Invention Grant
- Patent Title: Hot-pressed steel sheet member, method of manufacturing the same, and steel sheet for hot pressing
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Application No.: US16267973Application Date: 2019-02-05
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Publication No.: US10711322B2Publication Date: 2020-07-14
- Inventor: Koutarou Hayashi , Toshinobu Nishibata
- Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
- Applicant Address: JP Tokyo
- Assignee: NIPPON STEEL CORPORATION
- Current Assignee: NIPPON STEEL CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Main IPC: C21D9/46
- IPC: C21D9/46 ; C22C38/00 ; C22C38/02 ; C22C38/04 ; C22C38/06 ; C22C38/08 ; C22C38/12 ; C22C38/14 ; C22C38/16 ; C22C38/18 ; C21D7/13 ; C21D8/02 ; C21D1/673 ; C22C38/38 ; C21D1/18
Abstract:
A steel sheet for hot pressing includes: a specific chemical composition; and a steel structure comprising ferrite and cementite and represented, in area %: a total area ratio of bainite and martensite: 0% to 10%; and an area ratio of cementite: 1% or more; and a concentration of Mn in the cementite is 5% or more.
Public/Granted literature
- US20190169707A1 HOT-PRESSED STEEL SHEET MEMBER, METHOD OF MANUFACTURING THE SAME, AND STEEL SHEET FOR HOT PRESSING Public/Granted day:2019-06-06
Information query
