206 



Copper and Copper-base Alloys 



100 



90 

 80 

 70 



^ 60 



& 

 wo 



1- 50 

 <u 



xi 40 



§ 30 

 o 



20 



11.0 20.7 29.4 372 44.0 50.O 555 60.5 64.8 68.6 

 Percent Reduc+fon of Area by Rolling 

 01 2345 6789 10 

 B&S Numbers Hard 



Chakt 45. — The effect of cold rolling on the tensile strength and 

 apparent elastic limit of 15 per cent nickel-silver strip, previously 

 annealed to two different grain sizes, 0.015 and 0.100 mm. (66.18 % 

 copper, 15.02 % nickel, balance zinc) (0.040-in. stock). 



-no, 



o 



£Q 100 

 "D 



8 90 



_J 



^ 80 

 o 

 u. 70 



S 60 



50 



40 



30 



I 20 

 1 10 







11.0 20.7 25:4 372 44.0 50.0 55.5 60.5 648 68.6 

 Percent Reduction of Area by Rolling 

 01 2 3456789 10 

 BSSNumbers Hard 



Chart 46. — The effect of cold rolling on the Rockwell hardness and 

 percentage elongation in 2 in. of 15 per cent nickel-silver strip, previ- 

 ously annealed to two different grain sizes, 0.015 and 0.100 mm. 

 (66.18 % copper, 15.02 % nickel, balance zinc) (0.040-in. stock). 



11.0 20.7 29.4 372 44,0 500 55.5 60.5 648 68.6 

 Percent Reduction ot Area by Rolling 

 01 23456789 10 

 BS(S Numbers Hard 



Chaet 47. — The effect of cold rolling on the yield strengths of 15 

 per cent nickel-silver strip, previously annealed to a grain size of 0.015 

 mm. (66.18% copper, 15.02% nickel, balance zinc) (0.040-in. stock). 



90 



80 



60 



50 



-^ 40 



30 



20 

 10 







11.0 2Q7 29.4 372 44.0 50.0 55.5 60.5 64.8 68.6 

 Percent Reduction of Area by Rolling 

 01 23456 789 10 

 BE(S Numbers Hard 



Chart 48. — The effect of cold rolling on the yield strengths of 15 

 per cent nickel-silver strip, previously annealed to a grain size of 0.100 

 mm. (66.18 % copper, 15.02 % nickel, balance zinc) (0.040-in. stock). 



