Title:
STEEL FOR CASE-HARDENING TREATMENT, CASE-HARDENED STEEL COMPONENT, AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2011/114836
Kind Code:
A1
Abstract:
The disclosed steel for a case hardening treatment, which is subjected to a carburization treatment in the temperature range of 800-900°C, has a chemical composition that includes, in terms of mass%, 0.10-0.60% C, 0.01-2.50% Si, 0.20-2.00% Mn, 0.0001-0.10% S, 2.00-5.00% Cr, 0.001-0.50% Al, 0.0020-0.020% N, 0.001-0.050% P and 0.0001-0.0030% O, with the remainder being Fe and unavoidable impurities, wherein the total content of Cr, Si and Mn in terms of mass% satisfies the equation 0 ≤ Cr + Si + Mn ≤ 8.0.
Inventors:
KUBOTA MANABU (JP)
OCHI TATSURO (JP)
OCHI TATSURO (JP)
Application Number:
PCT/JP2011/053517
Publication Date:
September 22, 2011
Filing Date:
February 18, 2011
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
KUBOTA MANABU (JP)
OCHI TATSURO (JP)
KUBOTA MANABU (JP)
OCHI TATSURO (JP)
International Classes:
C22C38/00; C21D1/06; C21D9/28; C21D9/32; C21D9/40; C22C38/60; C23C8/22; C23C8/32
Foreign References:
| JP3033349B2 | 2000-04-17 | |||
| JPH10176219A | 1998-06-30 | |||
| JP2002339054A | 2002-11-27 | |||
| JP2005273759A | 2005-10-06 |
Other References:
See also references of EP 2514847A4
Attorney, Agent or Firm:
SHIGA Masatake et al. (JP)
Masatake Shiga (JP)
Masatake Shiga (JP)
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Claims: