Title:
AL-CONTAINING FERRITIC STAINLESS STEEL AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2017/038705
Kind Code:
A1
Abstract:
Provided are an Al-containing ferritic stainless steel sheet provided with sulfidation corrosion resistance without dependence on surface treatment of coating or plating, or Al addition of 3% or more, and a method for manufacturing same. This Al-containing ferritic stainless steel is characterized in containing, in terms of mass%, C: 0.03% or less, Si: 2% or less, Mn: 2% or less, Cr: 13-21%, P: 0.05% or less, S: 0.01% or less, Al: 1.5-2.5%, Ti: 0.03-0.5%, N: 0.03% or less, Mg: 0.0005-0.01%, and the remainder being Fe and unavoidable impurities, and having a surface film with a thickness of 100 nm or less, the composition of the surface film being Al > 60 at%, Cr < 10 at%, Fe < 10 at%, 0.5 at% < Mg < 5 at%, based on the at% ratio of cations only other than C, O, and N.
Inventors:
HATANO MASAHARU (JP)
SUGEOI MITSUKI (JP)
UCHIDA TOSHIHIKO (JP)
YAMAGISHI AKIHITO (JP)
SUGEOI MITSUKI (JP)
UCHIDA TOSHIHIKO (JP)
YAMAGISHI AKIHITO (JP)
Application Number:
PCT/JP2016/075042
Publication Date:
March 09, 2017
Filing Date:
August 26, 2016
Export Citation:
Assignee:
NIPPON STEEL & SUMIKIN SST (JP)
International Classes:
C22C38/00; C21D1/76; C22C38/38; C22C38/58; C23C8/14; C25F1/06
Foreign References:
| JP2014218728A | 2014-11-20 | |||
| JPH05202449A | 1993-08-10 | |||
| JPH04224658A | 1992-08-13 | |||
| JP2013199674A | 2013-10-03 | |||
| JP2010222638A | 2010-10-07 | |||
| JP2011162863A | 2011-08-25 | |||
| JP2016030855A | 2016-03-07 |
Other References:
See also references of EP 3342895A4
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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