Alloy Designation Systems for Copper and Copper Alloys
Family
Principal
alloying
elementUNS numbers Coppers, high-copper alloys C10000 Brasses Zn C20000, C30000, C40000, C66400, C69800 Phosphor bronzes Sn C50000 Aluminum bronzes Al C60600 to C64200 Silicon bronzes Si C64700 to C66100 Copper nickels, nickel silvers Ni C70000