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AssigneeConstellium Rolled Products Ravenswood, LLC
InventorsJack Franklin, Dale Baumgartner, Michael Philbrook, Denise Brandt, Timothy Jackson
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The disclosure relates to an aluminum alloy plate having a final thickness of 3 inch or more, and a method for manufacturing same. In the method, an aluminum alloy with a chemical composition of in weight percent: Mg 4.0 to 5.2, Mn 0.4 to 1.0, Zn≤0.3, Zr≤0.3, Cr≤0.3, Ti≤0.3, Fe<0.50, Si<0.45, Cu<0.25, other elements and unavoidable impurities each <0.05 total <0.20 balance aluminum, is cast, preheated and/or homogenized, hot rolled, cold rolled with a cold rolling reduction of 3 to 10%, and stretched directly after cold rolling with a permanent elongation of 0.7 to 5% in the direction of stretching.
A method of manufacturing an aluminum alloy plate having a final thickness of 3 inch or more, the method comprising successively:
Dependencies are inferred from the claim text.