The Aluminum Bronzes 



265 



^110 



o 



o 



cqIOO 



_^ 90 



J' 80 

 o 

 if 70 



c2 50 

 '^ 50 



40 



c 30 



I 20 



9, 10 



CD 600 700 800 900 1000 1100 1200 1300 1400 1500 

 Temperature Deg.F. (I Hr.a+ Temp.) 



Chart 33. — The effect of annealing on the Rockwell hardness, 

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

 silicon-aluminum-bronze rod, previously cold-drawn 10.5 per cent 

 (reduction of area) from extruded material having a grain size of 0.035 

 mm. (7.01 % aluminum, 1.98 % silicon, balance copper) (rod under 

 1 in. in diameter). 



CD 600 700 800 900 1000 HOC 1200 1300 14001500 

 Temperature Deg.F (I Hr. at Temp.) 



Chart 34. — The effect of annealing on the yield strength of silicon- 

 aluminum-bronze rod, previously cold-drawn 10.5 per cent (reduction 

 of area) from extruded material having a grain size of 0.035 mm. 

 (7.01 % aluminum, 1.98 % silicon, balance copper) (rod under 1 in. in 

 diameter). 



0.002 0.004 0.006 0.008 0.010 



Strain, Inches per In. 

 Chart 35. — The effect of cold working and annealing on the stress-strain characteristics of silicon-aluminum-bronze rod, previously extruded 

 (rod under 1 in. in diameter); 100,000-lb. capacity hydraulic testing machine and Templin automatic extensoraeter accurate to 0.00001 in. used 

 (7.01 % aluminum, 1.98 % silicon, balance copper). 



