Aluminum-based coating for flat steel products for press mold hardening components, and method for producing same

A method for producing a flat steel product for a subsequent annealing treatment in an austenitizing manner in a furnace at a furnace temperature in the range of 880° C. to 950° C., the flat steel product comprising an aluminum-based coating having 1.8 to 15 mass percent silicon, comprising:

• applying as a coating an aluminum-based coat to the flat steel product in a hot-dipping process;
• subjecting the flat steel product with the coat to an erosive surface treatment after the hot-dipping process, in which, starting from the surface of the coating, aluminum is at least partially removed chemically or electrochemically from the coating in order to increase the percentage proportion of silicon in comparison with the proportion of aluminum in the surface of the coat such that the surface of the coating has a degree of absorption for thermal radiation between 0.35 and 0.95, wherein the degree of absorption is related to the furnace temperature in the aforementioned range during the austenitizing annealing treatment.