NICKEL STEEL.
396
No. 7294.
Marks, 3" round nickel steel. Carbon Steel Company. Diameter, ".500.
Sectional area, .196 square inch.
Gauged length, 2".
Initial load.
Elastic limit.
Tensile strength.
Permanent set.	Successive permanent set.
Inch. 0. 0.	Inch. 0. 0.
	
0.	0.
	
	
	
	
	
	
	
	
Successive elongation per inch.
Inch.
0.
.00010 .00025 .00025 .00040 .00035 .00020 .01195 . 00085 .00060 . 00105 .00100
Elongation per inch.
Inch.
0.
.00010 . 00035 . 00060 .00100 .00135 .00155 .01350 .01435 .01495 .01600 .01700
Applied loads per square inch.
Pounds. 1,000 5,000 10,000 20,000
30.000
40.000
48.000
49.000
50.000
51.000
52.000
53.000 79,640
.pounds.. 79,C40
____do... 48,000
...inch.. .2500 ....do... .00155
....do...	.150
......... 50.9
.. ".8 from neck
...... fine silky
..... ".15, ".35*
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............................