Zn Al Mg Based Molten Plated Steel Member

Abstract: This Zn-Al-Mg-based molten plated steel member comprises a steel member and a molten plating layer disposed on the surface of the steel member, the average formulation of the molten plating layer including 4 to 22 mass % of Al, 1.0 to 10.0 mass % of Mg, 0.0001 to 2 mass % of Fe, and the balance of Zn and impurities, the total area ratio of white pixels being 30% to 70% in binarized image data of image data capturing the surface of the molten plating layer, the binarized image data being obtained through binarization processing of image data by Ohtsu's binarization method.

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