INNER BASES---15-POUNDER GUN MOUNTS.
160
No. 7345.
Marks, ib 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 elongation per inch. per6inch.
Inch.
0.
.00010 .00025 .00035 .00030 .00050 .00020 .00030 . 00405 .00090 .00080
Inch.
0.
.00010 .00035 . 00070 .00100 .00150 .00170 .00200 . 00605 . 00695 .00775
Applied loads per square inch.
Pounds. 1,000 5,000 10,000 20,000
30.000
39.000
40.000
41.000
42.000
43.000
44.000 94,400
.pounds.. 94,400
....do... 39,000
___inch.. .1900
.....do... .00150
.....do...	.065
.......... 23.9
.. ".95 from neck at circumference
*21.״ ,17.״.......
granular, silky spot
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.