101
CARRIER RINGS, 6-POUNDER GUNS. No. 7319.
Marks,8 *g®
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.	
5,000	.00015	.00015	0.	0.	
10,000	.00030	.00015			
20,000	.00065	.00035			
30,000	.00100	.00035			
40,000	.00140	.00040			
50,000	.00180	.00040			
51,000	.00185	.00005			
52,000	.00195	.00010			Elastic limit.
53,000	.00280	.00105			
54,000	.00315	.00035			
55,000	.00360	.00045			
56,000	.00400	.00040			
57,000	. 00450	.00050			
58,000	.00500	.00050			
113,500					Tensile strength.
General summary.
Tensile strength, per square inch of original section........................pounds.. 113 500
Elastic limit, per square inch of original section...............................do... 52000 ׳
Elongation per inch after rupture............................................... .inch*. 1	.1350
Elongation per inch under strain at elastic limit............................*’. .do. ” . 00195
Reduction in diameter at point of rupture...................................... .. .do.*I * .065
Reduction in area after rupture, per cent of original section.......... .............. 23 9
Position of rupture.. ....................................................... i02.״ from neck
Character of broken surface........................fine granular, 85 per cent: silky, 15 per cent
Elongation of inch sections......................................................12.״ ,*15.״