Aluminum alloy material for storage container for high-pressure hydrogen gas
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United States of America Patent
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Feb 2, 2016
Grant Date -
Jun 27, 2013
app pub date -
Mar 17, 2011
filing date -
Mar 18, 2010
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Abstract
An object of the present invention is to provide a 6000-series aluminum alloy material for a high-pressure gas container which has both of resistance to hydrogen embrittlement and mechanical properties. In the aluminum alloy material for a high-pressure gas container, the contents of Fe, Mn and Cu fall within narrower ranges than the standard composition of AA6066 alloy. The aluminum alloy material is produced to have a structure in which a predetermined amount of fine dispersed particles are dispersed therein and coarse crystallized materials are small, and therefore strength and resistance to hydrogen embrittlement are improved, which are required for a high-pressure gas container.
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