SOME PHYSICAL PROPERTIES OF NICKEL STEEL. 



161 



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 = 0*2922 square inches. 



Load in- 

 1,000 lbs. 



Reading's in ^mm, 



Mean 

 Extension 



^ roiooo mm - 



Differences per 

 1,000 fts. 



Top. 



1 Bottom. 



25 



2-41 



769 



1010 



1-66 





3 



2-79 



8-14 



10-93 



1-78 





4 



3-60 



9-11 



12-71 



1-68 





5 



4-40 



9-99 



14-39 



1-75 





6 



5-25 



10-89 



16-14 



1-74 





7 



610 



11-78 



17-88 



1-75 





8 



6-97 



12-66 



19-63 



1-84 





9 



7-87 



13-60 



21-47 



1-92 



f Limit of 



10 



8-82 



14-57 



2339 



2-61 



Elasticity 



11 



10-10 



15-90 



26-00 





9 500 

 f Limit of Elasticity = 9,500 lbs. or ' = 32,500 lbs. per sq. in. 



U Zy ^ (14-5 tons) 



Coefficient of Elasticity = 29,000,000 lbs. per sq. in. 



= 12,950 tons per sq. in. 



Table VI. 

 Determination of elastic limit and coefficient of elasticity in com- 

 pression of nickel steel " F " (mild). 



Length upon which contractions were measured = 10" 

 Diameter = 1" Area = 07854 square inches. 



Load in 



Readings in -g^-mm. 



Mean 

 Compression 



Differences per 





1,000 fts. 



Top. 



Bottom. 



iu To^oo mm - 



1,000 fts. 



— 



1 



00U 



400 



4-OU 













1-01 





2-5 



1-20 



4-32 



5-52 



0-46 





3 



1-27 



4-48 



5-75 



0-85 





4 



1-81 



479 



6-60 



0-86 





5 



2 35 



511 



7-46 



0-93 





6 



290 



5-49 



8-39 



85 





7 



3-39 



585 



9-24 



0-86 





8 



385 



625 



10-10 



089 





C— Aug. 3, 



1898. 











