Patent Number: 8,871,038

Title: Tinned steel sheet and method for producing the same

Abstract: A tinned steel sheet includes an Sn-containing plating layer disposed on at least one surface of a steel sheet and in which mass per unit area of Sn is 0.05 to 20 g/m.sup.2; a first chemical conversion coating disposed on the Sn-containing plating layer and contains P and Sn, and in which mass per unit area of P is 0.3 to 10 mg/m.sup.2; a second chemical conversion coating disposed on the first chemical conversion coating and contains P and Al, and in which mass per unit area of P is 1.2 to 10 mg/m.sup.2 and mass per unit area of Al is 0.24 to 8.7 mg/m.sup.2; and a silane coupling agent-treating layer formed with the silane coupling agent disposed on the second chemical conversion coating and has a mass per unit area of Si of 0.10 to 100 mg/m.sup.2.

Inventors: Suzuki; Takeshi (Tokyo, JP), Nakamura; Norihiko (Tokyo, JP), Iwasa; Hiroki (Tokyo, JP)

Assignee: JFE Steel Corporation

International Classification: C23C 22/07 (20060101); C23C 22/58 (20060101)

Expiration Date: 2018-10-28 0:00:00