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COPPER ALLOY FOR ELECTRONIC/ELECTRIC EQUIPMENT, COPPER ALLOY THIN SHEET FOR ELECTRONIC/ELECTRIC EQU

2025-06-18 01:383520下载
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PROBLEM TO BE SOLVED : To provide a copper alloy for electronic/electric equipment which has reliably and sufficiently excellent stress relaxation resistance characteristics and also has excellent strength, bendability and shear processability. SOLUTION : A copper alloy for electronic/electric equipment comprises more than 2.0 mass% and 36.5 mass% or less of Zn, 0.10 mass% or more and 0.90 mass% or less of Sn, 0.15 mass% or more and less than 1.00 mass% of Ni, and 0.005 mass% or more and 0.100 mass% or less of P. The copper alloy also comprises at least one or more kinds selected from Mg, Ti, Cr, Zr, Ca, Sr, Y, Mn, Te and rare earth in a range of 0.001 mass% or more and 0.020 mass% or less in the total content, and the balance Cu with inevitable impurities. The ratio Ni/P of the content of Ni to the content of P satisfies, by atom ratio, 3.00
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