Austenitic stainless steel for fuel reformer excellent in adhesion of oxide film and method for producing the same

摘要

PROBLEM TO BE SOLVED: To provide an austenitic stainless steel sheet for a fuel reformer combining economical efficiency with such a durability that adhesion of an oxide film is not impaired even when a heating and cooling cycle of activation and stop is repeated under a modified gas environment without depending on addition of rare earth elements or Ni.SOLUTION: The austenitic stainless steel sheet for a fuel reformer excellent in adhesion of an oxide film is provided that includes, by mass%, Cr:15 to 25%, C:0.1% or less, Si:5% or less, Mn:3% or less, P:0.05% or less, S:0.01% or less, Ni:8 to 18%, Cu:3% or less, Mo;3% or less, N:0.3% and further one or two or more kind of Nb:0.01 to 0.5%, Ti:0.01 to 0.5%, V:0.01 to 0.5%, Al:0.01 to 0.5%, B:0.005% or less and Mg:0.005% or less. It is preferred that a Cr-based oxide layer including Si and/or Mn is formed on the surface of the austenitic stainless steel sheet and that two or more kinds of Si oxide, Mn oxide, Nb oxide, Ti oxide and Al oxide are present between the Cr-based oxide layer and a base material.SELECTED DRAWING: None