COPPER ALLOY FOR ELECTRONIC AND ELECTRICAL DEVICE, COPPER ALLOY SHEET STRIP MATERIAL FOR ELECTRONIC AND ELECTRICAL DEVICE, COMPONENT FOR ELECTRONIC AND ELECTRICAL DEVICE, TERMINAL, BUS BAR AND MOVABLE PIECE FOR RELAY

摘要

PROBLEM TO BE SOLVED: To provide a copper alloy for electronic and electrical device excellent in conductivity, cold workability, flexure workability and castability, a copper alloy sheet strip material for electronic and electrical device, a component for electronic and electrical device, a terminal, a bus bar and a movable piece for relay.SOLUTION: A copper alloy for electronic and electrical device contains Mg in a range of 0.15 mass% or more and less than 0.35 mass%, P in a range of 0.0005 mass% or more and less than 0.01 mass% and the balance Cu with inevitable impurities and has conductivity of over 75%IACS, content of Mg [Mg] (mass%) and content of P [P] (mass%) satisfying a relational expression of [Mg]+20×[P]0.5, content of H of 10 mass.ppm or less, content of O of 100 mass.ppm or less, content of S of 50 mass.ppm or less and content of C of 10 mass.ppm or less.SELECTED DRAWING: None