Title:
STEEL HAVING EXCELLENT MACHINABILITY FOR MECHANICAL STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2012/008405
Kind Code:
A1
Abstract:
Provided is a steel for a mechanical structure, which comprises, by mass%, 0.40% to less than 0.75% of C, 0.01% to 3.0% of Si, 0.1% to 1.8% of Mn, 0.001% to 0.1% of S, greater than 0.1% to 1.0% of Al, 0.001% to 0.02% of N, no more than 0.05% of P, and residual Fe and inevitable impurities as the balance, and which satisfies 139.38≤214×[C]+30.6×[Si]+42.8×[Mn]-14.7×[Al]≤177 and 0.72≤[C]+1/7×[Si]+1/5×[Mn]<1.539.
Inventors:
AISO TOSHIHARU (JP)
YOSHIDA SUGURU (JP)
KUBOTA MANABU (JP)
MIYANISHI KEI (JP)
KOZAWA SHUJI (JP)
YOSHIDA SUGURU (JP)
KUBOTA MANABU (JP)
MIYANISHI KEI (JP)
KOZAWA SHUJI (JP)
Application Number:
PCT/JP2011/065782
Publication Date:
January 19, 2012
Filing Date:
July 11, 2011
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
AISO TOSHIHARU (JP)
YOSHIDA SUGURU (JP)
KUBOTA MANABU (JP)
MIYANISHI KEI (JP)
KOZAWA SHUJI (JP)
AISO TOSHIHARU (JP)
YOSHIDA SUGURU (JP)
KUBOTA MANABU (JP)
MIYANISHI KEI (JP)
KOZAWA SHUJI (JP)
International Classes:
C22C38/60; C22C38/00
Domestic Patent References:
| WO2010116670A1 | 2010-10-14 |
Foreign References:
| JPH0820841A | 1996-01-23 | |||
| JP2009228049A | 2009-10-08 | |||
| JP2009263749A | 2009-11-12 | |||
| JP2010024549A | 2010-02-04 |
Other References:
See also references of EP 2594654A4
Attorney, Agent or Firm:
SHIGA Masatake et al. (JP)
Masatake Shiga (JP)
Masatake Shiga (JP)
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Claims: