The Coppers 



11 



TABLE 3 

 HIGH-CONDUCTIVITY, OXYGEN-FREE COPPER" 



Copper, 99.94%; phosphorus, nil 



Property 



Hard" 



Soft" 



Tensile strength, p.s.i. (000 omitted) 



Apparent elastic limit, p.s.i. (000 omitted) 



Yield strength 0.5% extension, p.s.i. (000 omitted) 



Yield strength 0.2% offset, p.s.i. (000 omitted) 



Yield strength 0.1 % offset, p.s.i. (000 omitted) 



Elongation, % in 2 in 



Rockwell hardness F, Ke-in. ball, 60-kg. load 



Rockwell hardness B, Ke-™- ball, 100-kg. load 



Rockwell hardness 16-T, Ke-in. ball, 15-kg. load 



Rockwell hardness 30-T, Ke-in. ball, 30-kg. load '. 



Endurance limit, p.s.i. (000 omitted) 



Young's modulus of elasticity, p.s.i 



Melting point, °F 



Density, lb. per cu. in 



Coefficient of expansion, per °C. from 25-300°C 



Electrical conductivity, % I.A.C.S.,<«'> 68°F 



Thermal conductivity,'^" B.t.u. per sq. ft. per ft. per hr. per °F., 68°F 



" Apply to strip only (all testa conducted on 0.040-m stock). 



' 6 B. & S. Nos., hard, 0.040-0.015 mm. grain size at ready-to-finish. 



= Refers to 1300°F. anneal (1 hr. at temperature). 



50-56 

 38-43 

 47-55 

 47-54 

 45-52 



3 

 90-92 

 53-59 



62-64 

 17 



32 

 3 

 8 

 6 

 6 

 43 

 33 



16,000,000 



1980 



0.323 



0.0000177 



102 



228 



11.0 20.7 2Q.4 37.2 44.0 50.0 55.5 60.5 64.8 68.6 

 Percent Reduction of Area by Rolling 

 01 23456789 10 

 B and S Numbers Hard 



Chart 24. — The effect of cold rolling on the tensile strength and 

 apparent elastic limit of oxygen-free copper strip (no residual deoxidant) 

 previously annealed to two different grain sizes, 0.015 and 0.040 mm. 

 (99.94 7o copper) (0.040-in. stock). 



" 40 



-p 30 



20 



11.0 20.7 2P.4 372 44.0 50.0 55.5 60.5 648 68.6 

 Percent Reduction of Area by Rolling 

 I 2345678 9 10 

 Band S Numbers Hard 



Chabt 25. — The effect of cold rolling on the Rockwell F and B hard- 

 ness and percentage elongation of oxygen-free copper strip (no residual 

 deoxidant) previously annealed to two different grain sizes, 0.015 and 

 0.040 mm. (99.94 % copper) (0.040-in. stock). 



