Title:
ホットスタンプ部材用鋼板およびその製造方法
Document Type and Number:
Japanese Patent JP5472531
Kind Code:
B2
Abstract:
A steel sheet for a hot stamping member contains, as a chemical composition, 0.10 mass% to 0.35 mass% of C; 0.01 mass% to 1.0 mass% of Si; 0.3 mass% to 2.3 mass% of Mn; 0.01 mass% to 0.5 mass% of Al; limited to 0.03 mass% or less ofP; limited to 0.02 mass% or less of S; limited to 0.1 mass% or less ofN; and a balance consisting of Fe and unavoidable impurities, in which a standard deviation of diameters of iron carbides which are contained in a region from a surface to a 1/4 thickness position of the steel sheet is less than or equal to 0.8 µm.
Inventors:
Hiroyuki Tanahashi
Jun Maki
Jun Maki
Application Number:
JP2013512435A
Publication Date:
April 16, 2014
Filing Date:
April 26, 2012
Export Citation:
Assignee:
Nippon Steel & Sumitomo Metal Corporation
International Classes:
C22C38/00; C21D1/18; C21D9/00; C21D9/46; C22C18/04; C22C21/02; C22C38/06; C22C38/58; C23C2/06; C23C2/12; C23C2/28; C23C2/40
Domestic Patent References:
| JP2007314817A | 2007-12-06 | |||
| JP2005344160A | 2005-12-15 | |||
| JP2005344197A | 2005-12-15 | |||
| JP2001220643A | 2001-08-14 | |||
| JPH10330876A | 1998-12-15 |
Attorney, Agent or Firm:
Masatake Shiga
Tadashi Takahashi
Sumio Tanai
Hiroshi Masui
Tomoo Katsumata
Tadashi Takahashi
Sumio Tanai
Hiroshi Masui
Tomoo Katsumata