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Patent Searching and Data


Title:
STEEL PLATE FOR HOT STAMPING
Document Type and Number:
WIPO Patent Application WO/2019/188622
Kind Code:
A1
Abstract:
A steel plate for hot stamping according to the present invention contains, in terms of % by mass, 0.25% to 0.4% C, 1.05% to 1.4% Si, 0% to 1.4% Mn, 0.6% to 3.0% Cr, 0% to 0.03% P, 0% to 0.02% S, 0.01% to 1% Al, 0% to 0.01% N, 0.0005% to 0.005% B, and 0.005% to 0.1% Ti, the remainder being iron and unavoidable impurities. By satisfying the relational expression [C] + 2/9[Si] + 7/9[Mn] + 8/9[Cr] – 7/4 > 0, this steel plate for hot stamping has excellent hardness stability in addition to a balance between strength and toughness.

Inventors:
ARAKI, Haruka
HAMAMOTO, Sae
ASAI, Tatsuya
Application Number:
JP2019/011606
Publication Date:
October 03, 2019
Filing Date:
March 19, 2019
Export Citation:
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Assignee:
KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.) (2-4 Wakinohama-Kaigandori 2-chome, Chuo-ku Kobe-sh, Hyogo 85, 〒6518585, JP)
International Classes:
C22C38/00; C22C38/32; C22C38/54; C21D1/18; C21D9/00; C21D9/46
Domestic Patent References:
WO2016158961A12016-10-06
Foreign References:
JP2017155329A2017-09-07
JP2014156653A2014-08-28
JP2016003389A2016-01-12
Attorney, Agent or Firm:
KOTANI, Etsuji et al. (Osaka Nakanoshima Building 2nd Floor, 2-2 Nakanoshima 2-chome, Kita-ku, Osaka-sh, Osaka 05, 〒5300005, JP)
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