24 



Copper and Copper-base Alloys 



60 



,5" 50 



-0 40 



30 



20 



10 



10 20 30 40 50 60 



Percent Reduc+ion by Cold Working 



Chart 64. — The effect of cold drawing on the tensile strength and 

 apparent elastic limit of tellurium copper rod previously annealed to a 

 grain size of 0.025 mm. (0.45 % tellurium, balance copper) (rod under 

 1 in. in diameter). 



10 20 . 30 40 50 60 



Percent Reduc+ion by Cold Working 



Chart 65. — The effect of cold drawing on the Rockwell hardness, 

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

 tellurium copper rod previously annealed to a grain size of 0.025 mm. 

 (0.45 % tellurium, balance copper) (rod under 1 in. in diameter). 



10 20 30 40 50 60 



Percent Reduction by Cold Working 



Chart 66. — The effect of cold drawing on the yield strength of 

 tellurium copper rod previously annealed to a grain size of 0.025 mm. 

 (0.045 % tellurium, balance copper) (rod under 1 in. in diameter). 



400 500 600 700 800 000 1000 1100 1200 1500 1400 

 Temp, in Deg. F. f1 Hr. at Temp.) 



Chart 67. — The effect of annealing on the tensile strength, apparent 

 elastic limit, and grain size of tellurium copper rod previously cold- 

 drawn 50 per cent (reduction of area) from material having a grain 

 size of 0.025 mm. (0.45 % tellurium, balance copper) (rod under 1 in. 

 in diameter). 



