Classification of copper and its alloys
Family Principal alloying element UNS Numbers
Copper alloys, brass Zinc (Zn) C1xxxx–C4xxxx,C66400–C69800
Phosphor Bronze Tin (Sn) C5xxxx
Aluminium bronzes Aluminium (Al) C60600–C64200
Silicon Bronze Silicon (Si) C64700–C66100
Copper nickel, nickel silvers Nickel (Ni) C7xxxx