| 摘要 |
PURPOSE: To provide easily-workable conductive copper alloy with high strength and high electric conductivity which does not impair the action of so-called third element. CONSTITUTION: The copper alloy has a composition comprising 0.05 to 1.0 wt.% of Cr and 0.05 to 0.25 wt.% of Zr, and further comprising 0.01 to 1.0 wt.%, in total, of one or two or more selected from Zn, Sn, Mn, P, In, Mg, Fe, Ni, Be, Al, B, Co and Si, and the balance of Cu and inevitable impurities, wherein a total amount of Zn, Sn, Mn, P, In, Mg, Fe, Ni, Be, Al, B, Co and Si contained in an inclusion having a particle diameter of 2 μm or more is 5 wt.% or less.
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