The Leaded Brasses 



95 



700 800 POO 1000 1100 1200 1300 1400 

 Annealing Temp, in Deg. F. ( IHn at Temp.) 



Chakt 12. — The effect of annealing on the grain-growing charac- 

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

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

 0.065 mm. (7.3.53 % copper, 2.24 % lead, balance zinc) (0.040-in. stock). 



100 



90 

 c U— 1— 



■^80 

 w 

 !- 70 



0) 

 CL 



^ 60 



_j 



§ 50 



o 



40 

 30 

 20 

 10 



CR 500 600 700 800 900 1000 1100 1200 1300 1400 

 Annealing Temp, in Deg.F (1 Hn at Temp.) 



Chart 13. — The effect of annealing on the tensile strength and 

 apparent elastic limit of Lancashire brass strip, previously cold-rolled 

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

 sizes, 0.015 and 0.065 mm. (73.53 % copper, 2.24 % lead, balance zinc) 

 (0.040-in. stock). 



o no 



CD 



> 100 

 ~o 

 c 



3 QO 

 o 80 



ID 

 LI. 



= 70 

 ?" 60 

 ^ 50 



40 



a 30 



J) 20 



10 



CR 500 600 700 800 900 1000 1100 1200 1500 1400 

 Annealing Temp.in Deg. F. f I Hr. at Temp.) 



Chart 14. — The effect of annealing on the Rockwell hardness and 

 percentage elongation in 2 in. of Lancashire brass strip, previously 

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

 different grain sizes, 0.015 and 0.065 mm. (73.53 % copper, 2.24 % lead, 

 balance zinc) (0.040-in. stock). 



100 

 90 



. 80 

 70 



' 60 

 50 

 40 

 30 

 20 

 10 







500 600 700 800 900 1000 1100 1200 1300 1400 

 Annealing Temp, in Deg. F. flHr. at Temp) 



Chart 15. — The effect of annealing on the yield strength of Lanca- 

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

 reduction of area) from a grain size of 0.015 mm.' (73.53 % copper, 

 2.24% lead, balance zinc) (0.040-in. stock). 



