110 

 100 

 90 

 80 

 70 

 60 

 50 

 40 

 30 

 20 



r/ie Brasses 



10 



75 



CD 



400 500 600 700 800 900 1000 1100 1200 1300 

 Annealing Temp, in Deg.Ff iHr.at Temp.) 



Chart 147. — The effect of annealing on the Rockwell hardness, 

 percentage elongation in 2 in., and percentage reduction of area of 

 common high-brass rod, previously cold-drawn 40 per cent (reduction 

 of area) from material having a grain size of 0.040 mm. (64.87 % 

 copper) (rod under 1 in. in diameter) . 



50 



<i'40 



30 



20 



CD 400 500 600 700 800 900 1000 1100 1200 1300 

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



Chart 148. — The effect of annealing on the yield strength of common 

 high-brass rod, previously cold-drawn 40 per cent (reduction of area) 

 from material having a grain size of 0.040 mm. (64.87 % copper) (rod 

 under 1 in. in diameter). 



200 400 600 800 1000 1200 1400 1600 

 Temperature, Deg.R (iHr. at Temp.) 



Chart 149. — The effect of elevated temperature on the tensile strength, percentage reduction of area, and percentage elongation in 2 in. of 

 common high-brass rod, previously cold-worked 50 per cent (reduction of area) according to W. B. Price''* (67.61 % copper). 



