Title:
LOW-SPECIFIC GRAVITY STEEL FOR FORGING HAVING EXCELLENT MACHINABILITY
Document Type and Number:
WIPO Patent Application WO/2010/119911
Kind Code:
A1
Abstract:
Disclosed is a low-specific gravity steel for forging, which exhibits high strength and excellent machinability when molded by hot-forging immediately followed by controlled cooling, and has a lower specific gravity than usual steel materials for forging, comprising 0.05-0.50% of C, 0.01-1.50% of Si, 3.0-7.0% of Mn, 0.001-0.050% of P, 0.020-0.200% of S, 3.0-6.0% of Al, 0.01-1.00% of Cr, 0.0040-0.0200% of N, and the balance of Fe and unavoidable impurities.
Inventors:
YOSHIDA SUGURU (JP)
TAKADA HIROMASA (JP)
TAKADA HIROMASA (JP)
Application Number:
PCT/JP2010/056721
Publication Date:
October 21, 2010
Filing Date:
April 08, 2010
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
YOSHIDA SUGURU (JP)
TAKADA HIROMASA (JP)
YOSHIDA SUGURU (JP)
TAKADA HIROMASA (JP)
International Classes:
C22C38/00; C22C38/60
Foreign References:
| JP2004068098A | 2004-03-04 | |||
| JP2006348321A | 2006-12-28 | |||
| JP2005015909A | 2005-01-20 | |||
| JP2005120399A | 2005-05-12 | |||
| JP2005325388A | 2005-11-24 | |||
| JPS57181363A | 1982-11-08 |
Other References:
See also references of EP 2420585A4
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
Atsushi Aoki (JP)
Atsushi Aoki (JP)
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