The Tin Brasses 



145 



no 



100 



90 



^ 80 



<J70 



2.60 



-■ 50 



o 



o 



2-40 

 30 



20 

 10 



11.0 20.7 29.4 37.2 44.0 50.0 55.5 60.6 648 68.6 

 Percent Reduc+ion of Area by Rolling 

 0123456 789 10 

 B& S Numbers Hard 

 Chabt 33. — The effect of cold rolling on the tensile strength and 

 apparent elastic limit of admiralty-metal strip, previously annealed to 

 two different grain si?es, 0.015 and 0.080 mm. (70.37 % copper, 1.01 % 

 tin, balance zinc) (0.040-in. stock). 



-5^110 



100 



"S 90 



80 



70 



=S 60 



■^ 50 



Qj 40 



30 



= 20 



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 

 01 23456789 10 

 B & S Numbers Hoird 

 Chart 34. — The effect of cold rolling on the Rockwell hardness and 

 percentage elongation in 2 in. of admiralty-metal strip, previously 

 annealed to two different grain sizes, 0.015 and 0.080 mm. (70.37 % 

 copper, 1.01 % tin, balance zinc) (0.040-in. stock). 



11.0 20.7 29.4 372 44.0 50.0 55.5 60.5 64.8 68.6 

 Percent Reduction of Area by Rolling 

 01 23456789 10 

 BS S Numbers Hard 

 Chabt 35. — The effect of cold rolling on the yield strength of 

 admiralty-metal strip, previously annealed to a grain size of 0.015 mm. 

 (70.37 % copper, 1.01 %, balance zinc) (0.040-in. stock). 



too 



90 

 . 80 



0)60 



:5 50 



o 

 840 



30 



20 



10 



11.0 20.7 29.4 372 4.40 50.0 55.5 60.5 64.8 68.6 

 Percent Reduction of Areoi by Rolling 

 01 2 345 6789 10 

 B 8. S Numbers Hard 



Chart 36. — The effect of cold rolling on the yield strength of 

 admiralty-metal strip, previously annealed to a grain size of 0.080 mm. 

 (70.37 % copper, 1.01 % tin, balance zinc) (0.040-in. stock). 



