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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.:

US 11884989 B1

PDFFull Text
Date of Patent:
Jan. 30, 2024

Filed:

May. 13, 2020

Hot-stamping formed body

Applicant:

Nippon Steel Corporation, Tokyo, JP;

Inventors:

Daisuke Maeda, Tokyo, JP;

Yuri Toda, Tokyo, JP;

Tomohito Tanaka, Tokyo, JP;

Kazuo Hikida, Tokyo, JP;

Assignee:

NIPPON STEEL CORPORATION, Tokyo, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Humera N Sheikh

Assistant Examiner:

Kim S Horger

Int. Cl.
CPC ...
B32B 15/01 (2006.01); C21D 9/48 (2006.01); C21D 1/18 (2006.01); C21D 6/00 (2006.01); C21D 8/04 (2006.01); C22C 18/00 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/06 (2006.01); C22C 38/26 (2006.01); C22C 38/28 (2006.01); C22C 38/32 (2006.01); C22C 38/38 (2006.01);
U.S. Cl.
CPC ...
C21D 9/48 (2013.01); B32B 15/013 (2013.01); C21D 1/18 (2013.01); C21D 6/002 (2013.01); C21D 6/005 (2013.01); C21D 6/008 (2013.01); C21D 8/0405 (2013.01); C21D 8/0426 (2013.01); C21D 8/0436 (2013.01); C21D 8/0463 (2013.01); C22C 18/00 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/005 (2013.01); C22C 38/02 (2013.01); C22C 38/06 (2013.01); C22C 38/26 (2013.01); C22C 38/28 (2013.01); C22C 38/32 (2013.01); C22C 38/38 (2013.01); C21D 2211/001 (2013.01); C21D 2211/008 (2013.01);
Abstract

A hot-stamping formed body includes: a steel sheet having a predetermined chemical composition; and a plating layer provided on a surface of the steel sheet, the plating layer having an adhesion amount of 10 g/mto 90 g/mand a Ni content of 10 mass % to 25 mass %, and containing a remainder consisting of Zn and impurities. The hot-stamping formed body includes, in a surface layer region of the steel sheet, an average grain size of prior austenite grains to 10.0 μm or less, a Ni concentration per unit area at grain boundaries having an average crystal orientation difference of 15° or more is 1.5 mass %/μmor more.

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