105
PIVOT SOCKETS--15-POUNDER GUN MOUNTS.
No. 7224.
Marks, 2pg16 Diameter, ".505.
Sectional area, .20 square inch. Gauged length, 2".
Successive elongation per inch.	Permanent set.	Successive permanent set.	Remarks.
Inch. 0. .00010 .00015 .00035 .00030 .00010 .00070 .00045 .00070 .00075 .00080 .00065	Inch. 0. 0.	Inch. 0. 0.	Initial load. Elastic limit. Tensile strength.
			
			
			
			
			
			
			
				
				
			
	1		
Elongation per inch.
Inch.
0.
.00010 .00025 . 00060 . 00090 . 00100 . 00170 .00215 .00285 . 00360 .00440 .00505
Applied loads per 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 73,500
General summary.
......................pounds..	73,500
.........................do...	27,000
.........................inch..	.1950
..........................do...	.00100
..........................do...	.055
............................... 20.5
..................... 1".10 from neck
granular 85 per cent, silky 15 per cent ........................... ".20*, ".19
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. 7225.
Marks, apsis 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.	Inch.	Inch.	Inch.	Inch.	
1,000	0.	0.	0.	0.	Initial load.
5,000	.00015	.00015	0.	0.	
10,000	.00035	.00020			
20,000	.00065	.00030			
25,000	.00085	. 00020			
27,000	. 00095	.00010			
28,000	. 00100	.00005			
29,000	. 00515	.00415			
30,000	. 00575	.00060			
31,000	. 00665	.00090			
32,000	.00745	.00080			
33,000	.00830	.00085			
72,500					Tensile strength.
General summary.
.....................pounds.. 72,500
.........................do... 28,000
........................inch.. .2250
.........................do... .00100
.........................do...	.065
.............................. 23.9
...................... 1". from neck
granular 60 per cent, silky 40 per cent
*24." ,21.״ .........................
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.............................