PIVOT YOKES-----15־POinSTDER GUN MOUNTS,
134
No. 7350
Marks, p Y&i5 Diameter, ".505.
Sectional area, .20 square inch. Gauged length, 2".
Applied loads per square inch.	Elongation per inch.	Successive elongation per inch.	Permanent set.	Successive permanent set.	Remarks.
Pounds. 1,000 5,000 10,000 20,000 28,000 29.000 30.000 31.000 32.000 33.000 70,900	Inch. 0. .00010 .00030 .00060 . 00095 .00120 .00250 . 00375 .00445 .00500	Inch. 0. .00010 . 00020 .00030 .00035 .00025 .00130 .00125 .00070 . 00055	Inch. 0. 0.	Inch. 0. o.	Initial load. Elastic limit. Tensile strength.
					
					
					
					
					
					
					
					
					
General summary.
Tensile strength per square inch of original section......................pounds
Elastic limit per square inch of original section...............................-do.
Elongation per inch after rupture...............................................inch
Elongation per inch under strain at elastic limit...............................do.
Reduction in diameter at point of rupture.......................................<lo.
Reduction in area after rupture, per cent of original section......................... ¿v.o
Position of rupture................................. -........: -.........• v / •9° fro™■ neck
Character of broken surface............medium, fine, granular; dull silky spot at circumference
Elongation of inch sections........................................................ ".20*, ".15
70,900 28,000 . 1750 .00095 .055 20.5
No. 7360.
Marks, !?3ib Diameter, ".505.
Sectional area, .20 square inch. Gauged length, 2".
Applied loads per square inch.	Elongation per inch.	Successive elongation per inch.	Permanent set.	Successive permanent set.	Remarks.
Pounds. 1,000 5,000 10,000 20,000 30.000 34.000 35.000 36.000 37.000 38.000 39.000 73,800.	Inch. 0. .00010 . 00030 .00060 . 00105 . 00125 .00625 .00810 .00900 . 00975 .01035	Inch. 0. .00010 . 00020 .00030 .00045 .00020 .00500 . 00185 . 00090 .00075 .00060	Inch. 0. 0.	Inch. 0. 0.	Initial load. Elastic limit. Tensile strength.
					
					
					
					
					
					
					
					
					
					
General summary.
.....................pounds.. 73,800
.........................do... 34,000
........................inch.. .0950
.........................do... .00125
.........................do...	.035
.............................. 13.2
.......................7.״ from neck
granular, silky spot at circumference
*11.״ ,08.״..........................
Tensile strength per square inch of original section....
Elastic limit per square inch of original section.......
Elongation per inch after rupture.......................
Elongation per inch under strain at elastic limit.......
Reduction in diameter at point of rupture...............
Reduction in area after rupture, per cent of original section.
Position of rupture.....................................
Character of broken surface.............................
Elongation of inch sections.............................