Title:
ZINC-PLATED STEEL SHEET FOR HOT PRESS MOLDING
Document Type and Number:
WIPO Patent Application WO/2014/024825
Kind Code:
A1
Abstract:
A zinc-plated steel sheet for hot press molding, which comprises a steel sheet and a zinc plating film formed on the surface of the steel sheet, wherein the steel sheet has a chemical composition containing, in mass%, 0.02 to 0.58% of C, 0.5 to 3.0% of Mn, 0.005 to 1.0% of sol.Al, optional specific components, 2.0% or less of Si, 0.03% or less of P, 0.004% or less of S, 0.01% or less of N, and a remainder made up by Fe and impurities, and wherein the Mn content in a portion of the steel sheet which lays between the interface between the steel sheet and the plating and a region corresponding to the depth of 5 μm in the steel sheet is 0.3 mass% or more, and the zinc plating film is formed in a plating amount of 40 to 110 g/m2, has an Al content of 150 mg/m2 or more and an Al concentration of 0.5 mass% or less. The zinc-plated steel sheet can be heated to 700˚C or higher and then subjected to hot press molding.
Inventors:
TAKAHASHI HIROYUKI (JP)
IMAI KAZUHITO (JP)
NISHIBATA HITOMI (JP)
IMAI KAZUHITO (JP)
NISHIBATA HITOMI (JP)
Application Number:
PCT/JP2013/071118
Publication Date:
February 13, 2014
Filing Date:
August 05, 2013
Export Citation:
Assignee:
NIPPON STEEL & SUMITOMO METAL CORP (JP)
International Classes:
C23C2/06; C21D1/18; C21D9/00; C21D9/46; C22C18/00; C22C38/00; C22C38/58; C23C2/28
Foreign References:
| JP2011256404A | 2011-12-22 | |||
| JP2012102359A | 2012-05-31 | |||
| JP2003073774A | 2003-03-12 | |||
| JP2001353548A | 2001-12-25 | |||
| JP2005048254A | 2005-02-24 |
Other References:
See also references of EP 2883976A4
Attorney, Agent or Firm:
HAGIWARA, Yasushi et al. (JP)
Yasushi Hagiwara (JP)
Yasushi Hagiwara (JP)
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