High strength zinc alloys

Abstract

Zinc alloys having improved physical properties consist essentially of 10 to 30 percent by weight of aluminum, 0.3 to 10 percent by weight of copper, 0.01 to 0.1 percent by weight of magnesium, 0.005 to 0.3 percent by weight of at least one of the metals calcium, .[.lithium.]. and sodium, and the balance zinc.

I claim: .[.1. Zinc base alloys having improved mechanical properties consisting essentially of 20 to 24 percent by weight of aluminum, 0.3 to 10 percent by weight of copper, 0.01 to 0.1 percent by weight of magnesium, 0.005 to 0.3 percent by weight of at least one of the metals 
     
        calcium, lithium and sodium, and the balance zinc..]. 2. Zinc base alloys .[.as defined in claim 1.]. .Iadd.having improved mechanical properties .Iaddend.consisting essentially of 20 to 24 percent by weight of aluminum, 0.75 to 1.1 percent .Iadd.by weight .Iaddend.of copper, 0.04 to 0.05 percent by weight of magnesium, 0.01 to 0.03 percent by weight of calcium and balance zinc. .[.3. Zinc base alloys as defined in claim 2 in which the calcium is replaced by lithium..]. .[.4. Zinc base alloys as defined in claim 2 in which the calcium is replaced by sodium..].