ELECTRICAL WIRE CONDUCTOR FOR WIRING, METHOD FOR PRODUCING ELECTRICAL WIRE CONDUCTOR FOR WIRING, ELECTRICAL WIRE FOR WIRING, AND COPPER ALLOY WIRE

摘要

Disclosed is an electrical wire conductor for wiring, which is obtained by bundling and twisting a plurality of copper alloy wires that have a composition containing 0.3-1.5% by mass of Cr with the balance made up of Cu and unavoidable impurities. The electrical wire conductor for wiring has a tensile strength of not less than 400 MPa but not more than 650 MPa, an elongation at break of not less than 7%, an electrical conductivity of not less than 65% IACS, a ratio of 0.2% proof stress to tensile strength of not less than 0.7 but not more than 0.95, and a work hardening coefficient of not less than 0.03 but not more than 0.17. Also disclosed are: a method for producing the electrical wire conductor for wiring; an electrical wire for wiring, which is obtained by providing the conductor with an insulation coating; and a copper alloy wire for the conductor.