Product Code:SAE AMS4520 Title:Leaded Phosphor Bronze Strip, 88.5Cu - 4.0Sn - 4.0Pb - 3.0Zn - 0.26P, Cold Rolled, Half Hard (HO2) Issuing Committee:Ams D Nonferrous Alloys Committee Scope:This specification covers a copper alloy in the form of strip.This strip has been used typically for rolled, split bushings, but usage is not limited to such applications.