The Copper-beryllium Alloys 



293 



TABLE 2 

 PHYSICAL PROPERTIES-— BERYLHUM-COPPER ALLOYS 



,0 1 2 3 



Percent Beryllium 



Chakt 3. — The effect of cold working after aging at 575°F. for 3 hr. 

 on the tensile strength and Monotron hardness of copper-beryllium 



12 3 



Percent Beryllium 



Chakt 4. — The effect of age hardening at 575°F. on the tensile 

 strength, percentage elongation in 2 in., and Rockwell B hardness of 

 beryllium-copper alloys, previously quenched in water from a tempera- 

 ture of 1450°F. according to Beryllium Corporation of America. *^^* 



