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:
Mar. 05, 2013
Filed:
Apr. 07, 2008
Shusaku Takagi, Chiba, JP;
Hidetaka Kawabe, Chiba, JP;
Kohei Hasegawa, Hiroshima, JP;
Toshihiko Ooi, Chiba, JP;
Yasuaki Okita, Chiba, JP;
Michitaka Sakurai, Hiroshima, JP;
Shusaku Takagi, Chiba, JP;
Hidetaka Kawabe, Chiba, JP;
Kohei Hasegawa, Hiroshima, JP;
Toshihiko Ooi, Chiba, JP;
Yasuaki Okita, Chiba, JP;
Michitaka Sakurai, Hiroshima, JP;
JFE Steel Corporation, , JP;
Abstract
A high tensile-strength galvanized steel sheet includes C: at least 0.05% but less than 0.12%, Si: at least 0.01% but less than 0.35%, Mn: 2.0% to 3.5%, P: 0.001% to 0.020%, S: 0.0001% to 0.0030%, Al: 0.005% to 0.1%, N: 0.0001% to 0.0060%, Cr: more than 0.5% but not more than 2.0%, Mo: 0.01% to 0.50%, Ti: 0.010% to 0.080%, Nb: 0.010% to 0.080%, and B: 0.0001% to 0.0030%, the remainder being Fe and unavoidable impurities, wherein the high tensile-strength galvanized steel sheet has a microstructure that contains 20% to 70% by volume ferrite having an average grain size of 5 μm or less. The high tensile-strength galvanized steel sheet has a tensile strength of at least 980 MPa, and excellent formability and weldability.