Copper and Copper-base Alloys 



CR 400 500 600 700 800 900 1000 1100 1200 1300 

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



Chart 7. — The effect of annealing on the tensile strength and 

 apparent elastic limit of electrolytic (tough-pitch) copper previously 

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

 two different ready-to-finish grain sizes (0.015 and 0.045 mm.) (0.040- 

 in. stock). 



700 800 900 1000 1100 1200 1300 



Annealing Temp, in Deg. F (1 Hr: at Temp.) 



Chart 8. — The effect of annealing on the grain-growing character- 

 istics of electrolytic (tough-pitch) copper previously cold-rolled 

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

 ready-to-finish grain sizes (0.015 and 0.045 mm.) (0.040-in. stock). 



T3l 



■-I2 



CR 400 500 600 700 800 900 1000 1100 1200 1300 

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



Chart 9. — The effect of annealing on the RockweU F hardness and 

 percentage elongation in 2 in. of electrolytic (tough-pitch) copper 

 previously cold-rolled 6 B. & S. Nos. hard (50 per cent reduction of 

 area) from two different ready-to-finish grain sizes (0.015 and 0.045 

 mm.) (0.040-in. stock). 



CR 400 500 600 700 800 900 1000 1100 1200 1300 

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



Chart 10. — The effect of annealing on the yield strengths of electro- 

 lytic (tough-pitch) copper previously cold-rolled 6 B. & S. Nos. hard 

 (50 per cent reduction of area) from a ready-to-finish grain size of 

 0.015 mm.) (0.040-in. stock). 



