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:
Jan. 02, 2007
Filed:
Jan. 29, 2003
Applicants:
Kazuhisa Kashiwazaki, Tokyo, JP;
Ryo Shoji, Tokyo, JP;
Hisashi Tamura, Tokyo, JP;
Inventors:
Assignee:
Furukawa-Sky Aluminum Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C22C 21/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An aluminum alloy pipe, which is composed of an aluminum alloy containing 2.0% (% by mass, the same hereinafter) to 5.0% of Mg, 0.20% or less of Si, 0.30% or less of Fe, 0.8% or less (including 0%) of Mn, 0.35% or less (including 0%) of Cr, and 0.2% or less (including 0%) of Ti, with the balance being Al and inevitable impurities, wherein the aluminum alloy pipe has a 0.2% yield strength of 60 MPa or more and 160 MPa or less and an average crystal grain diameter of 150 μm or less, and wherein the aluminum alloy pipe has multistage formability.