170 



Copper and Copper-base Alloys 



100 



c 90 



^ 80 



S. 70 



-■ 60 



o 



o 



2 50 



I 40 



\ 30 



-I- 

 uo 



_w 20 



£ 10 



I— 







100 200 300 400 500 600 700 800 900 

 Tempera+ure in Deg. F. 



Chart 112. — The effect of elevated temperature on the tensile 

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

 area of manganese-bronze rod, previously cold-worked 30 per cent 

 (reduction of area) from a grain size of 0.025 mm. (58.64 % copper, 

 1.13 % iron, 0.75 % tin, 0.02 % manganese, balance zinc) (rod under 

 1 in. in diameter). 



50 100 150 200 250 300 350 400 450 500 

 Temperature, Deg.H C lHr.a+ Temp.) 



Chart 113. — The effect of temperature on the thermal conductivity 

 of a manganese bronze (60.70 % copper, 0.50 % tin, 0.30 % manganese, 

 balance zinc) according to Griffiths and Schoefield.**^' 



40 41 42 43 44 45 46 47 48 A'^ 5Q 

 Shear S+reng+h, 1000 Lb. per Sq. In. 



-Conversion chart for determination of shear strength of manganese bronze (58.50 % copper, 0.75 % tin, 1.25 % iron, balance zinc) 

 when tensile strength is known. Accurate to +5 %.'**' 



