Title:
Ni-BASED ALLOY PIPE
Document Type and Number:
WIPO Patent Application WO/2016/052551
Kind Code:
A1
Abstract:
A Ni-based alloy pipe, the chemical composition of the base metal of which is, in mass%, C: not more than 0.15%, Si: not more than 1.0%, Mn: not more than 2.0%, P: not more than 0.030%, S: not more than 0.030%, Cr: 10.0-40.0%, Ni: 50.0-80.0%, Ti: not more than 0.50%, Cu: not more than 0.60%, Al: not more than 0.20%, N: not more than 0.20%, with the remainder being Fe and impurities, the Ni-based alloy pipe being provided with a low Cr composite oxide film with a thickness of not more than 25 nm on at least the inner surface of the base metal. The Al, Ni, Si, Ti and Cr contents in said film satisfy [at% Al/at% Cr ≤ 2.00], [at% Ni/at% Cr ≤ 1.40] and [(at% Si + at% Ti)/at% Cr ≥ 0.10].
Inventors:
MASAKI YASUHIRO (JP)
KANZAKI MANABU (JP)
KITAMURA KAZUYUKI (JP)
KINOMURA SHOJI (JP)
MOMOZONO YUMI (JP)
MIYAHARA OSAMU (JP)
KANZAKI MANABU (JP)
KITAMURA KAZUYUKI (JP)
KINOMURA SHOJI (JP)
MOMOZONO YUMI (JP)
MIYAHARA OSAMU (JP)
Application Number:
PCT/JP2015/077594
Publication Date:
April 07, 2016
Filing Date:
September 29, 2015
Export Citation:
Assignee:
NIPPON STEEL & SUMITOMO METAL CORP (JP)
International Classes:
C22C19/05; G21D1/00; C22F1/00; C22F1/10
Domestic Patent References:
| WO2013150947A1 | 2013-10-10 | |||
| WO2013146034A1 | 2013-10-03 |
Foreign References:
| JPS6455366A | 1989-03-02 |
Other References:
See also references of EP 3202932A4
Attorney, Agent or Firm:
BRIGHTAS IP ATTORNEYS (JP)
patent business corporation Bligh -- TASS (JP)
patent business corporation Bligh -- TASS (JP)
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