Title:
STEEL SHEET FOR HOT STAMPING AND HOT-STAMPED MEMBER
Document Type and Number:
WIPO Patent Application WO/2022/215636
Kind Code:
A1
Abstract:
This steel sheet (10) for hot stamping sequentially comprises, in the following order: a base steel sheet (1); an Al-Si alloy plating layer (2) that has an Al content of 75% by mass or more and an Si content of 3 to 20% by mass, with the total of the Al content and the Si content being 95% by mass or more; an Al oxide coating film (3) that has a thickness of 0 to 20 nm; and a surficial plating layer (4) that has a total of the Cr content, the Cu content and the Ni content of more than 90% by mass and an Ni content of 50% by mass or less, or alternatively, a total of the Cr content, the Cu content and the Ni content of more than 90% by mass and an Ni content of 90% by mass or less, with the Cr content being 0.08 times the Ni content or less. The thickness of the Al-Si alloy plating layer (2) is 8 to 50 μm; and the thickness of the surficial plating layer (4) is 2,500 nm or less.
Inventors:
KOBAYASHI AKINOBU (JP)
SAKIYAMA YUJI (JP)
HARANO TAKAYUKI (JP)
SAKIYAMA YUJI (JP)
HARANO TAKAYUKI (JP)
Application Number:
PCT/JP2022/016321
Publication Date:
October 13, 2022
Filing Date:
March 30, 2022
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
C22C38/00; C22C38/58; C23C2/12; C23C28/00; C23C28/02; C25D5/30; C21D1/18; C21D9/00; C21D9/48
Foreign References:
| JP2020125510A | 2020-08-20 | |||
| JP2014118628A | 2014-06-30 | |||
| JP2018513909A | 2018-05-31 | |||
| JPH04246182A | 1992-09-02 | |||
| JPH0860326A | 1996-03-05 |
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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