COPPER ALLOY WIRE AND COPPER ALLOY WIRE MANUFACTURING METHOD
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United States of America Patent
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May 21, 2015
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Jul 31, 2012
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Jul 31, 2012
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A copper alloy wire of the present invention consists of a precipitation strengthening type copper alloy containing Co, P, and Sn, wherein an average grain size of precipitates observed through cross-sectional structure observation immediately after performing an aging heat treatment is equal to or greater than 15 nm and a number of precipitates having grain sizes of equal to or greater than 5 nm is 80% or higher of a total number of observed precipitates, and the copper alloy wire is subjected to cold working after the aging heat treatment.
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