| 摘要 |
<p>A first plated steel product having an alloy layer formed at the interface between a plating layer and a base iron, which has a chemical composition, i n mass %: Fe: 25 % or less, Al: 30 % or less, Mg: 5 % or less, and balance: Zn , and has a thickness of 20 ?m or less; and a method for producing the first steel product; a second plated steel product having, formed at the interface between a plating layer and a base iron, an inner alloy layer which has a chemical composition, in mass %: Fe: 15 % or more, Al: 20 % or more, Si: 2 % or more, Mg: 5 % or less, and balance: Zn, and has a thickness of 5 ?m or less, and an outer alloy layer which has a chemical composition, in mass %: Fe: 25 % or less, Al: 30 % or less, Si: 2 % or more, Mg: 5 % or less, and balance: Zn, and has a thickness of 30 ?m or less; and a method for producin g the second steel product. The steel products exhibits a corrosion resistance and formability which are improved and sufficient for steel products to be used outdoors, such as building materials, materials for revetment, fishing nets and fences.</p> |
