OlOOO mSSS i3a w €a u Qa w Sa u Qa u t3iO u Qa u t3>ct u tSA u Qa q c3a u Sa u Q^ 972 ENDURANCE OF ROTATING SHAFTS. li _g tx -S 1 *« a

OJOS 1— 1 lO"* t- CI? 00 •HOOin oo co- «JO-*i OTt*00 COt-^ ggSS -*-*o ooo ioHiO .-.OOO in r-O orjg (M t- O O i-< — ( C3 (3 O OTHr-i T-IO.-H S, o o o OOO o-o O ooo .ooo. OOO ooo OOO ooo N " s inioo t-to^ ODOO CO ffQ W O r^iHI- t--*M lOiftOJ ^22 ooca t-MO p i-H^O .-(^- ^H t-Mr- J ■CO coco MMOT cccoevj eomco COCOC3 mcoco comS CO CO CO COC^ CO COCOM -^ooo ooo eoo ooo OOO ooo ooo ooo ooo ■8 . ^ <0 n « -d «00« cqatsi w tHoo coeOQC 00 .-lO CO CM 00 eD-*(M t-tOr-l eo-^M CD COIN o CM M N 05 CO CO Olt.iO CQ>*-* r-m-^ CO CO 43 I 'fl F^O> AO> oicnoi axjiOi oiOiOi osojro cnoo ojoen . OOft) ooo omoo jP . . . o t) 1 ^ ■*eo!0 lOMOO ■^ eoia o ITS CO t-om OX c- 00 5 H O IH Cm O (D S > o o o o o o o o ,-2 "ti o o a o <=> o o- o o o o § ^•" rT lo- o r-l' ,-H~ rH ^ r-T ia ^21 m p £1 |i § 1" §S3 «, 1 So" o" 3; D 1) ENDURANCE OF ROTATING SHAFTS. 973 cnt-a 09403 o»mm eocooo <^eo«o oiOii-t 0,00 COfflt- ^Oi-H -^t-CO HttOC*! 0(NU3 O^O O^O OiHt- O O i-H tH^HiH N tH rH ooo ooo ooo C300 o O'O eoo ^Ac^n uatnoa oicOA cO'4< oiosoj D3030 oioio} oitnoi OTfoo ujo-^ ■fS'Ooo eOiHifi oo^o os-*oo OOOOOD CM'^W COr-li-i OOOO SD.-ICO lOOiO «o1 tHdCM I-IC4IM d 64 01 ff4 C^ (M Sau 8A» <3ao t3Au t3«u S m a o '-u » (D qd 9> Q . CO eo m bo a -i^ CS e ,fi rS a V a (S « fc -t^ u .n XI -^ bOfeJO a a -^ ■*-* ' s> ® t4 o s ^ s .a a tS &d 1 ■?. © fl ^ a; ^ .a s hi ■^ c« -t:> o QQ H Cm ^ O -C! h W u m , f{ 5 &= rH ^ 5® ri^ ®i-i If} a Cm •l-< iS O p£] Hfl-d O ,4 y „ Eq' g ■* (tH © £ S 1 1 1 A »« g 1 S 1 1 bJO 1-3 ' ja 09 faU a 1! oa EsS pa .Ot-W sss (Oa»eo COrHCD NMCO o-^t- ^MQO -IIMD) --t-o MCOO ifHOOD OOOTt- OOO •O^OCM -» Ilii o o o OOO OOO <0 ooo OOO OOO OOO OOO OOO OOO OOO N ~- ■ - ■ ,- - - 2 rnino lAIO«D ; WtOO S^^^ "."-". """ """ ^.^.". '^."". ".".". """ "r-^ ^ . . . , 'i s -d enmoo o«o«o eeto^ »^ o di A o o Ot-->* r-lUiOi ODmtO "irfl M * lAODO oiOTD oieot- CO (D i^ tsmeo ^ em co OOCD 00(0 to to 'S to to (O to to to Cg,-(M r-l-HrH oicoio t-Hcoeo oo>»-i ooo Aooo ooinoo t-cot> ooo ooo - iii sag -HrHiH 223 S3g SSS III sii III III ill ill r-trHiH rHiHrH 223 ■MAlO >->i-i|H III ' »-trHiH ill ss§§ III ill F-lrH W ill rH.-«rH t« ■^OOt- «>o^ —»«' (Oiar-i 00f-t(D W«0 g^s O CO 00 s eo t-tD Omo OOO t-oo uooo ooo . « ^•=:°° ooo csoo ooo ooo ooo OOO ooo ooo ooo i ooS int-ia t-COOO t-1-tOO *-icoe kflO t- T-i — <~i ooo fHOt-I iHoX^ Mec« CQ Ci^ CO CO CO CO CO coco 1 »C!000 OOO ooo ooo ooo ooo ooo ooo ooo SSS ^ ■ ■ ■ fi ■g gBS ■*eo.-i oo to sss OlOO in-«tico ' g?!:s §sg ODd ^ t-4 csea (OiOt- t~tn§ • •• . . . * • * . . . . . . . • . w ►^ .9 1 CO COW III ■*■**<« w*in 1-1 .HM fHO t>. O >n O CO OD (N 00 ^00 —^ .fHr-iCM coe^m -Himeo o^m COD-U7 OCO^ w^n rfSOOO ooo OOO ooo 003 OOO ooo 1 1 a tj W«N fHrHN CieM94 C4e4«jiio O) A O A Co O) t~ no 00 >d< A m m CO m CO i-i CD <0 V CD (O O H< HM O) OSQO 0<4!Ci9 30 o ooo OAO rHO r-t • MM CO coeoco Sooo ooo o a n M o -^ coco m J* CO lO t-Tt«.-l OMlO COr-(N o coo oo c t-tooo tooor-i eoeoo coo'^ti e^ o eo oao ooe-^ co-^m i-iocm • CXiOSOO QOCOOa ooo t~-00O OOt— O C=>i-H^ 0(0 tnub'aea coodoo ooooo oo o oj o ro a ooooi cooo or-fi-Irt iHr-(T-( iHi-LrH .-Hr-tr-l rHiH^H i-lrHi-1 DJtHi-1 i-KNr-l r-ICflW eoocD oooo co^t^ dt~a iowia or-ua oeoc^ (MtOt-i t>no . 00 e>.cD t-&4t- t-ooo mcot- mmo ooooo otAta mto** ' o-e ^-t ^toto^D xAViui ^tam tamtn inmm A t>>o«o lat^co iQt-t> rfSOsoo orto bdo^ W coNco dtnt- tTOiA O CO O (H 00^1 iHOlO OO'-'O OOOO ov QpG •3§ So" ENDURANCE OP ROTATING SHAFTS. 981 5?? oo o eee n -^ o aoo-« t-> O ^ iH O p-l n no r- r- V O'^ifie C-. o oo 00 o a f^QOO 00910 CO s m >anr^ CO t- ua in I- (0 r~ CO 00 comiA r-iao ca CO t-oo -^009 ao>- S it s ai (S a CO a o n CO bo a a o © § o o IS 04(00) «t-00 loa to ■^eoto WOOD ^oeo MTfM oSTf eo 0030 WO»H rH-H— 1 ooo eoMCO eoSeo mmeo CQCoeo oaeoeo «9 •g o oo oee ooo ooo OOO ooo OOO ooo ooo s ' ' ' • ■ • . . . * * ■ . . . ^ ' •^ O 1 OOM s&s ^ ■^t-—! ooot- OJ-H—t canfo lacotH ift&>o» SfSS oeot- MO>t- to ® •^s^s 400U3 o tom t-iotg «t!Q ^ . . . u 1 "'. COM^ isi e-iMO wno USNiH i?aao>n ^00 CO ^^gg^ SS35; .ooo t-HSOt- aa-4 1-4 cc>r~-Tt( OOO—l aaaeo Soo osSoj K tiDIC^Cd tHnoi iF-ie>4ff4 fHiHC^ cac^T'i 1-1 c^e^ i-lNtH 1 o -a ^ ' ' ' a tJ 1 o S Qa « Qa o Sria o OCD ■S tooin (MOO ■ft t-es] OOO oeocQ eoo Ot-»ft l°°° — oS-t OOO .HOrH 5 oSo coo OOO OOO OOO eoo OOO n usooeo o so CO-^CO 0003 ■^■^oo ■*«« cec-Tf ^«r-l OOO •H-^O OOO tH^ o ooe iHr-lr-t >goo-o DSCQco Dsmca CO com eocod 1 OOO OOO eoo OOO ggg SSo sss ^* " R ■1 oeo» Moeo ooto-* a«^ coo^ oo»o -^t-eo lftCD-1 »e40 ffiooi cooo a>0)Ci «i- 1- ■a aonr» oocoth «DinN 0-«i-4 .oaaoi t-mc- oiOiOi « ■^sss lOCD A cocoeo t •Hoeo CD^CO oift (o ex eor- 0*4 00 ^ 'iisi gusm '^S^ cecoo ooffi ^H t-O 1 f^ OOO O OOO oo>^ 1 N C-l M CM t-) tH Cl I-i « Cfl tH 1-1 1-IMW iH O O o o .= & ■s s i O o o O o o o o- ® s" ® o- => o" CH iH at \ ass .9 « o^ H M °° 9 ^ O o ■ig g s e §■ s" 5' ^i J P. « 986 ENDURANCE OP ROTATING SHAFTS. i « 3 a ■43 § S a s Pi a i a •§§£ e o as a g MjJ ■o Ji 1 • S ^sl . . •SI'S & « ^ © S £-g>g « a^ S cO'^fi aoo>o ■Acoco me^o ot>C0 e^iMoo OC3 t-miH 000 ^ r-l I— J eo CO 00 eoeoeo co eo eo coccco sooe 000 000 000 00 1> ffi t^iacc «eo(N THt--* ""(joo-* rto-H 000 M ^ iH M<-(.-H ncMC^I ncoco coeooo cocoeo ciscoco ooo eoo 000 000 o> -^ o o aco -(^ C -HOM OOOSO OM74 OOOOl iOcO"<*< t _.. - , _._.., j> o> a AOAo cno^cb o^oo oonco nnoi ooon ooino) cco>c& ■« (M ta e<-'e» ocoin t14-hoo co-^m t^eo-^ opr-ce oweo ncom -, ._ Ol^O 00O>OS fflCOO OOOOJ COCMM WOOGO -^-HM -^WM t-oo^ ro o _ . . _ (MW« fHMW WffIN o -v 00 00 P3 uo ^ o oj 00 up AOO 06 00 r-l« CM CDMQO -^OJ^ wot- OOOOCD 0019 00 CO 00 aaot- 0000 ooe 00 o o 00 i-H o raoa^ (NWIM r-.MN iHIMN rHr-l« Qa c> c3a u Sao 6a c» Qa tt ^A u Qa « Sa u Qa u Qa ca is ENDURANCE OF ROTATING SHAFTS. 987 l| •g" P 8.3 s •o §a ^1 ■s| P i^ 11 '33 l-g 3s ■a Ji J ■ o h . g 3 M M m-^oi (Mt-O a«N (Ot*« sea CMMt- ScSS -HMin eoot- ooo S§o c^oo OMO •H00-* o oo ill O r-li-H —tr-lrH OOrH ooo '=.°= ooo OOO ooo *=.'='. ® OOO OOO MrHrH OU3CI9 uoaci r^lOKS t^uao sss SSot C4<- oo tH«OI> eatoa wt^t- ass sss sss (Dceo '^'^'"3 in CO CO ,'.. — III ob-«p ill a^oo moS OOO niMM •-tW « tSA u s O ^ ^ o ^ ^ e o ^ s o o o o o e ^ «s- co" CO" CO ■^" uf » r t- ■ t- t- 00 00 00 00 00 o> o o e o o o o ^ o o o o o o ^ o o o o. o o o o o " "" t-T (> o iH "' w- o o o o o s- s tss ENDURANCE OP ROTATING SHAFTS. n v ci! •g •43 q=l eo bo .9 c3 a be a o o a o o 02 u , VI ^ (U o y CS o fi -o ^ o ,£3 V i Bar annealed at tempeiatnTe of 425° F.; first annealing. Bar annealed at temperature of 425° F. ; aeoond annealing, Bar ruptnred. ■ : 1 1 CO Inch. .0003 .0007 .0006 .0004 .0020 .0097 .0C03 .0008 .0004 .0021 .0179 .0080 .0002 .0005 1 Inch. .0300 .0298 .0300 .0303 .0303 .0297 .0297 .0298 . 0-i98 .0302 .0301 .0310 .0298 .0299 .0298 1 1 1 Inch. .1991 .1981 .1989 .1921 .1853 .2081 .1995 .1974 .1996 .1904 .1972 .1926 .1969 .1988 .2005 3 Inch. .1691 .1683 .1^89 .1618 .1550 .1784 .1698 .1676 ,1698 .1602 .1671 .1616 .1671 .1689 .1707 1 1 Inch. .1994 .1988 .1995 .1925 .1873 .2178 .1998 .1082 .2000 .1925 .2161 .2006 .1971 .1992 .2010 1 o OA U t3.0 U dA U CSiO W tSA V * f 1 a 1 20,000 20, 000 40,000 40,000 57, 600 1 20, 000 20, 000 17, 600 1 ii. 4M ENDURANCE OP EOTATING SHAFTS. 989 00 s a> •<* 6 a o « u S so « a 00 a p IS "S n CO of a •a c3 a e d « be a Hi § o _o c3 2 « 93 a, at h ISO o a Bar annealed at temperatnie of 125° F. ; exposed to tempei>^ atnre of bath about 5 minutes. Bar ruptored. 1 Inch. .0004 .0006 .0005 ,0047 .0036 .0107 .0002 .0003 .0003 - ^ Inch. .0298 .0298 .0298 .0303 .0312 .0301 .0298 .0306 .0300 1 t 1 Inch. -.1991 .1905 .1992 .1957 .1850 .2026 .1970 .2011 .1998 1 Inch. .1693 .1697 .1694 .1654 .1638 .1725 .1672 .1706 .1698 1 Inch. .1995 .2001 .1997' .2004 .1886 .2133 .1972 .2014 .2001 Sa u Qa V ti,a u 1 1 i in 1 o 30,000 30, 000 48, 100 1 30, 000 18,100 11 si ■ |l" 990 ENDURANCE OF EOTATING SHAFTS. Test No. 36. — WrougJit-iron shaft from rod No, 3. The test began with 20,000 pounds per square inch fiber stress, which was increased by 1,000 pounds per square inch increments after suc- cessive runs of 5,000 rotations. Permanent sets, very slight at first, increased rapidly with loads at and above 27,000 pounds per square inch. After the sets had reached considerable magnitude the bar was warmed while running, reaching a temperature at 90,000 rotations painful to the touch. After 95,000 rotations the shaft rested without load a period of 4 4ays, resulting in a temporary and partial reduction of the set^. Gontiuaing the test the shaft ruptured at 129,500 rotations. ENDUKANCE OF EOTATING SHAFTS. 991 a o -a H woo «OOI> 9 ^33 tnoio OiaiQ sss t-t- w SwS ,gooo ooo ooo ooo OOO ooo ooo ooo ^o3 •? . . . R' ■2- 0Oh>N OOt-N oooow oooow ooa>M ooooco OOOOM 00 COM 00 t- 1-1 ooo o •rH o n o ® <=• ® o g o lo" o Iff o in o irf" o * imum stress gaare .o ^ ^ ^ ^ eco •eo rH M en" ■^ V p " a ?4 C4 » C4 fl 092 EN DURANCE OF BOTATING SHAFTS. a CO Sooo ooc *? oo o oo o ooo moota r-4eoa at-^Oi '^m£ O 0> O ^e ■ • - Oi 0> O OS 0^ Oft 0> O 0> O Ok OS coot- lftO« ■^t-'>*" oicooo ODOOOD cnooco ooin noioi ocno> e>oo m coma conto ■-li-IO OrH o ooooQO ooeooo CO eooD cq cQoo o ooi ooo oooo t* booo t- trPiQ oomto rjwo oot-ob t>t-t- OOt-t- t-t-t- C-C-t:- t-t-b- o?4 noo> oooa nooi o^A o>oo> ooo OOOl MWi— i-iMi-l C4S OOO iHDliH NNCI t-m W 09000 GO OO OWO oa OO o o a> rH n C4 n e>1 rH e^ w>-4 oeooi os'^co noao cBt>r- ooffit- toaoo o <-( o t-ooo t-hoooo ooo ooo ooo ^1-1-4 ^rriO rHOO ooo ooo ^oo ooo ooc3 ooo 00 ^^ iHMiH eo^Hi-H O i-iO tn m r-t cqc^el ^^^ S^M ooo OOO ooo ooo ooo ini-io OAA ei o t- ^coeo o(Mi> ■Atom (Oinm uatom cooo t^ t-.ca -._-_. c4?4Di e4eac4 nc^n mnc^ e4C4e4 ooo ooo ooo ooo eoo ooo' cq M ^ mooo ill Hi ill S (--r-l S2S sss sag sss ill III ill ill', 5S5 SS5 lO-^HO 5sa iHtHrH ESS III SS5 OQ0C4 Sss III SSS III ill III SS3 2SS SSS3 ill o^» Isi iii 2SS meato ' WW to ssg 04 04 04 Sau @Ao t3>oo Oau tSAu t^AQ Sau 6au Sao Sau tJAo c3pOo tSAtJ H. Ex. 165 63 &94 ENDUEAMCE OF EOTXTING SHAFTS. t5 d o O M »« ^ I s I CO CO , 6 ■l (6 ,£) s fc IS o "3 5 ^ M 9 09 M U tS i a «■ t S -ts 03 . ■S M ■*^ H _i g-c S. P «e +3 « -d o «a ^£ ^ «a '% |i 1 cr«3 h ,s^ g (sq pq ^ 4'^mt^ oiaaoo WfflOl incom ,j_it- -^txa amo ceoooa ooiom S5S ^Oinrf odo 0(C-*i OJNO O^W dCOlM oot- t- ooaoo o o •-< oww oi-t--! ooo o o o O r-IO I) § ooo *oo ooo ooo otpo ooo ooo OOQ ooo OOO H * ■ • 3 LA'^CO anw^ao ^ -laojo M-M ^^^ ^MM tr inio ©«« to«oco ooccoo o .0) CiOOl oscnoi mroffl D0«o moo; orao 0)00 ooS g... ,i ».. ... ... IH 1 0. 4) .§8SS- eooo-^ — '■*« ooeoc- t-osq 00 (N^ rs in ©CD iMinm rS r4a300 010>-0 ooo OICSO MOOT g^CvJW .-"t-HM CM (MM ' ' ' - CSIMCI rHWM »? . . . o .§ - § a O ISA U erfs « fSA u e^s « e,Q « e^ o "3,0 « e^ u e* « tSA V ^ o o Q o o o ^ o o to o o o o o o o n o o o o o o o tX © o ^ o" s in" o o w" in lO xa lA" 1 o 00 OD 90 OS a> a> a> a> at O B h CM O g ^ • (-1 o s o o Q o ^ *? C4 s ^ s <=) w- o lO o irf o w _ a g£ ^ o o k) e4 rgO o 3 3 J] m 2"o '^^ o U COXIM i-if-icq 3gg S2S Sa V t3A tt €rO u 6-1O «»- Qav iSa u €a u Oa u Qa o 3a u t3>0 o (Sa u <3>o < cq d 996 EKDUEANCE OF E0TATIN6 SHAFTS. -a IS 53 _d '.^ d o O rii sS M I' «5 05 6 1 1 1 d 1 - l' m s : a 1 JncTi. .0330' .0333 .0387 .0340 .0344 .0347 a Q o ! a s t a s o O Inch. .2058 .2044 .1778 .2041 .2030 .1785 13 1-^ Inch. .1728 .1711 .1391 .1701 .1686 .1438 •a V SfO o [ i CM o 3 o H 1 s a" « P en irt" o TlT 1 ii t, " s 11 ENDURANCE OF ROTATING SHAFTS. 997 a o rS S a an cS . 50 o o to CO CO bo fl 'S c3 IS .& a - be a Hi d © o '^ a o s 02 S3::- O A s i -2 \ fc € ■g i- ttf « ^ ■3 1 o h A 1 1 .s 5 1 •s s 1 ^3 t d ss^ ^ ^ m- .b-mcj I0003 t-OIA USPS t- t-OIft r-ioioo oooin t~foeo lis CD rfiOCl-H CO-tft- ^00<=> CKMCO C4Me4 Soo ooo ooo ooo ooo ooo ooo- ooo ooo •s - - . - - - ... - . - . . - . - . ... as eoeco CO t>n l>00« to-^ia tno}'^ aa-^ Aoco Q0^« kKION OOiH iHr- W •HOiH aoio .«eoN ««oa mmeo OSeOM M03(N 1 i^« OWN oo>« **3!''* oo«oeo coODir- o-^a ,«5a>«en t-oooo ooc- QOOOOO O 0« o co»n t- iHOO'-l O^OO in CO CO sss .ooo kfl— V .03<-ICM m 1 ■gasg ' a • o ,s • * • .2 ■a >si o t3 a ■s ^ -d .ggs - u o 5 'St-tTHiH o |S • • • bl) 5 'S t3 i g4 O^MIM ■g -i .? • • ■ 1 g ,g « ;^ •S ■3a u s o o o ^ o eo •J 1 s -" , ■5 B g ■h o s 1 o o ■1 *I C^ C4 c~ lO^ CO III : a inuac- •HOOi-H -» «ooo oomS r-(i-H(N oo«> omSI ooo iig -,g gooo ooo ooo ooo ooo ooo ooo ooo N 1 .3 ggseo tHthoo oaujo wt-t- uaoooo ^ A CD r-< M M OlOCO U5i*^ CQ m CO en 03 C'3 CO CO CO CO ffi| C4 CO CO • s- ooo ooo ooo ooo ooo ooo ooo • >5 ta « fi i inco-^ -^ t-oo WNCO 00 iH'^ mow 1-iociA aooco CO CON oowe ■ .0000 00 C9 D-OO omiH COOJU3 ^ CC 00 X 'a at rfSg**** oooot- ss* So CO 00 OO O 00 o oo o lis i 1 O - ^? "S t> 13 1 T-c*eD eoeoo wE*m (>• 0303 QQkn CO CO t-os • .OIQOQO knco t- o win 'tf-O w . CO (dgeocoo win-* muisio SSS t-(iHrH ssS sss iHiHtH SSIh ! t? M hJ .9 S Id 2S2&: 00 OM t-«ON MIMO «D-CO oseoo (Doco ooom oocoo h . QQ 0» 0> O « t- mi^rH ODOOOD OCOCD i-HOoa ^d ie>oa G^>^(3 coon aoc-H rt OiHr-4r-( C>1 IM o o o o o O O ^ !§ 'i e o o o o o o o o o o o o o CD i ° rt- '-'" '-^~ '^' rT in o" o t^ m r stress square nch. .o , i U " 1000 ENDURANCE OP EOTA'J'ING SHAFTS. a o IS 93 u a c8 a o '■{3 « P eo CO be .s C3 a> ,0 rn a s be a « a ^4 CD -a © © n" ■ o o o « ID m I? o ■I n m .9 « c'o M f^ " fl M^ CD I .COOO — IMU fBi^ Oi-H QO>-H t ^ OO O Or-IC t^ O ^H W o o o H-DOS> ooot- «ri2S IOpHi-H t-lr-lTH 03 03 O 0)03 O O 0» mcoM eoMeo c^cm ««« coggw OOO OOO OOO OOO OOO .00 0303 t- U t- ra cctfo Ninco eointo oooin •HMcq iOi-i^ ea-<#oo (D o o incqoo t-ooos ooco iamo t-meo mr-co 0OQ0O3 COOOOl 030000 00 00 03 03 00 03 00 0> OO O Wf-I to lO CO U3 a H* ^ n ^t:ss S3S iy3s asa sas 33S Ih^Ih i-liHrH rHi-K-H eO««-x|4 i-U3 f«* O OO 03 ODC^ eet-00 (O o 00 00301 0003 ?<] Mb-00 b-N^ OStOin MOO-* Ui O W iHM'^ ^mou tS-i^v ^au Sau Qau tSto o N n ENDURANCE OF EOTATING SHAFTS. 1001 SCDU3 OlftN ^OA O-^OO tH US 00 -dl O OO oo ot^oo Ocooo cooo «oo-^ ooeyan OOO rHOO 1-H.^O »-HiHr^ Oi-t^-i ONr-l o o-o eoo ooo ooo ooo ooo cacMM coeoeo ooo ooo OmA -HCOrH taOiOi l-K-IO ^^^ rtO*- MWCO Mi^M MCtaCfl OOO OOO OOO ooooo eomto cono eot^eo inecN '^I'vco loeooa ocoe usoaoo crseaoo -^o^ r-tQot> oxmn en a oa O) O O O A O A O O O O Oi O CO O Lu Oi d o co o ©tHOi co« t3>ou tSAu Sao Sa 1002 ENDURANCE OF ROTATING SHAFTS. o 1 s CD « CO CO a 'S CS £1 d « a bo a s> d d I ^ -* o o o ^ ^ « o +3 O 02 * 5 .2 o o ,d fR o meom iHQOOS MOJO* Q ^s<-) COr-l.-H iH OU3 OBOO OAO 000> o Mcom mmeo pqcQco CO eg CO ^W W (M fCOOO ooo ooo OOO OOO ooo OOO OOO OOO •^ fl . o o »o mcSqo 00 00 00 oot^in eo«e«<« Xt-rH oeoo ■^nto o-^oo .O^CB mco 00 Oh-lO co^o ao-HO> 1 ■% ■ssss ^ss a^ffi sSi t-ooo 3SS OOOO (M.HrH sss sss 2 a ^ . . . e 'i re) COMO ■^•<*« T-tO« Q0-*O sss.ggss fiS .o mas laoto COGOrH to t^in h 5 ID ■ssss S3S S3S S3S J3j2t2 t-eom uaooin ooo t-tiHr1 »HrHiH O ^ • • • bfi ^p 9 'S HIM ^ O ^ ^ o o o o o O o o o o o e o o "S. J o tH w- of ^" la o" o* .- o" o CM C4 ■5 H "3 S 6 Q Q ^ o o o o 1 o o o o o o o o e o S o ^- ^ U5 cT o !zi to 1 £ .3 1^- ll ENDURANCE OF ROTATING SHAFTS. 1003 OAeo Mt> tn o> oDroiA flsnbi oton cooocn noooi CO OD CO O t- O C4 — "31 CD W* ceec CO - meoco ewm lo w er-r-« tnoo0> i-^inm mcoo t-t-oa ane^ 1— oofo 030CO at-vto O'^t- eQA<-< o t> ;£ Soo oc ^^ => Owo iH o o oio>-4 <-! as ^ MCM rICMN MMW N « W i-l iH M W iH W 6A U C3rC U 3a o S)0 V tSrO u Sa u 1004 ENDURANCE OF ROTATING SHAFTS. d o IS « (1 B m cS « a OS d .2 '+J o 1 ^'' M CO of ao. n »H C8 ,£> -CJ 9 « • w-tft- o«o eaiAio IS t-O CO tn^ ^•tfie P--HCS d 9 rCiOOO f-lC-1-1 totan ocoo ■S -«ooo OOi-( OOrt Soo ® S ►S®.*.^ ooo ooo ooo ooo ooo ooo e h>j . • ■ ^ -s . (S OOi-H ••dttHrH rClHr-t gss ■«*IO(M ■^094 4 ,d 1 ooo OOO ooo ooo OOO ooo ooo ooo 1? 4-> &B d p 3 »-«. t-int- COOS t- ill lOrtoe eo^OT iHt*i(0 oc4in ^^ coin-^ M'O"* (ooin lomco in t- to i ■ssgs -Q2S OiO)0> O OSO OO A 0>0)0> ooos OJOSOJ 5 ^ . . . d ■■§ d o ■§ • 1 ■S nS •HCOf-4 l>ioco OS 00 CO -^«t- «f-lt- sss t-Tf oo 1 s ■§ ■ssss eoSffl I© too tooco (Dog voce CO too CDOO fHl-tO ^4 OrtrtrH „^„ ^^„ ^^^ ^-,„ „^„ ^^^ ^^^ ".".". e o k; a Hi o ■g oomoj 1-00 t- 5!S-g oaeo Ot-TH- r-"- '00 Hl«t- oroio 00 com ^ ^* a> ftfoSo US-H-^K cc> u e-o « fl ch o O ^ O ^ O o o o o ro O o o o o o a ^ O o o o o « o 5 O rt of eo ■* Ift" cT o" o~ *§ ^ 1-1 rH iH Diamefc chord of W ll m ■B ii IS, S liNDUliANCE or ROTATING SHAFTS. 1005 ooo oeo ggg 00 M t- <-(ce in ooo ooo ooo 009 000 000 OOO/ oeo 000 t-t-t- 000 ■*Or-( r- t> ^- ooe ITS %»< tH oo<9 t-c-t- oeo 000 x-uita "iUi-^ t>mm eot^tn 0000m cd-^o i-t-t- i^t-t- t-l>b- t-i^t- t-r-t- oDoao e4P4c4 e^etc* e>)iM OOCO OOA 030903 OOOl OObO OOn OOIO) 00)0 •neoi OD O 00 «Cf<0 CDOCO CO I— 00 010 00 10 00'* f 010 o^iH cot-US to-Hcq iA<«m ma o o oi t> o>,aa CX900 00000 r-o CDI>CO *D- oO'^eq ioi-H:q(N i-iff4?4 Q4P1CM ^2J^ »-l W (N i-mc^ iHNM QAV e>0« IS'QQ e>0«> a^^v t^Av t$>4v S^QU ^-^u QAU QpOw t3AU 1006 ENDURANCE OF ROTATING SHAFTS. P . o -a o O CO 6B B (S t-t- r-r- t» C-l-tT ■J M-MN CKMCM 94 eg 04 IMCMIN C4ci?4 fgOOO OOO OOO OOO OOO OOO OOO OOO ggg ■§ , ^ P • 13 '^-'00 OiCO-* o-^-* oot- OOO) 00 CQ^ moi'ifi eco-vfi lao t> ^ • ooca W»*i« uacoo r> t*t- -OOO i |SSS OTOTOS 222 2 A A aoj 2 SSS SSS SSS sis *? - ' ' . '-0 ^ 1 ' .Smw o;)00i4( §ss ooot> v-ISl^ nh-iA '6- eor-oD ■oooo OQOO» ooo ^nn s -C0 3:S£ (Dina (DOp-I <^ffo O SA U eA O tSA <^ a-o» eA U G3>o u tSA « a o o ^ O ^ o ^ o DO o o o o d 3- o o o o o § o r-i" ef M~ ^~ lO- o' o- o~ is o ?H OJ ^ 5 B o M CM o ? .a ■I O o 1 § s o '1 o 1 § § o .h" w iH" r^" r4- Ift o o i2i i-l ai T .o F ENDURANCE OF ROTATING SHAFTS. 1007 8 I s -s ■!l I •§§ I Is "i O O " Sfe 1.9 S'S s s ©"S «> * d 5 ■grs I'a li |g S - ssss ggs C--* ill CMN W 00 VIA III 0300 ill rHNN iii sss jrftu QfOu QAo qau ^rsu t3>ou t^rou csr^u QtOo Qau Sav 1008 ENDURANCE OF ROTATING SHAFTS, 1 e<-i © g W9 g o Oa a 5 -*s ^ e3 £ m *l "S ^ jo 1 rt M S n (3 « . gui a'i M o -gi Is tala PJ+3 ES^' n .^o- eoiAO t-t^w .ft'opDO ggg «t-t- (Ninoo usi-i'^ 00 b-'* ww^ s ■* Wth ooo ooo ooo oo3 SSg sss oo8 s g o oo ooo ooo OOO ooo ooo H • • ■ i IC4 CJr-l W CJCJN r-<(N(N ^ ■ • • g P 1 1 e« O e-o w e^a-. o e-o o Srfi « e^ « €•0 u eSiO u (dA V t^pQ U d O o ^ ^ o o ^ o o o n o o a o o o o o 1 5 O 5" 3' s" :; TO" s s s CO "% 5 H s ■s g ^ s ^ e o 'O ^ ^ ^ ■a 1 1 rt" o o o o ,o o lO' s ^- § i» g ,„ i IS M - '^ a ^. PI Pi ENDURANCE OF ROTATING SHAFTS. 1009 m 111 OMiH ill 0030 0038 0038 e9i>^co- SSS gss ssg ooo gS8 ggg ggg ill iii {M t- 1- COO) 00 5SS -*oco sis iii lis im S3SS ooo ill iii lis g2« e-o o e^ u e« « ©rfS o e^a u 8a u €>Q u tdrO U «-o « t^pC Q 8« o e,o o H. Ex. 165 64 1010 ENDUKAtiCE OF ROTATING SHAFTS. 1 fe in , "s s g sj g as Oi a 3 1 +3 -v> e3 (3 (D M ■a 1 1 ea % s 1 S 1 ig §t ^^ S^ cq w , t-coirs t-(Mio °**^ffa OOlflh- ^OOM Mt-<0 ^mo 0-«5« QOOOOO tr-ata t^t-1D O»O)0O .H O O •-H tH o tn m ?! S^«o «oo«o mta tr- t-r-gj . CM (M C^ C'1 94 PI MM W Cace OSOJOl »Hi-li-( i-lTHr-f s '. . . ... o 'fl >^ 1 t3 ^ iOLn ■^'« t» Ift O CM 'a E^Nr* r-l(M.-l rHrHr-( 0<-lrH m^'^ u S ' -e^c^^ EEt: S5S sss C-t-t- sss Sc^S ^t-t* "p.?: @ ■% t>t-(t-l pH iHf-1 H .-HrMrH rHr-Jr-J 1-1 i-H iH rHA a rd ^coei -^o t- iHOOlft ooirtw lAIXM Clin CO ooiat- tvOO iHOSOO V (NOiH OOr-IM -o rfjooo ooo OOO ggg a^g SSo ooo 1 ^ UniMM (M(NW CKMiN M(M W rlMM MCMM ^ fl ►5 > • ■ * 1 (5 d S n O Sa u ^a u e-a o e^ U tSA td e* « Sa « e« « dA Q (Sa U ^ o o o s ^ g § g g g g g o o g i .2 S sf «- ■^" IfS to" D-T 00" n « m- o o o o o 2 O o §s s s H tH rH f-4 T-l ^ .r-i tH rt »H o H 'K O 2 s O g^ o ^ ^ s o o o O o O o 1 o- O rH rt r^- ■"• rH Ifl- 3- m s i- ',■ I - " a 3 •*« ill Nt^a SiiiS -"• --- -:— CO -4103 mooo ineoa iHOOOO SI5S fHr-lrH SSft S5S sss SSS (oeooa 00 CD 00 »«» • ■ • «-«. Qa V 8a u e^ w erfs « dA o ^ ^ ^ o o ^ ;« rl w ^ ^ o ^ o * s 1012 ENDURANCE OF ROTATING SHAFTS. © Id s> a K e3 a !D fl O « l-l- t- t-c- t- t^r- t- c- c- to CO eo o ?4lMe4 c^llM(^1 C4(NIM CM W(M ^^ ■oww -ijieooo (DrHlft lOOCD iniftco t-F^O w^-. „»_, ogjg V ■vcoto -*(NO ooS ■^CMtO ■^JtCMSO '3 OiOiO) OOO moo OOO i ^tHf-li-i r-(.-ir-l '"1'^.'"! rHr-iH rtiHi-H "rHiH rH^iH H ' ' ' 1, v ■* eo w "*0 lO naofO «■*'» ■*oco o n a lo CO o fO fd t-no CE ■ o o o o o O o B ^ e " '^ '^ " lO O O to • B is -o ' a- 'm " a s^ 3 n CI d ENDURANCE OF EOTATING SHAFTS. 1013 a a ig (3 O t^kO.-l (Mcom ill ill om2 ill ooo ill ill ooo OOO III OOO ill ill 3gg ggg ill ill. ggg COC-QO occoo ill (MrHCQ ©oo rHrHrH gll aooiOi i" SS2 00 1^ CO evince III TjCNflO ill iii ill OOrH SS5 ^ t-t- SS5 nice t-c-c- m t-ca III Sg3 SS5 «? 3COO> COO t- CM t-H I- O M n o o m 'O o ooi-i -t<-H t-( i-l O O) 03 )-( ^^A^ 00&l<— I -H IM i-H ooo ooo o) o e ooo oi a o ooio os o o ooo OJWCI -HCqW WCMIN CIMCT i-<^« DlrtM t-15MW e>1ff401 09 09 09 0)0 erC U Q>Ci U iSrO t e-*o e,c« e-cv e-o* 1014 teNDtJRANCE Oi' EOTATlNft SHAFTS. T3 a o i if rS CO g «H o 1 g g -§. C9 l» s 10 ■a 03 (D g e8 a «s Sti *;§ 1'S i! 1^' .moo c.-*o ■^eSkO Mt-ffl TKO-* iH •-<,-( «oco COCDCO cococo CDOO oaoo o e^\ 91 C4 DIIMC^ ^94 94 C^ MC^ OIC4C4 e4c<)e4 +3 (gOOO ooo ooo ooo OOO OOO OOO OOO c-t-t- t-t>D- t-L'-t- c-tot- I- to t- t- 1- 1- t-tot- t-t-t- 1 rt^rH,rj( rHi-(i-* iHrH-H i-HrHiH —ir-^rH r-ttHW r-lr-ti-l ^ . . . bll I-! •d MOOO eicotn m(O0D ' tMinos COOCO eacoeo If OCO t>«OiA OOO in sss ncbr-i r-iOrt l>»HrH - t- O N W 1^ O woow 1 fcJo O O ooo ooo one OOO OOO OOO WWIM KrHW ooo OOO o ■p UCvllM (3a «> Sa « eA« a^s « Sa « cSa u Qa U a« « ttA « d ^ o o ^ O o O O O o s o o o o s fl o o o o o o ■1 "8 5" ^" s" S;* s- s- g- s s s -S B (H 3 .r o o o o ^ o o g g ^ 09 o o o o o i e o o o o e a o Sao Sa u So u -^ Qa u 8a u tSrC u tiA u Qa t;^ €a u c^ a u Sa u (3a u 1016 ENDUEANCE OF ROTATING SHAFTS. a a • i-H a o I V * ^ CO o o ■ § s ^ 1^ O o O 2 s 1 "S t< s. % a § % -*=i •s rt c3 s 5- u U . & s % 0- s % % S n is If S A e3 4) n < o oo ■O M W o-^n oaaawj ooo ooo ooo g oo o o o o ooo ooo ooo ooo OOO ooo •^ ■' - - . n P5(MtJ< Sg£ o t- t- OOOO rHOO ^ ■»*lt-l 30 «3r-(m WW in a L-^OUS C-r-t- t*e©,c- i-r>(o I- t-O 05D50 o WIMN PllMlM MMC* « WCM M (M -M P 'S T-iflacjo US-* 00 3PS oomin t-P-OO ^OOift t-1-frH t-THM O 00 M rH -* W « 00 to 00 t-..|>00 r-S3 0O •a ffl esm oao»o> OaOOS noan IB 1 "5 'S C«rH-< rH^ W iHrHr-t rHiH.-. .1— -H iH CM ^ -H g ^ 1 E3 OO^H-^ 'tfOO-H Tjt-^JlOl ooiAkn o Mu; (DMB3 MMlft T(ii>eo woio U t5 m CQ CO i-H O tH C O -H gsri O O) -H CO S4 C3 ^ ■s sss 5S^ sss luwS Jh^M ESS ss;-: s § ^ • • • a h! .a £ ■s . ■^^lO Mtoe'i t-.wt- ■*in o *f OS X s ■ oo»o ODNiH O0(Mr-< e^ o (M 00:0 F< oao oaoo Oioo sss sss h ■fl « (MrHW rnea w .HrH W tHMIM ff4WCM r-lM W WfH W ® ^1 a b 2 i3a « 8^ o SA U a^o w ttA CD erfi w e^ « n cgE-oo ect-oo 00 1- 00 t>r-oo 0)OC3 0>O>O> OOffi C3A03 ■^«C0 OOMC- 00»«n ^Cftlft IMO^ ^^o— ' oe>H oOrH oo— 4 ^o*H t-D-t- t-t-C- t-Ot- I— Ol— t— t-t- n CO o ^ 3D e> 00 At- t- 1^- ^J -^ ro ep ocn>-i ooffi" ff40>^ t-.o « OS C3 5 ooo omo 009 eaoo a d-,o e s> is ^ -u &c d Hi a d V o © d" o 2 o -a 02 ® 5 .So o o a P4 ooe oo o ■^COt- »-H« ITS ifl -^ Qoo t- o . c>j ^J c*i M fM c-i )< o 3 o ooo cj o o «.« OS eq ^ rH m — i o t-t-t- t-t-o t-t-t- t- t- t> c^e>ic4 C4e4e4 wcflpa c>ic^c4 ooo ooo ooo ooo ■* « ?J CO Ni-I ■*« >H b- t- t- t- t- t- C4IMC4 C4 NC<1 OOO ooo I>MOO . a o a> F«£ o ^a> CO ^ CO r^ lO CO 09 OJ Cl A 03 Ol a.-2! ^^ KIQQ CD eq t^ i-lr-(rH sss sss sss sas ssa SS2 saa O SiM CO O Ol ■ o (=> ^ in o CO PCS o o o o^ o ostDo tttOim laoiOi ■^us^ iH o) !D '*mco 000.0030 ooo CIMCM (NiHW CM094 OJON irainrH -"rfltfOO (M CO CO omeo laoto ooo ooo OS O o NMW C1(NC4 i-(NW tSrO u i3a ;) 8a u Qa ^ Sa u tSA u <3a t ENDURAifCpi OF EOTATiNG SHAFTS. 101& I. ■§1 ■a .. lo a a .gg S - . ■a" ■2 la « S S f5 t-Ot- t-t-tO OOrHM '*»e!5- ONt- ^^2? OOJOO Mt-M CStAia OlAt- rt'^J'M MOOO IMOr- oco«o ^-ht-h oQ^m «^w e^iiAec ooo (MriiH nc^im o«c3 comw t-inm om-w «o co « ooo ooo ooo o^o ooo ooo ooo ooo ooo. ooe ooo ooo ooo ooo ooo eoo ooo ooo eoo ooo ooo ooo ooo ooo ooo ooo O ae>r-t 74i-liH U3CO*4l o-<4mt^ «OU3CO «eot- (0COO t-ot- s .IC4 (MNCM eMcgpfl (NMN •J 1 ^OOO © o o "^ ° * OOO ooo <^oo ooo OOO OOO ooo ^ (D P ■s •^OiO) «*DO ^SS ««00 t-oto «^^ (KI(OTO OlThW t>«OC» ^wo ^ -c-ea t^ t-t-t- ■3 >9) araS omen OCftW CO 1 |--". THrHi-H WiHrH i-i r-ir-f T-liH i-H r-ii-liH -^iH 1-1 .^ t-H M f-=lr-«l-t a 1 ■O ^00 0i 0(000 1-4CO A coom O!t(<00 CD COO »nm« or--* oct-os . OCJO o oa o tk Mm (N(N=M W-*-H ^^-H --■o— * wo — < ooo 1 ^c^eot- rt^S Sl^^ t-jt^t^ c-x-t- t-t-t- t-t-i. t- 1- 1.~ 1 O^iH W iHMrH f-liHM rlP-iH ^H r^ l-l w^ w r-.i-'rH ^ - • • ' a 1 •s OOHt 00 r-imVi ^ t>T-l B2o e4eoff4 oo>« t-(MQO 'WMO QOOOlft ^■^U p O -^ rH l-tO-H ^OCM INC^IC4 WtHS OOO ooc OOO Soo 1 ■fl tgC4 www C^Pl w CMMCM eacMM MCflM cuesKM i-INM H * * ■ s t= 6 i a O e.ci w ISA U IdA U t3.o u ^A* e-o w e-o o Bna U Srii » tiA U o o o ^ o ^ o o o O o o o o 1 3 o o , o e o o m" « co" tH lA- uT t*r oo" "S c- CO CO CO 00 OD 00 00 ' s S H 2 cw » S > o o o O o o ^ o o o B 1 o } o r-T rH o o rA ia~ o o imum stress eeO S'^ M p n a s« )^^8- o« 0^ "« 1 p- ENDUEA.NCE OF ROTATING SHAFTS. 1021 I I " q "^ P s^ " as §■1 §1 It i-s 1^ ^^ ill III ggg ill gg§ ,oo o ooo ooo- ill oc0'n ooo 1 % lis ooo ill ill ooo oeo S-SS ggg ggg. ooo rHMO ggg 009CO tt3 t- t^ OOC3 ososo mcio 09 0>0 gSE5 ooo 233 iHi-lrH baaa ggg 333 eocct- Sis t- t-S- f-II-H iH 5SS £33 ss5 o^-m III III ill iil CSS OoS sis III III 0OQOO3 III 00MO3 III OCT 00 sii ill tSA u tdrO u Sa u Sa u €h3t) €A u Sa u tSna'u (Sa «3 4.o u €« u S^ c4 C4 d ea c<) (N CQ *2 " 1022 fiNBUtlANCfi OF BOTATING SHAFTS, s d '■^ a o O I. e a >« r o ^ CO to d fgoOO «o oo sSooo H • ■ • ODl CO (Otom ^t-N ^'^tn t>oiA^ cDco^ OOO OOO O^O ^OO 090 ^oo ooo eoo eoo ooo ooo ooo o> t-t- cecoto eoiHO) coiHO eot- i-iffar-( o c^ u oo tk t« t-t-W t-OC^ t-l^(0 t-t-t- C-CCt- I— o»t- e4C4C4 CMOllM eOC4C>1 MMC^t OCIW SMMTJ OOO ooo ooo ooo ooo ooo h:£oo A ■ O M t-iiH ^S ■ • • I-H03 00 o> oeata ^ ea eo oooea oeoiA aoo r^ e> co tf~fia »-IOi-l ^OiH i-HOrH ^OW OOlH O CO O A CO O t-t>t* t-L-t-- t-D-t- t-t-t- t>C-t- (C-Ot- tOOt- 3IA Hja 3 i-H 00 C o cc m -^ »tA t>ooe oome 0>t-(m- eooc<« c^ ?a C4 coe^p) ooo ooo ooo ff4C4(M e^CMC^ C^eMffl'' (Sa u Qa u Sao @a u tiA u (Sao Oa u Qa u Sa v X a " g "« P. teNDUBANtlli; OF KOTATiJja SHAFTS. 1023 § « a a o Q CO tD a 1 d « a ■B a d u © a p g •a «2 .-, o O & « s o 1 1 1 1 s 1 _I-*=D(D o used «eoe sss «o«« iOOOO T-I^CO o tnce .«iooo iMceco ocoo •-4C0 03 »T»ii-« -2 o^^ 0<-(-0 oow OOO ooo ffl Sooo ooo ooo ooo ooo ooo ooo ooo ffi H ; « sss rHOGJ M^O r-t-tCS OrHCn ■^Or-( oe^o- ?.Kt- t-t-L- '-« i ODOM g^g CIO tn g^^ i>.nt- W*QO tt< t-OS T^94CD i>eoos 'a 0900> cimS b WrHM W rHNN rHM« rHWM. M(N W 94 CM CM r-lCMr-t tq ■ ■ • 1 P . i 1 8 e-o o 8A tt Qa o e>a u tSfO U e-a « t3« u QA tt o o ^ o ^ o o o o o o o r^ <=> o o o o S p iH «" m" ■tf w' o- o~ o" 5 w * H ' o b Ch O S t o ^ ^ o o g o 1 "B o o CO o o •f r-T J o «- • o" S S EC s»s .o 5 d D C3 5ft A, \ 1024 ENDURANCE, OF ROTATING SHAFTS. M cS a , M 'S'3 55 .709400 m-44iM (OCOtO UOOO OOO OOO ifOOO OOO OOO mt-o QO a>n ,u3mi-~ coc-t- o oi 1^ SCO CO O-^O) AACD 00> OJCnOO ODQDOO n o o> o^ Qi A OA 0d o QotntH iM o iH koaoo ot-o b-coo ^eoo) fgS»t- cbcDD- ^t-C- l-t-t- t-t-t- t>t-t- sl'^'^. '1'~3'1 'I'^'l "^"l^ '^'I'l ^'1'^ t-c-o t-t-t conn V-oo oocotjh mff4o »-000 OOO OOO OO'O OOO OOO ft^O >-tWO OJ — o noo OOO OOO -icoso» enospa CO t-oo oscso WOO 0>oai "S3 b-t- 1- COC3SOS oo^co O-Hr-C L- t-t- SIS COO o tn(M MMU5 MCO-* ^MCO -*3 OOO ooo OOO & i2°°.°. ooo ooo ooo ooo OOO OOO ooo ooo OOO H A oooo «t-« (31 i-( o> (M »n ■* ffiflom ooo CO AQOCO L-Q0(O 03 OlOt- s ID fi ri OllOOJ AiHCO tOlOCO AHiH ^ ^t-t- WOO iftTjiin e vn t-m.H ^ «sc-t- r~t-t- oootH t-p-o> 00 t>CX) t- t-co t~ t»oo 00 C-OO 09 ■s «SS3 COOJO raoan oioo i-lp^r-l r-(T-ilM 23S cneaos a>t3»a> 0!mo» ass Sss 1 o a t? ■ ■ ■ • . • • > • ■ P 1 "o; O 10.-I o-^os t--*0) c-cot- 0JO3CO looai-i MOO 00 ooom iH t-t- oom-* • O O T-( ooo OOO Mr-I»* 00(N ^OiM OO .-( iHO-H OOiH 03 ■SSS5 55S' 5S5 SS5 SS^ 5SS 5S^ p_S tHrHiH ssa ^ ■ • • . . bll .9 1 CO coco o = S KflS ggs Oi-lrH iHusin irsooo inc^n fflr-IJO occo .t-0(M N.-i,-H t-i-lM 1 ooo OOjO ooo OlOO OOO S ■aiHNN MN(N MM W MrHM rHM oo eo o» OCOO Wt~0 tOI^-tO Ot>Ci3 cac^CQ CMC^C^ CTiNM CI WW ooo OOO OOO ooe t-t-o ooo 0)Tf tr-aooo IIS t-o>o m oeqe t-t- 1- ||S SS2 sis c- o t- PSDie csiAb- m^co noca Mo^ coeOrH 03 OOO 03,0 tHC4C4 c<-[m «M W ^ino ass (D Hea '^■Htm COCMtH OOM C^?^t-i 03 ooe ooo iHMN C4CSIC^I WIMCM <3iO V QrO « 8a < ^AO QrOU SrOQ ^AtS QAU QaU BAU SiO« 1028 ENDURANCE OF KOXATING SHAFTS. o o JO 6 d o « a to CO sS <1) d « "d ® 6: -4-3 fee d s d © o d" o o Cm O (D Pi eoOTt- .0)03 '9 rfSosoo o 1 0*-(lHrH ■-(iH i-i l-I l-H iH i-i iH rH -- i-i iH § ^ ■ • ■ f t= ' (D ■s « ^ eOTjCC-c-t- t-i>t- t-t;^t-j 09 ^rHT-d-l rHi-*r-l THrHrH >? • " ■ bt ^A H 'i ■1 OiiHM QO-^lfS ^ iH CO Sft*^ COOiOi .osoo OlOO OOO hiSrooo 03 00 ooo 030 ed Or-l(MCN r-lNCM (MNCM tHtHN MrH(M 1 O H ' * ' s t> g 1 3 Qa u tSA U QA U e« o SrfS O a o o o ^ ^ o ij o o o o f^ o o O ' in 41 o rH" CQ- «■ in t-' -§ o *D ' * H to o M *H o h S O o (3 o O ,J2 O o o o «> o o o iH C4 eq Jzi s ^ to to g Sg ^^ £ 1" f A 6i " S - 0? ^ Xi ^ ?? ti -JT. u 0) § h! ». ■K> <0 .«? 4-3 «>S CJ Si a •11 > ' Fl ^ ;4 I ® 1 ft o O ■* !zi o '-«2 es -fj .© h «w O -a « » p- Oi ■a o ' oi iS g 1 .wcia-H) Moeo NOl- CMfQO eo t-ao ta OtHO OIMO ooo ooo ooo ooo ooo ooo ooo ooo K Is • ■ ■ ai attfici N^» ass sss ^mto r-tDl(N -1 rfSOOO ooo ooo ooo ooo H (D n •a iM^rt CeOOrH ineow 00t- b-l>C- t-ot- t4 •d rfS"^ t-t> t-t-l- T-HiHrH D-t- t> o 1-1 ^^ ■ ' ' UD .9 T-; — i rH [— m — 'OOt^ t-(D0O So3 T*<00 ooo nS rfj o oo ooo ooo ooo tl as ^(NM(M rHWlM 04(M(N (MMIM 1 O ^ . . . t= 1 ^ arfs « «rfa o ^A o SiO U dA o cl o ' ^ ^ o o ^ o o fl o o 1 5 -w o rn- w" «- id" ^ H-' g O u "S g 1- o ■ o o o ^ 1 a o o o o o o 1-i" i-T rT n « [2! » S is ■ o a 11^ is 1 1^-^': H Si=< 1030 BNDUKANCE OF ROTATING SHAFTS. a © TS 3 ai eS 01 a w fl o 5J 4 ass WW* MCS'-* sss eoTfto IOtKtH o Soos OJOO> 00003 ooooo ooaoo 00 AOO ^0500 OJOOJ OOffi OOO OiOiOi 332 sss ro WlHfNrH .HMrH rHlMrH rH tHiH g "s 4 • • • . . 1 P ^ in t- to eqatH 00 t-00 ot-eo C4U3M OSOJ-I weoeo r^ lot- 00 win fS ^d . t- t-t- t-i- 1- o t-co l> t^o OIXD inujtD in wio us eoio •^(oin i ■SSS5 t-t-t; ot-r- ss^, SS5 S55 t-t-t- rHi-irH Wi-lrH ass ,S ■ • ■ o >^ h^ n £ Td WlOiM eo-*^ «5-*lO ■* trao m2 w 00lOr}< ^ ooo ooo rHO W Id 'SnSm ooo ^^^ ooo ooo 1 1 a (NMN 6MMM W o> o -2 H iH tH m <« O FH 'S g g ^ o o ^ o O O ^ ^ rO 'S o o o o o I £ © FH- i-T ^ «" us" o" to" ef -tf" ^ g A a» o o i-t tH t» s 03 s .o 3 1 3> s h " s is 1^ s 11 ENDUEANCE OF EOTATIKG SHAFTS. 1031 1 § ^ -tS <3 -43 & ■-^ rd *S i S a ^ s-s Si? 5 ca ffij ^ =§ 1 5 1 •d 1 1 tH Pi A s g h s -P M w M^a moo lOJTf'^O ■*i-IOJ -HW« CO w« coin ^ OS WMCT CQcgiM C4 W W «lN (M WCM c^soea WWW eqiM w WCMM 000 ooo 000 oo-o 000 000 000 .... sss mrHW C4 t~Q ■^ t-00 oc-a ■*■* w CO-* CO rHCOW r^Ht CO oeoM 01 CO CO t>rHrH Sg§3 OOOQ O»O3 0O 0003 OOOl 0-0 o> Soro a>o>o;> oosoa ooo» oo» AOa T-Hr-irH WCJrH W-(Mr-l WP3 W W.H r-l WrH i-H WrH THMrH gSSS OO^tfS tONM Wi-JiH ^COi-l oi^a, COCOD- eoo> oa tOOiOi ■*ast* 1-1 COO OOCO cc t^co CO t>0 ooco t^ t-00 t- t-t-I> I^t-t- D- c-c-c- t-t^S rHWrH .-(.H -H .Hr-< W .-1 rHrH .-1.- iH i-HlHr-l rHrHiH l-lr-l?H JhSh 00 b-iA aaoo^H -*00 00 IA(£)IO -< * * • * • • ttA ^A (3-0 w SpO tt Qa u Sa Qa u Sa eA Q 8rO «AO Sao ^ ^ ^ ^ . e at cf M ef CO eti ■* la- «r iO 00* eo" ^ «o~ 1 § § " § S^ § S § 51 s s ^ -^ ^ ^ ^ oa iH r-t fH >H 1-1 Ui s g 1032 ENOUEANCE OF ROTATING SHAFTS. o to a es a o '-13 o q=i 4) CO 9 ■i-t n ,D IS « « P as 1-^ 5 <» g a ft © o q O o -d ft 00 o m A4 M 3 .CT M CO iHinco «3 Wr-t la wo Mt-rM US.OCO C5«M tHOOOO lOMrH i iHOO OO^ i-(Or-l iHWiH THr-ieo eo^-H OMCM OOO OOO OOO OOO OOO OOO ^ goSS ooo OOO OOO OOO OOO OOO OOO OOO M » ^^„ iO-*-* tD -^ -^ «Mm 3«^ -*«lO lO-*-* OUJIO couaco MOJ .— MMM t-t- to t-* t^ o t- t- «st^ t- to t- t- moo tao t-t-t- 5 o iHrH rH »-llH T-H iH iHiH iH i-H i-H iH iH tH iH i-1tH r-l i-l»H ^ • • ■ bD h\ q 1 'S C4M10 rHiO t- IftrJIOl in^oo So°° ^OOO e»^»fs (OiHrt meo'a V e-a o i3a u «A U "^ Q O ^ o ^ ^ o o o o ^ o 1 ^ o O o o o rJ" e» o S rH tn .o ( fleo 5& ENDUEANCE OF ROTATING SHAFTS. 1033 1 s ■4» «B -♦a & Id 85 tff 1-9 *1 *•§ aB J «§ & 5® '° , 3 ■0 H 5 s5 % •s g 1 §■ K n B oco to ClrH r-l CO O C4 oooHi i-ioaiH 09WC0 Meism N^DS lOTtllO ^»U5 ^ eo t-t- ao t-(o D- C-OOt- b-oOCO t-oot- tOOQt- t-D-t- t-c- t- t- t-c- t- c-r- t-t-t- D-t-r- t-t-C- t- t-o t- 1- 1- iH— (iH rHrHin 1-tr-li-l r-trHrH iHrH i-H i-lrH i-l i-(r4iH rHi-ti-l r-liHrH ^HrHr-l •H>HiH thSS ^^ WiH r-<(0 0> ^OC- 03oa t- Q0WO» ffllOTfl 0<-to OOO OOO OOO OOO OOO OOO CI OO oSS e»oo OOO OOO a>a'=> OOO OOO OOO ^64(71 N«rii WMW DIOIC* CQc^n i-(e«c ttAO ttA U SA O Qa o ^A «3 QA O O o ^ ,^ o ^ ^ ^ ^ e ^ o o O ^ o o ^ o- ef «■ CQ- ■«*r kT o" tT 00" CO" c 33 S rO Wl Si fe- ti rO .4 5£ 1-^ !> ■» a> 5T, rf a C !^ © © a o o -a £1 02 05 5- o © I'D © eS 1 ■ 1 1 1 1 § j 1 1 m n Inch. .0004 .0006 .0006 .0019 .0118 .0110 .0189 .0128 .0127 .0127 .0076 .0119 1 Q Inch. .0296 .0298 .0301 .•311 .0309 .0308 .0308 .0310 .0309 .0308 .0312 .0309 0. 0) ■ w a a u 1 S 1 t3 Inch. .1999 .1996 .1998 .1905 .1945 .1954 ,1926 .1928 .1935 .1941 .1928 .1943 1-; Inch. .1703 .1698 .1697 .1594 .1636 .1646 .1618 .1618 .1646 .1633 .1616 .1634 1 t3 Inch. .2003 . 2002 .2004 .1924 .2063 .2064 .3115 .2056 .2062 .2008 .2004 .2062 1 5 SiO U SiO QfO 6a Q • § 3 1,000 2,000 3,000 77,300 1 3 1,000 1,000 1,000 74, 300 1 H " a .0 'BO ENDtTRANCE OF ROTATING SHAFTS. 1037 Test 'So. 80. — WrougJit-iron shaft from rod No. 6. The shaft was initially Seated and maintained at about 200c> F. during the test by raeaus of a gas burner, the heat of the shaft itself not being sufficient to maintain the above temperature while running. The shaft made 5C,C00 rotations the first day of the test, it then cooled, but was reheated the following morning before resuming the test. Eupture occurred at 129,600 rotations. 1038 ENDURANCE OF ROTATING SHAFTS. d o £ 3 a: cS o 01 (0 •to CO sc bo a to h eS rH 0) h. X> !M ^ 'a a ai "oT g K 0) S ja 8 4J a 9) S I-; o ». ti rt bO*^ '-«« a ©5 i| » ai-*a 3 •=S K S a if ■ia -Sg II .. •a 1 1 .■*H<»o iftm-* •«*t-T-l lO'^iO sggs (S riSOO o ooo ooeo e>j^i-i -«2 u oo o o eo ooo ooo 03 H * ' ' • ■ • ooo eoo ooo 03 c3 O .-I (M- 00 t- M mc . . . . . a 1 p 1 QA » tSA U QA O ^ A U tgA U a o o o ^ ^ 09 O f3 o e .2 S o o ^~ « CQ- oT -*= C4 J B »H O n o fe g o o ^ O ,£: s o o O a o o CO g o o iH" •-T t-T S" ^ S3 CO ais .o p £ 1 . Si "« ,« 1 ENDUE AKCEl OF ROTAtlNa SHAFTS. 1039 Test Ko. 81. — Wroiight-iron shaft from rod No. 6. Diameter, 1". Speed of rotation, 400 per minute. Length between end bearings, 33". Tested under 40,000 pounds per' square inch maximum fiber stress. The shaft was initially heated, and temperature maintained at about 210° F. by means of a gas burner. The shaft made 42,600 rotations at the close of the first day. It was reheated the following morning and the test resumed, and had completed 129,300 rotations at noon of the second day, when it cooled and rested without load one hour. It was again reheated and the test resumed. Eupture occurred at 176,100 rotations. The shaft was badly scored at the middle bearing during the test. 1040 ENDUEANCE OP ROTATING SHAFTS. o 13 a; u a OB c« <0 a to a o o IS 'U 0) fl CO CO Ol bo a A oon oAn 0)01 e A oj 000s N i-H tH CMrHrH CJ ^ »H ftt- rHOO b- ca t~b- oeto O O) 09 03 C3 0> O 0> 0> 09 01 o otae4 0x0 i-H 00 n a CO at a> 0)09 0)0)9 Mojoo *-(ooc- ^o»m »H«Q wiHw -^cgo »£5« SrlE: Sr^S raOOQO OCOOO IflTK^ IQ ^ ^ i-t^^O i-Hi-IfH t- C- t> CO IT- O (O t- CO 000000 oomoo ooQOoo oomao oooooo 000000 t-t-t- t-t-t- t-t-t- 00)00 eqotoo (MO)eo OOA OOIA 00)0) OfflO) 00)C& 00)0) eiO(0 CJi-lrH 64 0)04 iH W W t3A o Qa O t3A O QA O tSA V tSA tt i3a o Sa « ENDURANCE OP ROTATING SHAFTS. 1045 fi •¥» a .s IB g ^ O ri 5 13 ^ 3 s § 1 fi 1 fi 8, ■ 1 1 1 "♦a 1 1 H ^ ,B .a S e H « li 1 s 1 9 ' s ■ a .9 1 1 i t 1 Pi 1 a g a Q K « e tH H H B EH m Muain t-O0> rtOl-J oraiQ COOO usoikn MO-^ o"^ crtrHrH •HfHCO o o o OOO eoo ooo oeo eoo f ■ ■ OOO OOO ooo ooo THiftO „g« OONUS t-t*r- aDto<« »ot- isi 0(D<0 cooeo c4-eic<4 eoc^M ooo eeo ooo co^^ gggg -WOO gSE: 00 CO CO t-o-* «■«*« 0»-*i-l ooo COCOr-l ooo §ss cnoe ■ • • ■ • ' rHiHM .-ItHN a>a\r> ae^ta cowo ooa •^rHO ■*'*'0 kOCDCO OOM^ naa-^ mo ass rl WN . . ■ r-IC4ff4 > . . WiHcq QA Q «A « QA t> Sa t> Sa o e« o Sa o o o ^ ^ ^ o o ^ o s s § S s g a" 2 1 s i i" i" i e g o ^ e ^ o o O o ra e o rH o a> o o s o O e> CO rH C4 1 C4 •n «-l ^ ■a- « 3046 ENDURANCE OF EOTATlNQ SHAFTS. a o "S s % 7i s ^+^ p ^ 6sfl ^ -^^ n •«* suO'r ti ^ S-l -« S =s gl S\^ (^ T3 > « 1 5 & 1 E '^ t-i "S cS 05 « « m h c (U Jj "A ft-g 1^ f-( (^ o e.ci « e.o tt % s CM o .a a 1 O H o o o § ^ 5 S S 3 o o o § s s S i 8 a a 1 3; 11. p •-« H 11 r ENDURANCE OF ROTATING SHAFTS, 1047 o rs « . ^^ a B a o -^ o « Q CO eo 0? bid P 1 a a> a (jj. s> be a Hi (4 o n o O e ft OQ 1^ . as 5 .So o •s 1 Sar raptared. Water was played* on bar by hand hose during the test. Tem- perature of bar remained unchanged. 1 Inch. .0003 ' .0005 .0004 'J 1 JncA. .0297 .0300 .0298 . g 1 1 1 ID 1 Inch. .1995 .1997 .1999 o Inch. .1698 .1697 .1701 1 1 Inch. .1998 .2002 .2003 8J5 O •s 1 1 i" 1 § o a: a' 1 ffo 5& '4i ^ 05 Oi 6 ' o a an cS (a a _o o 33 1=1 en eo ai. bo d c3 0) ^ Ti , a OJ rO Ol SS X! o Xi V 3 fed ■^ d 03 ^ h^ d) a o o a o 'O O (D 0) ® 5 o '^ 1 Bar ruptured. "Water was played on shaft during the test 1 EC Inch. .0003 .0005 .0004 Inch. . 0294 . 0298- .0298 1 a m be a 1 £ ! 1 3 p Inch. . 2003 .2004 .2004 ' ■s o Inch. .1708 .1706 .1706 1i , t3 Inch. .2005 .2009 . .20P8 i tSrO U 1 ^ ^ o <0 o a a- a. 1048 ENDUEANCE OF ROTATING SHAFTS. § £ a CD ea a IS a o ■-S ® ID an a a ■^t-«D t-ioa l>«00 00 us 00 |1 OOO ooo ooo ooo ooo ooo sss 1 ooo OOO ooo ooo ooo ooo ooo ooo 00 rH niH ra OO Oi CO ooo NOirH SSS8S OMO c4eao a ea ooei^ oDooen otaaoa Okosa sss adaoa o iHrt t-4 rH •-<•-< r-l-H W r ooo ooo OOO OOO o^o ooo ooo ooo ©oo ooos ooo OOOl « •^ i sss ^SS sss C-QOt- sss OOOO t~ sss sss SSS . . . bo »3 .5 '2 1 ns r-^o ia-^a> ■^inm aSo ill oSS » oootn oi o>» . 'fl •^ ; A ffia sss 222 oa>s> 222 222 22* ooo a S p § Q.O O tSA O ttAO SAO e>o o t3>a o QA U CAW e-att ^ o o o o ^ o o o o to o o o o o o 3 ri fH o t- o o ^ c3 r 3" o ^ ao iH oa c* to 03 e- 1 B »- t- C- t- E- tn b- C0 o- s :^ s- of s If ' a s sf tH o 1 1 o o o o ^ ^ g ^ _ o o o o o in t^ 1 M s- CO ^ M s" 3" »■ s^ !zi o ea o> rt a n o« QAS o ^ o ? ^ ^ S- Sf 1 ^ 8f S iH o- ■* iS »J «9 ^ o o ^ ^ ^ eS sT to n la' Mf 53 oS ^ S3 S fff ,-r ^ ^ 1050 ENUUEANCE OF ROTATING SHAFTS. 00 H > i-I 5^*1 [3 g :^ h bi O O o ^«< H O ■4 >-l M 1*! ^ t-) M a s 4 fe .9 IJ m -•g-J'l J 1^1 § cm Do. Do. ,000 rra otat OS a-o d H W « m ■ ooooooooooooooooooeoooooooooooooooooo o OOOOOOOOOOOOOOOOOOOOOOOOOOi^OOOOOdi— lOUOlfS o OOO:=OOOOOOOOOOOO>C3=>OOO<3OOOOOOOOOOO'4ir-<00C0 «4< ©"©"o cTcTcT© cTcTo^o^oooo cro"ooo"crcrcro"croc>'ocrcro"crocrMcrrrjr oT iHNeO->*'intDI>COO>OrH(Mrt"*intDlr-000>OiHMWT* Kw ^00~ of ifttJ o "3§g' rHWOl ■* / »( % "•a s ooo « „ ss S^^ ooo^^o OOO „ ooo ^ 00 = SSooD ^ t ci ■«* M m 4 t-'w s" cfo" o«r to CO -rft^e-J O*" sfss eS t-'rt-OO" m tnt^ rr M"as"<="o>" « ss ooioo© S§g ^ s ^^ ooo o oo ooo o o oooe o'cTo" r^ e* w-o" lO" lO~ icT tfT.rf* w-ift- uitatnta us oo* oo'oo'od" ifT ufuiirT ift- ss' in ■* ■»*<^ ' C4co^ia ooo ^ ooooo ooo -, „ ^ ■* ■^'* Tf<-« w"im*«~ ^ M t1 O o |2! n H t^ <■( o Hi tl pa -< ^ H H I-) 1^ <( p ^ 1^5 !zi s d3 I II ^ ^ a 3 ^ .fc 1 1 ■9 5 * p r p p a a P-O P.p.po o o 'JhOO ,-lrHOlOW(OC-t*«)eO»0100rHFH"«J(CO W Ui '^ 0> sminoo^oo^oooooooooooooeoo^otoe » c--^ oooooooeooooooooooooooooicoe 3 IB h isS-s i I O 0» p O F-i rH M N M -^ ~ OXMIO inrH ^t-'SeeOKOOb^OS CD t-O>C-0D ia»u3oo ^o a CD oco CD m t> t- 04 t* tsc^ooeq ooooooeoooooeooooooooeoooooooooo oooooooooooo^ooooooooooooooo^omo ooooooeoooooeooooooooooookacraiMia^coia ooooooooo OOCiOOOOOO cDino)e^-«-4-r-tcQ« oooo o o o ^ CO ooo oo ^ CO ta eo u3 oo -^ o ra coo oo (Dmc^t~C4 t" ooooooooooooooooooeooooooooooooe ooooeoooo C300000000 ooooooooo oooo o o o ^ e o o o o i-t M 00 ■* ifl (©"c^oo oTo iHiM'm^irf'cj t> 00 oTo r-TM «■"* toooootnto laio lAoooooooo o e4e4?4caoic4u4C4c^cqo3conMeoeQcoo3coco'^^'^Tt<'^'^'«^'^'**CQeo con nnnmmvo-^'^-Tti ■v* sooo oo ooooooooo o oooo 3000 oo ooooooovo o oooo CO eo CO eo T« •'ji ■*■* -^ w lO mm lO wbdo S i i • • : Sp< isnTHtota « V 1054 ENDURANCE OF ROTATING SHAFTS. d a § TS o p> ?^ H o EI r' r/, tq H <»7 i-l ch fe M h h -^ O O 1 .fc< H <1 O hJ H bJ f^ O » tei >5 ^ u e^ ti fa B tei Kl a t< " H "« Pi Till Pho a I O 03 -a ,a t ■fl ^ g & -ii 1 o « ^ ■s ~lie(l loads. In gauged length. Kemarks. Total. Per Bouare inch. Elongation, Set. Pounds. 260 1,250 2, 600 3,750 5,000 6, 250 7,500 8,750 10, 000 11,250 11, 600 10, 000 10, 250 10, 500 10, OOO 10, 250 10, 500 10, 750 10, 000 10, 250 10, 600 10, 750 11, 000 11,260 11,500 11, 750 12, 000 12, 500 13, 000 13, 600 14,000 14, 600 15, COO 15, 020 Pounds. 1,000 5,000 10, 000 15, 000 20, 000 25, 000 30, 000 35, 000 40, 000 46, 000 46, OOO 40, 000 41, 000 42, 000 40, 000 41, 000 42, 000 43, 000 40, 000 41, 000 42,000 43,000 44,000 45, 000 46, 000 47, 000 48, 000 50, 000 52, 000 54, 000 56, 000 58, 000 60 000 60,«80 Inches. 0. .0010 .0021 .0031 .0042 .0052 .0062 .0073 .0084 .0095 .0098 .0160 .0250 .0540 .0907 .1025 .1100 .1191 .1690 .1756 .1792 .1837 .1930 .2080 .2238 .2375 .2610 .32 .37 .44 .54 .70 .98 Inch. 0. Initial load. Elastic limit Load toll. Kested 1^ houra. Tensile strength. ' =30.5 per cent. .0002 1.83 Elongation of inch sections, ".19, ".24, ".33, ".59», ".26, ".22. Fractured 3".5 from the neck. Appearance, fine silky. Diameter at fracture, ".32. Area, .0804 square inch. Contraction of area, 67.8 per cent. ENDUEANCE OF ROTATING SHAFTS. 1065 No. 4236. Mark, 71. Diameter, ".564. Sectional area, .25 square inch. Gauged length, 6". Applied loads. In gauged length. Eemarka. Total. Per square inch. Elongation. Set. Pounds. 260 1, 250 2,600 3,750 5,000 6,250 7,600 3,760 10,000 10, 250 10,500 10, 760 11,000 11,260 11, 600 11, 750 10,750 10. 250 10,600 10,750. 11, 000 11,250 11, 600 11, 750 12, 000 12, 250 12,500 12,7.'i0 13, 000 13,600 14,-000 14, mo 15, 000 15,240 Founds. 1,000 5,000 10, 000 15, 000 20, 000 26,000 . 30,000 36, 000 40,000 4), 000 42, 000 43, 000 44,000 45, 000 .- 46, 000 47, 000 43,000 41, 000 42, 000 43, 000 44,000 46,000 46, 000 47,000 48,000 49, 000 60, 000 61,000 52, 000 54, 000 . 66, 1)00 58, 000 60.000 60, 980- Inches. 0. .0010 .0022 .0032 .0042 .0063 .0064 .0076 .0087 .0089 . 0091 .0092 . 0095 .0097 .0100 .0102 .0220 .0617 .0880 .1080 .1917 .1968 . 2090,' .2250 .2460 .2617 .30 .32 .34 .42 .52 .64 .83 1.27 1.78 Inch. 0. Initial load. Elastic limit. Load fell. Tensile strength. = 29.7 per cent. .0002 .0002 Elongation of inch sections, ".18, ".23, ".27, ".61*, ".28, ".21. Fractured 3".25 from the neck. Appearance, fine silky. Diameter at fracture, ".31. Area, .0754 square inch. Contraction of area, 69.8 per cent. 1066 ENDTJEANCE OF ROTATING SHAFTS. No. 4237. Marks, 72. Diameter, ".564, Sectional area, .25 square inch. Gauged length, 6". Applied loads. In gauged length. Ecmarks. Total. Per square inch. Elongation. Set. Pounds. 260 1,260 2,600 3,750 5,000 6,250 '7,600 8,760 10, 000 10, 760 11, 000 11,260 11, 500 9,760 10, 000 10, 250 10,600 10,750 11, 000 11,260 11,500 11,760 12,000 12;-260 12, 500 13,000 i 13, 500 14,000 14, 500 ' 15,000 15,120 Poundi. 1,000 5,000 10, 000 16,000 20,000 25, 000 30,000 36, 000 40, 000 43, 000 44,000 45,000 46, 000 39, 000 40, 000 41, 000 42,000 43,000 44, 000 45, 000 ' 46, 000 47,000 48, 000 49, 000 50, 000 52, 000 54, 000 56, 000 58, 000 60, 000 60, 480 Inches. 0. .0010 .0020 .0029 .0039 .0050 .0060 .0069 .0081 .0088 .0090 .0002 .0097 .0127 .0137 .0169 .0326 .1304 .1890 .2045 .2210 .2360 .2640 .2750 .3070 .38 .43 .56 .-71 .97 1.29 1.76 Inch. 0. Initial load. Elastic limit. Load fell. Tensile strengtli. =29.3 per cent. 0. 0. Elongation of inch sections, ".19, ".23, ".26, ".62*, ".26, ".20. Fractured 3".25 from the neck. Appearance, fine silky. Diameter at fracture, ".31. Area, .0754 square inch. Contraction of area, 69.8 per cent. ENDURANCE OP ROTATING SHAFTS. 1067 Mark, 73. Diameter, ".564. Sectional area, .25 square inch. Gauged length, 6". No. 4238. Applied loads. In gauged length. Bemarks. Total. Per square Incu. Elongation. Set. ' Pound*.'' 250 1,250 2,500 3,760 S,000 6,250 7,500 8,750 10,000 11, 250 11,600 11, 750 11,000 11, 260 11, 500 11, 750 12,000. 12,250 12,500 13, 000 13, 500 14,000 14, 500 15, 000 16, 310 TowadjS. 1,000 - 5,000 10, 000 15,000 ■ 20, 000 25, 000 . 30,000 35, 000 : 40, 000 ■ 45, 000 46,000 47, 000 44, 000 45, 000 46, 000 47, 000 48, 000 49,000 50,000 52,000 54,000 66,000 68,000 60, 000 61,240 InGhes. 0. .0008 .0018 .0028 .0038 .0049 .0060 .0072 .0083 .0098 .0100 .0103 .0460 .1350 .1975 .2100 .2340 .2450 .2750 .3250 .39 .48 .60 .81 1.28 1.79 Inch. 0. Initial load. t Elastic limit. Load felL Tensile strength. = 29. 8 per cent. 0. Elongation of inch sections, ".20, ".27, ".62*, ".31, ".23, ".16. Fractured 3".5 from the neck. Appearance, line silky. Diameter at fracture, ".31. Area, .0754 square inch. Oontractiou of area, 69.8 per cent. 1068 ENDURANCE OF ROTATING SHAFTS. No. 4239. Mark, 74. Diameter, ".564. Sectional area, .25 square inch. Gauged length, 6". Applied loads. In ganged length. Eemarks. Total. Per square inch. Elongation. - Set. Pounds. 250 1,250 2,600 3,750 6,-000 6, 260 7,500 8,750 10, 000 11, 250 12, 500 12,750-- 13,000 11, 500 11, 750 12, 000 12, 260 12, 500 12, 750 13, 000 .13, 250 13, 500 14, 000 14, 600 15, 000 15, 410 Pounds. 1,000 5,000 10,000 16, 000 20,000 25, 000 30, 000 35,000 40, 000 45, 000 60, 000 ' 51, 000 52, 000 46, 000 47, 000 48, 000 49, 000 50, 000 51, 000 52, 000 53, 000 54, 000 56, 000 58, 000 60, 00^ 61,610 Inches. 0. .0010 .0021 .0031 .0042 .0052 . 0063 .0074 .0086 .0097 .0107 .0108 .0120 . 0163 .0390 .2050 .2110 .2305 .2470 .27,50 .2980 .3360 .41 .52 .69 1.19 1.60 Inch. 0. Initial load. Elastic limit. Load fell. • Tensile strenglli. = 26,7 per cent. i" ■ .0002 Elongation of inch sections, ".17, ".20, ".25, ".57*, ".24, ".17. Fractured 3".25 from the neck. Appearance, floe silky. ^Diameter at fracture, ".32. Area, .0804 square inch. Contraction of area, 67.8 per cent. ENDURANCE OF ROTATING SHAFTS. 1069 Ko. 4240. Mark, 75. Diameter, ".564. Sectional area, 25 square inch. Gauged length, 6". A pplied loads. In gauged length. Bemarks. -Total. Per square .inch. Elongation. Set. Pounds. ' 260 . 1, 2.J0 2,500. 3,760 6,000 6.260 7,500 ' 8, 760 10,000 11,260 12,500 11, 250 "11.6110 n,1m 12, 000 12, 250 13,500 12, 750 ■ 13, OHO 13, 500 14, 000 14, 500 15, 000 16, 500 ' Pounds. 1,000 - 5,000 10, 000 16,000 20, 000 . 25,000 30, 000 36, 000 40,000 46. 000 60, 000 ■ 45,000 46, 000 47, 000 48, 000 49, 000 50, 000 51, 000 52, 000 54, 000 56, 000 68, 000 60, 000 - 62, 000 Jnohes. 0. .0009 .C019 .0029 .0040 .0051 .0061 .0071 .0082, .0091 .0102 .02Sl .1080 .1878 .2040 .2165 .2336 .2517 .2890 .36 .43 .57 .74 1.39 1.71 Inoh. 0. Initial load. DIastic limit. Load fell. Tensile strength. ,;= 28.5 per cent. ■ 0. Elongation of inch sections, ".18, ".24, ".30, ".57*, ".23, ".19. Fractured 3".4 from the neck. Appearance, fine silky. Diameter at fracture, ."31. Area, .0754 square inch. Contraction of area, 69.8 per cent. 1070 ENDUEANCK OF ROTATING SHAFTS. No. 4:24:1. Mark, 76. Diameter, ".664. Sectional area, .25 square inch. Gauged length, 6". Applied loads. In gauged length. Etoarks. Total. Per square inch. Elongation. Set. Pounds. 250. 1,230 2,500 3,750 5,000 6,250 7,600 8,760 10, 000 11, 250 12, 000 12, 250 11, 000 11, 250 11, 500 11, 750 12, 000 12,250 12, 500 12, 750 13, 000 13, 500 14,000 14, .MO 15, 000 15,260 Pounds. 1,000 5,000 10, OUO 15,000 20, 000 25, 000 30, 000 35, 000 40, 000 45, 000 48, 000 49, OUO 44, 000 45, 000 46, 000 47, 000 48,000 49, 000 50,000 61,000 52, 000 64, 000 66, 000 68, 000 60, 000 61, 040 IneJiea. 0. .0008 .0019 .0029 .0039 .0050 .0060 .0070 .0080 .0091 .0098 .0100 .0250 .0995 .1740 .1817 .2000 .2160 .2380 -.2570 ■T .44 ..67. .78 1.20 1.67 Inch. 0. Initial load. Elastic limit. Load fell. Tensile strength. = 27.8 per cent. .0001 Elongation of inch sections, ".17, ".33, ".49*, ".37, ".22, ".19. Fractured at middle of stem. Appearance, fine silky. Diameter at fraotu*e, ".31. Area, .0754 square incli. Contraction of area, 69.8 per cent. ENDUKA$ICE OF ROTATING SHAFTS. 1071 liTo. 4242. Mark, 77. Diameter, ".564. Sectional area, .25 square inch. Gauged length, 6". Applied loads. In gauged length. Bemaiks. Total. Per square inch. Elongation. Set. Founds. 250 1,250 2,500 3,750 5,000 6,250 7,600 8,750 10, 000 11, 250 11, 500 11, 750 12, 000 12, 260 12, 500 12,760 13, 000 13, 250 13, 500 13, 750 11,750 12, 000 11. 760 12,000 12, 250 12, 500 12, 760 13, 000 13, 250 13, 500 13,750 14, 000 14, 260 14, 600 14,750 15,000 15, 250 16, 500 15, 520 Foundt. 1,000 5,000 10,000 16,000 20,000 25,000 80, 000 35, 000 40, 000 46,000 46, 000 47,000 ' 48,000 49,000 60,000 51, 000 62, OOO 53,000 54, 000 55, 000 47, 000 48, 000 47, 000 48,000 49, 000 60, 000 51,000 52,000 63, 000 54, UOO 56, 000 56, 000 67,000 58, OCO 59, 000 60,000 61, 000 62, 000 62,080 Inches. 0. .0008 .0018 .0028 .0038 .0048 .0068 .0069 .0079 .0089 .0091 .0093 .0096 .0099 .0101. .0103 , .0105 .0107 .0109 .0111 .0172 .0257 . 0360 .0740' .1940 .2170 .2320 .2600 .2760 .3075 .3340 .37 .41 .48 .52 .66 .73 .97 1.20 1.61 Inch. 0.. Inltialload. Elastic Umit. Tensile strength, = 26.8 per cent. , 0. Elongation of inch sections, ".15, ".20, ".23, ".56*, ".28, ".19. Fractured 2".75 from the neck. Appearance, fine silky. Diameter at frabture, ".32. Area, .0804 square inch. Contraction of area, 67.8 per cent. 1072 ENDUEANCE OF EOTATINQ SHAFTS. SPECIMENS FROM WROTIGHT-IRON SHAFTS. No. 4248. Mart, 41. Diameter, ".564. Sectional area, .25 square inch. Gauged length, 6". ■ Applied Iliads. In ganged length. Bemarka. Total. Per square iDCll. Elongation. Set. Pounds. 2o0 1,250 2,500 3,750 5,000 6, 250 7,500 7,750 8,000 8,ao , 8,600 8, 7.50 9,000 ' 7, 500 7,750 -8,000 8, 250 8,500 8,7.50 . 8,000 ' 8, 250 8/500 9.000 9,500 10, 000 10, -500 11, 000 11, 500 12, 000 12, 020 Pounds. 1,000 1 6,000 10,000 15, 000 20. 000 25, 000 30, 000 31,000 _ 32, OCO 33, 000 34, 000 35, 000 36, 000 30, 000 31, 000 32, 000 33, 000 34, 000 35, 000 32, 000 33.000 - 34, 000 ■ 36, 000 38, 000 40, 006 42,000 44. 1 00 46, 000 48, 000 48, 080 Inches. 0. .0008 .0018 .0028 .OOM .0049 .0059 .0061 .0063 .0065 . 0008 .0070 .0071 .0101 .0141 .0212 .0375 .0633 .1440 .1960 .2010 .2068 -.22 .28 .34 .41 .63 .72 1.08 X39 1.64 Inch. 0. Initial load. 'Elasticlimit. Load fell. Tensile strengili. .= 27.3 per cent. 0. Elongation of inch sections, ".19, ".43*, "32, ".27, ".22, ".21. Fractured 2."25 from the neck. Appearance, fibrous. Diameter at fracture, ".41. Area, .132 square inch. Contraction of area, 47,2 per cent. ENDURANCE OF ROTATING SHAFTS. Ko. 4249. 1073 Mark, 42. Diameter, ".564. Sectional area, .25 square iaoh. -Crauged length, -6". Applied lofida. In gauged length. Hemarks. Total. Per square inch. Elongation* - Set. Pounds. 250 1,250 2,500 3, 750 6,000 6.250 7,500 7.750 8,000 8,250 8,600 7,750 8,000 8,250 8,500 8,000 8,250 8,500 8,760 9,000 9, 250 9,600 9,760 10, 000 10, 500 11, OUO 11,500 11, 960 Pounds. 1,000 5,000 10, 000 15, 000 20, 000 25,000 . 30, 000 31, 000 32, 000 33, 000 34, 000 31,000 32, 000 33, 000 34,000 32, 000 5 33, 000 34,000 35, 000 36, 000 37, 000 38, 000 39, 000 ■40, 000 42, 000 44, 000 46, OOO 47, 840 IneKcs. 0. .0008 .0018 .0028 .0038 .0049 .0060 .0061 .0063 .0066 .0068 .0158 .0317 . .0440 .0650 .0780 .0868 .1017 .1300 .2040 .2165 .2365 .2680 .2925 .3325 .41 .52 .71 1.28 1.50 incH. 0. Initial load. Blasticlimlt. LoadfeU. Tensile strength; ==25.0 per cent. 0. ' Elongation of inch sections, ".20, ".48*, ".23, ".21, ".20, Fractured 1".65 from the neck. Appearance, fibrous. Diameter at fracture, ".40. Area, .1257 square inch. Contraction of area, 49.7 per cent. H. Ex. 165 68 .18. 1074 ENDURANCE OF ROTATING SHAFTS. No. 4209. Mark, 43. Diameter, ".564. Sectional area, .25 square inch. Ganged length, 6". Applied loads. In ganged length. Keinarks. TotaL Per square inch. Elongation. Set. Pounds. 250 1,250 2,500 3,750 5,000 6,250 7,500 7,750 8,000 8,250 8,600 8,750 9,000 9,250 9,600 9,750 10, 000 10, 250 10, 600 10, 760 11, 000 11, 250 11, 500 11, 750 11, 890 Pounds. - 1,000 5,000 10, 000 15, 000 20,000 25, 000 30,000 31,000 32, 000 - 33,000 34, 000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 41,000 42,000 43, 000 44, 000 45,000 ■ 46, 000 47, 000 47, 560 Irwhes. 0. .0007 .0020 .0031 .0041 .0051 .0061 .0063 .0065 .0068 .1900 .21 .22 .25 .28 .31 .35 .39 .44 .48 .58 .64 .79 .94 1.43 1.62 Inch. 0. Initial load. Elastic litnit. Load fell. ' 1 Tensile strength.^ 1 =?7.C per cent. Elongation of inch sections, ".24, ".52*, ".25, ".22, ".21, ". Fractured 1".8 from the neck. Appearance, fibrous. Diameter at fracture, ".41. Area, .132 square inch. Contraction of area, 4.27 per cent. 18. ENDUEANOE OP ROTATING SHAFTS. 1075 No. 4210. Mark, 44. Diameter, ".564. Sectional area, .25 square inch. Gauged length, 6". Applied loads. In gauged length. 1 Hemarks. Total. Per square inoli. Elongation. Set. Pound). 250 1,250 2,600 3,750 5,000 6,250 7,500 7,760 8,000 8,250 8,500 8,750 9,000 9,260 9,500 9,750 10, 000 10, 250 10, 600 10,750 11, 000 11, 250 11, 500 11, 750 11,820 Pound). 1,000 6,000 10, 000 16, 000 20, 000 25, 000 30, 000 31,060 32,000 33,000 34, 000 36, 000 36, 000 37, 000 38, 000 39, 000 40, 000 41,000 42,000 43,000 44, 000 45, 000 46, 000 47, 000 47,280 Jnehet. 0. .0009 .0020 .0030 .0041 .0061 .0062 .0064 .0067 .0068 .0071 .1916 .22 ;27 .29 .31 .34 .39 .42 .48 : .58 .63 .79 1.00 1.29 1.45 Inch. ' 0. 0. Initial load. Elastic limit Load fell. Tensile strength. =24.2 per cent. 0. .0001 .OUOl .0001 " ' Elongation of inch sections, ".15, ".20, ".21, ".26, "AS*, ".18. Fractured 2".25 from the neck. Appearance, flbrouSi Diameter at fracture, ".39. Area, .119 square inch. Contraction of area, 52,2 per cent. 1076 ENDURANCE OF ROTATING SHAFTS. No. 4250. Mark, 45. Diameter, ".564. Sectional area, .25 square incli. Gauged length, 6". Applied loada. In ganged length. Kemarks. Total. Per square incb. Elongiition. Set. Founds. 250 1,250 2,500 3,760 6,000 6,250 7,500 7, 750 8,000 8,250 8,500 8,750 9, poo 8,760 8,500 8,750 9,000 9, 250 9,500 9,750 10, 000 10, 250 10, 600 11,000 11,600 12,000 12, 500 13, 000 13,500 13, 730 Founds. 1,000 6,000 10,000 15, 000 20, 000 25,000 30, 000 31,000 32, 000 33, 000 34, 000 35, 000 - 36,000 35, OOO 34,000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 41, 000 42, 000 44, 000 46, 000 48, 000 50, 000 52! 000 54, 000 54, 920 Inches. 0. .0010 .0020 .0030 .0041 .0052 .0064 .0066 .0069 .0071 .0073 .0076 .0078 .0248 .0413 .0455 .0778 .1310 . 1520 .1580 .1740 .1920 .2150 .27 .31 .38 .47 .59 .82 1.17 1.54 Inch. 0. Initial load. Elastic limit. Load fell. /- Tenaile strenfftli. = 25.7 per cent. Elongation of inch sections, ".23, ".45*, ".28, ".22, ".19, ".17. Fractured 2".25 from the neck. Appearance, fibrous, lamellar. Diameter at fracture, ".42. Area, .1385 square inch. Coatraction of area;, 44.6 per cent. ENDURANCE OF ROTATING SHAFTS, 1077 No. 4211. Mark, 46. Diameter, ".564. Sectional area, .25 square inch. Gauged length, 6". ■ Applied loads. In ganged length. Eemarks. ToIaJ. Per square incU. Elongation. Set. Poundi. 250 1,250 2,500 3,750 6,000 6,260 7,600 7,760 8,000 8,250 8,500 8,750- 9,000 9,260 9,500 9,760 10,000- 10, 250 10, 500 10, 750 11,000 11, 260 11,600 11, 760 12, 000 12, 250 12,600 12, 760 13,000 13,260 , 13, 600 ■ Poundt. 1,000 5,000 10,000 -15,000 20, 000 25,000 30, 000 31,000 32,000 33,000 34,000 36,000 36,000 37,000 38, 000 . 39,000 40,000 ' 41,000 42,"000 43, 000 44,000 45, 000 . 46, 000 47,000 . 48, 000 49,000 50, 000 51, 000 52, 000 53, 000 54,000 Inches. 0. .0008 .0019 .0029 .0040 .0049 .0060 .0062 , .0064 .0067 .0070 .0072 .0074 .0076 .0079 .1840 ■" .1980 .22 .24 ■27 .29 .32 - .36 .39 .42 .48 .66 .60 .72 .83 1.19 1.41 Inch. , 0. Initial load. Elastic limit. Load fell. Tensile strength. =23, 5 per cent. Elongation of inch sections, ".19, ".23, ".26, ".36*, ".20, ".17. Fractured 3".25 from the neck. Appearance, fibrous, lamellar. Diameter at fracture, ".43. Area, .145 square inch. Contraction of area, 41.9 per cent. 1078 ENDURANCE OP ROTATING SHAFTS. No. 4211J. Mark, 48. Diameter, ".564. Sectional area, .25 square inch. Gauged lengtli, 6". Applied loads. In ganged length. Eemarks. Total. Per square inuh. Elongation. Set. Founds. 260 1,260 2,600 3,750 6, (lOO 6,250 7,600 7, 750 8,000 8,260 8,600 8,750 9, 000 ,9,250 9.500 9,750 10, 000 10, 250 10,600 10, 750 11,000 11, 250 11, 500 11,750 12, 000 l4,25() 12, SOO 12, 760 13, 000 13, 250 U, 500 13, 740 Pmndt. 1,U00 S,OUO ' 10, 000 16,000 20, 000 25, 000 30, 1100 31, OuO 32, 000 33, 000 34,000 35,000 36, 000 37,000 38, 000 39, 000 40, 000 41,000 42,000 43,000 44,000 45, 000 46, 000 47, 000 48, 000 49, 000 50, 000 61,000 52, 000 6;),000 54,000 54,960 IneliM. 0. .0008 .0018 .0028 .0038 .0048 .0058 .0060 . 0062 .0066 .0068 .0069 .0071 .0072 .1665 .1750 .1950 .2060 .226 .244 .27 .30 .33 .37 .40 .43 .49 .55 .64 .75 .96 1.30 1.44 Inch. 9. 0. Initial load. Elastic limit. Load fell. Tensile strength. =24.0 per cent. 0. 0. 0. Elongation of inch sections, ".19, ".25, ".36*, ".24, ".21, ".19. Fractured 3".25 from the neck. Appearance, fibrous lamellar. Diameter atfrijcture, ".45. Area, .159 square inch. Oontractiou of area, 36.4 per cent. ENDURANCE OF ROTATING SHAFTS. 1079 No. 4212. Mark, 49, Diameter, ".564. Sectional area, .25 square inch. Gauged length, 6". Applied loads. In gauged length. Semarks. Total. Per square incn. Elongation. Set. Pounds. 250 1,250 2,500 3,750 5,000 6,250 7,500 7j760 8,000 8,250 8,500 8,750 9,000 9,250 9,500 9,760 10,000 10, 250 10, 500 10, 750 11,000 11,250 11, 500 11, 750 12, 000 12, 250 12, 500 12,750 13, 000 13,250 13, 500 13,610 Pounds. 1,000 8,000 10, 000 15, 000 20, 000 25, 000 30, 000 31, 000 32, 000 33,000 34,000 35, 000 3«, 000 37, 000 38, 000 39, 000 40, 000 41, 000 42, 000 43,000 44, 000 45, 000 46, 000 47, 000 48, OUO 49, 000 50, 000 51, 000 52, 000 53, 000 64,000 64,440 Inches. 0. .0008 .0017 .0027 .0038 .0048 .0058 .0059 :0062 .0064 .0067 .0068 .0070 .0072- .1710 .1775 ■. 1910 .2090 .2290 .2475 .2760 .2970 ' .3310 - .37 .40 .44 .50 .55 .68 .77 ■ .98 1.28 1.63 Inch. 0. 0. Initial load. Elastic limit, toad fell. Tensile strength. , =26.5 per cent. - 0. 0. ■0. Elongation of inch sections, ".20, ".26, ".45*, ".23, ".20, ".19. Fractured 3".2 from the neck. Appearance, ftbrous, lamellari Diameter at fracture, ".43. Area, .145 square inch. Contraction of ar,ea, 41.9 per cent. .080 ENDURANCE OF ROTATING SHAFTS. No. 4245. Marks, 36. Diameter, ".564. Sectional area, .25 square incli. Gauged length, 6", Applied loads. In ganged length. ' Kemarka. Total. Per sqaare inch. Elongation. Set. Pounds. 250 1,250 2,500 3,750 5,000 6,250 7,600 7, 760 7,500 7,760 8,000 8,250 8,500 8,750 9,000 9,260 9, 500 9,750 10, 000 10, 250 10, 500 11,000 11, 600 ; 12, 000 ' 12, 500 ' 12,680 . Pounds. ■1, 000 5,000 10, 000 16, 000 20, 000 25,000 30, 000 31, 000 30, 000 31, Olio 32, 000 33, 000 34,000 35, 000 36, 000 37, 000 38, 000 39, 000 40, 000 41, 000 42, 000 44,000 46, 000 48, 000 50, 000 50, 720 Ii ches. 0. .0008 .0018 .0028 .0040 .0050 .0062 .0061 .0380 .0555 .0705 .0875 .1260 .1550 , .1735 .1860 - .2210 .2335 .2575 .28 .32 .41 .50 .66 .91 1.20 1.61 Inch. 0. Initial load. Elastic Umit. Loadfea t Tensilestrength. ^25.2 per cent. 1 0. Elougation of inch sections, ".45*, ".25, ".27, ".24,".17, ".13. Fractured 1" from the necli. Appearance, fibrous. Diameter at fracture, ".41 Area, .132 square inch. Contraction of area, 47.2 per cent. i ENDUEANCE OF EOTATING SHAFTS. No. 4243. 1081 Mark, 37. Diameter, ".564. Sectional area, .25 square inch. Gauged length, 6". Applied loads. In gauged length. ' Semarks. Total. Per equare incii. Elongation. Set. , 250 1,250 2,600 3,750 ■ 6,000 6,260 • .7,500 7,750 8,000 8,250 8,600 8,750 8,000 8,250 8,600 8. 750 • 9,000 9,260 9,500 9,7.'i0 10, 000 10,250 10, 500 10, 750 11, 000 11,250 11,500 11,750 12, 000 - 12,250 12,450 Ponmda. 1,000 5,000 10, 000 15, 000 20, 000 25, OOO 30, 000 31, 000 32, 000 33, 000 34, 000 35, 000 82,000 83, 000 34, 000 . 35, 000 36, 000 37, 000 38, 000 39, 000 40,000 41, doo 42, 000 43, 000 44, 000 45, 000 46, 000 47, 000 48, 000 49, 000 49, 800 Inches. 0. .0008 .0018 .0028 .0038 .0048 .0059 .0061 .0063 .0066 .0068 .0085 .0335 .0980 .1550 .1640 . 1860 .2040 .2280 .2570 .2860 .31 .36 .39 .44 .60 .57 .64 .78 .91 1.36 1.62 Inch: 0.. Initial load. Elastic limit. Load fell. Tensile strength. = 27 percent. 0. - Elongation of inch sections, ''.22, ".48*, ".28, ".25, ".21, ".18. Fractured 2" from'the neck. Appearance fibrous. Diameter at fracture, ".41. Area, .132 square inch. Contraction of area, 47.2 per cent. 82 ENDURANCE OF EOTATING SHAFTS. No. 4244. Mark, 38. Diameter, ".564. Sectional area, .25 square inch. jrauged length, 6". Applied loads. In gauged length. Eemarks. Total. Per sqaare JLCh. Elongation. Set. Pounds. 250 ' 1, 260 Pounds. 1,000 6,000 10, 000 15, 000 20, 000 26, 000 30, 000 32,000 33, 000 34,000 30, 000 31, 000 32,000 33, 000 34,000 35, 000 36, 000 37, 000 38, 000 39, 000 40,000 42, 000 44,000 46, 000 48, 000 49, 720 Inches. 0. .0008 .0018 .0028 .0038 .0048 .0058 .0062 .0064 .0072 .0142 .0220 .0370 .0626 .1740 .1785 .1925 ' . 2080 .2420 .26 .30 .37 .47 .59 .80 1.30 1.62 Inch. 0. Initial load. Elaatic limit. Load fell. Tensile strength. =27.0 per cent. 2,500 3,750 5,000 6,250 7,600 8,000 ■ 0. 8,250 8,500 7,500 7,750 8,000 8,250 8,500 8,750 9,000 9,250 9,600 9,750 10, 000 10, 600 11, 000 11, 500 12, 000 i 12,430 Elongation of inch sections, ".19, ".26, ".47*, ".24, ".23, ".23. Fractured 2".75 from the neck. Appearance, flbrousr Diameter at fracture, ".39. Area, .1194 square inch. Contraction of area, 52.2 per cent. ENDURANCE OF ROTATING SHAFTS. 1083 No. 4246. Mark, 39. Diameter, ".564. Sectional area, .25 square inch. Gauged length, 6". Applied loads. In gauged lei,gtli. Eemarks. Total. Per square inch. Elongation. Set. Pounds. 250 1,250 2,500 3,760 5.000 6,250 7,500 7,750 8,000 7, 500 7,760 8,000 8,250 8,500 8,750 9,000 9.250 9,500 111, 000 10, 500 11, 000 11.500 12, 000 12,370 Pounds. 1,000 , 5,000 ' 10, 000 16,000 20, 000 25, 000 30,000 31, 000 32, 000 30, 000 31,000 32,000 33,000 34, 000 35, 000 36,000 37,000 38.000 40,000 42,000 44,000 46,000 48, 000 49,480 Inches. 0. .0008, .OOlff .0028 .0038 .0048 .0068 .0060 .0063 .0167 .0218 .0427 .0970 .1750 .1857 .2027 .23 .27 .31 .39 .47 .60 .83 1.40 1.67 Inch. 0. Initial load. Elaatic limit. Load fell. Tensile strength. =27.8peroent. 0- ., Elongation of inch sections, ".20, ".46*, ".33, ".24, ".23, ".21. Fractured 2."5 from the neck. Appearance, fibrous. Diameter at fracture, ".39. Area, .1194 square inch. Contraction of area, 52.2 per cent. 1084 ENDURANCE OP ROTATING ' SHAFTS. No. 4247. Mark, 40, Diameter, ".564. Sectional area, .25 square incli. Gauged length, 6". Applied loads. In ganged length. Bemarks. Total. Per square inch. Elongation. Set. Pounds. 250 1,260 2,500 3, 7.'50 5.000 6,250 7,500 7,750 8.000 7; 500 7,750 8,000 8,250 8, 500 8,750 9,000 9,260 9,600 9,750 10, 000 10. 600 11, 000 11, 500 12; OUO 12, 420 Pounds. 1,000 6,000 10, 000 15, 000 20, 000 25,000 30, 000 31, 000 32, 000 30, 000 31, 000 32, 000 33, 000 34, Olio 35,000 36, 000 37, 000 38, 000 39, 000 40,000 42, 000 44, 000 46,000 48,000 49, 680 Inches, 0. .0008 .0018 . 0028 .0040 .0051 .0062 .0063 .0068 .0096 .0138 .0365 .0870 .1630 .1766 .1087 .2220 .2470 .2660 .3065 .38 .48 .60 .82 1.13 1.81 Inch. 0. Initial load. Elastic limit Loa4feU. Tensile strengtlL =25.2 per cent. 0. Elongation of inch sections, ".16, ".20, ".20, ".27, ".48*, Fractured 2".25 from the neck. Appearance, fibrous. Diameter at fracture, ".39. Area, .1194 square inch. Contraction of area, 52.2 per cent. .20. ENDURANCE OF ROTATING SHAFTS. K"o. 4215. 1085 Mark, 60. Diameter, ".564. Sectional area, .25 square inch. Gauged length, 6". Applied loads. In gaaged leugth. Bemarks. Total. Persqnare inch. Elongation. Set. _Poun-l■-l^H^Hr^««««Mf-'^HMN-^MC 5Sf' - 03 f- & CO «b OS t^Ss t-' h -rf-,f- 1-*'& t-'-H (N'eo"cg"S5 ■ lo" oref^irrpsoTorcf ift c^Tof cTto orid'o~iri't> J'oTc- 10 o ^ ^,_lr4P^QM^(Mr-li-iF-l(Nr-4r-t>-?4e0IM74eC00)O— i(M aoomooH<-)NineQTHCDt~mcD'HcacoTHiocot>oo W (M CT CJ CM W M CM W (M W CT M M C> N CM CM N iT-l Ca (M M NATURAL STONES AND BUILDING MATERIAL. COEFFICIENT OF EXPANSION, COMPRESSION TESTS, AND TRANSVERSE " TESTS. 1097 The expansion of the stones was determined on a ganged length of about 20 inches. The specimens were prepared with J-iuch drilled holes, into which were driven brass plugs, and in the ends of the plugs were made small drilled and counter-sunk holes defining the extremities of the gauged length. The stones were first measured in the open air, afterward in water baths of different temperature, the temperature of the cold bath being about 33.50 F. ; that of the hot bath in the vicinity of 180° to 200° F. The details of the tests show a very decided swelling of the stones in most cases after soaking for a time in water, which effect was generally increased by the hot over that of the cold water. In order to eliminate the effect of this swelling and obtain coefScients of expansion for the wet material due principally or solely to change in temperature, the values of the coefficients as computed are from the contractions of the stones while returning from the temperature of the hot to the temperature of the cold bath. The same specimens were used in compression tests, and when not fractured in this manner were ruptured finally by transverse stress. The compression tests were undertaken chiefly to investigate the moduli of elasticity under different loads and the behavior of the ma- terial under ascending and descending stresses. The moduli of elasticity have been computed between different stresses, deducting the permanent sets in each case, and these values are stated in the details of the tests. DETAILS OF COEFFICIENT OF EXPANSION EXPERIMENTS. No. 5001. HoosiBR Bupp, Oolitic Limestone, feom Bedford, Ind. Dimensions, 24" x 6".03 x 4". Original gauged length in air, 20" .0033. Temperature of room, 60° F. Bath. Gauged length. Remarks. Tempera- ture (de- grees, F.}. Time exposed. Total. Successive difference. 57 178 33.5 Bours. Inchet. 20. 0035 20. 0168 20.0059 Inch. . 0002 .0133 .0109 After soaking in hath 14 days. When placed in hot bath air escapes from stone. Cooled in air. ^ 20i 1099 1100 STONES AND BUILDING MATERIAL. No. 5002. Indiana Limestone. Dimensions, 23".98 x 6".03 x 4".06. Original gauged length in air, 20".0084. Temperature of room, 68° P. Batb. Gauged length. Bernards. Tempera- tuTe (de- grees, F.). Time exposed. Total. SncceasiYe difference. 33.6 33.5 33.5 33.5 33.5 34 176 178.5 67 179 377 76 33.5 33.5 33.5 34 50 Bours. 1* 2 3 19 1 % 15 6i 15 J 96 66 Inches. 20. 0074 20. 0069 20. 0070 20. 0071 20. 0074 20. 0074 20.0080 20. 0210 20. 0205 20. 0116 20. 0221 20.0223 20. 0132 20. 0124 20. 0120 20.0115 Inch. .0010 .0005 .0001 .0001 .0004 0. . 0006. .0130 .0005 .0089 .0105 .0002 .0091 .0008 .0004 .0005 Air continues to escape from stone in steady stream. Air continues to escape from stone. Do. Removed from bath. In air 3 da.ys. Temperature of room, 68° F. Keturned to bath. 20. 0118 .0003 No. 5003. Vermont Marble. Dimensions, 23".94 x 5".99 x 3".98. Original gauged length in air, 19".9989. Temperature of room, 71° JP. Bath. (ranged length. Remarks. Tempera- ture (de- grees F.). Time exposed. Total. Successive difference. ' 33. 5 33.5 33.5 33.5 33.5 33. « 33.5 53 203 71 194 34 34 34 Hours. 4^ 24 30i 48 53 144 Inches. 19.9988 19. 9989 19. 9993 20. 0000 19. 9994 ' 19.9995 19. 9990 20.0000 20. 0239 20. 0109 20. 0223 20. 0117 20. 0119 20.0118 Inch. .0001 . 0(101 .0004 .0007 .0006 .0001 .0005 .0010 .0239 .0130 .0114 .0106 .0002 .0001 After soaking in bath 14 daja. 7 , 16 5 18 26 42i STONES AND BUILDING MATERIAL. No. 5004. Lee (Mass.) Marble. Dimensions, 23".97x6"x3".97. Original gauged length in air, 20".0061. Temperature of room, 60° P. 1101 BatU, Gauged length. Ilemarlca. Tempera- tai-6 (de- grees F,), Time exposed. Total. Successive difference. 54 189,5 181 181 33,5 Mmirs. Inches. 20. 0060 20. 0236 20. 0217 20.0221 20. 0061 Inch. .0001 .0170 .0019 .0001 .0160 After soaking in bath 7 days 4 hours. Cooled in air. e" II 191 No. 5005. Potomac Ebd Sandstone. Dimensions, 24".0l x 6".01 x 4".02. Original gauged length, in air, 20". 0034. Temperature of room, 72° F. Bath. Gauged length. Remarks.' Tempera- ture {de- grees, F.). Time exposed. Total, Successive difference. 33.5 33.5 33.5 33.5 53.5 187 58,5 183 64,5 33,5 33.5 Sours. i 18 Inches. 20,0016 20, 0010 20. 0020 20, 0021 20. 0015 20. 0045 20,0182 20, 0050 20,0187 20, 0061 20, 0035 20.0036 Inch.. .0018 .0006 .0010 .6001 .0021 .0 .0137 .0132 .0137 . 0128 .0026 .0001 Removed from bath. In air 2 days. Temperature of room, 68° F. After soaking iu bath 19 days. 16 n 16 1 sii 1102 STONES AND BUILDING MATERIAL. No. 5006. Portland Red Sandstone. Dimensions, 24" x 5".97 x 3".97. Original gauged length in air, 19".9912. Temperature of room, 74° F. Bath. Gauged length. Keiuarlcs. Tempera- ture (de- grees, F,). Time exposed. Total. Successive difFerence. 33.5 33.6 33.5 33.5 33.5 33.5 33.5 33.5 180 182 56 to 58 33.5 33.5 33.5 Houra. 16* 22 24 40 14 Inchei. 19. 9906 19. 9936 19. 9936 19.9934 19.9932 19. 9930 19.9935 19. 9936 20. 0105 20. 0095 19. 9969 19. 9968 19. 9954 19. 9951 Inch. .0006 .0030 0. .0002 .0002 .0002 .0005 .0001 .0169 .0010 .0126 .0001 .0014 .0003 After soaking in batli 6^ days. 7* 71 No. 5007. Ohio Sandstone. Dimensions, 23".96 x 5".98 x 3".97. Original gauged length in air, 20".0019. Temperature of room, 70° P. Bath. Gauged length. Eemarka. Temepra- ture (de- grees, F.). Time exposed,' Total. Successive difference. 63 183 33.6 33.5 Sours. Inches. 20.0037 20.0187 20. 0001 20. 0005 Inch. .0018 .0150 .0186 .0004 After soaking in hath 12 days 4 hours. When placed in hot bath, pieces iiaked off comers near middle of length, where hand- screw used in handling was clamped. Air escapes from pores. Cooled in air. 2| STONES AND BUILDING MATERIAL. No. 5008. MoNSON (Mb.) Slate. Dimensions, 24" .07 x 6". 13 x 4".10. Original gauged length in air, 19".9954:. Temperature of room, 68° F. 1103 Bath. Gauged length. Hemarjia. Tempera- ture (de- greea.F.). Time exposed. Total. SuccesslTe difference. 33.5 33.5 33.5 33.6 33.5 33.5 33.5 61 195 68.6 191 31 31 Bours. ? 7 22i Inches. 19. 9949 19.9940 19.9931 19. 9933 19.9928 19. 9935 19.9931 • 19.9971 19. 9965 20. 0096 19 9977 20. 0108 10.9951 19.9950 Inch. .0005 .0009 .0006 .0001 .0005 .0007 .0001 .0037 .0006 .0131 .0118 .0131 .0157 .0001 Eemoved from bath. In air 12 hours. Temperature of room, 08° F, After soaking in bath 17 days. 8 16 6i lli 65 No. 5009. North Eivbb Blub Stone. Dimensions, 23".98 x 6". x 4". Original gauged length in air, 20" .0052. Temperature of room, 67° F. Bath. Gauged length. Eemarka. Tempera- ture, de- ■ grees, F.). Time exposed. Total. Successive difference. 33.5 33.5 33. S 59 192 81.5 31 31 31 Hottrs. it 6 Incites. 20. 0026 20.0018 20. 0019 20. 0059 20. 0116 20.0340 20. 0182 20.0165 20. 0151 20. 0156 Inch. .0026 .0008 .0001 .0010 .0087 .,0196 .0158 .0027 .0003 .0001 KemoTed from bath. In air 2J days. Temperature of room, 68° F. After Boakmg in bath 21 days. 7 4 76i 1104 STONES AND BUILDING MATERIAL. No. 5010. WoECESTBR Granite. Dimensions, 24=".02 x C'.Ol x 4".01. Original gauged lengtli in air, 20".0023. Temperature of room, li° F. Bath. Ganged length. Eomarks. Tempera- ture (de- grees, F.). Time' exposbcl. Total. Snccessite difl'erence. 33.6 33.5 33.5 33.6 33.5 33.5 49 33.5 55.6 182.5 45 183 60.5 33.5 .33.5 33.5 Sours. 4' = 7 23 31 60 83 8 Inches. 20. 0015 20. 0010 20. 0011 20. 0016 20.0014 20.0018 2C. 0009 20. 0017 20. 0029 20. 0163 20. 0043 20, 0166 20. 0059 20. 0046 20. 0044 20. 0049 Inch. .0008 .0005 .0001 .0004 .0001 .0004 .0009 .0008 .0012 .0134 .0120 .0123 .0107 .0013 .0002 .0005 Mtei soaking in bath 3 days 21 hours. After soaking in bath 10 days. 7 16 2i 22 sol* 46i No. 5011. QuiNCY Granite. Dimensions, 24" x 6" x 4". .Original gauged lengtli in air, 19' Temperature of room, 72° P. .9951. Bath. Gauged length. Remarks. Tempera- ture (de- grees, I'.). Time exposed. Total. Successive diflerence. 63 199 179 33.5 33.5 33.5 Sours. Inches. 19. 9952 20. 0079 20. 0062 19.9953 19. 9957 19.9967 Inch. .0001 .0127 .0017 .0109 .0004 0. After soaking in bath 10 days. f 24 49i 65^ STONES AHD BUILDING MATERIAL. No. 5012. Cape Ann Granite. Dimensions, 24" x 6".02 x 4".01. Original gauged length in air, I9"r9303. Temperature of room, 58° P. 1105 Bath. Gauged length. Eemarks. Tempera- ture (de- grees, F.). Time exposed. Total. Successive difference. 66 179 181 33.5 Hours. Inches. 19.9315 19. 9395 19. 9401 19. 9310 Inch. .0012 .0080 .0006 .0091 After soaking in bath 11 days. 7i 4 231 No. 5013. Eed Bkiok No. 1. Dimensions, 7".84 x 3".53 x 2".18. Weight, 4 pounds 11 \ ounces. Original gauged length in air, 6".0852. Temperature of room, 75° F. ' Bath. Ganged length. Eemarks. Tempera- ture (de- ■ grees, F.) Time exposed. Total. Successive difference. 52 184 34 Hours. 186 Inches. 6.0850 6.0874 6. 0842 Inch. .0002 .0024 .0032 Eemoved from hot bath. "Weight, 4 pounds 15 onncea. No. 5014. Ebd Brick No. 2. Dimensions, 7".85 x 3".61 x 2".23. Weight, 4 pounds 12^ ounces. Original gauged length in air, 6".0109. Temperature of room, 75° F. Bath. Ganged length. Remarks. Tempera- rture (de- grees, F.) Time - exposed. Total. Successive difference. 52 184 34 Hours. 186 JncA«». 6. 0107 6.0129 6.0106 Inch. .0002 .0022 .0023 Eemoved from hot hath. Weight, 5 pounds 1\ ounces. H. Ex. 165- -70. U06 STONES AND BUILDING MATERIAL. No, 5015. Bed Brick No. 3. Dimensions, 7".70 x 3".58 x 2".21. Weight, 4 pounds lOJ ounces. Original gauged length in air, 5". 9396. Temperature of room, 75° F. Bath. G-anged length. Bemai'ks. Tempera- ture (de- grees, r.). Time exposed. Total. SuooessiTe difference. 52 184 34 Hours. 42i 4 186 Inches. 5.9391 6. 9417 6. 9394 Inch. .0005 .0026 .0023 Eemoveil flora but bath. Weight, 4 pounds 14^ ounces. No. 5016. Bed Brick No. 4. Dimensions, 7".78 x 3".58 x 2".22. Weight, 4 pounds 12J ounces. Original gauged length in air, 6". 0204. Temperature of room, 75° P. Bath. (a^auged length. EemarUs. rempera- ture (de- grees, F.). Time exposed. Total. Successive diirerence. 52 184 34 Hours. 186 Inches. 6. 02U0 6.0224 . 6. 0195 Inch. .0004 .0024 .0029 Removed from hot bath. Weight, 5 pounds ^ ounce. No. 5017. Fire Brick No. 1, Dimensions, 9".21 x 4".52 x 2".58. Weight, 6 pounds 15^ ounces. Original gauged length in air, r)".9968. Temperature of room, 75° F. Bath. Gauged length. Eemarks. Tempera- ture (de- grees, F,). Time exposed. Total. Successive difference. 52 184 34 Hours. Hi 4 186 Inches. 5. 9067 5. 9994 5. 9008 Inch. .0001 .0024 .0026 lU'iuoved from liot liath. Wuight, 7 poiiutls 142 ouuces. Placed in cold batli. STONES AND BUILDING MATERIAL. No. 5018. Fire Briok No. 2. 1107 Dimensions, 9".26 x 4".55 x 2",53. Weight, 6 pounds 13^ ounces. Original gauged length in air, 5".9988. Temperature of room, 75° F. Bath. Grauged length. Remarks. Tempera- tare (de- , greea, F.). Time exposed. Total. Successive difference. 52 184 34 Sours. 42i 44 186 Inches. 5.9984 6.0010 5.9988 Inch. .0004, .0026' .0022 Kemoved from hot bath. Weight, 7 pounds 13i onnces. Placed in cold bath. No. 5019. Hollow Fire proof Building Block, prom St. Paul, Minn. Weight, 10 pounds 12J ounces. Dimensions, 12" x 6" x 4=". Hollow core, If" x 3|". Original gauged length in air, 10".0036. Temperature of room, 75° F. Bathl Gauged length. Kemarks. Tempera- ture (de- grees, F.). Time exposed. Total. Successive dilforence. 185 60 34 Howrs. 4i 164 53i Inches. 10. 0076 Inch. .0040 Weight, 12 pounds 13 ounces. 10. 0032 .0044 No. 5020. Ashler Brick, marked Ei, from Fiske, Coleman & Co., Boston, Mass. Dimensions, 12" x 3" x 4". Weight, 8 pounds 13f ounces. Original gauged length in air, 10".0218. Temperature of room, 75° F. Bath. Gauged length. Hemarks. Tempera- ture (de- grees, F.). Time exposed. Total. Successive difference. 185 60 34 Sours. 164 53i Inches. 10.02i5 Inch. .0027 AVeight, 9 pounds 9i ounces. 10.0217 .0028 1108 STONES AND BUILDING MATEEIAL. to o Eh O I H o I o o o o s •3t^ * in(o-Heco e = (MiM 009 oao<-( m in m ci oo r:t< oo o> ©OOOOOOOOOOO ^OOOOOOO O^OOOOt^OOOOO C^OOOO^^i^ oooooooooooo oeoooooo 000000000^:30 OO^OiOOOO oooooooiocseoo oooooeoo KfiooNt-mmcotraoONeaos eowoj^CMMca^ eS r-l — ' ^ -H -J -H r-l i-l ^ ^ r-1 O OOOOOOOO ^oooooooooooo 00000000 Olftt-i-llftWWOr-C^COO 'Nffl'^WCOCOl'-eq . urs --H r-( o M in o in lO ^ »n tH ^s< o o> oj to 00 — ' m OeOi— (<— I^OOOO-^OOCO CCrHCOi-HOOe^O u o o 00 o a» o 03O o 03 o ooo>oa>a>oo uooooooioaioooiaa ot0toeokOiaoo -gMMCMWC^rlMlHMIMi-Hrt r-(r-* H oocccj«Dt-irat-ooo«oo)»- .eoc SS-^WM!N— i-l'*-E=9,302,000. >E=8,333,000. ■ E=7,018,00b. Test discontinued. 1112 STONES AND BUILDINa MATERIAL. No. 5003&. Vbemont Marble. teansvebsb test. Applied loads. Deflections. Successive deflections. Deflection sets. Kemarka. Total. Maximaii) fiber stress. Pownds. 500 1,000 1,500 . 2,000 2,500 3,000 3,500 4,000 4,500 5,000 Inch. 0. .0007 .0017 .0029 .0040 .0050 .0060 .0070 .0083 .0096 Inch. 0. .0007 .0010 .0012 .0011 .0010 .0010 .0010 .0013 .0013 » Inch. 0. Initial load. Ultimate strength. .0010 998 . 0035 ■ -* - Five thousand pounds total load was applied and released, second application of this load caused rupture of the stone. The STONES AND BUILDING MATEEIAL 1113 No. 5004a. Lee Maeble. compression test. Length, 23".97. Sectional area, 6"x3".97=23.82 square inches. Gauged length, 20". Applied loads. In ganged length. Eemarks. Total. Per square iQcn. Compres- sion. Set. Poimds. 2,382 4,764 9,528 14,292 19, 056 23. 820 28, 584 33,348 , 38, 112 42, 876 47, 640 57, 168 66, 696 76i224 85,752 95, 280 104, 808 114, 336 123, 864 133, 392 142, 920 95, 280 47, 640 23, 820 23, 820 47, 640 . 95, 280 142, 920 152, 448 161, 976 171, 604 181, 032 190, 560 20O, 088 209, 616 219, 144 228,672 238, 200 190, 560 142,920 95, 280 47, 640 23, 820 23,820 47,640 96,280 142, 920 190, 560 238,200 190, 560 142,920 95, 280 47, 640 23, 820 142, 920 114, 300 114, 336 142, 920 190,560 238,200 247, 728 257, 256 266, 784 276, 312 285,840 Pounds. 100 200 400 600 800 1,000 1,200 1,400 1,600 1,800 2,000 2,400 2,800 3,200 3,600 4,000 4,400 4,800 5,200 5, 600 6,000 4,000 2,000 1,000 1,000 2,000 4,000 6,000 6,400 6,800 7,200 7, 600 ' 8,000 8,400 8,800 9,200 9,600 10, 000 8,000 6,000 4,000 2,000 1,000 1,000 2,000 4,000 6,000 8,000 10, 000 8,000 6,000 4,000 2,000 1,000 6,000 4,798 4,800 6,000 8,000 10, 000 10, 400 10, 800 11, 200 11, 600 12, 000 Inch. 0. .0006 .0019 .0030 .0041 .0051 .0059 .0067 .0074 .0080 .0085 .0094 .0103 .0112 .0119 .0126 .0132 .0140 .0146 .0163 .0161 .0129 • . 0090 .0063 ,oo5o .0080 .0124 , . 0159 .0164 .0173 .0179 .0185 .0192 . 0197- .0202 .0207 .0216 .0224 .0194 .0161 .0127 .0087 .0058 .0046 .0076 .0119 .0155 .0189 .0221 .0191 .0159 .0125 .0085 .0058 .0154 Inch, 0. Initial load. ■E = 6,667,000. .B = 10,256,000. ■E =11,765,000. ■B = ll,429,000. •E = 11,765,000. E=12,903,000. Load left on stone over night. Load on stone in the moining rest. after 15 hours' .0011 .0015 .0017 .0018 .0014 .0012 .0013 .0134 .0152 .0186 .0219 .0225 .0331 .0238 .0245 . 0262- .0009 IIU STONES AND BUILDING MATERIAL. No. 5004a — Continued. Applied loads. In ganged lenglh. Bemarks. Xotal. Per square inch. Compres- sion. Set. Pownds. 295, 368 304, 896 314, 424 323, 052 333.480 238,200 142, 920 47, 640 23, 820 23, 820 47,640 142,920 238, 200 142,920 238, 200 333,480 343,008 352, 536 362, 064 371, 692 381, 120 333, 480 238, 200 142, 920 47, 640 23, 820 23, 820 47, 640 142, 920 23,820 333, 480 Founds. 12,400 12, 800 13, 200 13, 600 14,000 10, 000 6,000 2,000 1,000 1,000 2,000 6,000 10, 000 6,000 10, 000 14, 000 14, 400 14, 800 16, 200 15,600 16, 000 14, 000 10, 000 6,000 2,000 1,000 1,000 2,000 6,000 1,000 14, 000 Inoh. .0259 .0264 .0272 .0279 .0285 .0227 .0162 .0085 .0057 .0044 .0074 .0155 .0223 .0160 .0224 .0286 .0292 .0300 .0308 .0316 .0324 .0294 .0234 .0169 .0089 .0061 .0049 .0079 .0161 .0229 .0291 Inch. E=12,500,0D0. ■T: = 11,765,000. Test discontinned. .0011 .0016 .0015 STONES AND BUILDING MATERIAL. No. 50046. Lee Maeblb. transverse test. 1115 Applied loads. Defiections. Snooessive defiections. Deflection sets. Eemaris. Total. Maximum fiber stress. 500 1,000 1,500 2,000 2,500 3,000 3,500 4,000 4,500 5,000 5,600 6,000 6,500 7,000 7,500 7,940 Inch. 0. .0006 .0015 .0022 .0032 .0037 .0046 .0053 .0059 .0067 .0076 .0082 .0090 .0097 .0107 Inch. 0. .0006 .0009 . 0007 .0010 .0005 .0009 .0007 .0006 .0008 .0009 .0006 .0008 .0007 .0010 Inch. 0. Initial load. Ultimate strength. .0010 .0019 .0031 1,584 1116 STONES AND BUILDING MATERIAL. No. 5005a. Potomac Eed Sandstone, compression test. Length, 24".01. Sectional area, 6".01 x 4".02 = 24.16 square inches. Gauged length, 20". Applied loads. In gauged length. 1 Bemarks. Total. Per square inch. Compres- sion. Set. Pounds. 2,416 4,832 9,664 14,496 19, 328 24, 160 33, 824 43,488 53, 152 62, 816 72, 480 82, 144 91, 808 101, 472 111, 136 120, 800 130,464 140, 128 149, 793 159,466 169, 120 120, 800 72,480 24,160 24, 160 72, 480 120, 800 169, 120 178, 784 188, 448 198, 112 207, 776 217, 440 169, 120 120, 800 72, 480 24, 160 24, 160 72,480 120, 800 169, 120 217,440 227, 104 236,768 240, 432 256, 096 265,760 217,440 169, 120 120, 800 72,480 24,160 24.160 72,480 120, 800 169, 120 217, ..-40 265, 760 217,440 169, 120 150,000 149,792 120, 800 Pounds. 100 200 400 600 890 1,000 1,400 1,800 2,200 2,600 3,000 3,400 3,800 4,200 4,600 5,000 5,400 5,800 6,200 6,600 7,000 5,000 3,000 1,000 1,000 3,000 5,000 7,000 7,400 7,800 8, 200 8,600 9,000 7,000 5,000 3,000 1,000 1,000 3,000 5,000 7,000 9,000 9,400 9,800 10, 200 10,600 11, 000 9,000 7,000 5,000 3,000 1,000 1,000 3,000 5,000 7,000 9,000 11,000 9,000 7,000 6,210 6,200 5,000 Jnoh. 0. .0005 .0015 .0030 .0045 .0060 .0090 .0116 .0138 .0160 .0182 .0202 .0220 .0240 .0258 .0277 .0295 .0312 .0330 .0346 .0365 .0295 .0217 .0116 .0095 .0197 .0283 .0364 .0380 .0396 .0412 .0430 .0443 .0380 .0308 .0227 .0125 .0099 .0202 .0289 .0370 .0449 .0465 .0482 .0499 .0515 .0531 .0467 .0398 .03!* .0239 .0143 .0105 .0210 .0297 .0368 .0457 .0535 .0472 .0403- Inch. 0. Initial load. •E = 3,883,000. •E =4,706,000. ■ E = 5,000,000. ■E = 5,195,000. E = 5,263,000. ■E = 5,000,000. Load left on stone Saturday night. Load found on stone Monday morning hours' rest. after 40 .0010 '" ' .6629' .0039 .0047 .0053 .0060 . 0360 .0325 STONES AND BUILDING MATERIAL. No. 5005a — Continaed. 1117 Applied loadB. Total. Pounds. 72, 480 24,160 265, 760 275, 424 285, OSS 294, 752 304, 41G 314, 080 265, 760 217, 440 169, 120 120, 800 72, 480 24,160 24, 160 72, 480 120, 800 169, 120 217, 440 265, 760 314, 080 265, 760 217, 440 169, 120 120, 800 72,480 24,160 24,160 72, 480 120, 800 169, 120 120, 800 72, 480 24,160 24,160 72, 480 ■ 120, 800 169, 120 217, 440 265, 760 217, 440 169, 120 217,440 265, 760 217, 440 169, 120 217, 440 265,760 217, 440 169, 120 120, 800 72, 480 24,160 Per square inch. Pounds. 3,000 1,000 11, )00 11, 400 11, 800 ■ 12, 200 12, 600 13^000 11, 000 9,000 7,000 5,000 3,000 1,000 1,000 3,000 5,000 7,000 9,000 11, 000 13, 000 11, 000 9,000 7,000 5,000 3,000 1,000 1,000 3,000 5, 000 7,000 6,000 3,000 1,000 1,000 3,000 5,000 7,000 9,000 11,000 9,000 7,000 9,000 11,000 9,000 7,000 9,000 11,000 9,000 7,000 5,000 3,000 1,000 In gauged lengtli. Compcps- sion. Inch. .0241 .0136 .0536 .0550 .0566 .0582 .0600 .0619 .0555 .0489 .0415 , .0337 .0249 .0142 .0114 .0219 .0307 .0389 .0468 .0515 .0623 .0560 .0492 .0419 .0340 .0252 .0143 .0117 .0232 ' . 0312 .0392 .0322 .0243 .0141 .0118 .0223 .0311 .0394 .0472 .0550 .0485 . 0418 .0482 .0549 .0485 .0415 .0482 .0550 .0485 .0415 . 0.'!40 .0253 .0145 Set. Inch. .0063 .0070 .0070 .0071 Hemarks. Test discontinued. 1118 STONES AND BUILDING MATERIAL. No. 5G05&r Potomac Eed Sandstone, tbansverse test. Applied loads. Deflections. Successive deflections. Deflection sets. 1 Eemarks. Total. Maximum fiber stress. Pounds. 500 1,000 1,500 2,000 2, 500 3,000 3,500 4, 000 4,500 5,000 5,500 6,000 6,500 7,000 7,600 8,eoo S,500 9,000 9, 600 10, 000 10,500 11, 000 11, 500 11, 820 Inch. 0. .0005 .0011 .0018 .0026 .0034 .0042 .0050 .0058 .0067 .0076 .0084 .0091 .0100 .0107 .0117 .0126 .0133 .0141 .0160 .0159 .0167 .0177 ' Inch. 0. .0005 .0006 .0007 .0008 .0008 .0008 .0008 .0008 .0009 .0009 .0008 .0007 .0009 .0007 .OOiO .0009 .0007 .0008 .0009 .0009 .0008 .0010 Inch. 0. Initial load, intimate strength. % .0007 .0021 .0046 2,320 STONES AND BUILDING MATERIAL. No. 5006a. .Portland Ebd Sandstone. compression test. 1119 Sectional area, 23.70 square inches. Gauged length, 20". Applied loads. 111 gauged length. Beniarks. Total. Per square inch. Compres- sion. Set. -Pounds, 2,370 4,740 .9,480 14, 220 18, 960 23, 700 33, 180 42, 660 52, 140 61, 620 71,100 80, 580 90, 060 99, 540 109, 020 118,500 127, 980 137,460 146,300 Pounds, 100 200 400 600 800 1,000 1,400 1,800 2,200 2,600 3,000 3,400 3,800 4,200 4,600 -5, 000 5,400 5,800 ' 6,173 Iniih, 0. .0012 .0048 .0080 .0107 .0133 .0177 .0220 .0257 .0298 .0335 .0374 .0411 .0445 .0482 . 0520 .0566 .0606 Inch. 0. Initial load. ■E—2, 740,000. 'E=2,703,000. Ultimate strength. .0052 .0108 .0145 Oblique longitudinal fractures separating stone into wedge shaped fragments. 1120 STONES AND .BUILDING MATERIAL. No. 5007a. Ohio Sandstone. ' compression test. 23!'96 Sectional area, 23.74 square inches. Gauged length, 20". Applied loads. In gaueed length. Total. Per square incli. Compres- sion. Set. . Pounds. 2,374 4,748 Pounds. 100 200 400 600 800 1,000 1,200 1,400 1,600 1,800 2,000 1,800 1,600 1,400 1,200 1,000 800 600 400 200 200 400 600 800 1,000 1,200 1,400 1,600 1,800 2,000 840 1,000 2,000 2,200 2,400 2,600 2,800 3,000 3,000 3,200 3,400 3,600 3,800 4,000 3,000 2,000 1,000 1,000 2,000 Inch.' 0. .0016 .0053 .0097 .0137 .0174 .0205 .0231 .0258 .0280 .0303 .0288 .0273 .0255 .0238 .0216 .0194 .0167 .0134 .0090 .0075 .0110 .0143 .0172 .0197 .0220 .0241 .0262 .0282 .0301 Inch. 0. Initial load. 9,496 14, 214 18,992 23, 740 28, 488 .0024 .0035 33, 236 37, 984 .0046 • E= 1,887,000. 42, 732 47, 480 .0052 42, 732 37, 984 33, 236 28, 488 23, 740 18, 992 14,244 9,496 4,748 4,748 .0058 9,496 14, 244 18, 992 23, 740 i-E=2,353,000. 28, 488 33, 236 37, 984 42, 732 47, 480 20, 000 23, 740 .0205 .0298 .0318 .0342 .0360 .0384 .0403 .0407 .0425 .0442 .0462 , . 0482 .0603 .0435 .0354 .0252 .0222 .0327 47, 480 52, 228 56, 976 .0060 61, 724 66, 472 .0068 71, 220 71, 220 .0073 75, 968 80, 716 85,464 90, 212 ■E = 2,128,000. 94, 960 71, 220 47, 480 23, 740 23, 740 .0079 47,480 Kemarks. STONES AND BI/ILDING MATEKIAL. 1121 No. 5007a — Continued. I Applied loads. In gauged length. EeMarkH. l" Total. Per square iucl). Compres- sion. Set. Foimda. . 71,220 94, 960 99,708 104,456 109,204 113,952 118, 700 94,960 71,220 47,480 23,740 23,740 47,480 71,220 94,960 118, 700 123, 448 128, 196 132,944 137, 692 138,500 Pounds. 3,000 4,000 4,200 4,400 4,600 4,800 5,000 4,000 3,000 2,000 1,000 1,000 2,000 3,000 4,000 .5,000 5,200 5,400 5, 600 .5, 800 5,834 Inch. .0418 .0609 .0527 ,0548 .0568 .0589 .0614 .0548 .0470 .0382 .0270 .0233 .0345 .0440 .0530 .0622 .0649 .0673 .0703 .0748 Inch. r ■E=l,980,000. \fy 1 ) Ultimate strengtli. .0089 H. Ex. 165 71 1122 STONES AND BUII/DING MATERIAL. No. 5008a. MoNSON (Me.) Slate. COMPBBSSION TEST. Zxnes showitvg cti-rectum. of cleavage jilanes of -fhe stone. /" u \ 1 "1 < 34!:07 . > Sectioual area, 25.13 square inch. Gauged length, 20", Applied loads. In gauged length. Bemarks. ' , Total. Per sqizaie inch. Compres- sion. Set. Pounds. 2,513 6,026 10, 052 16, 078 20, 104 25. 130 60; 260 75,390 100, 620 125, 650 150, 700 175, 830 200, 960 203, 000 Povnde. 100 200 400 600 800 1,000 2,000 3,000 4,000 6,000 6,000 7,000 8,000 8,313 Inch. 0. .0001 .0003 .0006 .0009 .0011 .0018 .0026 .0037 .0050 .0067 .0086 .0109 Inch. 0. Initial load. IE = 12,500,000. SSnapping sounds. SLon^itudiual cracks opened. E = 8,690,000. Ultimate strength. .0002 0. .0001 .0001 Failed by opening longitudinal seams foll6wing cleavage planes of the stone, STONES AND BUILDING MATERIAL. No. 5009a. North Eiver Bluestone, compression test. Length, 23".98.. Sectional area, 6" x 4" = 24" square inches. Gauged length, 20". 1123 Applied loads. iotal. Per square inch. 'In gauged length. Compres- sion. Set. Semarks. Pounds* 2,400 4,800 9,600 14, 400 19, 200 24, 000 33, 600 43, 200 62, 800 62, 400 72, 000 81, 600 91, 200 100, 800 110, 400 120, 000 129, 600 139, 200 148, 80O 158, 400 168, 000 177, 600 187, 200 196, 800 206, 400 216, 000 225, 600 235, 200 244, 800 254, 400 264, 000 216, 000 168, 000 120, 000 72, 000 24,000 24, 000 72, 000 120, 000 168, 000 210, 000 264, 000 216, 000 168, 000 216, 000 264, 000 273, 600 283, 200 292, 800 302, 400 312, 000 321, COO 331,200 340, 800 350, 400 360, 000 312. 000 264, 000 216, 000 168, 000 120, 000 73, 000 24, 000 Founds. 100 2i:o 400 600 800 1,000 1,400 1,800 2,200 2,000 3,000 3,400 3,800 4,200 4,600 5,000 5,400 5,800 6,200 6,600 7,000 7,400 7,800 8,200 8,600 9,000 9,400 9,800 10, 200 10, 600 11,000 9,000 7,000 5,000 3,000 1,000 1,000 3,000 5,000 7,000 9,000 11,000 9,000 7,000 9,000 11,000 11, 400 11, 800 12, 200 13, 600 13, 000 13, 400 13, 800 14, 200 14, 600 15, 000 13, 000 11,000 9,000 7,000 5,000 3,000 1,000 Inch. 0. .0001 .0006 . 0012 .0020 .0027 .0045 .0065 .0085 .0108 .0129 .0150 .0170 .0190 - . 0210 .0230 .0249 .0265 .0281 .0300 . 0315 .0332 .0347 .0360 .0375 .0389 .0403 .0415 .0428 .0439 .0460 .0407 .0357 .0297 .0219 .0110 .0084 .0170 .0260 . 03.^5 .0398 .0453 .0410 .0359 .0406 .0455 .0467 .0478 .0483 .0499 .0510 .0523 .0535 .0544 .0555 .0565 .0524 .0430 .0433 .0389 .0318 .0235 . 0123 Inch. 0. .0030 Initial load. 1 ^E = 7, 500,000. ) 1 J. E = 4,651,000. J 1 VE = 4,444,000. J 1 >>E= 5,405,000. .0041 Ie = 6, 153,000. 1,15=7,273,000. .0056 .0057 . 0(>59 .0064 E = 7,017,000. E = 8,696,000. 1124 STONES AND BUILDING MATERIAL. No. 6009ft— Continued. Applied loads. Total. PouTide. 24, 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 600 000 600 200 800 400 000 000 000 000 000 000 000 000 000 ooo 000 000 000 ooo 000 000 000 000 600 200 800 400 000 000 000 000 000 000 000 000 000 000 120, 168, 216, 360, 264, 240, 216, 168, 120, 72, 24, 24, 72, 120, 168, 216, 264, 273, 360, 369, 379, 388, 398, 408, 360, 312, 264, 216, 168, 120, 72, '24, 24, 72, 120, 168, 216, 264, 312, 360, 408, 417, 427, 436, 446, 456, 408, 360, 312, 264, 216, 168, 120, 72, 24, 72, 120, 168, 216, 264, 312, 360, 408, 456, 24,000 000 000 000 000 000 000 000 000 000 Per square incli. Pounds. 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 400 800 200 600 000 000 000 000 000 000 000 ooo 000 000 000 ooo 000 000 000 000 ooo 000 400 800 200 600 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 Id gauged length. Coraprea- sion. Inch. .0092 .0180 .0270 .0345 .0410 .0567 .0480 .0385 .0322 .0241 .0129 .0088 .0185 .0274 .0350 .0412 .0467 .fl517 .0565 .0575 .0584 .0593 .0603 .0614 .0572 .0530 .0485 .0438 .0385 .0321 .0238 .0125 .0093 .0184 .0275 .0350 .0415 .0469 .0519 .0668 .0617 .0630 .0640 .0048 . 06.57 .0666 .0628 .0585 .0541 .0495 .0447 .0392 . 0329 . 0243 . 0129 .0099 .0187 .0279 .0355 .0420 .0475 .0523 .0573 .0620 .0667 Set. Inch, .0070 Kemarks. Rested under this load over niglit— 15 hours. Loail ou stone in the morning. •E=8,163,000. ;.E=i 8, 163,000. . 0069 I Test discontinued. STONES AN0 BUILDING MATEEIAtS, No. 5009ft. Forth Eiver Bluestone. 'i'kansvbese test. Flcartes of stratification. yiarcCLleZ to directi/>n of 'applied. ^ stresses. 23'.'98 1125 Applied loadB. Peflections. Suocessive deflections. Deflection sets. Eemarks. Total. Maximum fiber stress. Fwinii. 500 1,000 1,500 2, 000 2,600 3,000 3,500 4,000 4,500 5,000 6, 600 6,000 6,500 7,000 7,500 . 8,000 8,500 9,000 . 9,500 10,000 10, 500 11, 000 11^500 12,000 12,500 13,000 13,500 14, 000 14,500 15,000 15,600 16,000 16,500 17,000 17,500 18,000 19,000 16,600 20,000 20,500 21,000 21,500 22,000 22,400 Poundf. Jneh. 0. .0005 .0010 .0015 .0018 .0022 .0026 .0030 .0034 .0037 .0041 .0044 .0048 .0051 .0055 .0060 .0063 .0006 .0070 .0073 ' .0077 .0081 .0085 .0088 .0092 .0096 .0099 .0103 .0107 .0112 .0117 .0120 .0125 .0129 .0133 .0136 .0143 .0147 .0151 .0158 .0163 .0167 .0171 Inch. 0. .0005 .0005 .0005 .0003 .0004 .0004 .0004 .0004 .0003 .0004 .0003 .0004 .0003 .0004 .0005 .0003 .0003 .0004 .0003 .0004 .0004 .0004 .0003 .0004 . 0004 .0003 .0004 .0004 .0005 .0005 .0003 .0005 .0004 .0004 .0003 .0007 .0004 .0004 .0007 .0005 .0004 .0004 Inch. 0. Initial load. XJUimato strength. .0003 .0008 .0010 .0015 .0020 .0024 .0030 .0035 4,433 1126 STONES AND BTJILBING MATERIAL. No. 6010a. WoECESTEK. Granite. COMPRESSION TEST. Length, 24".02. Sectional area 6".01x'4".01=24:.l square iucbes. Gauged length 20". Applied loads. Total. Pounds. 2,410 4,820 9,040 14, 460 19, 280 24, 100 33, 740 43, 380 53, O^iO 02, 660 72, 300 81, 940 91, 680 101, 2i0 110, 860 120, 500 130, 140 139, 780 149, 420 169, 060 168, 700 120,600 72, 300 24,100 24, 100 72, 300 120, 600 168, 700 178, 340 187,980 197,820 207, 260 216, 900 168, 700 120, 500 , 72,300 24,100 24, 100 72, 300 120, 600 168, 700 216, 900 Per square inoli. Pounds, 100 200 400 600 800 1,000 1,400 1,800 2,200 2,600 3,000 3,400 3,800 4,200 4,600 5,000 5,400 5,800 6,200 6,6U0 7, OOO 5,000 3,000 1,000 . 1,000 3,000 6,000 7,000 7,400 7,800 8,200 8,600 9,000 7,000 5,000 3,000 1,000 1,000 3,000 6,000 7,000 9,000 In gauged length. Compres- sion, Inch. 0. .0005 .0016 .0025 .0034 .0042 .0055 .0068 .0080 .0090 .0101 .0111 .0121 .0123 .0140 .0150 .0168 .0168 .0177 .0187 .0199 .0167 .0112 .0058 .0050 .0103 .0160 .0197 .0207 .0217 .0226 .0333 .0243 .0203 .0160 .0116 .0060 .0050 .0106 .0166 .0200 .0242 Set. Inch. 0. .0010 .0021 .0022 Kemarks. Initial load. >E=7,547,000. E=8, 611,000. • Criicks at one corner. E = 8,606,000. .E=8,889,000. Pieces flaked off edges at one end. Test discontinued. STONES AND BUILDING MATERIAL. No. 60106. WoEOESTER Granite. TRANSVERSE TEST. 1127 Applied loads. Deflections. Sncoessive deflections. Deflection seta. Eemarks. Total llaximnm fiber stress. Povmds. 500 1,000 1,500 2,000 2,500 3,000 3,500 4,eoo 4,500 5,000 5,600 6,000 6,500 7,000 7,500 8,000 8,500 9,000 9,500 10,000 10,600 Inch. 0. .0008 .0016 .0022 .0028 .0035 .0040 .0046 .0051 .0057 .0062 .0067 .0072- .0077 .0083 .0088 .0093 .0098 .0103 .0108 .0117 Inch. 0. .0008 .0008 .0006 .0006 .0007 .0005 .0006 .0005 .0006 .0005 .0005 .0005 .0005 .0006 .0005 .0005 .0005 .0005 .0005 .0009 Inch. o: Initial load. Ultimate strength. .0008 .0014 .0019 , 2, 066 Sustained maximam load J mlnate, then fractured. 1128 STONES AND BUILbiNG MATERIAL. No. 5011a. QuiNCY Granite. COMPRESSION TEST. Length, 24", S^ctioDal area, 4" x 6=24 square inches. Gauged length, 20". ApplteA loads. TotaL Founds. 2,100 4,800 9,600 14,400 19, 200 24,000 33, 600 43, 200 52,800 62, 400 72, 000 81, 600 91, 200 100, 800 110,400 120, 000 129,600 139, 200 148, 800 158, 400 168, 000 177, 600 187,200 196, 800 206, 400 216, 000 225, 600 235, 200 244,800 254, 400 264, COO 273, 600 283, 200 292, 800 302,400 312, 000 204, 000 216, 000 168, 000 120, 000 72,000 24, 000 24, 000 72, 000 120,000 168, 000 216, 000 264, 000 312,000 Per square inch. Pounds. 100 200 400 600 800 1,000 1,400 1,800 2,200 2,600 3,000 3,400 3,800 4,200 4,600 5,000 5,400 5,800 6,200 6,600 7,000 7,400 7,800 8,200 8,600 9,000 9,400 9,800 10, 200 10, 600 11, OOO 11, 400 11,800 12, 200 12, 600 13, 000 11, 000 9,000 7, 000 5,000 3,000 1,000 1,000 3,000 5,000 7,000 9,000 11,000 13, 000 In ganged length. Compres- sion. Inch. 0. .0003 .0012 .0022 .0031 .0040 .0056 .0068 .0081 .0091 .0103 .0110 .0122 .0132 .0142 .0152 .0163 .0173 .0183 .0193 .0203 .0211 .0221 .0230 .0238 .0248 .0261 .0268 .0278 .0286 .0296 .0305 .0315 .0323 .0333 .0339 .0303 .0263 .0220 .0177 .0128 .0069 .0060 .0119 .0168 .0213 .0266 .0298 .0343 Set. likch. 0. .0008 ■ .0025 .0026 .0028 .0031 Beuarks. Initialload. !.E=6,776,000. >E=8,696,000. .E=8, 333,000. !.E=10,526,000. Snapping sounds. Snapping sounds repeated. >E=8,889,000. >E=10,000,000. Small pieces flaked off at two comers. Test discontinued. STONES AND BUILDING MATERIAL. No. 5011&. QuiNCY Granite. TBANSVEUSE TEST. 1129 24.00 t 19" /, Applied loads. DefleotloBs. Snccessive deflections. Deflection sets. Homarks. Total. Maximum flber stress, Founds. SOO 1,000 1, BOO 2,000 "2,500- J. 3,000 3,500 ■ 4,000" 4, 500 . 5,000 '-■- 5, 500" 6, 000 6,500 7,000 7,500 8,000 8,500 , 9,000- '^,500 ,10,000 Inch. 0. .0000 .0015 .0022 .0030 . 0040 .0046 .0051 . 0038 .0065 .0070 .0076 .'0082 .0087 .0092 .0098 .0103 . 0108 .0113 ■ Inch. 0. .0006 . 0009 .0007 .0008 .0010 .0006 .0005 .0007 .0007 .0005 .0006 .0006 .0005 .0005 .0006 .0005 .0005 .0005 Inch. 0. Initial load, tritimate strength. .0007 " .0015 .0019 1,979 Sustained maximum load momentarily, then fractured. 1130 STONES AND BUILDING MATERIAL. No. 5012a. Cape Ann Granite, oompebssion test. K 24:':00 — 9 Sectional area, 24".14. Gauged length, 19".93. Applied losids. Total. Per square inch. Ill ganged length. Compres-' sion. Set. Kemarks. 2,414 4,828 9,656 14,484 19, 312 24, 140 36, 210 60, 3S0 72, 420 84, 491) 72, 420 60, 350 86,210 24,140 12, 070 12, 070 24,140 36,210 60, 350 72,420 84,490 96,560 108, 630 120, 700 108, 630 06, 560 84, 490 72, 420 00, 350 48, '^80 36, 210 24, 140 12, 070 12, 070 24, 140 36, 210 48, 280 60,360 72, 420 84, 400 96, 560 108, 630 120, 700 132, 770 144, 840 156, 910 168, 980 181, 050 193,120 Povnds. .100 200 400 600 800 1,000 1,500 2,500 3,000 3,600 3,000 2,600 1,500 1,000 500 600 1,000 1,500 2,500 3,000 8,500 4,000 4,600 5,000 4,500 4, OOO 3,500 3,000 2,500 2,000 1,500 1,000 500 500 1,000 1,600 2,000 2,600 3,000 3,500 4,000 4,600 5,000 5,500 6,000 6,600 7,000 7,500 8,000 Znc7t. 0. .0006 .0016 .0025 .0034 .0043 .0063 .P097 .0111 .0126 .0115 .0101 .0073 .0055 .0035 . OUiiO .0050 .0067 .0098 .0112 .0127 .0140 .0155 .0170 .0158 ,0146 .0133 .0120 .0108 .0003 .0078 .0060 .0037 .0032 .0052 .0071 .0087 .0102 .0116 .0130 .0143 .0157 .0170 .0182 .0195 .0209 .0220 .0233 .0246 iTich. 0. .0005 .'ooos' .0011 Initial load. E=6,477,000. E=6,944,000. E=8,197,000 STONES AND BUILDING MATERIAL. No. 5012a — Continued. 1131 Applied loads. Total. Per equate inch. In gaugod length. Compres- sion. Set. Bemarks. Pounds. 168, 980 144, 840 120, 700 96, 560 72, 420 48, 280 24, 140 24, 140 48, 280 72, 420 96, 560 120, 700 144, 840 168, 980 . 193,120 205, 190 217, 260 229, 330 241, 400 253, 470 265, 540 277, 610 289, 680 265,510 241, 400 217, 260 193, 120 168, 980 144, 840 120, 700 96, 560 72, 420 48, 280 24, 140 24,140 48, 280 ■ 72, 420 90, 660 KO, 700 ia,840 168, 980 193, 120 217, 260 241,400 265, 540 289, 680 801,750 313, 820 325, 890 337, 960 350, 030 313, 820 289, 680 265, 540 241, 400 217, 260 193, 120 1G8, 980 144, 840 120, 700 96, 660 72, 420 48, 280 - 24, 140 24, 140 48,280 72, 420 96,-560 120, 700 144, 840 163, 980 193, 120 217, 260 241, 400 265, 540 239, 680 SSO, 000 Ponnds. 7,000 6,000 5,000 4,000 3, 000 2,000 1,000 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8, 000 8,500 9,000 9,500 10, 000 10, 500 11,000 11, 500 12, 000 11,000 10, 000 9,000 8,000 7,000 6,000 5,000 4,000 3,000 2,000 1,000 1,000 2,000 3,000 4,000 5, 000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 12, BOO 13; 000 13, 500 U, OOO 14, 500 13, 000 12, 000 11, 000 10, OOO 9,000 8,000 7,000 6,000 5,000 4,000 3,000 2,000 1,000 1,000 2,000 3,000 4,000 5, 000 6,000 7,000 8,000 9,000 10, 000 11, 000 12, 000 22,784 Inch, .0225 .0202 .0180 .0156 .0128 .0100 0063 .0065 .0090 .0120 .0147 .0173 .0199 .0224 .0246 .0260 .0270 .0283 .0296 .0307 .0319 .0331 .0344 .0323 .0302 .0280 .0358 .0235 .0212 .0183, .0162 .0135 .0103 .0067 .0056 .0092 .0123 .0151 .0178 .0202 .0227 .0252 .0277 .0299 .0322 .0345 .0357 .0368 .0380 .0393 .0402 .0372 .0352 .0330 .0310 .0287 .0265 . 0241 .0217 .0192 .0166 .0138 .0106 .0087 .0058 .0095 .0125 .0163 .0180 .0206 .0230 .0265 .0280 .0302 .0326 .0348 Inch. .0015 .E = 8,386,000. ^ E = 8,897,000. Cracked at one comer. Corners flaked ofll. 1132 STONES AND BUILDING MATERIAL. No. 5012a — Continued. Applied loada. In ganged length. Eemarka. Total. Per square Inch. Compres- sion. Set. Pounds. 2,414 48, 280 ,96,560 144,840 193, 120 241,400 289, 680 241,400 193, 120 144, 840 96, 560 48, 280 289, 680 313, 820 •337, 960 362, 100 386, 240 410, 380 434,520 458, 660 482, 800 458, 660 434, 520 410,380 . 886, 240 362, 100 337, 960 313, 820 289, 680 241,400 193, 120 144, 8i0 96, 560 48,280 584, 100 Pounds. lOO 2,000 4,00« 6, 000 8,000 10, 000 12, 000 10,000 8,000 6,000 4,000 2,000 12, 000 13, COO 14, 000 15, 000 16, 000 17, 000 18, 000 19, 000 20, 000 19, 000 18, 000 17, 000 16, 000 15, 000 14, 000 13, 000 12, 000 10, 000 8,000 6,000 4,000 2,O0U 24, 196 Inch. Inch. .0035 No allowance made for reduction in seclional area on account of corners flaking off. Ultimate strength. .0122 .0177 .0282 .0287 .0335 .0aS3 .0338 .0294 .0242 .0190 .9126 .0385 .0409 .0432 .0455 .0477 .0502 .0525 .0548 .0667 .0548 .0529 .0510 .0487 .0467 .0448 .0420 .0400 .0353 .0303 .0252 .0195 .0130 .0035 .0037 STONKS AND BUILDING MATERIAL. No. 502l! Cape Ann Granite. Second Specimen, tkansverse test. 1133 Applied loads. i>efieot]OBs. Snooessive deflections. Deflection sets. Kemarjss. Total. Maxlmiim fiber stress. l^ounde. 500 1,000 1,51)0 2,000 2,500 3,000 3,500 4,000 4,500 6,000 5,500 6,000 6,500 7,000 7,500 8,000 . 8,500 9,.C0O 9,500 10,000 10,500 11,000 11,600 12,000 12,500 Pounds. Inch. 0. .0008 .0013 .0018 .0023 .0027 .0032 .0037 . 0010 .0045 .0049 .0052 .0065 .0059 .0064 .0070 .0072 .0076 .0080 .0083 .0088 .0093 .0097 .0101 Inch. 0. .0008 .0005 .0005 . 0005 .0004 .0005 .0005 .0003 .0005 .0004 .0003 .0003 .0004 .0005 .0006 .0002 .0004 .0004 .0003 .0005 .0005 .0004 .0004 Inch. 0. Initial load. Ultimate strength. .OOOS .. .0010 .0012 .0018 2,392 1134 STONES AND BUILDING MATEKUL I ft. o o I i g si ^ f ii , .M S 1 II 1 m 00 (0 5, 0) o o S^ K ^ . ■§ . . ^^ l« l«« -^1 P P BtB ai gjgO osoo « 1^ Ssoi o> P3 rtW •jroa-rt e«r S ^f ea rJ' eJo'cT M* i n 1 WrHrH rH 1 i§g*i ►? AAA OfflOS OS H iHiHrH rH t^ S-M AOg fO^rfS ^ SO OSOrH 1-S Soo ^^ lOWiO IOU3IO US « p f3ooooc:3t*cra>-iooee> 3 a Fx^ :j J M S rt a g l^aassasgsssss SeMCOTHe4(oo'(f O rH Dl ■ |Si iU IP Ski 9tC ?5 ',5 1 i s •1 > M TENSILE TESTS OF LINEN SHOT LINES ~ FOK . SUPERINTENDENT U. S. LIFE-SAYING SEMICE, WASHINGTON, D. C. LINES MANUFACTUKED FUOM SMITH & DOVE'ri LINEN SAIL TWINE. H35 LINEN SHOT LINES. No. 4 Shot Lines. 1137 Diameter of lines, ".14. Lay, one turn in ".50. Three strands of four threads each. test, Weight of coil. 3601 3605 3606 3607 3608 3609 3610 3611 3612 3613 3614 3615 3616 3617 3618 3619 3620 3621 3622 3623 3624 3625 3626 3627 3628 3629 3630 3631 3632 3635 3636 3637 3638 3639 3640 3641 3642 .3643 3644 3645 3646 3647 3648 3649 3650 3651 3652 3663 3654 3655 3656 3657 3658 3659 3660 3661 3662 3663 3664 3665 3666 3667 3668 3669 3670 3671 3672 PoUTldB. 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 11 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10- 10 10 10 10 10 10 10 11 10 10 10 10 10 10 11 11 11 11 11 10 11 10 10 10 10 10 10 10 10 Ounces 13 12 15 14 15 13 14 15 13 14 13 14 14 15 14 14 IS 15 14 1 15 14 15 16 15 14 14 14 14 15 15 15 15 15 15 15 15 15 15 -1 15 15 14 15 14 15| 15 15 1 14 14 13 14 14 15 1 2 1 1 1 15 15. 15 15 12 15 15 14 14 End of coil tested. Inside ... ....do..., ...do'... ...do.... ...do.... ...do.... ...do.... ...do..., ...do... ....do... ...do..., ...do... ....do ... ....do... ....do... ....do... ... do... ....do ... ...do... ...do... ...do... ....do... ....do... ...do... ....do ... Oatside . ....do... ....do... ....do... ....do... ....do ... ...do... ....do... ....do... ....do... ....do... ....do... ....do... ....do... ....do... ....do... ....do... ....do... ....do... ....do... ....do... ....do... ....do ... ....do ... ....do... ....do... ....do ... ....do... ...do... ....do... ...do... ....do... ..do ... ..do... ....do ... ....do... ...do ... ....do... ...do... ...do... ...do... ...do ... ...do... ..do... ...do... ...do... ...do... Tensile strength. Pound/. 360 320 316 405 320 340 315 340 3:j5 355 296 305 350. 335 315 290 360 305 330 345 350 340 330 290 315 200 300 325 300 295 290 295 325 300 325 300 205 310 2B0 250 260 300 330 310 290 325 250 270 275 300 325 330 300- 290 320 300 310 280 305 315 325 305 285 305 315 300 285 320 305 290 310 310 Fractured. At middle. 6" from pin. 1 foot from pin. 6" from piu. At middle. Do. 1 foot from pin. Do. 6" from pin. Do. At middle. Do. 6" from pin. 1 foot from pin. 6" from pin. Do. 1 foot from pin. 6" from pin. 1 foot from pin. At middle. 6" from pin. Do. Do. 1 foot from pin. At middle. 6" from pin. At middle. 1 foot from pin. At middle. Do. 1 font from pin. Do. 6" from pin. At middle. Do. 1 foot from pin. At middle. Do. 1 foot from pin. At pin. At middle. -Do. 6" from pin. 1 foot from pin. At pin. At middle. Do. Atpin. Do! At middle. Do. 1 foot from pin. At pin. 1 foot from pin. At middle. 1 foot from pin. Atpin. At middle. 6" from pin. 1 foot from pin. At middle. 6" from pin. At pin. 1 foot from pin. Do. Do. Do. At middle. 1 foot from pin. At pin. 1138 LINEN SHOT LINES. ISo. 4 Shot Lines— ^Continued. No. of teat. Weight of coil. End of coil tested. Tensile strength. Fractured. 3073 3674 3675 3676 8677 3078 3679 3080 3681 •3682 3683 3684 3685 3686 36S7 3688 3689 3693 3691 3695 8696 8697 3698 3690 8700 3701 3702 !703 Pounds 10 10 10 10 10 10 10 10 10 10 10 11 11 11 11 10 10 10 10 10 10 11 10 11 10 10 10 10 10 10 11 3704 11 3705 11 3706 H 3707 H 3708 11 . 3709 11 371C 11 3711 11 3712 11 3713 11 3714 11 8715 11 3716 11 3717 11 3718 11 3719 11 3720 11 3721 n .3722 11 3723 11 3724 11 3725 11 3726 11 3727 11 3728 ■ 11 3729 11 .8730 11 3731 11 3732 n 3733 11 8734 11 8735 11 3736 u 3737 u 3738 11 3739 11 8740 n 3741 11 3742 n 3743 11 3744 11 3745 11 3746 11 Ounces. 14 14 15 15 15 15 14 13 14 14 13^ 1 1 2 14 14 14 14 13 13 1 14 14 15 14 15 13 14 6 6 J Outside . ....do ... ...do... ....do ... ....do .-- ....do ... .. do ... ....do ... ....do ... ....do... ....do .-. ...do... ....do... ....do... ... do... ...do... ...do ... ., do ... ...do ... ....do... ... do ... ... do ... ....do ... ....do ... ..do ... ..do ... ..do ... - do ... ..do .... ..do ... ..do .... ....do.... .. do-... ...do.... do .... Inside ... Outside.. ...do .... .. do .... ...do.... .. do.... ...do .... ....do .... ...do .... ...do .... .. do-... ... do .--- do .... ...do .... ....do.... ...do.... ....do.... ....do .... .--.do .... .--.do-... ...do.... ... do-... ..-.do .... ...do.... .--.do.... ...do.... .-..do .... .--.do:... ....do .... .--.do.... ....do.... .. do .... ...do.... ... do.-.. ....do-... ....do .... ... do.... ...do .... .. do .... ...do .... ...do .... Inside ... ...do .... ...do.... Pounds 295 286 295 310 305 290 285 290 290 285 250 300 325 330 305 315 300 295 290 290 315 310 305 290 300 300 305 290 280 320 295 310 300 275 270 340 330 315 305 305 320 300 830 290 340 295 330 285 300 805 300 305 310 310 300 280 290 305 310 305 280 300 320 300 305 300 310 325 315 300 305 205 260 280 335 300 340 320 At middle. At pin. 6" from pin. At middle. Do. Do. 1 foot from pin. Do. At pin. 1 foot from pin. Do. At middle. Do. _ Do. At pin. At middle. 6" from pin. 1 foot from pin. 6" from pin. At middle. Do. Do. Do. ^(i pin. , At middle. 6" from pin. 1 foot from pin. 6" fiom pin. 1 foot from pin. At pin. At middle. Do. Do. Ifoot from pin. At middle. 6 " from pin. Do. Do. 1 foot from pin. 6 " from pin. Do. 1 foot from pin. Do. At middle. 6 " from pin. Do. 1 foot from pin. At middle. 1 foot from pin. 6 " from pin. At middle. 6 " from pin. 1 foot from pin. At pin. At middle. 6 " from pin. 1 foot from pin, « At pin. Do. At middle. Do. 1 foot from pin. 6 " from pin. Do. At middle. 6 *' from pin: At middle. 1 foot from pin. At middle. 1 foot from pin. At middle. Do. 6 " from pin. Do. Do. At middle. 1 ibot from p in. At middle. 6 " from pin. LINEN SHOT LINES. No. 4 Shot Lines — Continued. 1139 No. of test. Weight of coil. End of coil tested. Tensile strength. rraotured. 3747 3748 3749 3750 3751 3752 4039 40^0 4041 4042 4043 4044 4045 4046 4047 4048 4049 4050 4051 4062 4053 4054 40.15 4056 4057 4058 40.'>9 - 4060 4061 4062 4063 4064 4065 -4066 4067 4068 4Qi>9 4070 4071 4072 4073 4074 4075 4076 4077 4078 4079 4080 4081 1082 4083 4084 4085 4086 4087 4088 4089 4000 4091 4092 4093 4094 4095 4098 4097 4098 4099 4100 4101 4102 4103 4104 4106 4106 4107 4108 Pounds 11 11 11 11 11 11 11 U 11 II 11 .11 ;i 11 11 11 11 11 11 n 11 11 11 11 11 11 11 11 11' 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 .11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 (htnees, 4 3 2 3 1 4 4 4 5 4 5 ? 74 Inside .. do ...do ...do ..... .. do ..do Outside. . .. do ...do .. do .... ...do Inside ... Outside . . .. do .... ...do.... ...do ...do.... .. do...- ...do..-. ...do.... ...do-... .. do ... .- do.... ..do .... ...do .... ...do .... ...do..-- ...dd .... ...do.... ...do.... ...do ..-., ...do ...do..-. ...do.... ...do.... ...do.... ...do -.-. ...do.... ...do...- ...do .... ...do ..-- ...do .... ...do .... ...do.... ...do.... ...do .... ...do.--. ...do .... ...do.... -..do.... ...do-... ...do.... ...do .... Inside .. . . ...do .-.do.... ..-.do.... ...do .... ...do.... --.do .... -- do.... ...do .... -- do-... --do.... ...do.... ...do ..-- ...do..-. ...do .... ...do.... ...do.... ...do.-. ...do.... ...do.... .. do .... ...do.... ...do.... ...do .... ...do .... ...do .... Pounds. 339 300 330 310 309 330 305 312 19S 264 328 312 346 332 341 373 361 338 342 332 394 349 332 347 352 318 326 370 364 402 397 319 388 382 380 402 374 350 299 348 346 344 376 351 359 336 348 33S 362 336 349 330 346 345 380 402 378 340 338 344 390 345 360 389 379 398 369 329 361 310 390 316 368 308 332 39d 303 308 298 At middle. 1 foot from pin. At middle. 1 fbot from pin. Do. Do. Do. At pin. 1 foot from pin. At middle. 1 foot from pin. At middle. 14 feet from pin. At middle. At pin. At middle. 1 foot from pin. At middle. Do. 1 foot from pin. A.t middle. Do. 1 foot from piri. At middle. Do. At pin. 1 foot from pin. At pin. iJo. 1 foot from pin. At middle. Do. At pin. Do. At middle. At pinr 1 foot from pin. Do. At middle. Do. Do. 1 foot from pin. Do. At middle. Do. Do. Doi 1 foot from pin. Do. Atpin. 1 foot from pin. Do. At middle, 1 toot from pin. At middle. At pin. Do. At middle. 1 foot from pin. At middle. Do. At pin. 1 foot from pin, Atpin. At middle. At pin. At middle. 1 foot from pin. At middle. 6" from pin. At middle. At pin. At middle. At pin. 1140 LINEN SHOT LINES, No. 4 Shot Lines— Continued. No. of test. Weight of coil. End of coil tested. Tensile strength. Fractured. 4109 4110 4111 4112 4113 4114 4115 4116 4117 4118 4119 .4120 4121 4122 4123 . 4124 4125 4126 4127 ■ 4128 4129 4130 4131 4132 4133 4134 4135 4136 4137 Pounds. 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 (hinceg. 6 6 6 '^ f f 6 6 6 6 7 4 4 6 6 4 8 ?* 3 3 ? 3 4 8 Inside Pounds. • 347 386 352 363 337 332 303 324 350 328 308 298 359 341 289 345 328 299 361 278 274 349 316 320 297 297 328 322 350 342 356 At middle. 1 foot from pin. Do. At mi Idle. Do. 1 foot from pin. At pin. At middle. At Din. Do. At middle. Do. 1 foot from pin. At middle. Do. Do. Do. Do. At pin. 1 foot from pin. Do. At middle. I foot from pin. At pin. 1 foot from pin. At middle. At pin. At middle. At pin. At middle. Al middle (Tested wet). ...do ..do .. do . do ....do ..do do ... do do ....do do ...do . do do ....do do ...do ....do ....do do ....do . . do . do do ...do ... do ....do do ....do LINEN SHOT LINES. 1141 Fo. 7 Shot Lines. Diameter of lines, ".2. Lay, one turn in ".7. Three strands of eight threads each. No. of test. ■Weight of coil. Bnd of coil tested. Tensile strength Fractured. 3192 3193 3194 3195 3196 3197 3198 3199 3200 3201 3203 3203 3204 3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 321S 3216 3217 3218 3219 3220 3221 3222 3223 3224 3225 3226 3227 3228 3229 3230 3231 3232 32.33 3231 3235 323B 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247 3248 3249 32.50 3251 3253 3353 3254 3255 3256 3257 3258 8259 3260 '3281 ' Poundt. 8 8 Ounces. 7 11 4 12 11 14 8 6 11 9 11 8 12 12 12 12 8 12 7 8 12 10 11 9 12 9 12 G 11 12 8 8 12 11 8 11 Outside . ....do... ....do... .do... .do ... ....do... do ... ....do... ...do ... ...do .. ....do ... ....do:., ;.L ,10 ... ....do .. ■ Inside . Outside ....do.. ....do.. ....do .. ....do .. ....do .. ....do .. ....do .. ....do.. ....do .. ...do .. ....do.. ....do .. ....do .. ....-do .. ...do .. ....do.. ....do.. ...do .. ..do .. ....do.. ...do .. ...do .. ....do .. ...do.. ....do .. ....do .. ...do.. ....do .. ....do .. ....do .. ...do.. ...do.. ...do ... ... do.. ..do.. Inside . Outside ...do.. ....do .. .i..do.. ....do.. ...do.. ...do.. ...do .. .....do.. .. do.. ...do .. ...do .. ...do.. .. do.. .. do.. ...do .. ...do .. Inside . ...do.. Outside do .. Inside . Poundt. 702 772 796 790 695 740 712 736 7)0 750 802 780 418 810 734 705 694 758 760 .750 695 790 789 755 688 705 792 672 698 768 730 796 770 678 720 680 752 - 710 730 775 727 758 770 788 830 704 708 768 687 705 787 738 772 712 726 758 737 740 '789 785 799 792 773 792 767 753 7l2 706 745 648 800 662 1 foot f roni pin. At pin. Do. Uo. 1 foot from pin. At pin. 1 foot from pin. At pin. At middle. Do. At pin. At middle. At pin. At middle. 1 foot from pin. At pin. 1 foot irom pin. At pin. 1 foot from pin. At pin. 6" from pm. At pin. 6" from pin. 1 foot from pin. At pin. 10" from pin. Atj)in. 1 foot from pin. At middle. At pin. Do. Do. 1 foot from pin. At pin. Do. Do. 1 foot from pin. 15" from pin. At pin. 3" from pin. At pin. - Do. Do. 6" from pin. At middle. At pin. Do. Do. Do. Do. 8" from pin. At pin. 6" from pin. At pin., 1 foot from pin. At pin. 3" from pin. At pin. 3" from pin. 1 foot fiom pin. Do. 8" from pin. At pin. 8" from pin. 6" from pin. 1 foot from pin. At pin. 1142 LINEN SHOT LINES, No. 7 Shot Lines— Continued. n'o. of test. Weight of coil. End of coil tested. Tensile strength. Fractured. Pounds Ounces. Inside Pounds. 760 692 692 720 782 778 810 791 -787 720 772 692 748 576 780 674 815 766 704 788 782 8U6 681 785 785 691 769 648 544 728 725 10" from pin. , 6" from pm. At pin. 1 foot from pin. At pin. 1 foot from pin. At pin. 8" from pim At pin. 1 foot from pin. At pin. So. Do. At pin. At middle. At pin. At middle. Do. 1 foot from pin. At pin. 1 foot from j)in. 10" from pin. 8" from pm. 6" from pin. 1 foot from pin. 6" from pin. 8" from pin. 3262 3263 3264 3265 3266 3267 3268 3269 3270 3271 3278 3273 3274 18 18 18 18 18 18 18 18 18 18 18 18 18 9 10 8 14 12 8 13 6 8 13 8 8 8 Outside .. do ....do do . ...do ....do ....do ....do do ....do ...: do ...do ....do 3276 3276 3277 3278 3279 3280 3281 3282 3283 3284 3285 3286 3287 3288 18 18 18 18 18 18 18 18 18 18 18 18 18 18 5 12 9 11 9 10 10 7 8 10 6 4 13 9 ....do ....do do ....do do . . do ....do ....do ....do do ... do do ...do ....do ....do 3289 18 C ..do ADDITIONAL TESTS OP NO. 7 SHOT LINES. No. 3204. Location of sample in coil. Tensile strength. Kemarks. Pounds. 642 702 592 605 680 698 685 702 668 Parted at long splice -which coxered 39 iinches length of line ; 10" from the end of the outside tuck. Farted at place where two threads were tied together; broke between the knots. Do 600 feet from inside end 200 feet from inside end No. 3288. Total length of line, about 1,800 feet. Location of sample in coil. Tensile strength. Bemarks. Pounds. 540 715 690 720 758 710 676 69' 746 770 762 735 Parted in long splice at middle tuck. Parted 8" from a knot where several threads were tied together. 200 feet from outside end 400 feet from outside end 600 feet from outside end 900 feet from outside end 1,200 feet from outside end 1,600 feet from outside end LINEN SHOT LINES. ELONaATION UNDER STEESS. 1143 No. 3286. Sample from outside end of coil. Gauged length, 6 feet. Applied loads. In gauged length. Bemarks. Elongation. Succe.s8iv6 flloDgation. Pounds. 50 100 150 200 250 300 350 400 450 500 550 600 660 700 704 Inches. -2.60 3. SO 4. SO 4.90 6.20 5.60 S.80 6.10 6.20 6.30 6.60 6.75 6.8S 7.00 Inches. 2.50 1.00 1.00 , .40 .30 .40 .20 .30 .10 .10 .20 .25 .10 .15 Tensile strength. Parted at the pin. No. 7.— SHOT LINES. Waterproofed by means of a coating of parafflne. No. of test. Weight of coil. End of coil tested. Tensile strength. Fractured. 3290 3291 Pounds. 20 21 Ounces. 1 5 Outside Founds. 710 715 At pin. At knot heyond pin. do No. 3291. ELONGATIONS UNDER STRESS. Second sample from outside end of coil. Gauged length, 6 feet. Applied loads. In ganged length. Eemarks. Elongation. Successive elongalion. Pounds. ■60 100 150 200 250 300"^ 350 400 450 500 550 600 650 662 Inches. 1.00 1.70 2.20 2.50 2.80 3.20 3.25 3.35 3.60 3.75 3.98 4.10 4.25 Inches. 1.00 .70 .60 .30 .30 .40 .05 .10 .25 .15 .28 .12 .13 Tensile strength. Parted 6" from thfi nm. 1144 LINEN SHOT LINES. No. 7 Shot Lines. Second lot. Diameter of lines, ".20. Lay, one turn in ".70. Three strands of eight threads each. No. of test. "Weight of coil. End of coil tested. Tensile strength. Fractured. 3889 3890 3891 3892 3893 3894 3895 3896 3897 3900 3901 3901 3905 3906 3907 3908 3909 3910 3911 3912 3913 31)14 3915 3916 3917 3918 3919 3920 3921 3922 3923 3924 3925 3526 3927 3928 3929 3930 3931 3933 3931 3935 3936 3937 3938 3939 3940 3941 3942 3043 3944 3945 3946 3947 3948 3949 3960 3951 3952 3953 3954 3955 3956 3957 3958 Pounds. ' 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 19 19 19 19 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 . 20 20 20 20 20 20 20 20 Ounces. 14 1 ■ 2 8 1 6 7 7J 7- 6 7 1? 6 6 14 14 14 15i 1 1 f 1 84 I' 54 ? 74 54 54 2 J* lOi 13 74 44 44 ? 2 4 24 74 ,^* lOi 9 8 5 5i 4 44 I? 6 64 Outside do do do do :. do do do do do... do do do do do do do do do do do do do do do do do do do do do do do do do ,. do do do do do do do do do Pounds. 712 738 708 772 752 748 754 742 722 760 687 789 794 656 757 710 733 685 724 752 755 748 788 754 715 760 713 >790 788 802 755 775 797 745 784 691 752 810 815 810 793 800 770 580 660 694 705 790 688 708 766 797 712 794 749 777 830 797 808 835 790 778 S35 799 802 797 704 788 768 774 At pin. Do. jot from pin, middle. foot pio. middle. AtT Ifoc AtT Do. Do. Do. Do. Do. Do. Do. Lupin. foot from pin. '^To! Do. Do. Do, At middle. 1 foot from pin. Do. 6 " from pin. At middle. Do. At pin. Do. At middle. Do. 1 foot from pin. At pin. At middle. At pin. Do. Do. 1 foot from pin; At pin. Do. 1 foot from pin. At middle. Do. At pin. At middle. At pin. At middle. At pin. Dp, 1 foot from pin. At middle. 1 foot from pin. Do. At pin. At middle. Do. AtpiD. Do, 1 foot from pin. At pin. At middle. At pin. At middle. - Do. 1 foot from pin. At pin. Do. At middle. At pin. LINEN SHOT LINES. Ko. 7 Shot Lines — Continued. 1145 No. of test. ■Weight of coil. End of ooil tested. Tensile strengtli. rraotured. 3961 3!I63 3963 3961 3965 3966 3967 3968 3969 3970 3971 3972 3973 3974 3975 3976 3977 3978 3979 3980 3981 3982 3983 3984 3985 3991 3994 3995 3996 3997 3&98 3999 4000 4001 4003 4003 4004 4005 4006 4007 4008 4099 4010 4011 4012 4013- 40U 4015 4016 4017 4018 4019 4020 4*21 4022 4023 4024 4025 4026 4027 4028 4029 4030 4031 4032 4033 4034 4035 4036 4037 4038 Powid8. ' 20 20 20 20 9 20 lOi 20 8 20 9i 20 20 4 20 8 19 15i 20 6 20 1 20 14 20 11 20 6 20 124 20 lOi 20 11 20 10 20 Hi 2U 1 20 i 20 2 20 2 20 11 20 10 20 "i 20 20 20 20 20 20 20 20 20 20 20 19 20 20 20- 20 20 20 20 20 20 20 20 20 19 20 20 20 20 20 19 20 20 SO 20 20 19 20 20 20 20 20 20 20 20 20 20 20 20 Owncesi 6J 3 4 3 8 10 14 5i 10 14 5 8 H 9 4 8 1* 4 4 1 13 7 4 I' 14 7 1 ?* 7 14i 5 7 4 64 14 f i 14 14 1 Outside ...do.. .. do.. ...do- .. do .. ...do.. ...do.. ...do.. ...do.. ..do.. ...do-. ...do.. ...do.. ...do-. ...do.. ...do-. ...do.. ...do.. ...do.. Inside . ...do.. ...do.. ...do.. ...do.- -L.do .. ...do.. ...do .. ...do-. ...do., --.do-. ...do.. ...do.. ...do.. ...do.. ...do.. ...do.. ...do.. ...do.. ...do.. ...do.. ...do.. ...do.. ...do.. ...do .. ...do.. ...do.. ...do.. ...do.. ...do.. ...do.. ...do.. ...do.. ...do.. ...do.. ...do.. ...do.. ...do.. ...do.. ..do.. ...do.. ...do-. ...do.. ...do-. ...do . ...do.. ..do.. ...do.. ...do . ...do.. ...do.. ...do-. ...do.. Outside ...do.. ...do.. .. do-. ...do.. ...do.. ...do.. ...do.. founds. 763 762 793 792 794 800 T95 820 720 834 745 835 749 747 789 748 805 798 790 870 830 895 744 838 746 760 791 796 815 784 810 806 718 765 714 742 760 764 793 855 768 810 702 798 805 802 800 705 786 804 806 810 778 812 768 812 .,■ 796 ;- 795 742 815 808 800 830 789 747 812 845 685 740 812 715 722 747 697 702 712 763 699 735 705 At pin. At middle. At pin. At middle. At pin. Do. Do. Do. Do. 1 foot from pin. At middle. Do. At pin. Do. At middle. At pin. At middle. 1 foot from pin. At middle. At pin. _ At middle. Atpin. At middle. At pin. At middle. At pin. 1 foot from pin. Atpin. At middle. At pin. Do. At middle. Do. At pin. Do. At middle. Atpin. 1 foot from pin. At middle. 1 foot from pin. At pin. Do. Do. Do. Do. Do. At middle. Do. At pin. Do. Do. Do. 'Do. At middle. Atpin. 1 foot from pin. At pin, 1 foot from pin. Do. At middle. 1 foot from pin. . At pin. At middle. Do. Do. 1 foot from pin. Do. At pin. Do. Do. Do. 1 foot from pin. At pin. Do. 1146 LINEN SHOT LINES. No. 9 Shot Lines. Diameter of lines, ".28. Lay, one turn in ".9. Three strands of sixteen threads each. No. of test. Weight of coil,. End of coil tested. Tensile strength. Fractured. 3400 3101 3402 3403 3404 3406 3406 3407 3408 3409 3410 3411 3412 3413 3414 3415 3416 3417 3418 3419 3430 3421 3422 3423 3424 3425 3426 3427 3428 3429 343U 3431 3432 3433 3434 3435 3436 3437 3438 3439 3440 3441 3442 3443 3444 3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3458 3460 3461 3462 3463 3464 3465 3466 3467 3468 3469 Pounds. Ounces. 37 • 8 37 8 37 8 37 8 37 4 37 4 37 4 ■ 38 87 4 37 12 37 8 37 4 37 8 36 8 36 8 36 12 37 12 37 37 12 37 8 37 8 37 8 37 12 36 8 36 8 37 37 4 37 4 36 8 37 12 38 37 8 37 8 38 37 8 37 12 37 37 - 37 4 37 12 37 8 36 8 37 12 37 12 37 12 36 4 37 8 37 4 37 4 37 12 37 4 36 8 . 37 8 37 12 38 37 12 37 4 . 37 4 . 37 4 36 12 . 37 . 37 . 37 8 . 37 8 . 37 4 . 38 . 36 12 37 12 38 . 36 12 . 37 4 . 36 12 . Inside .. ....do... ....do .. ....do... ... do... ....do... ....do... ....do... ....do... ....do... ...do... ....do... ...do... ....do... ....do. .. .. do ... ....do ... ...do... ...do... ....do... ....do ... ... do... ...do... ...do... . . do . . . Outside . ...do ... .. do... .. do... ...do... ...do ... ..do. . ... do... ...do... ...do... ...do... ...do... ...do... ... do... .. do... ...do ... ... do ... ...do ... .. do... ...do... ...do... ...do... ...do ... ...do ... ...do... do... ...do... ...do ... ...do ... ...do... .. do... ...do... ...do. .. ...do. .. ...do ... ...do ... ...do... ...do... ...do... ...do..., .do... do... do..., do... do... ...do... do.... Pounds. 1,446 1,195 1,484 1,386 1,246 1,353 1,192 1,535 1,205 1,200 1,250 1,110 1,250 1,145 1,150 1,160 1,130 1,135 1,360 1, 2.?0 1,170 1,280 1,396 1,210 1,090 1,100 1,135 1,056 1, 035 1,210 1,150 1,145 1,175 1,170 1,1:0 1,060 1, 165 1,150 1,065 1, 185 1,130 1,010 1,190 1,250 1,155 1,050 1,090 1,090 1, 120 1,115 1,020 1,275 1,065 1 205 1,225 1, 145 1,140 1,130 1,295 1, 110 1,200 1,130 1, 1.50 1,110 1,015 1,175 ],1H0 1, 225 1,350 1, 095 l,2ii5 1,160 1 foot from pin. Do. At middle. At pin. 1 foot from pin. At pin. Do. Do. Do. Do. Do. Do. 6" from pin. 1 foot from pin. At middle. 'At pin. Do. 2 feet from pin. At pin. Do. At middle. Do. Do. At pin. Do. Do. Do. Do. At middle. 1 foot from pin. At piu. Do. 1 foot from pin. Do. At pin. 6" froni pin. At middle. 1 foot, from piu. At middle. At pin. At middle. 2 feel from pin. At pin. 6" from pin. Atpin. 6'' from pin. Do. At pin. Do. Do. Do. Do. Do. Do. Do. Do. Do. Do. 1 foot from pin, 6" from pin. At pin. 1 foot, from pin. 6" from pin. At pin. 1)0. Do. Do, 1 foot from pin. At pin. Do. Do. 3" from pin. LINEN SHOT LINES. No. 9 Shot Lines— Continued, 1147 No. of teat. Weight of coil. End of coil tested. Xensile strength. Fractured. 3470 3471 3473 3473 3474 3475 3476 3477 3478 3479 3480 Pounds. 37 37 37 37 37 37 36 3G 36 36 36 Ounces. 8 8 12 8 4 12 12 12 8 8 Outeide Founds. 1 130 At pin. Do! Do. 1 foot from pin. Atp™. . Do, Do, Do. 1 foot from pin. At pin. At middle. At pin, bo. Do. Do, Do. 1 foot from pin. At middle. At pin. Do. 6" from pin. At pin. 1 foot from pin, . At middle. At pin. At middle. . 1 foot from pin. At pin. 1 foot from pin. At middle. 1 foot from pin. At pin. At middle. At pin. 1 foot from pin. At pin. 1 foot from pin. At pin, 1 foot from pin. At pin. 1 foot from pin. Do, At^n. m. 1 foot from pin. 6" from pin. At pin. Do, Do. Do, 6" from pin. 1 foot from pin. Do, At middle, y At pin. Do! Do. Do. Do. Do. Do. Do. Do. Do. Do, 1 foot from pin. Do. At pin. 1 foot from pin. At pin. Do, Do, ....do 1 1 \ 1 1 1 1 1 1 1 1 1 1 1 1 "1 1 1 1 1 1 1 1 1 1 J 1 1 1 1 1 1 1 1 1 1 1 1 1 ] ] 1 1 T 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 205 050 200' 126 150 180 130 160 050 980. 310 120 190 206 140 080 170 180 175 990 156 110 220 070 115 230 370 410 276 296 200 275 180 225 195 140 130 290 420 200 350 250 375 165 235 340 305 160 180 110 040 260 140 170 150 060 140 125 980 320 150 152 240 180 195 145 180 150 070 200 145 165 140 090 215 085 266 190 195 175 ... do ... do ...do . . do ...do .. do do ....do ....do 3481 3482 3483 3484 3485 3486 3487 3488 3489 37 37 37 37 37 37 37 37 37 8 8 8 8 8 8 8 ' Outside ,. do do ....do ....do ...do ... do ....do ....do 3490 3491 3403 3493 3404 3495 3486 3^97 3498 3499 3500 3501 3602 3503 3604 3505 3506 3607 3608 3509 3510 3511 3512 3513 3514 3515 3616 3517 3518 3619 3520 3521 3523 3523 3524 3526 3526 3527 37 37 36 37 37 37 37 38 37 36 37 36 36 37 37 36 37 37 3t 37 37 36 37 36 38 36 36 38 38 37 37 36 37 37 36 37 36 36 12 12 8 4 8 8 12 8 4 8 12 4 8 12 8 4 8 12 12 8 12 12 12 4 4 12 12 8 4 12 i Outside ... do ...do ....do ...do ....do .;..d0 ...do ... ...do ....do ...do ...do ....do do ... do ....do ....do do ....do do ....do do .. do . ..." ....do .. do ....do ... do ...do ....do ....do ....do ....do ... do ....do ... do ....do Inside 3528 3629 3530 -3531 3532 3533 3534 '3535 3536 3537 3638 3639 3540 3541 3642 3543 3544 3545 3616 3547 36 36 36 37 36 37 38 38 37 sr 37' 36 ^ 37 3C 37 36 36 36 36 37 12 12 8 4 12 8 12 8 12 8 ' 12 12 12 12 8 . do ... do ....do ' ... do ....do do ....do ....do . do ....do do ....do do do .do ....do do ....do. ...,„.. 1148 LINEN SHOT LINES. No. 9 Shot Lines. Second lot. Diameter of lines, ".29. Lay, one turn in ".95. Three strands of sixteen threads each. No. of test. "Weight of coil. End of coil tested. Tensile strength. Fractured. 4139 4110 4141 4142 4143 4144 4145 4146 4147 4148 4149 41 SO 4151 4152 4153 4154 4155 4166 4157 4153 4159 4160 4161 4162 4163 4164 4165 4166 4167 4168 4169 4170 4171 4172 4173 4174 4175 4176 4177 4178 4179 4180 4181 4182 4183 4184 4185 4186 4187 4188 4189 4190 4101 4192 4193 4194 4195 4196 4197 4198 4199 4200 4201 4202 4203 4204 4205 4206 4207 Powndt. 38 37 38 38 38 38 38 38 37 38 38 38 38 38 38 38 38 39 38 38 38 38 38 38 38 38 33 38 38 38 38 33 38 38 38 38 37 38 38 38 38 38 38 38 38 38 38 37 38 38 38 38 38 Ounces. 4 12 4 8 4 4 4 1 4 8 4 4 4 4 4 12 12 12 8 2 4 4 4 12 8 14 2 4 4 6 4 12 8 10 8 10 10 2 4 8 2 8 14 8 4 Outside - ...do ... ...do ... ...do .. ...do... ...do... ...do... .. do ... ....do... .. do... .. do ... ....do .. do... do... ....do... ....do... do ... ... do ... ...do... ...do ... ...do... ... do... ...do... ....do... ...do ... ....do ... ....do... ... do... ... do ... ....do ... ... do... ...do... ...do... ...,do... ....do... .-..do .. ... do... .-do .. ... do... ... do ... ... do. . ....do... ... do ... ....do... ....do ... ....do... ... do ... ... do... .-.-do--- ----do -.. ... do... .. do ... ...do... ...do ... ....do ... ....do... ... do ... ...do ... ....do... ....do ... .:..do... ...do ... ....do ... ... do ... Inside . . ....do ... ....do... ....do... ....do... ....do... Pounds. 1,230 980 1,182 1,385 1, 295 1,268 1,198 1,210 1,240 1,289 1,397 1,040 1,277 1,360 1,326 1,289 1,232 1,249 1.167 1,375 1,308 1,385 1, :177 1,240 1,247 1,185 1,303 1,305 1,186 1,248 1,255 1,326 1,138 1,110 1,2'?8 1,379 1,344 1,125 1,110 1,255 l,i65 1,S38 1,261 1,275 1,270 1,085 1,190 1,120 1,168 1,172 1,183 1,250. 1,394 1,400 1,205 1, 252 1, 085 1. 1.57 1,258 1,287 1,346 1,172 1,332 1,205 1,210 1, 290 1, 260 1,276 986 1,248 At pin. 1 foot from pin. At pin. Do. Do. 1 foot from pin. At pin. Do. Do. Do. Do. Do. Do. Do. Do. Do. Do. Do. Do. Do. Do. Do. Do. Do. Do. At middle. Do. At pin. At middle. At pin. Do. Do. Do. Do. Do. Do. ' Do. Do. Do. Do. Do. Do. . Do. Do. Do. At middle. Do. At pin. Do.' Do. Do. Do. Do. Do. Do. 1 foot from pin. .At pin. At middle. 1 foot from pin. At pin. Do! Do. Do. Do. Do. Do. Do. Do. LINEN SHOT LINES. No. 9 Shot Lines— Continued. 1149 -No. of test. ■Weight of coil. End of coll tested. Tensile strength. Fractured. 4208 4209 4210 42U 4312 4213 4214 4215 4216 •4217 4218 4219 4220 4221 4222 4223 4224 4225 4226 4227 4228 4229 4230 4231 4232 4233 4234 4235 4236 4237 4238 FounOa. 37 38 38 38 37 38 38 38 38 .38 38 37 37 38 38 38 38 38 37 38 38 38 38 38 37 37 37 33 37 38 38 Otmcei. 14 8 8 12 10 2 2 12 12 14 12 12 2 8 14 2 10 12 10 14 12 14 10 12 6 Founds. 1,274 1,200 1,247 1,045 1,193 1,205 1,170 1,167 -1,060 1,198 1,195 1,177 1,110 1.202 1,288 1,149 1,282 1,184 I7247 1,015 1,070 1,132 980 1,3P4 870 1,215 1,167 1,047 1,174 1,168 1,005 1,125 1,090 At pin. Dp. Do. Do. Do. Do. Do. Do. Do. Do. Do. Do. Do. Do. Do. At middle. At pin. At middle. Atpin. 1)0. 1 foot from pin. At middle. 1 foot from pin. At middle. Atpin. Do! Do. Do. Do. do •--•do — do •-- do — flo — do .. do ....do , .. do ... do ...;do flo ... do .. flo do ....do -..'.... ...do ; do ... do . .do do . do ... do..... do ....do do do ...do .. do do ....do do 1150 COTTON CLOTH. Cotton Cloth. Tensile tests of warp and filling strips furnished by bidders for tar- get cloth. No. of .teat. Name of bidders. Picks. Weight of 1.15 Tensile strength. Warp. Filling. yards, 75" wide. Warp. Filling. 3299 3300 3301 3302 3303 3304 3305 3306 3307 3308 Boston Manufacturing Co. Per inch. 64 80 60 60 66 60 60 64 62 40 Per vncli. 74 30 60 46 46 66 68 52' 48 38 Pounds. 1 1 ' 1 Ounces. 0.03 ■ 1.48 1.77 16.06 1.66 11.70 10.19 12.60 12.59 0:20 Pounds. 123 319 166 189 182 117 93 163 158 138 Pounds. - 156 75 145 92 . 108 122 106 106 72 142 J H.Lane & Co do 1 Rowland A. Bobbins do . .. . ' T. A. Ashbnrner .... ....do 1 MANILLA RQPE. 1151 1 1 1 strand 6" from cleat, 1 strand 2 feet irnih cleat, 1 strand at the cleat. 1 strand 4" from cleat. 2 strands at the middle, 2 strands at the cleat, 1 strand at the cleat. 1 strand at the cleat,' 1 strand at the cleat. 1 St and at the cleat, 1 strand at the cleat. 1 strand at the cleat, 1 strund at the cleat. 1 stiand at the cleat, 1 strand at the cleat. 1 strand at the cleat. 1 strand at the cleat. 1 strand at the cleat. 1 strand at the cleat. 1 Birand at the cleat. - If h1 eooooinooooGtooooo ooooo '5 1 i J unto {OM^i:-«-*coeo-*ot- os ; ; 1 ; : ;iHi-i«(N(M-*ineooo §:::;:: "5: i i ! ; i ■ B Jg O O A 00 ^)H £4 to N eiocgTH knincopcDestoocoac^AifScoin 1 p. $1 . mm in u) tam moo ua eoCimt-ot- ic5 ff4t>co(Mt>in c-mS i--- 1 ■♦"^"■•-sftSssgigKss asssg DO COMCOCOCQWCOWOTCOCOCOCOMCO CQCOMCOCO •3a§ lis .giSi i i ; ; i : : : : : i i i i : : «va>> •■ ,... 555 '- :- :, :- :- ■ '■ J -J ■ 01, at, 00 iJO OQ K 00 00 00 Xi CO 00 QC OC 00 OOOOXODOO ec'cocortrcQ eom COM mm neon ■** n n m n n 1 1152 PRIVATE TESTS. FBIYATE TESTS. Bate. Material. For whom tested. IN'ame. City. State. July Ang. 3 9 12 Sept. Oct. Dec. Adhesion of nails. Cast-iron Pressure gauges Steel ana wrought -iron plates. Bricks Wrought-iron bolt Steel plate Belting — .- ■ Sleel plate and bars ....do. 2 2 3 12 14 21 26 1 18 19 21 22 29 31 1 4 12 15 17 19 26 2Iass. M.IHS. R.L Mass. Mass. N.Y. Mass. Mass. Pa. Mass. Mass. Mass. Mass. Mass. Mass. Pa, Mans. N.J. Mass. Mass. Mans. N.Y. Mass. Mass. Pa., Mass. Pa. . Mass. M.iijs. Me. Mass. Conn. Minn. Mass. Conn. Mass. N.Y. Conn. Mass. Vt. Pa. Mass. Mass. Ohio.' Mass. Mass. N.Y. Mass. N.Y. PRIVATE TESTS. PRIVATE TESTS— Co-aim-aea. 1153 Bate. Material. For whom tested. Name. City. State. 1889. Dec. 18 1890. Jau. 2 17 Feb. 26 Kar. 3 4 Cast steel Steel plate CflSt steel Perforated plates. Steel bars Chain cable.. Brioka SandstODe. . Marble...., Bricks ...., Bronze Plate iron Steel and iron castings. Copper bars Bronze Wrought-iron. rods . Bail joints Steel bars Granite . Swivels . "Wronght-iron rods. Steel bars :. "Wrought-iron b^-r. . Marble - Bronze .-..do , Chain cable. Iron . Steel T)late Marble , Bricks , Steel plate Paper , Oolitic limestone. . Stone , Bricks Bronze , Zinc buttons , Steel plate Wronght-iron...... Copper wire , Welded brass and iron Iiipes. Bricks .. do Stones Swivel , Steel hangers. Steel plate., Bricks Bricks Marble Steel plate.. Steel plate,. Battons Cement cube . Cast iron Bronze Chain cable... Carbonized stone . Face bricks T.P.Morris Co Stone, Carpenter & "Willson American Steel Car Wheel Co. Pratt & Whitney Co Standard Steel Co Baker Chain and Wa^on Iron Mannfactaring Co. Korcross Brothers ...do ...do ...do../. Alnminnm Brass and Bronze Go. Gr. W. & F. Smith Iron Co . . Golding &Co C.H..Gay Aluminum Brass and Bronze Co. Fi of. Or. Lanza McConway Torley Co American Steel Car Wheel Co. Bock Hill Granite Co Baker Chain and Wagon Iron Manufacturing Co. Prof. G. Lanza Standard Steel Co , Boston Bridge Works H.W.Ball Cowles, E. S. & AL Co Alnniinum Brass and Bronze Co. Baker Chain and Wagon Iron Manufacturing Co. Mitls Wrought-Iron Cast- ing Co. C. C. Loring Sheldon Marble Co Fiske, Coleman & Go Nashua Iron and Steel Co.. PhilipR and Kunhflrdt Franz R. Caden & Co WlW.Hazlett Norcroas Brothers Cowles, E. S. & Al. Co A, J, Tower , New Tork and New Eng- land Kailroad. Boston Bridge Works . A. A. Brooks Thomson Electric Welding Frank B. Gilbreth Fiake Coleman & Co M. A. Sweeney & Bro Baker Chain and Wagon Iron Manufacturing Co. Northern Pacific Kailroad Co. E.D.Leavitt C. H. Barbour, agt Somerset Potters' Works. - W. K. Sheldon Geo. H.Lloyd Hartford steam Boiler In- spection and Insurance A. J. Tower H.G.Burch G. W. & F. Smith Iron Co. . CowleaE.S. &A1. Co Baker Chain and Wagon Iron Manufacturing Co. H.O.Bnrch St. Joseph Pressed Brick Co. Philadelphia.. Providence . . . Boston Hartford . Boston Allegheny . Boston ...... ...do ... do , ...do Bridgeport. Boston ...do ... do Bridgeport . Boston New York., Boston Bethlehem . . Allegheny . . Boston ...do ...do ... do Lock port .. Bridgeport. , Allegheny . Neponset . . Boston West Rutland . Boston .. do Lawrence Evansville Walker's Mills. Boston Lockport Roxbury Norwood Boston.. ...do... .;.do.-, ...do ...do Jefferson ville. Allegheuy St. Paul Gambridgeport . St. Paul Somerset West Rutland.. Boston ...do Koxbury , New London.. Boston Lockport Allegneny New London. St. Joseph . . . Pa. R.L Mass. Conn. Mass. Pa. Mass. Mass. Mass. Conn. Mass. Conn. Mass. N.T. Mass. Pa. Pa. Mass. Mass. Mass. Mass. -N.T. Conn. Pa. Mass. Mass. Vt. M ass. Mass, Mass. Ind. Pa. Masi N.T. Mass. Mass. Mass, Mass. Mass. Mass. Mass. Ind. Pa. Minn. Mass. Minn. Mass. Vt. Mass. Conn. MaHS. N.T. Pa. Conn. Mo. H. Ex. 165 73 1154 PEIVATE TESTS. PRIVATE rfiSTS— Continued. Date. Material. For whom tegted. Name. City. State. April 2 11 25 May 3 5 29 June 6 Stones . BroDze "Wrought iron . Steel ^late Cast iron Steel hangerH.. Biveted joint . . SteeL plate Chain cable.... Steel wire.... Copper wire . Granite Marble Bluestone Steel plate... Copper wire . Steel plates — Steel castings. Wire chain Steel rails Chain cable Chain iron Riveted joints - Steel plate Stetjl plate — - Steel plate Copper wire... Bricks ... Steel bars. "Wrought iron . G-ranite , Steel plates Steel bar , Wrought-iron bars- Granite Wrought-iron bars. Cast-iron . . . Chain oable. Wrought-iron bar . Steel-wire rope . Steel bars Sandstone Eye-bar Rail joint ., Steel plate., Bronze Steel plate. do Chattanooga Marble and Stone Co. Cowles E. S. & AI. Co Boston Bridge Works Chas. C. Loring Golding &Co KoTthern Pacific Kailroad Co. I. P.Morris Co ....do Baker Chain and Waoron- Iron Manufacturing Co. Chas. W. Bassett Prof. W. L. Hooper Tale and Towne Manu- facturing Co. S.M.]rolsom "Warsaw Bhietsone Co Chas. C. Loring American Circular Loom Co. Geo. H. Lloyd Aineiican Steel Car Wheel Co. Bridgeport Chain Co P.H.Dudley Jas. H. Baker ..do LP. Morris Co ...do Chas. C. Loring Geo. H. Floyd American Circular Loom Oo. Boston Terra Cotta Co Thomson-Houston Electric Co. Baker Chain and Wagon- Iron Manufacturing Co. John H. Rice Geo. H.Lloyd Boston Bridge Works Prof, G. Lanza Norcross Brothers Thomson Electric Welding Co. Nashua Iron and Brass Foundry Co. Baker Chain and Wagon- Iron Manufacturing Co. P, Hay den Saddlery H aid- ware Oo. E. D. Leavitt Carnegie, PhiptJs & Co . . The Detroit and Hocking Valley Red and Brown Stone Co. Lehigh Valley Railroad Co Standard Railway Rail- joint Co. F. A. Houdlette & Co Cowles E. S. and Al. Co Chas. C. Loring Wm. Allen & Sons Chattanooga . Lookport . Boston ...do ...do. ... St. Paul... Philadelphia.. ...do , Allegheny Newton , College Hill. Stamford . . . Albuquerque - Warsaw Boston ...do ...do. ...do. Bridgeport ... New York — Allegheny — ...do Philadelphia.. ...do .' Boston ...do ...do ...do Lynn AHegheny . New York. Bopton ...do...... ...do ...do Lynn Nashua Allegheny . Columbus . Cambridgeport . Munhall Detroit Mauch Chunk . Boston ....do...... Lockport - . Boston Worcester . Tenn. N.Y. Mass. Mass. Mass. Minn. Pa. Pa. Pa. Mass. Mass. Conn. N.Mex. N.Y. Ma«s. Mass. Mass. Conn. N.T. Pa. Pa. Pa. Pa. Ma^s. Mass. Pa. N.T. Mass. Mass. Mass. Mass. Mass. N.H. Pa. Ohio. Mass. Pa. Mich. Pa. Mass. Mass. N.T. Mass. Mass. INDEX. Page. Alternate straining of steel, wrought iron, and cast-iron 685 Cast (gan) iron ' 700 Steel bars: Marks, SBi, L3M, Ni, after annealing 687 Ni9i R, first specimen, after annealing 690 Ni9i E, second specimen, before and after annealing 692 SB3, LiM, after annealing 695 Wronght iron 698 Aluminum, and aluminum brass and bronze 667 Alnmimim 669 Aluminum brass 675 Aluminum bronze 672 Tabulation , 678 Axles, railroad. (See Railroad material.) Belleville springs , 741 Bluestone, North River. {See Stones and building material.) Brake-beam 801 Brass, aluminum 3 per cent 675 Bricks. {See Stones and building material. ) Bronze : Aluminum, 10 per cent 672 Fractured tray hinge 679 Building block. {See Stones and building material.) Cast-iron : Pig-irons 739 T^atertown Arsenal 737 With aluminum flux 738 Watervliet Arsenal 739 Chain cable 862 Cordage: Manilla rope : 1151 Shot lines, linen 1135 No. 4 line.... 1137 No. 7 line 1141,1144 Elongation under stress 1143 Different parts of coil 1142 Waterproofed 1143 No. 9 line 1146 Cotton cloth 1150 Endurance of rotating shafts 863 Description 865 Cast (gun) iron ; No. 4 1048 1155 1156 INDEX. Page. Endurance of rotating shafts — Continued. 0. H. steel bars: No.l 866,874,876,878,882,884 No. a 891,893,896,900,906 No. 3 911,914,920.925,9:31 No. 4 936.938,939,940 No. 5 941,943,945,946 No. 6 947,949,950 No. 7 951,953 No. 15 9.53 No. 21 956 Wrought-iron bars: No.l 958,964,967,974 No. 2 980,982,984,988,989 No. 3 990,997,999,1000,1002 No. 4 1004,1006,1012,1018,1023 No. 5 1028,1029,1030,1032,10,34 No. 6 ■ 10^5,1036,1037,1039,1040 No. 6a 1041 No. 7 .: 1042 No. 8 1042 No. 9 1044.1046,1047 Summarized tabulation 1050 Tension tests of ruptured endurance sbafts : O.H. steel 1057 Wrought iron 1072 Tabulation , 1095 Expansion, coefficient of, stones and bricks 1099, 1 108 Eyebar' (steel), specimens from overstrained stem 719 Tabulation 731 Granite. (See Stones and building material.) Gun specimens: 3.2-incb steel B. L. rifles 13 Gas check 42 No. 12 45 No. 51 46 No. 70 48 Jackets, specific gravity and hanlMess 49 Tube No. 54 15 No. 55 16 No. 56 17 No. 57 24 No. 60 26 No. 64 28 No. 66 32 No. 68 34 No. 69 35 No. 70 36 No. 71 40 No. 73 41 Specific gravity and hardness 49' Tabulation 49 3.6-inoh steel B. L. rifle No. 1. Key-ring 50 8-inch steel B. L. Rifles ,51 Jacket No. 3 54 INDEX. 1157 Page. GuD specimens — Continued. 8-inch steel B. L. Rifles — Continued, Jacket No. 4 56 No. 6 57 Specific gravity and hardness 59 Tube No. 3 53 No. 4 55 10-inoh wire-wound rifle. Woodbridge Straining of cold rolled staves.. 858 10-inch wire- wound rifle i 61 HoopCa. 94 C* 96 Ct 99 Ce - 102 Jacket 82 Ring A 91 Tube 63 Tabulation 105 12-inch steel B. L. rifle No. 1 107 Breech bushing 166 Gas check 164 Hoop Ai 147 A3 149 As - 150 Ab 151 B2 152 B5 153 Bs - 154 C3 155 Ci : 156 Ce 157 Cs - 158 C9 159 Ds 161 D4 - 162 Specific gravity and hardness ;. 163 Jacket 130 Trunnion hoop 163 Tube 109 Tabulation -. 167 12-inch B. L. rifled mortars 171 . Mortar No. 1 : Body (condemned) 173 Trunnion hoop 367 Mortar No. 2 : Body 181 Gas check 375 Hoop At 369 B3 - 372 Be 374 Trunnion hoop.-.i 368 Mortar No. 3 : Body 187 Hoop A4 378 As-L , 379 1158 INDEX. Page. Gun specimens — Continued. 13-inch B. L. rifled mortars — Continued. Mortar No. 3 — Continued. HoopB, 380 B3 .■ 3cil Trunnion hoop 377 Mortar No. 4 Body 193 Gas cheoii 387 Hoop A3 382 ^.^ 383 B4 384 Bfi 385 Trunnion hoop 386 Mortar No. 5 : Body 199 Hoop A4 389 Ae 390 B5., i 391 Trunnion hoop 392 Mortar No. 6: Body 205 Gas check .S95 Hoop A4 ., 393 Bi 394 Mortar No. 7 : Body 210 Hoop As 397 B3 398 Mortar No. 8: Body 213 Hoop Bi 399 Be 400 Mortar No. 9 : Body 216 Hoop A4 403 Aa 404 Bi 405 Mortar No. 10 : Body 220 Hoop A3 406 Ae 407 Bi 408 Mortar No. 11: Body 224 Hoop A4 409 Bs 410 Mortar No. 12 : Body 232 Quadrants from disks, compression of 755 Hoop A4 411 Bi 412 Mortar No. 13 : Body 240 Hoop A3 413 Bi 414 INUEX. 1159 Paga Gun specimens — Continued. ' 12- inch B. L. rifled mortars — Continued. Mortar No. 14 ; Body 247 Hoop A4 415 Be 416 Mortar No. 15 : Hoop A3 417 B, 418 Mortar No. 16: Body 254 Hoop Ai 419 Bi 420 Mortar No. 17 : Body 261 Hoop A4 4H Bi .- 422 Mortar No. 18: Body 268 HoopB, 423 Mortar bodies : No. 19 275 No. 20 282 No. 21 288 No. 22 , 294 No. 23 300 No. 24 306 Quadrants from disks, compression of 755 No. 25 312 No. 26 319 No. 27 325 No. 28 331 No. 29 337 No. 30 343 No. 31 349 Specific gravity and hardness : Bodies 424 Hoops 425 Tabulation : Bodies 355 Hoops and gas checks 426 Initial strains in 8-inoh tube and jacket, and hoop A, for 12-inch steel B. L. rifle. 733 8-inch steel B. L. rifle : Jacket 735 Tube 736 12-inch steel B. L. rifle : Hoop A 736 Limestone. {See Stones and bnilding material.) Marble. {See Stones and building material.) Pig-irons 739 Private tests 1152 Pyrotechnic mortar body 861 Quadrants from disks of 12-inch mortar bodies 753 Bailroad material: Axles, muck-bar tender 757 Description..... 759 1160 INDEX, Bailioad material — Continued. Page. Axles, muck-bar tender — Continued. No. 7 760 No.8 769 No. 9 778 Tabulation 787 Brake beam 801 Steel rails .'. 789 Hardness 800 Transverse testa 792 Rope, manila 1151 Rubber buffers 748 Sandstone. (iSee Stones and building material.) Shot lines for U. S. Life-Saving SerTice. {See Cordage.) Slate. {See Stones and building material.) Springs, Belleville j 741 Staves for Woodbridge lO-inoh rifle 858 Steel bars : Fixtures for' hydrostatic test of 8-inch tube 839 For comparison of testing machines ^ 811,815,833 Tabulation 831 .From L. Gathman 849 From National Armory 857 From Ordnance Office i 807 5-inch siege-carriage metal 802 Steel plate, 7-inch siege-carriage metal 806 Steel rails. (See Railroad material.) Stones and building material 1097 Coefficients of expansion : Bluestone, North River 1103 Bricks : Ashler 1107 Fire 1106,1107 Bed 1105, 110() Building block, hollow, fireproof 1107 Granite : Cape Ann '. 1105 Quiucy 1104 Worcester 1104 Limestone : Indiana 1100 Indiana, hoosier buff Oolitic 1099 Marble : Lee, Mass 1101 Vermont 1100 Sandstone: Ohio 1102 Portland red 1102 Potomac red 1101 Slate, Mouson, Maine 1103 Tabulation 1108 Compression tests and moduli of elasticity : Bluestone, North River '. 1123 Granite: Cape Ann ., 1130 Q'lincy H28 Worcester H-^B INDEX. 1161 Page. Stones and building material— Continued. Compression tests and moduli of elasticity — Continned. Limestone : Indiana 1110 Indiana, hoosier buff Oolitic 1109 Marble : Lee, Mass 1113 Vermont : 1111 Sandstone : Ohio 1120 Portland red 1119 Potomac red 1116 Slate, Mouson, Maine 1122 Tabulation 1134 Transv erse tests : Bluestone, North River 1125 Granite : Cape Ann 1133 Quincy 1129 Worcester 1127 Marble : Lee, Mass.l 1115 Vermont 1112 Sandstone, Potomac red 1118 Tabulation 1134 Tape, brass and steel ribbon 681 Wire, steel, round, square, and flat 429 0.10 inch square — Eound rods before drawing . , 431 After second drawing 441 After third drawing, first hole 447 After third drawing, second hole 457 Finished wire — , Not tinned 457,589,600,652 Tinned 467,583,647,655 Tabulation 578,598,635,650,664 Electrically annealed 665 Electrically welded 599,638,650 0.15 inch square — Not tinned 612 Tinned 595,628,644 Tabulation 589,635,650 Electrically annealed 665 Electrically welded 599,650,665 Plat- Not tinned .592,606,615,658 Tinned 586,618,640,661 Tabulation 598,635,650,664 Electrically welded 639,650 Wrought iron : 5-inoh siege-carriage metal 805 Pyrotechnic mortar body 861 JOHN H. mM. JOHN H. kiA^iiii