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:
Jul. 28, 2020
Filed:
Jan. 31, 2018
Universal Alloy Corporation, Canton, GA (US);
Victor B. Dangerfield, Canton, GA (US);
Justin D. Lamb, Canton, GA (US);
Universal Alloy Corporation, Canton, GA (US);
Abstract
An improved aluminum based alloy containing lithium is disclosed. The alloy may be provided as extruded aluminum-copper-lithium products having improved combinations of strength, fracture toughness, corrosion resistance and relatively low density. The extrusion alloy may include from 2.6 to 3.0 weight percent Cu, from 1.4 to 1.75 weight percent Li, from 0.0 to 0.25 weight percent Mn, from 0.10 to 0.45 weight percent Mg, from 0.05 to 0.15 weight percent Zr, from 0.00-0.10 weight percent Ti, from 0.10 weight percent maximum Si, from 0.12 weight percent maximum Fe, from 0.20 weight percent maximum Zn, and the balance Al and incidental impurities. The alloy should also be essentially Ag-free with Ag only being an accidental impurity in levels less than 0.05 weight percent maximum. In certain embodiments, the aluminum-copper-lithium alloys may be provided in the form of extruded products having improved combinations of strength and fracture toughness.