164 



W. H. WARREN AND S. H. BARRACLOUGH. 



Table VIII. 



Determination of the elastic limit and coefficient of elasticity in 

 compression of nickel steel et T." 



Length upon which contractions were measured = 10" 



Diameter =1" Area = 07854. 



Load in 



Readings 



n ¥,obo" mm 



Mean 

 Compression 



DifFfirfinnes Tifir 



1,000 lbs. 



Top. 



Bottom. 



in foiooo mm - 





2,000 lbs. 



5 



210 



5-74 



7-84 



1-77 





7 



3-10 



6-51 



9-61 



169 





9 



4-01 



7-29 



11-30 



1-75 





11 



4-96 



8-09 



1305 



1-74 





13 



5-89 



8-90 



14-79 



1-76 





15 



6-83 



9-72 



16-55 



1-79 





17 



7-76 



10-58 



18-34 



1-72 





19 



8-61 



11-45 



20-06 



1-78 





21 



9-52 



12-32 



21-84 



1-76 





23 



1041 



13-19 



23-60 



1-80 



f Limit of 

 Elasticity 



25 



11-31 



14-09 



, 2540 



1-78 





27 



1218 



1500 



27-18 



1-80 





29 



1308 



15-90 



2898 



1-82 





31 



14-00 



16-80 



30 80 



]-83 





33 



14-91 



17-72 



3263 



1-92 





35 



15-88 



18-67 



34-55 



1-86 





37 



16-81 



19-60 



36-41 



1-93 





39 



17-79 



20 55 



38-34 



2-02 





41 



18-76 



21-60 



40-36 



2-18 





43 



1985 



22-69 



42-54 



2-18 





45 



20-96 



2376 



44-72 





1 



nit of "Rla.f 



?timtv = 



23000 lbs 



23,000 



. Or -zr-^zrzr- 



= 29? 



00 Iris, npr an. 



f Limit of Elasticity = 23000 lbs. or n =~= = 29,300 lbs. per sq. i 



Coefficient of Elasticity = 28,170,000 lbs. per sq. in. 

 = 12,570 tons per sq. in. 



in. 



