| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a copper alloy excellent in stress relaxation resistance as a Cu-Zn-Sn-based copper alloy for conductive components of electronic/electric equipment such as connectors or other terminal materials, and also excellent in various properties such as strength, rollability, bendability, electrical conductivity or the like. <P>SOLUTION: The copper alloy contains, by mass, 23-36.5% Zn, 0.1-0.8% Sn, ≥0.05% to <0.15% Ni, ≥0.005% to <0.10% Fe and 0.005-0.05% P, wherein the atomic ratios of the mutual element contents satisfy 0.05<Fe/Ni<1.5, 3<(Ni+Fe)/P<15 and 0.5<Sn/(Ni+Fe)<5, and the balance Cu with inevitable impurities. Besides, Co of ≥0.005% to <0.10% may be added. <P>COPYRIGHT: (C)2012,JPO&INPIT |
