Nippon Steel Corporation

Nobuo Nakasone

Shintaro Yamanaka

Yasuhiko Sato

Hirokazu Yokoya

Hiroaki Ando

Masakazu Noda

To provide a Sn-based plated steel sheet capable of exhibiting superior corrosion resistance, yellowing resistance, coating film adhesiveness, and sulphide stain resistance without using a chromate film. A Sn-based plated steel sheet of the present invention includes: a steel sheet; a Sn-based plating layer located on at least one surface of the steel sheet; and a coating layer located on the Sn-based plating layer, wherein the Sn-based plating layer contains 1.0 g/mto 15.0 g/mof Sn per side in terms of metal Sn, the coating layer contains zirconium oxide, and a content of the zirconium oxide is 1.0 mg/mto 10.0 mg/mper side in terms of metal Zr, the zirconium oxide includes zirconium oxide with an amorphous structure, and a crystalline layer whose main component is zirconium oxide with a crystalline structure is present on an upper layer of the zirconium oxide with the amorphous structure.

Sn-based plated steel sheet

A Sn-plated steel sheet including a base plated steel sheet having a steel sheet, a Sn-plated layer on at least one surface of the steel sheet, and a film layer containing a zirconium oxide and a tin oxide. An adhesion amount of Sn per surface of the Sn-plated steel sheet is 0.1 g/mor more and 15 g/mor less, an amount of the zirconium oxide in the film layer is in a range of 1 mg/mor more and 30 mg/mor less in terms of an amount of metal Zr, a peak position of a binding energy of Sn3dof the tin oxide is 1.4 eV or more and less than 1.6 eV from a peak position of a binding energy of metal Sn, and a quantity of electricity required for reduction of the tin oxide is more than 5.0 mC/cmand 20 mC/cmor less.

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Tokyo, Japan

Nobuo Nakasone