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. 26, 2020
Filed:
Mar. 02, 2016
Jfe Steel Corporation, Chiyoda-ku, Tokyo, JP;
Toshihiko Ooi, Tokyo, JP;
Yohei Sato, Tokyo, JP;
Yoichi Tobiyama, Tokyo, JP;
Toshiyuki Okuma, Tokyo, JP;
Akihiko Furuta, Tokyo, JP;
Masahiro Yoshida, Tokyo, JP;
Yoshitsugu Suzuki, Tokyo, JP;
Satoru Ando, Tokyo, JP;
Akira Matsuzaki, Tokyo, JP;
JFE STEEL CORPORATION, Chiyoda-ku, Tokyo, JP;
Abstract
Provided is a hot-dip Al—Zn—Mg—Si coated steel sheet having good corrosion resistance in flat parts and edge parts, and also having excellent worked part corrosion resistance. The hot-dip Al—Zn—Mg—Si coated steel sheet includes a base steel sheet and a hot-dip coating on a surface of the base steel sheet. The hot-dip coating includes an interfacial alloy layer present at an interface with the base steel sheet and a main layer present on the interfacial alloy layer, and contains from 25 mass % to 80 mass % of Al, from greater than 0.6 mass % to 15 mass % of Si, and from greater than 0.1 mass % to 25 mass % of Mg. The Mg content and Si content in the hot-dip coating satisfy formula (1):/(−0.6)>1.7  (1)where Mrepresents the Mg content (mass %) and Mrepresents the Si content (mass %).