The Tin Brasses 



151 



CD 400 500 600 700 800 900 1000 1100 1200 1300 

 Temp, in Deg.F. (l Hr. at Temp.) 



Chart 52. — The effect of annealing on the Rockwell hardness, 

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

 Tobin-bronze rod, previously cold-drawn 30 per cent from material 

 having a grain size of 0.025 mm. (60.00 % copper, 0.74 % tin, balance 

 zinc) (rod under 1 in. in diameter). 



400 500 600 700 800 900 1000 1100 1200 1300 

 Temp, in Deg. F. (1 Hr. at Temp.) 



Chart 53. — ^The effect of annealing on the yield strength of Tobin- 

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

 material having a grain size of 0.025 mm. (60.00 % copper, 0.74 % tin, 

 balance zinc) (rod under 1 in. in diameter). 







12 



ef 





 600 



100 200 300 400 500 



Temp, in Deg.F. ( I Hr. at Temp.j 



Chart 54. — The effect of elevated temperature on the torsional 

 properties of Tobin-bronze rod (59.86 % copper, 0.80 % tin, 0.46 % iron, 

 balance zinc) according to Bregousky and Spring'"'") (j-od under 1 in. 

 in diameter). 



200 400 600 800 1000 1200 1400 1600 1800 

 Temp, in Deg. F (l Hr. a\ Temp.) 



CH.VHT 55. — The effect of elevated temperature on the tensile 

 strength, percentage elongation in 2 in., and percentage reduction of 

 area of Tobin-bronze rod (60.14 % copper, 0.75 % tin, balance zinc) 

 according to W. B. Price''' (rod under 1 in. in diameter). 



