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:
May. 07, 2019
Filed:
Dec. 15, 2011
Toshiki Nonaka, Tokyo, JP;
Toshio Ogawa, Tokyo, JP;
Nobuhiro Fujita, Tokyo, JP;
NIPPON STEEL & SUMITOMO METAL CORPORATION, Tokyo, JP;
Abstract
A hot-dip galvanized steel sheet includes a steel sheet and a hot-dip galvanized layer arranged on the steel sheet, in which the Si content and the Al content by mass % of components of the steel sheet satisfy a relationship 0.5<Si+Al<1.0, and a metallographic structure of the steel sheet satisfies a relationship of {(n)×d}/{(n)×d}×ln(H/H)<0.3 when the nis the number of a MnS of a surface portion of the steel sheet, the dμm is an average equivalent circle diameter of the MnS in the surface portion of the steel sheet, the HGPa is a hardness of a martensite of the surface portion of the steel sheet, the nis the number of the MnS of a center portion of the steel sheet, the dμm is an average equivalent circle diameter of the MnS in the center portion of the steel sheet, and the HGPa is the hardness of the martensite of the center portion of the steel sheet.