| 摘要 |
PURPOSE:To obtain a Cu alloy having superior strength, spring characteristics and electric conductivity by adding specified amounts of Sn, P, Fe and other elements to Cu and making the content of O2 as an impurity as low as possible. CONSTITUTION:A Cu alloy consisting of, by weight, 0.8-4.0% Sn, 0.01-0.4% P, 0.05-1.0% Fe, 0.01-1.0% one or more among Al, Hf, Be, Mo, Te, Pb, Co, Zr, Nb, B, Mg, Mn, Si, Sb, Ti, In and As, and the balance Cu with impurities including O2 reduced to <=0.0020% is used as a material for a spring for an electric apparatus, a spring for an instrument or a spring for a switch or a connector. The Cu alloy has superior strength and spring characteristics without deteriorating the electric conductivity.
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