698 PROCEEDINGS OF SECTION H. 
Table V. 
Determination of the elastic limit and coefficient of 
elasticity in tension of Vicker’s axle-steel No. “ 6.”’ 
Length upon which elongations were measured = 150 mm. 
(6 in.) 
Diameter = 0°610" Area = 02922 square inches. 
Readings in =,,5mm. Mean 
Load in Fe Differences per 
z Extension! 
1000 Ibs. Top. | Bottom. |in;g4,,mm. 1000 Ibs. 
| 
2°5 | 2°41 7°69 10°10 
| 1°66 
3 2°79 8 14 0°93 
1:78 
4 3°60 Oet1 12357. 
| 1°68 
5 | 4°40 9°99 14°39 
1°75 
6 (Sop 25 10°89 16°14 
| 1°74 
7 | 6°10 11°78 17°88 
1-75 
8 6°97 12°66 19°63 
| 1°84 
9 7°87 13°60 21°47 
| 1°92 + Limit of 
10 8-82 14°57 23°39 | Elasticity 
| 2°61 
11 fe  1O=40 15°90 26°00 
9506 
————__ == 32,500 lbs. per sq. inw 
0°2922 (14°5 tons) 
Coefficient of Elasticity = 29,000,000 lbs. per square inch 
= 12,950 tons per square inch. 
+ Limit of Elasticity = 9500 lbs. or 
