- 专利标题: HOT STAMPED STEEL
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申请号: US17632553申请日: 2020-08-28
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公开(公告)号: US20220275481A1公开(公告)日: 2022-09-01
- 发明人: Takuya MITSUNOBU , Kohei TOKUDA , Takehiro TAKAHASHI , Hiroshi TAKEBAYASHI
- 申请人: NIPPON STEEL CORPORATION
- 申请人地址: JP Tokyo
- 专利权人: NIPPON STEEL CORPORATION
- 当前专利权人: NIPPON STEEL CORPORATION
- 当前专利权人地址: JP Tokyo
- 优先权: JP2019-157205 20190829
- 国际申请: PCT/JP2020/032643 WO 20200828
- 主分类号: C22C18/00
- IPC分类号: C22C18/00 ; C22C30/06 ; C22C30/02 ; C23C2/06 ; C23C2/20 ; C23C2/28 ; C23C2/40 ; C25D11/36
摘要:
A hot stamped steel includes a base material that is formed of steel, a plated layer that is formed on a surface of the base material, and a phosphate coating that is formed on a surface of the plated layer; chemical composition of the plated layer contains 20.00 to 45.00 mass % of Al, 10.00 to 45.00 mass % of Fe, 4.50 to 15.00 mass % of Mg, 0.10 to 3.00 mass % of Si, 0.05 to 3.00 mass % of Ca, 0 to 0.50 mass % of Sb, 0 to 0.50 mass % of Pb, 0 to 1.00 mass % of Cu, 0 to 1.00 mass % of Sn, 0 to 1.00 mass % of Ti, 0 to 0.50 mass % of Sr, 0 to 1.00 mass % of Cr, 0 to 1.00 mass % of Ni, and 0 to 1.00 mass % of Mn with a remainder of Zn and impurities; the phosphate coating consists of zinc phosphate crystals containing 5.0 to 50.0 mass % of Mg and 0.5 to 5.0 mass % of Ca; and the adhesion amount of the phosphate coating per one surface is in a range of 0.1 to 10.0 g/m2.