| (19) |
 |
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(11) |
EP 2 206 795 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
04.08.2010 Bulletin 2010/31 |
| (43) |
Date of publication A2: |
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14.07.2010 Bulletin 2010/28 |
| (22) |
Date of filing: 19.10.2009 |
|
| (51) |
International Patent Classification (IPC):
|
|
| (84) |
Designated Contracting States: |
|
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO
PL PT RO SE SI SK SM TR |
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Designated Extension States: |
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AL BA RS |
| (30) |
Priority: |
24.12.2008 JP 2008328459
|
| (71) |
Applicant: Kabushiki Kaisha Toshiba |
|
Minato-ku,
Tokyo 105-8001 (JP) |
|
| (72) |
Inventors: |
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- Nemoto, Kuniyoshi
Tokyo 105-8001 (JP)
- Imai, Kiyoshi
Tokyo 105-8001 (JP)
- Yoshioka, Yomei
Tokyo 105-8001 (JP)
- Yamada, Masayuki
Tokyo 105-8001 (JP)
- Miyashita, Shigekazu
Tokyo 105-8001 (JP)
- Suga, Takeo
Tokyo 105-8001 (JP)
- Takahashi, Takeo
Tokyo 105-8001 (JP)
- Ikeda, Kazutaka
Tokyo 105-8001 (JP)
|
| (74) |
Representative: HOFFMANN EITLE |
|
Patent- und Rechtsanwälte
Arabellastrasse 4
81925 München
81925 München (DE) |
|
| |
|
| (54) |
Ni-based alloy for a casting part of a steam turbine with excellent high temperature
strength, castability and weldability |
(57) A Ni-based alloy for a casting part of a steam turbine having excellent high temperature
strength, castability and weldability includes, in percentage by mass, 0.01 to 0.15
of C, 18 to 28 of Cr, 10 to 15 of Co, 8 to 12 of Mo, 1.5 to 2 of Al, 0.1 to 3 of Ti,
0.001 to 0.006 of B, 0.1 to 0.7 of Ta, and the balance of Ni plus unavoidable impurities.