218 



Copper and Copper-base Alloys 



110 



100 



90 



80 



11.0 20.7 29.4 37.2 44.0 50.0 55.5 60.5 64.8 68.6 

 Percent Reduction of Area by Rolling 

 I Z 3 4- . 5 6 7 8 9 10 

 B&S Numbers Hard 



■ Chart 85. — The effect of cold rolling on the tensile strength and 

 apparent elastic limit of 5 per cent nickel-silver strip, previously 

 annealed to two different grain sizes, 0.015 and 0.110 mm. (63.55% 

 copper, 5.14% nickel, balance zinc) (0.040-in. stock). 



11.0 207 294 372 44.0 50.0 55.5 60.5 64.8 68.6 

 Perceni Reduc+ion of Area by Rolling 

 0! 2345 6789 10 

 BB/S Numbers Hard 



Chart 86. — The effect of cold rolling on the Rockwell hardness and 

 percentage elongation in 2 in. of 5 per cent nickel-silver strip, previously 

 annealed to two different grain sizes, 0.015 and 0.110 mm. (63.55 % 

 copper, 5.14 % nickel, balance zinc) (0.040-in. stock). 



100 



90 



80 



70 



60 



D.50 



40 



II.O 20.7 29.4 372 440 5Q0 55.5 60.5 64.8 68.6 

 Percenf Reduction of Area by Rolling 

 01 2345 6789 10 

 BS-S Numbers Hard 



Chart 87. — The effect of cold rolling on the yield strengths of 5 

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

 mm. (63.55 % copper, 5.14 % nickel, balance zinc) (0.040-in. stock). 



00 

 90 

 80 



d^ 60 



I. 50 



o 40 



o 



o 



-- 30 



20 



10 







11.0 20.7 294 37Z 44.0 5Q0 55.5 605 648 68.6 

 Percent Reduction of Area by Rolling 

 01 2 3456789 10 

 BSS Numbers Hard 

 Chart 88. — The effect of cold rolling on the yield strengths of 5 

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

 0.110 mm. (63.55% copper, 5.14% nickel, balance zinc) (0.040-in. 

 stock) . 



