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:
Nov. 26, 2013
Filed:
Jul. 31, 2006
Kazuhiko Honda, Chiba, JP;
Tetsuo Nishiyama, Chiba, JP;
Yoshihiro Suemune, Chiba, JP;
Takeo Itoh, Chiba, JP;
Koki Tanaka, Chiba, JP;
Yoichi Ikematsu, Chiba, JP;
Kazuhiko Honda, Chiba, JP;
Tetsuo Nishiyama, Chiba, JP;
Yoshihiro Suemune, Chiba, JP;
Takeo Itoh, Chiba, JP;
Koki Tanaka, Chiba, JP;
Yoichi Ikematsu, Chiba, JP;
Nippon Steel & Sumitomo Metal Corporation, Tokyo, JP;
Abstract
Hot dip galvanized steel sheet excellent in shapeability and plateability comprised of high strength steel sheet according to the present invention can be provided containing, by mass % about, C: 0.05 to 0.25%, Si: 0.3 to 2.5%, Mn: 1.5 to 2.8%, P: 0.03% or less, S: 0.02% or less, Al: 0.005 to 0.5%, N: 0.0060% or less and the balance of Fe and unavoidable impurities. The exemplary steel sheet can have thereon a galvanized layer containing, e.g., about Al: 0.05 to 10 mass % and Fe: 0.05 to 3 mass % and the balance of Zn and unavoidable impurities. Such exemplary hot dip galvanized steel sheet can have oxides containing Si in an average content of about 0.6 to 10 mass % at the crystal grain boundaries and in the crystal grains at the sheet steel side 5 μm or less from the interface between the high strength steel sheet and the plating layer and by the presence of Fe—Zn alloy with an average grain size of about 0.5 to 3 μm at the plating side.