284 



Copper and Copper-base Alloys 



120 



100 



90 



80 



c 70 



.£ 60 



(u 50 



SL 40 



30 



D^ 20 



CR 400 500 600 700 800 900 lOOO 1100 1200 1300 

 Annealing Temp, in Deg.F('2 Hr a+ Temp.) 



Chart SO. — The effect of annealing on the tensile strength and per- 

 centage elongation in 2 in. of a phosphor bronze (7.41 % tin, 0.38 % 

 phosphorus, balance copper) , previously cold-rolled 60 per cent (reduc- 

 tion of area) according to Cook and Tallis.''"' 



260 



240 



220 



200 



180 



75. 160 

 E 

 P 140 



"0 



120 



I 100 



5 80 



60 



40 



20 



CR 400 500 600 700 800 900 1000 1100 1200 1300 

 Annealing Temp, in Deg.K (2 Ht*. a+ Temp.) 



Chakt 51. — The effect of annealing on the Erichsen ductility value 

 and hardness of a phosphor bronze (7.41 % tin, 0.38 % phosphorus, 

 balance copper), previously cold-rolled CO per cent (reduction of area) 

 according to Cook and Tallis.'*'" 



120 



110 



100 



90 



80 



• 70 



60 



50 



' 40 



30 



20 



10 



I I Code I I 



Penultimate anneal-1150 deq. F., 2 hn . 

 (T) 10% reduction by cold work 



(?) 35 7o reduction by cold work 

 '050 70 " " '> « 



-(5) 60% 

 (6) 70 7o 



01 Z345678 



Percent Tin 

 Chart 52. — The effect of tin on the tensile strength of copper con- 

 taining 0.05 per cent phosphorus (cold-rolled varying amounts from a 

 ready-to-finish anneal of 1150°F. for 2 hr.) based on data by Cook and 

 Tallis.''"' (Solid line based on actual data; dotted line extrapolated.) 



I Code . 

 I Penultimate anneal - lISOdeg.F., 2hr 



(T) 10% reduction by cold work 



®207o 



_@357o 



05O7o 



a- 90 

 J5 80 



o 

 o 



2 60 

 >^ 



5 50 

 o 



•2 40 



-*- 

 i- 



Q-30 

 o 



^ 20 



|,0 



i:^ 



3 4 5 



Percent Tin 



Chart 53. — The effect of tin on the proportional limit of copper con- 

 taining 0.05 per cent phosphorus (cold-rolled varying amounts from a 

 ready-to-£inish anneal of 11S0°F. for 2 hr.) based on data by Cook and 

 Tallis.<=°' (Solid line based on actual data; dotted line extrapolated.) 



