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Title:
FERRITE STAINLESS STEEL SHEET FOR BELLOWS STOCK PIPE
Document Type and Number:
WIPO Patent Application WO/2006/132163
Kind Code:
A1
Abstract:
A ferrite stainless steel sheet for bellows stock pipe that excels in workability. In particular, there is provided a ferrite stainless steel sheet for bellows stock pipe characterized by containing 10 to 25 mass% of Cr, having a yield stress of 300 to 450 MPa and exhibiting a product of yield stress multiplied by uniform elongation of 5200 MPa·% or greater. In preferred form, there is provided a ferrite stainless steel sheet for bellows stock pipe whose average crystal grain diameter (D) is 35 µm or less, or whose surface roughness in terms of Ra is 0.40 µm or less.

Inventors:
Ozaki, Yoshihiro c/o Intellectual Property Department JFE Steel Corporation (2-3 Uchisaiwai-cho 2-chom, Chiyoda-ku Tokyo 11, 10000, JP)
Kato, Yasushi c/o Intellectual Property Department JFE Steel Corporation (2-3 Uchisaiwai-cho 2-chom, Chiyoda-ku Tokyo 11, 10000, JP)
Iguchi, Takaaki c/o Intellectual Property Department JFE Steel Corporation (2-3 Uchisaiwai-cho 2-chom, Chiyoda-ku Tokyo 11, 10000, JP)
Application Number:
PCT/JP2006/311156
Publication Date:
December 14, 2006
Filing Date:
May 29, 2006
Export Citation:
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Assignee:
JFE STEEL CORPORATION (2-3 Uchisaiwai-cho 2-chome, Chiyoda-ku, Tokyo 11, 10000, JP)
Ozaki, Yoshihiro c/o Intellectual Property Department JFE Steel Corporation (2-3 Uchisaiwai-cho 2-chom, Chiyoda-ku Tokyo 11, 10000, JP)
Kato, Yasushi c/o Intellectual Property Department JFE Steel Corporation (2-3 Uchisaiwai-cho 2-chom, Chiyoda-ku Tokyo 11, 10000, JP)
Iguchi, Takaaki c/o Intellectual Property Department JFE Steel Corporation (2-3 Uchisaiwai-cho 2-chom, Chiyoda-ku Tokyo 11, 10000, JP)
International Classes:
C22C38/00; C22C38/18; F16F1/02; F16J3/04; C21D9/46; C22C38/50
Foreign References:
JP2001262234A2001-09-26
JP2002212683A2002-07-31
JPH08176750A1996-07-09
JPH09125208A1997-05-13
Other References:
See also references of EP 1889936A4
Attorney, Agent or Firm:
Ochiai, Kenichiro c/o Patent, Application Dept (JFE TECHNO-RESEARCH CORPORATION 7th Floor, Yanagiya Building, 1-10, Nihonbashi 2-chom, Chuo-ku Tokyo, 103-0027, JP)
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