Title:
METHOD FOR PRODUCING AUSTENITIC STAINLESS STEEL AND AUSTENITIC STAINLESS STEEL MATERIAL
Document Type and Number:
WIPO Patent Application WO/2012/176802
Kind Code:
A1
Abstract:
Provided is austenitic stainless steel having high-temperature strength and excellent nitric acid corrosion resistance. The austenitic stainless steel of this embodiment contains, by mass%, C: 0.050% or less, Si: 0.01-1.00%, Mn: 1.75-2.50%, P: 0.050% or less, S: 0.0100% or less, Ni: 20.00-24.00%, Cr: 23.00-27.00%, Mo: 1.80-3.20%, and N: 0.110-0.180%; the remainder comprises Fe and impurities; the grain size number of the crystal grains is 6.0 or higher based on JIS G0551(2005); and the area ratio of the σ phase is 0.1% or lower.
Inventors:
UEYAMA MASAKI (JP)
Application Number:
PCT/JP2012/065733
Publication Date:
December 27, 2012
Filing Date:
June 20, 2012
Export Citation:
Assignee:
SUMITOMO METAL IND (JP)
UEYAMA MASAKI (JP)
UEYAMA MASAKI (JP)
International Classes:
C22C38/00; C21D6/00; C22C30/00; C22C38/58
Foreign References:
| JPH09184013A | 1997-07-15 | |||
| JP2009068079A | 2009-04-02 | |||
| JP2008019479A | 2008-01-31 | |||
| JPS60224764A | 1985-11-09 | |||
| JP2004339569A | 2004-12-02 | |||
| JP2005023343A | 2005-01-27 | |||
| JPH1088289A | 1998-04-07 | |||
| JPH06256911A | 1994-09-13 | |||
| JP2005509751A | 2005-04-14 |
Other References:
See also references of EP 2725113A4
Attorney, Agent or Firm:
UEBA Hidetoshi et al. (JP)
Hidetoshi Ueha (JP)
Hidetoshi Ueha (JP)
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Claims:
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