OXIDATION RESISTANT FERRITIC STAINLESS STEELS

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A method for making a ferritic stainless steel article having an oxidation resistant surface includes providing a ferritic stainless steel comprising aluminum, at least one rare earth metal and 16 to less than 30 weight percen t chromium, wherein the total weight of rare earth metals is greater than 0.02 weight percent. At least one surface of the ferritic stainless steel is modified so that, when subjected to an oxidizing atmosphere at high temperature, the modified surface develops an electrically conductive, aluminum-rich, oxidation resistant oxide scale comprising chromium and iron and a having a hematite structure differing from Fe2O3, alpha Cr2O3 and alph a Al2O3. The modified surface may be provided, for example, by electrochemical ly modifying the surface, such as by electropolishing the surface.