PIVOT SOCKETS--15-POUNDER GUN MOUNTS.
112
No. 7339.
square inch.
Marks, ps6i5 Diameter, ".505. Sectional area, .20 Gauged length, 2".
Permanent set.	Successive permanent set.
Inch. 0. 0.	Inch. 0. 0.
	
	
	
	
	
	
	
	
	
	
	
	
	
Applied loads per square inch.	Elongation per inch.
Pounds.	Inch.
1,000	0.
5,000	.00010
10,000	.00030
20,000	.00070
21,000	.00080
22,000	.00085
23,000	.00095
24,000	.00140
25,000	.00175
26,000	. 00250
27,000	.00340
28,000	. 00460
29,000	.00510
30,000	.00640
66,500	
Remarks.
Initial load.
Elastic limit.
Tensile strength.
Successive elongation per inch.
Inch.
0.
.00010 .00020 .00040 .00010 .00005 . 00010 . 00045 .00035 .00075 .00090 .00120 .00050 .00130
......................pounds..	66,500
........................ do...	23,000
........................inch..	.1750
.........................do...	.00095
.........................do...	.055
............................... 20.5
..................i... ".90 from neck
granular, silky spot at circumference ........................... ".18*, ".17
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. 734:6.
Marks, 2psi5 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 29.000 30.000 31.000 32.000 33.000 34.000 61,850	Inch. 0. . 00010 .00030 .00065 .00100 .00150 . 01250 .01355 .01500 .01650	Inch. 0. .00010 . 00020 . 00035 .00035 .00050 .01100 . 00105 .00145 . 00150	Inch. 0. 0.	Inch. 0. 0.	Initial load. Elastic limit. Tensile strength.
					
					
					
					
					
					
					
					
					
....*...pounds.. 61,850
..........do... 29,000
.........inch.. .2100
..........do... .00100
..........do...	.075
............... 27.4
...... ".50 from neck
dull gray, amorphous
*25.״ ,17.״ ..........
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.........*..................