262 



Copper and Copper-base Alloys 







0.010 



0.002 0.004 0.006 0.008 

 S+roiin, Inches per In. 



Chabt 24. — The effect of cold working and annealing on the stress- 

 strain characteristics of a 10 per cent aluminum-bronze rod, previously 

 extruded (rod under 1.00 in. diameter); 100,000-lb. capacity hydraulic 

 testing machine and Templin automatic extensometer accurate to 

 0.00001 in. used (88. S3 % copper, 10.02 % aluminum, 0.77 % iron, 

 0.31 % manganese). 



90 



d- 80 



S 70 



-" 60 



2 50 



40 



00 20 



10 



200 400 600 800 1000 



Tempercn+ure Deg.F. (1 Hr oi+Temp.) 



Ch.^rt 25. — The effect of elevated temperatures on the tensile 

 strength and percentage elongation of 10 per cent aluminum-bronze 

 rod (9.90 % aluminum). <33' 



100 



i ^° 



cjso 



1.70 



-' 60 



o 



o 



2 50 



c 



X 40 

 S 30 



^ 20 

 w 10 



^ 



200 400 600 800 1000 



Temperci+ure Deg.F (I Hr. at Temp.) 

 Chart 26. — The effect of elevated temperatures on the tensile strength and percentage elongation of a modified 10 per cent aluminum bronze 



(9.90 % aluminum, 1.00 % manganese, balance copper). <"> 



