184 Prof. W. C. Unwin. On the Yield Point of Iron [Dec. 13, 



Experiment II. 

 Wrought Iron Bar, No. 626. 



Original diameter = -844 in. Area = '5596 sq. in. Clips 8 in. apart. 



two minutes the gas was turned off, and the bar allowed to cool in 

 the furnace. 



The autograph diagrams are shown in fig. 7. The yield point is 

 generally less well marked in wrought iron than in steel. In tests 

 2 and 3 above, although there was rapid elongation beyond a certain 



12 1 

 n - 



jo- 



- 



B- 



FIG. 7. 



W. I. BflR* N2 626 



ZLQNGfiT/ONS OOUBL&O 



