The Leaded Brasses 



99 



0.100 



0.080 



0.060 



0.040 



0.020 



0.000 



700 800 900 1000 1100 1200 1300 



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



Chart 25. — The effect of annealing on the grain-growing charac- 

 teristics of leaded high-brass strip, previously cold-rolled 6 B. & S. Nos. 

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

 0.080 mm. (65.19 % copper, 1.09 % lead, balance zinc) (0.040-in. stock). 



CR 400 500 600 700 800 900 1000 1100 1200 1300 

 Annealing Temp, in Deg.F. fl Hr. af Temp.) 

 Chart 26. — The effect of annealing on the tensile strength and 

 apparent elastic limit of leaded high-brass strip, previously cold-rolled 

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

 sizes, 0.015 and 0.080 mm. (65.19 % copper, 1.09 % lead, balance zinc) 

 (0.040-in. stock). 



§110 



'^lOO 

 a 



^ 90 



^ 80 

 o 



ID 



^ 70 



CO 60 



S .50 



S 40 



I 30 



= 20 



CR 400 500 600 700 800 900 1000 1100 1200 1300 

 Annealing Temp, in Deg.F. (iHn a+Temp.) 



Chart 27. — The effect of annealing on the Rockwell hardness and 

 percentage elongation in 2 in. of leaded high-brass strip, previously 

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

 different grain sizes, 0.015 and 0.080 mm. (65.19 % copper, 1.09 % lead, 

 balance zinc) (0.040-in. stock). 



100 

 . 90 



V 70 



5 60 



i 50 



40 



30 



20 



10 



400 500 600 700 800 900 1000 1100 1200 1300 

 Annealing Temp, in Deg. F. ( I Hr. at Temp.) 



Chart 28. — The effect of annealing on the yield strength of leaded 

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

 reduction of area) from a grain size of 0.015 mm. (65.19% copper, 

 1.09 % lead, balance zinc) (0.040-in. stock). 



