The Tin Bronzes 



273 



-1120 



gllO 



CQ 



,100 

 90 

 80 

 70 

 60 

 50 

 40 

 30 

 20 

 10 



Room 400 500 600 700 800 900 1000 1100 1200 

 Tempera-j-ure, Deg. E f I Hn a+ Ternp.) 



Chart 20. — The effect of annealing on the Rockwell hardness and 

 percentage elongation in 2 in. of Carobronze tube, previously cold- 

 drawn 15 and 30 per cent (reduction of area) from a grain size of 0.035 

 mm. (8.00 % tin, 0.30 % phosphorus, balance copper). 



CD. 400 500 600 700 800 900 1000 1100 1200 

 Annealing Temp.in Deg. F. (l Hnat Temp) 



Chabt 21. — The effect of annealing on the yield strength of Caro- 

 bronze tube, previously cold-drawn 15 per cent (reduction of area) 

 from a grain size of 0.035 mm. (8.00 % tin, 0.30 % phosphorus, balance 

 copper) . 



90 

 80 

 70 



t 60 

 >^50 

 S.40 



Si 



o 30 

 o 

 5 20 







CD 400 500 600 700 800 900 1000 1100 1200 

 Annealing Temp.in Deg. F; f 1 Hr. a+ Temp.) 



CsABT 22. — The effect of annealing on the yield strength of Caro- 

 bronze tube, previously cold-drawn 30 per cent (reduction of area) 

 from a grain size of 0.035 ram. (8.00 % tin, 0.30 % phosphorus, balance 

 copper). 



50 100 150 200 250 300 350 400 450 500 

 Tempera+ure in Deg. F ('lHra+ Temp.) 



Chart 23. — The effect of temperature on the thermal conductivity of 

 an 8 per cent phosphor bronze (91.7 % copper, 8.0 % tin, 0.30 % phos- 

 phorus, balance copper) based on data by Griffiths and Schoefield '='' 



