Abstract
The purpose of the present invention is to provide a stainless clad steel which exhibits excellent corrosion resistance, particularly excellent anti-rust properties, and an improvement in appearance due to changes in the color of the surface thereof, and with which the occurrence of outflow rust can be prevented. A stainless clad steel according to the present invention has, as a cladding material, stainless steel having a pitting index represented by formula (1) of at least 35, and is characterized in that: the ratio of Cr concentration (at%)/Fe concentration (at%) in the parent phase portion of the cladding material to Cr concentration (at%)/Fe concentration (at%) in the passivation film portion of the cladding material is at least 1.20; and the σ (sigma) phase deposition amount of the surface of the cladding material, expressed as an area ratio, is not more than 2.0%. Formula (1): pitting index = (Cr+3.3Mo+16N) (in formula (1), Cr, Mo, and N each represent the content (mass%) of the respective element, and if the element is not present, the corresponding number is 0).
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