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110	PIVOT SOCKETS--15-POUNDER GUN MOUNTS.
No. 7331.
at 1 A158
Marks, ps 15 Diameter, ".505.
Sectional area, .20 square inch. Gauged length, 2".
Remarks.
Initial load.
Elastic limit.
Tensile strength.
Permanent set.	Successive permanent set.
Inch. 0. 0.	Inch. 0. 0.
	
	
	
	
	
	
	
	
	
	
	
Successive elongation per inch.
Inch.
0.
.00010 .00020 .00035 .00040 .00005 .00005 .00485 .00100 .00075 .00115 .00060
Applied loads per square inch.	Elongation per inch.
Pounds.	Inch.
1,000	0.
5,000	.00010
10,000	.00030
20,000	.00065
30,000	.00105
32,000	.00110
33,000	.00115
34,000	.00600
35,000	.00700
36,000	.00775
37,000	.00890
38,000	־ 00950.
76,900	
...............pounds..	76,900
......................do...	33,000
..................inch..	.1500
...........do...	.00115
..........do...	.045
.7.7.7.׳..................... i6.9
.....................".40 from neck
granular 80 per cent, silky 20 per cent ............:.............. ".13, ".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. 7336.
7V/T 1 A 159
Marks, p s 15
Remarks.
Initial load. Elastic limit.
Tensile strength.
Permanent set.	Successive permanent set.
Inch. 0. 0.	Inch. 0. 0.
	
	
	
	
	
	
	
	
	
	
	
	
	
	
Diameter, ".505.
Sectional area, .20 square inch. Gauged length, 2".
Applied loads per square inch.	Elongation per inch.	Successive elongation per inch.
Pounds.	Inch.	Inch.
1,000	0.	0.
5,000	.00015	.00015
10,000	.00030	.00015
19,000	.00070	.00040
20,000	.00085	.00015
21,000	.00100	.00015
22,000	.00110	.00010
23,000	.00150	.00040
24,000	.00225	.00075
25,000	.00335	.00110
26,000	.00460	.00125
27,000	.00550	. 00090
28,000	.00640	.00090
29,000	.00735	.00095
30,000	.00860	.00125
			
.......pounds.. 60,900
...........do... 19,000
..........inch.. .1050
...........do... .00070
.....do...	.035
................ 13.2
........".50 from neck
granular, silvery luster
10." ,*11.״...........7
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.