The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 30, 2026
Filed:
Nov. 30, 2020
Constellium Issoire, Issoire, FR;
Helene Godin, La Buisse, FR;
Erembert Nizery, Grenoble, FR;
CONSTELLIUM ROLLED PRODUCTS SINGEN GMBH & CO.KG, Singen, DE;
Abstract
The invention relates to a method for manufacturing a thin sheet made from aluminum-based alloy comprising, as % by weight, 2.2 to 2.7% Cu, 1.3 to 1.6% Li, less than 0.1% Ag, 0.2 to 0.5% Mg, 0.1 to 0.5% Mn, 0.01 to 0.15% Ti, a quantity of Zn of less than 0.3, a quantity of Fe and of Si of less than or equal to 0.1% each, and unavoidable impurities with a content of less than or equal to 0.05% by weight each and 0.15% by weight in total, the remainder aluminum, wherein optionally the hot-rolling input temperature being between 400° C. and 460° C. and the hot-rolling output temperature being less than 300° C. and the mean heating speed during the solution heat treatment is at least approximately 17° C./min between 300° C. and 400° C., aging conditions such that the yield strength in the long-transverse direction Rp0.2 is between 350 and 380 MPa.