WROUGHT COPPER ALLOY, COPPER ALLOY PART, AND PROCESS FOR PRODUCING WROUGHT COPPER ALLOY

摘要

Provided is a wrought copper alloy which has excellent cuttability and extensibility and is optimal for applications where high strength and/or high electrical conductivity is necessary while alleviating environmental burdens. The wrought copper alloy contains 1.5-7.0 mass% Ni, 0.3-2.3 mass% Si, and 0.02-1.0 mass% S and optionally further contains at least one element selected from a group consisting of Sn, Mn, Co, Zr, Ti, Fe, Cr, Al, P, and Zn in a total amount of 0.05-2.0 mass%, with the remainder comprising Cu and incidental impurities. The wrought copper alloy contains a sulfide dispersed therein which contributes to an improvement in cuttability, the sulfide having an average diameter of 0.1-10 µm and an areal proportion of 0.1-10%. The wrought copper alloy has a tensile strength of 500 MPa or more and an electrical conductivity of 25% IACS or more.