Invention Grant
- Patent Title: Heat treated steel product having high strength and excellent chemical conversion coating ability and method of production of same
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Application No.: US15517720Application Date: 2015-10-05
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Publication No.: US10370735B2Publication Date: 2019-08-06
- Inventor: Hideki Matsuda , Koji Akioka , Kazuo Uematsu
- 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
- Priority: JP2014-207597 20141008
- International Application: PCT/JP2015/078225 WO 20151005
- International Announcement: WO2016/056514 WO 20160414
- Main IPC: B21C37/00
- IPC: B21C37/00 ; C21D9/08 ; B21D7/16 ; C21D1/74 ; C21D1/18 ; C22C38/00 ; C22C38/32 ; B21B1/22 ; C22C38/02 ; C22C38/04 ; C22C38/06 ; C22C38/26 ; C22C38/28 ; C23C22/12
Abstract:
A steel product bent by heating to 600° C. or more, specifically a heat treated steel product having high strength and excellent chemical conversion coating ability which has scale with FeO content of 90% or more, having a thickness of 1 μm or less on the surface.
Public/Granted literature
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