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1. A sheet metal component manufactured from a flat steel product, the steel substrate of which consists of a steel, comprising, in wt. %: 0.05-0.5% C, 0.5-3% Mn, 0.06-1.7% Si, up to 0.06% P, up to 0.01% S, up to 1.0% Al, up to 0.15% Ti, up to 0.6% Nb, up to 0.01% B, up to 1.0% Cr, up to 1.0% Mo, wherein the total of the contents of Cr and Mo is at most 1.0%, up to 0.2% Ca, up to 0.1% V, and as the remainder of iron and unavoidable impurities, which is coated with a corrosion protection coating consisting of in addition to Al, Fe, and unavoidable impurities, in wt. %: up to 15% Si, and in total 0.1-5% of at least one alkaline earth or additional transition metal, wherein a layer of the corrosion protection coating adjoining the steel substrate is an interdiffusion layer (D) consisting of ferrite with an Al content of up to 50 wt. %.
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