PURPOSE: To provide an inexpensive golden copper alloy for ornaments high in the degree of the goldness, easy to work and furthermore excellent in mechanical properties. ;CONSTITUTION: A special copper alloy series golden material of an α phase contg., by weight, 8 to 15% Zn, 1 to 5% Ni, 1 to 5% Sn, 0.1 to 1% Mn and ≤90% Cu is prepd. Or, a special copper allay series golden material of an αphase contg. 8 to 15% Zn, 1 to 5% Ni, 1 to 5% Sn, 0.1 to 1% Mn and ≤90% Cu and improved in tensile strength and hardness by solid solution hardening is prepd.;COPYRIGHT: (C)1994,JPO&Japio
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