Copper-zinc alloy for a valve guide
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United States of America Patent
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May 7, 2013
Grant Date -
Oct 4, 2007
app pub date -
Jun 1, 2007
filing date -
Dec 2, 2004
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Abstract
A novel copper-zinc alloy is particularly suited for a valve guide. The copper-zinc alloy contains 59 to 73% copper, 2.7 to 8.3% manganese, 1.5 to 6% aluminum, 0.2 to 4% silicon, 0.2 to 3% iron, 0 to 2% lead, 0 to 2% nickel, 0 to 0.2% tin, remainder zinc and inevitable impurities.
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