Extruded material of a free-cutting aluminum alloy excellent in embrittlement resistance at a high temperature
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United States of America Patent
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Jun 4, 2013
Grant Date -
Aug 7, 2008
app pub date -
Mar 31, 2008
filing date -
Sep 30, 2005
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Abstract
An extruded material of a free-cutting aluminum alloy excellent in embrittlement resistance at a high temperature, containing from 3 to 6% by mass of Cu and from 0.9 to 3% by mass of Bi with the balance being Aluminum and inevitable impurities, wherein a temperature for reducing the Charpy impact test value to half of the value at room temperature is 180° C. or more.
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