SOME PHYSICAL PROPERTIES OF NICKEL STEEL. 



163 



Table VII. 



Determination of elastic limit and coefficient of elasticity in com- 

 pression of nickel steel " F." 



Length upon which contractions were measured = 2". 

 Diameter = 1 " Area = 0*7854 square inches. 



Load in 

 1,000 fts. 



Readings in -j^mm. 



Mean 

 Compression 



iu loibdo mm - 



Differences per 

 2,000 fts. 



Top. 



Bottom. 



5 



0-40 



4 39 



4-79 



34 



6 



055 



4-41 



4-96 



032 



8 



069 



4-59 



5-28 



0-26 



10 



085 



4-69 



554 



0-29 



12 



1 02 



4-81 



583 



033 



14 



119 



497 



6-16 



030 



16 



1-34 



512 



6-46 



035 



18 



1-50 



531 



6-81 



036 



20 



167 



5 50 



7-17 



0-35 



22 



1-82 



570 



7-52 



0-39 f Limit of 



24 



201 



590 



7-91 



Elasticity 

 0-46 



26 



2 12 



615 



8-37 



053 



28 



2 48 



6-42 



8-90 



067 



30 



2 85 



672 



9-57 



0-44 



32 



302 



699 



1001 



0-79 



34 



3 40 



7-40 



1080 





23.000 



1 Limit of Elasticity = 23,000 fts. or ^=gj=£ = 30,580 fts. per sq. in. 



(13"1 tons) 

 Coefficient of Elasticity = 28,140,000 lbs. per sq. in. 

 = 12,560 tons per sq. in. 



