Al coating layer-equipped stainless steel sheet

An Al coating layer-equipped stainless steel sheet comprising:

• a base steel sheet;
• and
• an Al coating layer on a surface of the base steel sheet,
• wherein the base steel sheet is a stainless steel sheet having a thickness of 100 μm or less and a chemical composition containing, in mass %,
• C:
• 0.030% or less,
• Si:
• 1.00% or less,
• Mn:
• 1.00% or less,
• P:
• 0.040% or less,
• S:
• 0.010% or less,
• Cr:
• 11.0% to 30.0%,
• Al:
• 1.53% to 6.50%,
• Ni:
• 0.01% to 0.50%, and
• N:
• 0.020% or less,
• with a balance consisting of Fe and inevitable impurities,
• a thickness of the Al coating layer is 0.5 μm to 3.5 μm, and
• a total content of Fe and Cr at a first depth of the Al coating layer is 20 mass % to 70 mass %,
• where the first depth of the Al coating layer is a depth of (depth a +depth b)/2 from a surface of the Al coating layer,
• the depth a is a depth at which an Al strength is [maximum Al strength]/2, in a depth region from the surface of the Al coating layer to a point A of an Al concentration profile in a depth direction, the point A being a depth at which the Al strength is the maximum Al strength in the Al concentration profile, and
• the depth b is a depth at which the Al strength is ([maximum Al strength]+[Al strength corresponding to the Al content in the base steel sheet])/2, in a depth region from the point A to an interface between the base steel sheet and the Al coating layer of the Al concentration profile.