| 摘要 |
PURPOSE: Provided is a copper alloy for electrical or electronic parts which is superior in yield strength, electric conductivity, spring limit value, resistance property of stress relaxation, bendability and Sn plating property. CONSTITUTION: The copper alloy for electrical or electronic parts comprises Fe: 05-2.4%(% means % by mass, which is the same hereinafter.), Si: 0.02-0.1%, Mg: 0.01-0.2%, Sn: 0.01-0.7%, Zn: 0.01-0.2%, Pb: 0.0005-0.015%, P: less than 0.03% or less, and Mn: 0.03% or less, and further comprises Cu and inevitable impurities as the balance of the copper alloy.
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