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:
Apr. 23, 2013
Filed:
Jul. 30, 2004
Pizhi Zhao, Shizuoka, JP;
Toshiya Anami, Shizuoka, JP;
Ichiro Okamoto, Shizuoka, JP;
Hitoshi Kazama, Wako, JP;
Kunihiro Yasunaga, Wako, JP;
Noboru Hayashi, Wako, JP;
Kevin Gatenby, Kingston, CA;
Mark Gallerneault, Kingston, CA;
Simon Barker, Kingston, CA;
Pizhi Zhao, Shizuoka, JP;
Toshiya Anami, Shizuoka, JP;
Ichiro Okamoto, Shizuoka, JP;
Hitoshi Kazama, Wako, JP;
Kunihiro Yasunaga, Wako, JP;
Noboru Hayashi, Wako, JP;
Kevin Gatenby, Kingston, CA;
Mark Gallerneault, Kingston, CA;
Simon Barker, Kingston, CA;
Nippon Light Metal Co., Ltd, Shinagawa-Ku, Tokyo, JP;
Novelis Inc., Toronto, Ontario, CA;
Honda Motor Co., Ltd., Minato-Ku, Tokyo, JP;
Abstract
An aluminum alloy sheet having excellent press formability and stress corrosion cracking resistance, comprises 3.3 to 3.6 percent by weight of Mg and 0.1 to 0.2 percent by weight of Mn, furthermore, 0.05 to 0.3 percent by weight of Fe and 0.05 to 0.15 percent by weight of Si, and the remainder comprises Al and incidental impurities, wherein the sizes of intermetallic compounds is 5 μm or less, the recrystallized grain size is 15 μm or less in the region at a depth of 10 to 30 μm below the sheet surface, and the surface roughness is Ra 0.2 to 0.7 μm.