The Brasses 



43 



90 



80 



70 



C 60 



^^50 



t>o 



P 



40 



"gioo 



P 70 

 .£ !2 60 



30 



o 20 



CR 400 500 600 700 800 900 1000 1100 1200 1300 

 Annealing Temp. in Deg.F.f 1 Hr a\ Temp.) 



Chart 40. — The effect of annealing on the tensile strength and 

 apparent elastic limit of rich low-brass strip previously cold-rolled 

 6 B. & S. Nos. (50 per cent reduction of area) from two different grain 

 sizes, 0.015 and 0.070 mm. (85.42 % copper) (0.040-in. stock). 



C 



CR 400 500 600 700 800 900 1000 1100 I2O0 1300 1400 

 Annealing Temp, in Deg.F C 1 Hr. a+ Temp.) 



Chart 41. — The effect of annealing on the Rockwell hardness and 

 percentage of elongation in 2 in. of rich low-brass strip, previously 

 cold-rolled 6 B. & S. Nos. (50 per cent reduction of area) from two 

 different grain sizes, 0.015 and 0.070 mm. (85.42 % copper) (0.040-in. 

 stock) . 



0.200 

 0.180 

 0.160 

 0140 

 0\20 

 0100 

 0.080 

 0060 

 0.040 

 0.020 



600 700 800 900 1000 1100 1200 1300 1400 

 Annealing Temp. in Deg.F (iHr.at Temp.) 



Chart 42. — The effect of annealing on the grain-growing charac- 

 teristics of rich low-brass strip, previously cold-rolled 6 B. & S. Nos. 

 (50 per cent reduction of area) from two different grain sizes, 0.015 

 and 0.070 mm. (85.42 % copper) (0.040-in. stock). 



CR 400 500 600 700 800 900 1000 1100 1200 1300 

 Annealing Temp, in Deg. F. f IHr a+ Temp.) 



Chart 43. — The effect of annealing on the yield strength of rich 

 low-brass strip, previously cold-rolled 6 B. & S. Nos. (50 per cent 

 reduction of area) from a grain size of 0.015 mm. (85.42 % copper) 

 (0.040-in. stock). 



