Fatigue and Corrosion-fatigue Properties of Wrought Copper and Copper-base Alloys 307 



TABLE 7 



EFFECT OF BISMUTH ON FATIGUE STRENGTH OF COPPER 



According to Hanson and Ford 



' Broken specimen (Izod). 

 * 2 X 10' cycles. 



TABLE 8 

 85-16, RED BRASS OR RICH LOW BRASS 



"0.5% extension yield strength 29,300 p.s.i.; 0.20% offset yield strength 29,200 p.s.i.;* modulus of elasticity 17,200,000 p.s 

 ^ Corrosion-fatigue limit, both salt and carbonated water, 15,500 p.s.i. for 2 X 10^ cycles. 

 <= Corrosion-fatigue limit, both salt and carbonated water, 15,500 p.s.i. for 2.5 X 10' cycles. 



