Copper alloys, copper alloy ingots and copper alloy solution materials

摘要

A copper alloy has a composition including 0.05 mass% or more and 0.70 mass% or less of Co; 0.02 mass% or more and 0.20 mass% or less of P; 0.005 mass% or more and 0.70 mass% or less of Sn, one or more of B, Cr, and Zr; and furthermore, a Cu balance containing inevitable impurities, wherein X, Y, and Z satisfy the following Expression (1): 1‰¤(X/5)+(Y/50)+(Z/100) and Expression (2): X+Y+Z‰¤1,000, in case where an amount of B is represented by X (massppm), an amount of Cr is represented by Y (massppm), and an amount of Zr is represented by Z (massppm).