♦
109
SOCKETS--15-POUNBEB GUN MOUNTS.
PIVOT
7274.
No.
20 square inch.
.״2
Marks, p^if Diameter ".505. Sectional area, . Gauged length,
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 19.000 20.000 21,000 22,000 23.000 24.000 58,550	Inch. 0. .00010 .00035 .00065 .00115 .00165 .00230 . 00340 . 00450	Inch. 0. .00010 .00025 .00030 .00050 .00050 .00065 .00110 . 00110	Inch. 0. 0.	Inch. 0. 0.	Initial load. Elastic limit. Tensile strength.
					
					
					
					
					
					
					
					
General summary.
........................pounds.. 58,550
............................do...	19,000
............................inch..	.1550
............................do...	.00065
............................do...	.045
................................. 16.9
.......................... ".7 from neck
medium coarse granular, brilliant facets
*17.״,14.״	............................
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. 7236.
Marks, PS5¿
Diameter, ".505.
Sectional area, .20 square inch. Gauged length, 2".
Elastic limit.
Tensile strength.
Permanent set.	Successive permanent set.
Inch. 0. 0.	Inch. 0. 0.
	
	
	
	
	
	
	
	
	
	
	
	
Successive elongation per inch.
Inch.
0.
.00010 .00020 . 00035 .00015 .00015 .00005 .00005 .00320 . 00325 .00075 . 00075 .00100
Elongation per inch.
Inch.
0.
.00010 .00030 . 00065 .00080 .00095 .00100 .00105 •00425 . 00750 .00825 .00900 .01000
Applied loads per square inch.
Pounds. 1,000 5,000 10,000 20,000
25.000
28.000
29.000
30.000
31.000
32.000
33.000
34.000
35.000 70,950
General■ summary.
......................pounds..	70,950
.........................do...	30,000
.......................inch..	.1600
........................do .. .00105
.........................do...	.045
.............................. 16.9
..................... ".30 from neck
granular, silky spot at circumference ..........................".15. ".17*
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.............................