| 摘要 |
PURPOSE:To obtain a copper alloy for electronic equipment excellent in strength, workability, thermal and electric conductivities, corrosion resistance, and heat resistance, by adding specific amounts of Sn, Si, Ni, Co, Cr, and other elements. CONSTITUTION:An ingot of copper alloy containing, by weight, 2.5-6.0% Sn, 0.01-1.0% Si, and 0.1-4.0% of at least one elements among Ni, Co, and Cr or further containing at least one kind among <5.0% Zn, <0.5% Mn, <0.3% P, <1.0% misch metal, <1.0% Al, and <0.3% B is subjected to hot and cold workings, so that copper alloy for electrical parts preeminently excelling the conventional phosphor bronze in high efficiency can be obtained. |
