74 Messrs. K. Honda and T. Tefada on the Change of 

 70-32 pir cent. Nickel-Steel. PL IV. fig. 40. 

 Table XXXII. t = 19°*2 0. 



T = 1109gr./mm.2 



T=3361 



gr./mrn. 2 



T=5936 



gr./rnm. 2 



9=2°-75. 



6 = 



2°-65. 



e=. 



2° -55. 





dK 





SK 





SK 



H. 



ir xl0^. 



H. 



^ xW1 - 



H. 



ir xm 



3-8 



006 



3-0 



0-26 



3-2 



007 







6-7 



0-97 



11-1 



0-97 



lTi 



2-20 



15-5 



2-33 



21-1 



1-72 



23-2 



4-44 



23-5 



316 



229 



1-92 



1 35-8 5-70 



35-7 



3-92 



34-7 



2-41 







50-3 



4-48 



48-9 



2-92 



64-1 



6-99 



69-2 



4-95 



68-9 



3-32 



85-7 



7-77 



93-8 



5*35 



93-6 



3-64 



150-2 



8-19 



132-1 



5-69 



131-9 



4-00 



248 



8-60 



202 



6-03 



202 



4-28 



, 342 



8-69 



303 



6-25 



303 



4-54 



432 



8-83 



430 



634 



433 



4-61 



I 



0=5°-3. 



= 



5 Q 1. 



e= 



3°-05. 



4-5 



0-36 



3-3 



0-37 



2-7 



0-17 







7-8 



1-18 



9-2 



0-82 



12-9 



218 



15-8 



2-26 



180 



1-50 



! 23-1 



3-69 



22-8 



2-90 



23-5 



1-83 



! 39-8 



502 



342 



3-64 



34-8 



2-32 







48-5 



4-23 



49-1 



2-80 



57-9 



5-77 



68 9 



4-70 



696 



3-17 



93-8 



6-55 



93-8 



5-06 



94-1 



3-48 



132-0 



6-94 



131-6 



5-39 



132-7 



3-80 



203 



7-28 



202 



5-71 



202 



4-11 



304 



7-53 



302 



5-94 



298 



4-30 



432 



7-67 



431 



605 



429 



4-43 



Thus the change of rigidity in these nickel-steels is similar, 

 in its general aspect, to that given by the oscillation method. 

 In 50*72 per cent. Ni and 70*32 per cent. M, however, the 

 small initial decrease of rigidity is not observed. Increased 

 twist diminishes the change of rigidity; increased tension 

 affects the change in a similar manner but in a greater 

 degree. The change as given by Barus's method is generally 

 greater than that by the oscillation method. The difference 

 becomes less as the tension is increased. In 28*74 per cent. 

 Ni, the results by the two different methods fairly agree, 

 and the agreement becomes closer with increased tension. 

 Thus, also in these alloys, relation (3) is not generally satis- 

 fied, except in 28*74 per cent. Ni. The difference, however, 

 becomes less as the tension is increased. 



