Title:
水素ガス用オーステナイトステンレス鋼とその製造方法
Document Type and Number:
Japanese Patent JP4539559
Kind Code:
B2
Abstract:
An austenitic stainless steel for a hydrogen gas, which has a chemical composition, in mass %, that C: 0.10 % or less, Si: 1.0 % or less, Mn: 0.01 to 30 %, P: 0.040 % or less, S: 0.01 % or less, Cr: 15 to 30 %, Ni: 5.0 to 30 %, Al: 0.10 % or less, N: 0.001 to 0.30 % and the balance: Fe and inevitable impurities, wherein an X-ray (111) integration intensity of a cross section along the direction rectangular to the working direction is five times that in a random direction or less, and the X-ray integration intensity ratio of a cross section along the working direction satisfies I(220)/I(111) ¤10. The austenitic stainless steel may further comprises, in addition to the above chemical composition, at least one type selected from the following groups: (1) Mo and W, (2) V, Nb, Ta, Ti, Zr and Hf, (3) B, (4) Cu and Co, (5) Mg, Ca, La, Ce, Y, Sm, Pr and Nd, in a specific amount. The stainless steel has a high strength and can be used in an atmosphere of a high pressure hydrogen gas having 70 MPa or more.
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Inventors:
Junyuki Senba
Masaaki Igarashi
Tomohiko Omura
Mitsuo Miyahara
Kazuhiro Ogawa
Masaaki Igarashi
Tomohiko Omura
Mitsuo Miyahara
Kazuhiro Ogawa
Application Number:
JP2005506967A
Publication Date:
September 08, 2010
Filing Date:
June 09, 2004
Export Citation:
Assignee:
SUMITOMO METAL INDUSTRIES,LTD.
International Classes:
C22C38/00; B21B3/02; C21D7/02; C21D8/00; C22C38/58; C21D7/06
Domestic Patent References:
| JP2001049400A | 2001-02-20 |
Attorney, Agent or Firm:
Shoichi Hirose