Title:
ALLOY AND MULTILAYER STEEL PIPE HAVING CORROSION RESISTANCE IN ENVIRONMENT FOR BURNING FUEL CONTAINING V, Na, S and Cl
Document Type and Number:
WIPO Patent Application WO/1995/024512
Kind Code:
A1
Abstract:
This invention provides a high corrosion resistance steel pipe as a boiler pipe, etc., used for equipment which burns fossil fuels or trash for use as an energy source. The present invention provides an alloy comprising not greater than 0.05 % of C, 1.0 to 2.6 % of Si, 0.02 to 0.5 % of Mn, 20 to 28 % of Cr, 24 to 36 % of Ni, not greater than 4 % of Mo, not greater than 0.4 % of Nb, not greater than 0.05 % of Al and the balance of Fe and unavoidable impurities, satisfying the following formulas, and having corrosion resistance in an environment for burning a fuel containing V, Na, S and Cl, and a multilayer steel pipe using this alloy as a liner material and a standard boiler steel pipe as a base layer material: Ni (Cr + 2Si + 0.5Mo), Nb 8C, Mo(Cr - 18) 8.
Inventors:
OGAWA HIROYUKI (JP)
ISHITSUKA TETSUO (JP)
NOSE KOICHI (JP)
ISHITSUKA TETSUO (JP)
NOSE KOICHI (JP)
Application Number:
PCT/JP1995/000382
Publication Date:
September 14, 1995
Filing Date:
March 08, 1995
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
OGAWA HIROYUKI (JP)
ISHITSUKA TETSUO (JP)
NOSE KOICHI (JP)
OGAWA HIROYUKI (JP)
ISHITSUKA TETSUO (JP)
NOSE KOICHI (JP)
International Classes:
C22C38/00; B32B15/01; C22C30/00; C22C38/40; C22C38/48; (IPC1-7): C22C38/00; C22C38/48
Foreign References:
| JPS6199660A | 1986-05-17 | |||
| JPS57203740A | 1982-12-14 | |||
| JPS5953343B2 | 1984-12-24 | |||
| JPS6338558A | 1988-02-19 | |||
| JPH02203092A | 1990-08-13 | |||
| JPH04221034A | 1992-08-11 |
Other References:
See also references of EP 0709479A4
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