ALLUMINUM ALLOY PIPE AND ALUMINUM ALLOY STRUCTURAL MEMBER FOR AUTOMOBILE USING THE SAME
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United States of America Patent
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app pub date -
Mar 7, 2008
filing date -
Sep 9, 2005
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Abandoned
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Abstract
An Al--Mg-based aluminum alloy pipe for hot working, having an alloy composition having from 2.5% by mass to 2.8% by mass of Mg, 0.25% by mass or less of Si, 0.35% by mass or less of Fe, and from 0.25% by mass to 0.35% by mass of Cr, with the balance being inevitable impurities and Al, wherein an area ratio of cavities after hot working is 2.3% or less; and an aluminum alloy structural member for automobile using the same.
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