The Coppers 



25 



400 500 600 700 800 900 1000 1100 1200 1300 1400 

 Annealing Temp, in Deg. R (l Hr. a+ Temp.) 



Chart 68. — The effect of annealing on the Rockwell hardness, 

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



0.05 a\0 0.15 0.20 0.25 0.30 Q35 040 0.45 Q50 

 Addi+ion +o Copper, Percent 



Chart 70. — The effect of phosphorus on the thermal conductivity 

 of copper annealed at 1832°F. for 1 hour and quenched in water 

 based on data by Hanson and Rogers.'*' 



400 500 600 700 800 900 1000 1100 1200 1300 1400 

 Annealing Temp, in Deg. F. f I Hn a+Temp.) 



Chart 69. — The effect of annealing on the yield strength 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). 







1.0 



0.2 0.4 0.6 0.8 



Addition to Copper, Percent 



Chart 71. — The effect of iron on the thermal conductivity of copper 

 based on data by Hanson and Rogers. <<> 



Woods Hole Oceanographic Institution 

 Project No. / 



