318 



Copper and Copper-base Alloys 



TABLE 18.— (Coniinued) 



; modulus of elasticity 13.8 X 10^ p.s. 

 ; modulus of elasticity 15 X lO"* p.8.i. 

 ; modulus of elasticity 16.43 X 10" p.s 



" 0.50% extension yield strength 65.300 p.s.i.; 0.20% offset yield strength 93.100 p.s 



■■0.50%, extension yield strength 60,200 p.s.i.; 0.20% offset yield strength 64,500 p.E 



r 0.50% extension yield strength 49,100 p.s.i.; 0.20% offset yield strength 49,000 p.s 



1 Corrosion-fatigue limit, carbonated water, 17,000 p.s.i. for 10' cycles. 



*■ Corrosion-fatigue limit, carbonated water, 17,000 p.s.i. for 10' cycles. 



* Corrosion-fatigue limit, salt water, 20,000 p.s.i. for 10' cycles. 



'0.50% extension yield strength 60,000 p.s.i.; 0.20% offset yield strength 70,400 p.s.i.; modulus of elasticity 14.07 X 10= p.s.i 



*• Corrosion-fatigue limit, carbonated water, 16,000 p.s.i. 



