10 



Copper and Copper-base Alloys 



TABLE 2 

 PHOSPHORIZED COPPER 



Type op Product — Tube 

 Copper, 99.96%; phosphorus, 0.02% 



Property 



Hard- 



Soif 



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



Elongation, % in 2 in.' 



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



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



Endurance limit'^ (at 20 X 10^ reversals), 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 

 Specific gravity 



16,000,000 



1977 



0.323 



0.0000177 



75-90 



176-205 



Available Creep Data'^> 

 (Deoxidized Copper) 

 Previous history: cold-drawn 0.750-in. rod; tensile strength 43,300 p.s.i. ; % elongation in 2 in., 31 ; % reduction of area, 81. 

 At 400°F. a stress of 9,400 p.s.i. is required to produce a rate of creep per 1,000 hr. of 0.01% 

 At 400°F. a stress of 20,500 p.s.i. is required to produce a rate of creep per 1,000 hr. of 0.10% 

 ' Extruded and cold-drawn to 0.750 in. O.D. by 0.049 in. wall. 

 * Apply to tube only. 

 ' Annealed H hr. at 1290°F. 

 ■f 700°F. anneal for 1 hr. 



CD 500 600 700 800 900 1000 1100 1200 1300 

 Annealing Temp, in Deg.H (iHr. a+ Temp.) 



Chart 22. — The effect of annealing on the tensile strength and appar- 

 ent elastic limit of previously cold-drawn (70 per cent reduction of area) 

 phosphorized copper tubing (99.96 % copper, 0.02 % phosphorus). 



100 



'90 



- 60 



CD 



50 



.2 S 40 

 t ^30 



O X 



500 600 700 800 900 1000 1100 1200 1300 

 Annealing Temp. in Deg.H (iHr.a+ Temp.) 



Chart 23. — The effect of annealing on the percentage elongation in 

 2 in., Rockwell F hardness, and grain size of previously cold-drawn 

 (70 per cent reduction of area) phosphorized copper tubing (99.96 % 

 copper, 0.02 % phosphorus). 



