370 



STRENGTH OF STEEL. 



deleterious to the metal. It will be seen that the specimens 

 were treated in a great variety of ways : 



* STROMEYER'S TESTS OF STEEL. 



193. Tests of Steel from Crank Axles. In making 

 tests of this material it is usual to take the specimens 

 from the slabs cut out in forming the cranks : some 

 of the specimens should be cut radially, and others 

 circumferentially or at right angles to the axis of the 

 shaft. One of these specimens is shown in the accom- 

 panying figure (181). The specimen is very small, and only 

 allows of measurements being taken on about 2in. 



* Min. Proc. Inst. C.E., vol. Ixxxiv. 



