COPPER ALLOY FOR ELECTRICAL AND ELECTRONIC EQUIPMENT, COPPER ALLOY THIN SHEET FOR ELECTRICAL AND ELECTRONIC EQUIPMENT, AND CONDUCTIVE COMPONENT AND TERMINAL FOR ELECTRICAL AND ELECTRONIC EQUIPMENT

摘要

A copper alloy for an electric and electronic device, which has a reliably and sufficiently excellent stress relaxation resistance; and excellent bendability, is provided. In addition, a copper alloy sheet and a terminal using the copper alloy are provided. The copper alloy includes: Zn at 23 mass% or higher and at 36.5 mass% or lower; Sn at 0.1 mass% or more and 0.9 mass% or less; Ni at 0.15 mass% or more and lower than 1.0 mass%; Fe at 0.001 mass% or more and lower than 0.10 mass%; Co at 0.001 mass% or more and lower than 0.1 mass%; P at 0.005 mass% or more and 0.1 mass% or less; ; and a balance including Cu and unavoidable impurities, wherein a ratio Fe/Ni of a Fe content to a Ni content satisfies 0.002‰¤Fe/Ni<0.7 by atomic ratio, a ratio (Ni+Fe)/P of a total content (Ni+Fe) of Ni and Fe to a P content satisfies 3<(Ni+Fe)/P<15 by atomic ratio, a ratio Sn/(Ni+Fe) satisfies 0.3