Nickel Silvers 



201 



11.0 20.7 29.4 31.1 44.0 50.0 55.5 60.5 648 68.6 

 Percen+ Reduction of Area by Rolling 

 01 2 3456789 10 

 BZiS Numbers Hard 

 Chart 29. — The effect of cold rolling on the tensile strength and 

 apparent elastic limit of 18 per cent nickel-silver (spring) strip, pre- 

 viously annealed to two different grain sizes, 0.015 and 0.080 mm. 

 56.56 % copper, 17.77 % nickel, balance zinc) (0.040-in. stock). 



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 23456789 10 

 ess Numbers Hard 

 Chart 30. — The effect of cold rolling on the Rockwell hardness and 

 percentage elongation in 2 in. of 18 per cent nickel-silver (spring) 

 strip, previously annealed to two different grain sizes, 0.015 and 0.080 

 mm. (56.56 % copper, 17.77 % nickel, balance zinc) (0.040-in. stock). 



11.0 207 29.4 372 44.0 500 55.5 60.5 64.8 68.6 

 Percent Reduction of Area by Rolling 

 01 23456789 10 

 B?.5 Numbers Hard 

 Chart 31. — The effect of cold rolling on the yield strengths of 18 

 per cent nickel-silver (spring) strip, previously annealed to a grain 

 size of 0.015 mm. (56.56 % copper, 17.77 % nickel, balance zinc) 

 (0.040-in. stock). 



110 



100 



90 



20 



11.0 207 294 372 44.0 500 55.5 60.5 64.8 68.6 

 Percent Reduction of Area by Rolling 

 01 2345 6789 10 

 B?:- S Numbers Hard 



Chart 32. — The effect of cold rolling on the yield strengths of 18 

 per cent nickel-silver (spring) strip, previously annealed to a grain 

 size of 0.080 mm. (56.56 % copper, 17.77 % nickel, balance zinc) 

 (0.040-in. stock). 



