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:
Aug. 04, 1992
Filed:
Sep. 26, 1990
Applicant:
Inventors:
Roberto J Rioja, Lower Burrell, PA (US);
James T Staley, Murrysville, PA (US);
Assignee:
Aluminum Company of America, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C22C / ;
U.S. Cl.
CPC ...
420532 ; 148417 ; 148418 ; 148439 ; 420535 ; 420539 ;
Abstract
An aluminum base alloy suitable for forming into a wrought product having improved combinations of strength and fracture toughness is disclosed. The product is comprised of 0.2 to 3.0 wt. % Li, 0.1 to 3 wt. % Mg, 0.2 to 3 wt. % Cu, 5.1 to 12 wt. % Zn, 0.5 wt. % max. Fe, 0.5 wt. % max. Si, at least one of the elements selected from the group Cr, V, Hf, Mn, Ti, Ag, In and Zr, with Cr, V, Ti and Zr in the range of 0.01 to 0.2 wt. %; Hf and Mn up to 0.6 wt. % each, Ag in the range of 0.05 to 1 wt. % and in the range of 0.01 to 0.5 wt. %, the balance aluminum and incidental impurities.