COPPER ALLOY

A copper alloy according to the present invention includes 17 mass % to 34 mass % of Zn, 0.02 mass % to 2.0 mass % of Sn, 1.5 mass % to 5 mass % of Ni, and a balance consisting of Cu and unavoidable impurities, in which relationships of 12≤f1=[Zn]+5×[Sn]−2×[Ni]≤30, 10≤[Zn]−0.3×[Sn]−2×[Ni]≤28, 10≤f3=...

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Bibliographische Detailangaben
Hauptverfasser:	Hata, Katsuhiko, Oishi, Keiichiro, Nakasato, Yosuke, Tanaka, Shinji
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS CHEMISTRY FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PERFORMING OPERATIONS POWDER METALLURGY TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	A copper alloy according to the present invention includes 17 mass % to 34 mass % of Zn, 0.02 mass % to 2.0 mass % of Sn, 1.5 mass % to 5 mass % of Ni, and a balance consisting of Cu and unavoidable impurities, in which relationships of 12≤f1=[Zn]+5×[Sn]−2×[Ni]≤30, 10≤[Zn]−0.3×[Sn]−2×[Ni]≤28, 10≤f3={f1×(32−f1)×[Ni]}1/2≤33, 1.20≤0.7×[Ni]+[Sn]≤4, and 1.4≤[Ni]/[Sn]≤90 are satisfied, conductivity is 13% IACS to 25% IACS, a ratio of an α phase is 99.5% or more by area ratio or an area ratio of a γ phase (γ)% and an area ratio of a β phase (β)% in an α phase matrix satisfy a relationship of 0≤2×(γ)+(β)≤0.7.