Title:
STEEL SHEET FOR HOT STAMPING, METHOD FOR MANUFACTURING SAME, AND HOT STAMP MOLDED ARTICLE
Document Type and Number:
WIPO Patent Application WO/2016/158961
Kind Code:
A1
Abstract:
A steel sheet for hot stamping contains, in percentage by weight, C: 0.100%-0.600%, Si: 0.50%-3.00%, Mn: 1.20%-4.00%, Ti: 0.005%-0.100%, B: 0.0005%-0.100%, P: 0.100% or less, S: 0.0001%-0.0100%, Al: 0.005%-1.000%, and N: 0.100% or less, with the remainder comprising Fe and impurities. The steel sheet surface roughness is such that Rz > 2.5 μm, and the surface is coated with 50 mg/m2‒1,500 mg/m2 of oil coated thereon.
Inventors:
AZUMA MASAFUMI (JP)
SUWA YOSHIHIRO (JP)
KONDO YUSUKE (JP)
SATO KOICHI (JP)
SUWA YOSHIHIRO (JP)
KONDO YUSUKE (JP)
SATO KOICHI (JP)
Application Number:
PCT/JP2016/060145
Publication Date:
October 06, 2016
Filing Date:
March 29, 2016
Export Citation:
Assignee:
NIPPON STEEL & SUMITOMO METAL CORP (JP)
International Classes:
B21D22/20; B21D24/00; C21D9/46; C22C38/00; C22C38/14; C22C38/58; C23F11/00; C23G1/08
Domestic Patent References:
| WO2012053636A1 | 2012-04-26 | |||
| WO2011158818A1 | 2011-12-22 |
Foreign References:
| JP2008240046A | 2008-10-09 | |||
| JPH0976004A | 1997-03-25 | |||
| JP2014159624A | 2014-09-04 | |||
| JP2010174302A | 2010-08-12 |
Other References:
See also references of EP 3278895A4
Attorney, Agent or Firm:
KOKUBUN, Takayoshi (JP)
Takayoshi Kokubu (JP)
Takayoshi Kokubu (JP)
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