137
PIVOT YOKES--15-POUNDER GUN MOUNTS.
No. 7326.
Marks, sPY9215־
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 25.000 26.000 27, 000 28,000 29.000 30.000 31.000 32.000 74,950	Inch. 0. .00010 .00025 .00060 .00090 .00095 .00135 . 00175 .00300 .00410 .00495 .00565	Inch. 0. .00010 .00015 .00035 .00030 . 00005 .00040 . 00040 .00125 .00110 .00085 .00070	Inch. 0. 0.	Inch. 0. 0.	Initial load. Elastic limit. Tensile strength.
					
					
					
					
					
					
					
					
					
					
					
..............-......pounds.. 74,950
..........................do...	26,000
........................inch..	.0950
.........................do...	.00095
.........................do...	.025
............................... 9.5
...................... ".46 from neck
granular 85 per cent״, silky 15 per cent ........................... ".09, ".10*
General summary.
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............................
No. 7327.
Marks, IY9215־
Diameter, ".505.
Sectional area, .20 square inch. Gauged length, 2".
Initial load.
Elastic limit.
Tensile strength.
Elongation per inch.	Successive elongation per inch.	Permanent set.	Successive permanent set.
Inch. 0. . 00010 . 00030 . 00060 . 00085 .00095 .00100 .00175 .00460 .00530 .00610 .00735	Inch. 0. .00010 .00020 .00030 .00025 .00010 . 00005 .00075 . 00285 . 00070 .00080 .00125	Inch. 0. 0.	Inch. 0. 0.
			
			
			
			
			
			
			
			
			
			
			
Applied loads per square inch.
Pounds. 1,000 5,000 10,000 20,000
25.000
27.000
28.000
29.000
30.000
31.000
32.000
33.000 75,400
......................pounds..	75,400
.........................do...	28,000
........................inch..	.1000
..........................do..	.00100
..........................do..	.025
.............................. 9.5
.................... 1".08 from neck
granular, silky spot at circumference .......................... ".10*, ".10
General summary.
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..............................