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.:

US 8940406 B1

PDF
Full Text
Expired
Date of Patent:
Jan. 27, 2015

Filed:

Aug. 11, 2009
Applicants:

Juergen Timm, Steisslingen, DE;

Corrado Bassi, Veyras, CH;

Inventors:

Juergen Timm, Steisslingen, DE;

Corrado Bassi, Veyras, CH;

Assignee:

Novelis Inc., Atlanta, GA (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B 15/01 (2006.01); B32B 15/20 (2006.01); C22C 21/02 (2006.01); C22C 21/08 (2006.01);
U.S. Cl.
CPC ...
B32B 15/016 (2013.01); C22C 21/02 (2013.01); C22C 21/08 (2013.01);
Abstract

The present invention relates to an automotive clad sheet product comprising a core layer and at least one clad layer wherein the core comprises an alloy of the following composition in weight %: Mg 0.45-0.8, Si 0.45-0.7, Cu 0.05-0.25, Mn 0.05-0.2, Fe up to 0.35, other elements (or impurities) <0.05 each and <0.15 in total, balance aluminum; and the at least one clad layer comprises an alloy of the following composition in weight %: Mg 0.3-0.7, Si 0.3-0.7, Mn up to 0.15, Fe up to 0.35, other elements (impurities) <0.05 each and <0.15 in total, balance aluminum. The clad automotive sheet product provides excellent hemmabtlity which does not substantially change over time and yet also provides a good age-hardening response after bake hardening.


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