406 STEEL РОВ STANDARDIZING TESTING MACHINES.
No. 7377.
Marks, s8s 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 80,000 40.000 50.000 60.000 70.000 71.000 72.000 73.000 74.000 76.000 80.000 84,000 88,100	Inch. 0. .00010 .00035 .00065 .00100 .00145 .00175 .00210 .00250 . 00280 .00300 . 00320 .00365 .00465 .00875 . 02100	Inch. 0. .00010	Inch. 0. 0.	Inch. 0. 0.	Initial load.
					
					
					
		.00030			
		.00035			
					Elastic limit.
		.00030			
					
					
		.00045			
		.00100			
					
		.01225			
					Tensile strength.
					
......pounds.. 88,100
.........do... 70,000
........inch.. .1700
..........do... .00250
..........do...	.155
............... 51.9
.......".8 from neck
fine silky, cup shaped
*27.״ ,07.״ ..........
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............................
Tension Test of Steel Plate foe U. S. Quartermaster. Washington Barracks, D. C.
No of test.	Sectional area.	Elastic limit per square inch.	Tensile strength per square inch.	Elongation in 2 ipches.	Contraction of area.	Appearance of fracture.	Elongation of inch sections.
10263	Sq. inch. .182	Pounds. a 45,100	Pounds. 66,500	Per cent. 33.0	Per cent. 56.6	Silky		*42.״ ,24.״
Approximate.