OUTER BASES---]5-POUNDER GUN MOUNTS,
178
No. 7328.
Marks, ob 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 .00015 .00030 .00040 .00015 .00010 .00005 .00740 . 00065 . 00080 .00090 .00080
Elongation per inch.
Inch.
0.
.00010 .00025 .00055 .00095 .00110 .00120 .00125 .00865 .00930 .01010 .01100 .01180
Applied loads per square inch.
Pounds. 1,000 5,000 10,000 20,000
30.000
35.000
37.000
38.000
39.000
40.000
41.000
42.000
43.000 81,500
......................pounds..	81,500
.........................do...	38,000
........................inch..	.1650
.........................do...	.00125
.........................do...	.045
............................. 16.9
..................... ".82 from neck
granular, silky spot at circumference ......................... ".16*, ".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. 7329.
Marks, o b is Diameter, ".505.
Sectional area, .20 square inch. Gauged length, 2".
Remarks.
Successive
permanent
set.
Permanent
set.
Successive elongation per inch.
Applied
loads per Elongation square per inch, inch.
Initial load.
Elastic limit.
Tensile strength.
Inch.
0.
.00010 .00015 .00035 .00035 .00020 .00005 .00005 . 00845 . 00050 .00085
Inch.
0.
.00010 . 00025 .00060 .00095 .Ó0115 .00120 .00125 .00970 . 01020 .01105
.01175	.00070
01260	.00085
Pounds.
1,000
5,000
10,000
20,000
30.000
35.000
36.000
37.000
38.000
39.000
40.000
41.000
42.000 77,450
......................pounds..	77,450
.......................do...	37,000
..................inch..	.1750
.........................do...	.00125
.........................do...	.045
............................... 16.9
...................... ".98 from neck
granular 80 per cent, silky 20 per cent ........................... ".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............................