Invention Grant
- Patent Title: Al-plated steel sheet used for hot pressing and method for manufacturing Al-plated steel sheet used for hot pressing
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Application No.: US15103152Application Date: 2014-12-10
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Publication No.: US09970116B2Publication Date: 2018-05-15
- Inventor: Soshi Fujita , Shintaro Yamanaka , Jun Maki , Hiroki Fujimoto , Hatsuhiko Oikawa , Hideaki Irikawa
- Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
- Applicant Address: JP Tokyo
- Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
- Current Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP2013-257106 20131212
- International Application: PCT/JP2014/082708 WO 20141210
- International Announcement: WO2015/087921 WO 20150618
- Main IPC: B32B15/04
- IPC: B32B15/04 ; C23C22/66 ; C23C2/12 ; C23C2/28 ; C23C2/40 ; C22C21/02 ; C22C38/00 ; C22C38/38 ; B21D22/02 ; B21D35/00 ; C22C21/00 ; B32B15/01 ; C22C38/02 ; C22C38/04 ; C22C38/06 ; C22C38/12 ; C22C38/14 ; C22C38/18 ; C23C2/20

Abstract:
Provided is an Al-plated steel sheet used for hot pressing that has excellent lubricity in hot state, corrosion resistance after paint coating, and spot weldability. An Al-plated steel sheet used for hot pressing includes: a steel sheet; an Al plating layer formed on one surface or both surfaces of the steel sheet; and a surface coating layer formed on the Al plating layer. The surface coating layer contains a zinc compound, and the zinc compound is deposited on the Al-plated steel sheet in an amount of equal to or greater than 0.3 g/m2 and equal to or less than 1.5 g/m2 as an amount of metallic zinc per one surface, and a zinc deposition amount in any continuous 1 mm2 region is 1.5 g/m2 or less.
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