COPPER ALLOY FOR ELECTRONIC AND ELECTRIC DEVICES, COMPONENT FOR ELECTRONIC AND ELECTRIC DEVICES, AND TERMINAL
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United States of America Patent
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Dec 3, 2015
app pub date -
Dec 20, 2013
filing date -
Jan 9, 2013
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Abstract
A copper alloy for electronic and electric devices has a composition in which the amount of Zr is in a range of 0.05% by mass to 0.15% by mass, the amount of Ca is in a range of 0.001% by mass to less than 0.08% by mass, the amount of Pb is less than 0.05% by mass, the amount of Bi is less than 0.01% by mass, and the balance Cu and inevitable impurities, the ratio Zr/Ca of the amount of Zr to the amount of Ca is 1.2 or more, the copper alloy includes two-phase particles made up of two phases of a phase containing Cu and Zr as main components and a phase containing Cu and Ca as main components and single-phase particles made of a single phase containing Cu and Zr as main components, and the conductivity is more than 88% IACS.
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