Title:
ALLOY HAVING CORROSION RESISTANCE IN COMBUSTION ENVIRONMENT IN WHICH V, NA, S AND CL ARE PRESENT AND MULTIPLE LAYERED STEEL TUBE
Document Type and Number:
Japanese Patent JPH0517841
Kind Code:
A
Abstract:
PURPOSE: To provide an alloy having high corrosion resistance and an alloy having steam oxidation resistance in a high temp. combustion environment in which V2O5, Na2SO4, NaCl, etc., are present and a multiple layered steel tube constituted of the relevant alloy.
CONSTITUTION: The alloy consisting of, by weight, ≤0.05% C, 0.02 to 0.5% Si, 0.02 to 0.5% Mn, 15 to 35% Cr, 0.5 to 4% Mo, >40 to 60% Co, 5 to 15% Fe, 0.5 to 5% W, 0.0003 to 0.005% Ca and the balance Ni with 4% lower limit with inevitable impurities and satisfying ≥30(%) Cr(%)+0.5Ni(%)+3Mo(%) and having corrosion resistance in a combustion environment in which V, Na, S and Cl are present is prepd.
Inventors:
OGAWA HIROYUKI
ISHIZUKA TETSUO
DENPO KOZO
MIYASAKA AKIHIRO
TAKEDA KOICHI
ARAKI SATOSHI
ISHIZUKA TETSUO
DENPO KOZO
MIYASAKA AKIHIRO
TAKEDA KOICHI
ARAKI SATOSHI
Application Number:
JP33890291A
Publication Date:
January 26, 1993
Filing Date:
December 20, 1991
Export Citation:
Assignee:
NIPPON STEEL CORP
International Classes:
B32B15/01; C22C19/07; C22C30/00; (IPC1-7): C22C19/07
Attorney, Agent or Firm:
Kazuo Ozeki
Next Patent: JPH0517842