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:
Sep. 09, 2008
Filed:
Sep. 02, 2005
David A. Lukasak, Lafayette, IN (US);
Thomas J. Klemp, Massena, NY (US);
David A. Lukasak, Lafayette, IN (US);
Thomas J. Klemp, Massena, NY (US);
Alcoa, Inc., Pittsburgh, PA (US);
Abstract
A method of press quenching a 6020 aluminum alloy comprising the steps of providing an ingot or billet of 6020 aluminum alloy consisting essentially of about 0.5 to about 0.6% silicon, about 0.7 to about 0.8% magnesium, about 0.55 to about 0.65% copper, about 0.35 to about 0.45% iron, about 0.01 to about 0.04% manganese, about 1.05 to about 1.15% tin, and about 0.04 to about 0.06% chromium; homogenizing the billet, cooling the billet, reheating the billet, extruding the billet, quenching the extrusion, and artificially aging the extrusion. The alloy has enhanced productivity, strength, and machinability and can be used as a direct replacement for lead containing alloy 6262 T-6.