A composite plated steel sheet including a base steel sheet; a ZnMgAl-based plating layer provided on at least one surface of the base steel sheet; and a resin layer provided on at least one surface of the ZnMgAl-based plating layer. The resin layer includes a base resin and resin powder. A hardness of the resin powder is 1.1 to 2 times that of the base resin.

A method of manufacturing a razor blade cutting edge, the method including: applying a single coating of a polymer material to the razor blade cutting edge to form a coated blade edge; selecting a temperature profile, where the temperature profile has a temperature and a time, and wherein the temperature profile is selected based on a composition of the razor blade cutting edge; heating the coated blade edge at the temperature and for the time indicated by the selected temperature profile to adhere the polymer material to the razor blade cutting edge; and optionally treating the coated blade edge with a solvent or a mechanical process to partially remove the coating.