5XXX ALUMINIUM SHEETS WITH HIGH FORMABILTY
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United States of America Patent
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Issued Date -
Jul 4, 2024
app pub date -
Apr 20, 2022
filing date -
Apr 21, 2021
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Abstract
The invention relates to a monolithic aluminium sheet made of a 5xxx series aluminium sheet comprising in wt. % Mg:1.7-2.1, Mn:0.1-0.5, Fe:0.10 to 0.22, Si:0.05-0.25, Cu 0.01-0.20, Cr up to 0.1, Zn up to 0.15, Zr up to 0.1, Ti up to 0.05 wt %, rest aluminium and unavoidable impurities up to 0.05 each and 0.15 total. A method for producing the monolithic 5xxx series aluminium sheet according to the invention comprises the steps of casting, pre-heating, rough hot rolling on a reversible mill with a rough hot rolling entry temperature of more than 440° C., finish hot rolling the ingot with a hot rolling exit temperature of at least 280° C., cold rolling. The invention is useful for automobile manufacturing.
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