Title:
TI-CONTAINING FERRITIC STAINLESS STEEL SHEET HAVING GOOD TOUGHNESS, AND FLANGE
Document Type and Number:
WIPO Patent Application WO/2017/163636
Kind Code:
A1
Abstract:
Provided is a Ti-containing ferritic stainless steel sheet having good toughness.
The present invention is a Ti-containing ferritic stainless steel sheet which has a chemical composition containing, in mass%, 0.003-0.030% of C, 2.0% or less of Si, 2.0% or less of Mn, 0.050% or less of P, 0.040% or less of S, 10.0-19.0% of Cr, 0.030% or less of N, 4(C + N) to 0.80% (inclusive) of Ti, 0.010-0.20% of Al, and if necessary, 1.50% or less of Mo and/or 0.0030% or less of B, with the balance made up of Fe and unavoidable impurities, and wherein the content R (mass%) in the steel of the extraction residue as recovered by an electrolytic extraction method and the contents in the steel of C and N satisfy the relational expression of formula (1).
R > 5.0C + 4.4N - 0.025 (1)
Inventors:
MITSUNAGA SEIJI (JP)
EHARA YASUHIRO (JP)
EHARA YASUHIRO (JP)
Application Number:
PCT/JP2017/004348
Publication Date:
September 28, 2017
Filing Date:
February 07, 2017
Export Citation:
Assignee:
NISSHIN STEEL CO LTD (JP)
International Classes:
C22C38/00; C22C38/38; C21D8/02
Domestic Patent References:
| WO2016129580A1 | 2016-08-18 |
Foreign References:
| JP2007224342A | 2007-09-06 | |||
| JP2010070799A | 2010-04-02 | |||
| JP2012140687A | 2012-07-26 |
Other References:
See also references of EP 3434800A4
Attorney, Agent or Firm:
KOMATSU Takashi (JP)
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