COPPER ALLOY FOR SEAMLESS PIPES
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United States of America Patent
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Issued Date -
Jan 14, 2010
app pub date -
Oct 2, 2007
filing date -
Oct 4, 2006
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Abandoned
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Abstract
A seamless pipe copper alloy includes Zr and at least one of Al, Sn, and Zn, with the balance being Cu and unavoidable impurities, the Al content, the Sn content, the Zn content, and the Zr content of the copper alloy satisfying the expressions 0.05≦A+B+C, 0.01≦D≦0.5, and 0.25≦A+B+C+D≦0.8 (wherein A represents the Al content (mass %), B represents the Sn content (mass %), C represents the Zn content (mass %), and D represents the Zr content (mass %)). The seamless pipe copper alloy exhibits excellent workability, high strength, and high thermal conductivity. The seamless pipe copper alloy also shows only a small decrease in strength due to brazing.
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