| 摘要 |
PROBLEM TO BE SOLVED: To provide a coated metallic sheet which has both of excellent corrosion resistance in flat parts, flawed parts of coating films, etc., and excellent corrosion resistance at cut end faces and the flawed parts of the coating films in combination. SOLUTION: The metallic sheet possessing a plating layer having a metallic structure which consists of 4 to 10 mass% Al, 1 to 4 mass% Mg, and if necessary, 0.002 to 0.1 mass% Ti, 0.001 to 0.45% B and the balance Zn and inevitable impurities and has a [primary crystal Al phase] or [primary crystal Al phase) and (Zn single phase) co-existing in the base of [the ternary eutectic structure of Al/Zn/Zn2Mg) is provided with a chemical conversion treated film formed on the surface of the plating layer, a primer coating film formed on the surface of this chemical conversion treated film and a finish coating film formed on the primer coating film.
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