PROPERTIES AND USES OF NICKEL STEEL. 697 
Table IV. : 
Determination of elastic limit and coefficient of elasticity 
of Vicker’s axle-steel No. ‘‘5”’ in tension. 
Length upon which extensions were measured = 150 mm. 
(6 in.) 
Diameter = 0°610" Area 0°2922 square inches. 
Eamdlanee ot ee econ | Mean Differences per 
1000 Ibs. | Extension 1000 lbs 
; ‘Top. Bottom. |inz5355mm. : 
{ 
| 
1 1-39 7°52 8:91 
alae ss) 
2 Oph: Ne eS ai 10°66 | 
| 1-83 
3 2-99 9°50 12°49 | 
baler Sa 
4 3°89 10°41 14:30 | 
| 1-78 
5 4°77 11°31 1608 | 
| 1°82 
6 5°66 12°24 17°90 
1°73 
y 6°51 13°12 19°63 
| 1°78 
8 7°39 14°03 21:42 | 
| 1°84 
9 8:29 14:97 23°26 
| 1:87 + Limit of 
10 9:20 15°93 25:13 | Elasticity 
1 86 
11 10°09 16°90 26°99 | 
| 2°74 
Ti-5 10°78 17°58 28° 36)., 4 
9500 
+ Limit of Elasticity = 9500 lbs. or = 32,500 lbs. per sq. in 
0°2922 (14:5 tons) 
Coeticient of Elasticity = 28,680,000 lbs. per sq. in. 
= 12-805 tons per sq. in. 
