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.

Date of Patent:
Jun. 19, 2018

Filed:

Apr. 26, 2013
Applicant:

Rio Tinto Alcan International Limited, Montréal, CA;

Inventors:

Nicholas Charles Parson, Kingston, CA;

Raynald Guay, Jonquiére, CA;

Alexandre Maltais, Chicoutimi, CA;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C22C 21/00 (2006.01); C22F 1/04 (2006.01); B21C 23/00 (2006.01); F28F 21/08 (2006.01); C21D 1/28 (2006.01); C21D 9/08 (2006.01);
U.S. Cl.
CPC ...
C22C 21/00 (2013.01); B21C 23/002 (2013.01); C21D 1/28 (2013.01); C21D 9/08 (2013.01); C22F 1/04 (2013.01); F28F 21/084 (2013.01); F28F 2255/16 (2013.01);
Abstract

An aluminum alloy having an excellent combination of strength, extrudability and corrosion resistance may include in weight percent, about 0.01% or less copper; about 0.15% or less iron; about 0.60 to about 0.90% manganese, where manganese and iron are present in the alloy in a Mn:Fe ratio of at least about 6.6; about 0.02% or less nickel; about 0.08 to about 0.30% silicon; about 0.10 to about 0.20% titanium; and about 0.05 to about 0.20% zinc; the balance being aluminum and unavoidable impurities. Extruded articles and other articles may be formed using the alloy. Methods of forming such articles may include homogenizing a billet of the alloy prior to forming the article.


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