| 摘要 |
PURPOSE:To satisfy the strength, heat resistance and bendability of the titled alloy and to remarkably improve the electrical (heat) conductivity of the same by adding the specific ratios of Sn and two kinds of Cr and rare earth elements to copper and regulating the O2 content to the specific value or below. CONSTITUTION:The titled alloy contains, by weight, 0.05-0.5% Sn, the total 0.01-0.3% of two kinds of Cr and rare earth elements, <=0.0010% O2 and the balance consisting of Cu. more specifically, the strength and heat resistance are improved without remarkably deteriorating the conductivity of electricity and heat characteristics of Cu by adding Sn to ordinary oxygen-free copper. At the same time, the strength and heat resistance are furthermore improved without excessively lowering the conductivity of electricity and heat by adding two kinds of Cr and rare earth elements. The oxidation of each element to be added is prevented and they act effectively owing to the regulation of the O2 content.
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