ALUMINUM-COPPER-LITHIUM ALLOY PRODUCTS
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United States of America Patent
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Issued Date -
Mar 25, 2021
app pub date -
Apr 9, 2018
filing date -
Apr 10, 2017
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Abstract
The invention relates to a product made of an aluminium-based alloy comprising, by wt. %, Cu: 2.5-3.4; Li: I.6-2.2; Mg: 0.4-0.9; Mn: 0.2-0.6, Zr: 0.08-0.18; Zn:<0.4; Ag:<0.15; Fe+Si::S 0.20; at least one element selected from Ti, Se, Cr, Hf and V, the content of the element, if selected, being: Ti: O.OI-0.15; Se: O.OI-0.15; Cr: 0.01-0.3; Hf: 0.01-0.5; V: 0.01-0.3; other elements::S 0.05 each and ::S 0.15 in total; the remainder being aluminium. The invention also relates to a method for manufacturing an aluminum alloy-based, extruded, rolled and/or forged product, and a structural element incorporating at least one product as described above.
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