The Brasses 



47 



CD 



500 600 700 800 900 1000 1100 1200 1300 

 Annealing Temp, in Deg.f; ( I Hr a+ Temp.) 



Chart 56. — The effect of annealing on percentage elongation in 

 2 in., Rockwell hardness, and grain size of 85-15 brass condenser tube, 

 previously cold-drawn 65 per cent (reduction of area) from a grain 

 eize of 0.050 mm. (85.01 % copper). 



200 400 600 800 1000 1200 



Temperature , Deg. t^ 



Chart 57. — The effect of elevated temperature on the Izod-impact 

 strength of an annealed 87 % copper-zinc alloy according to D. Bunt- 

 ing. ^^^ 



30 



40 50 



Shear Strength, 1000 Lb. per Sq. In. 



-Conversion chart tor determination of shear strength of red brass (85 % copper, balance 



Accurate to +5 %.''*' 



c) when tensile strength is knowi 



