Sn-plated stainless steel sheet

Patent metadata

Field	Value
Publication number	US-9834848-B2
Application number	US-201415321851-A
Country	US
Kind code	B2
Filing date	Jul 29, 2014
Priority date	Jun 25, 2014
Publication date	Dec 5, 2017
Grant date	Dec 5, 2017

Abstract

A tin-plated stainless steel sheet which has a tin plating layer having good adhesion to a stainless steel sheet and exhibits excellent whisker resistance in various environments, and wherein a nickel plating layer having a thickness of 0.3-3 μm is formed on a stainless steel sheet, and a tin plating layer having a thickness of 0.3-5 μm is formed on the nickel plating layer. This tin-plated stainless steel sheet is characterized in that nickel crystals in the nickel plating layer have a lattice distortion of 0.5% or less.

First claim

The invention claimed is:

1. A Sn-plated stainless steel sheet, comprising:
a stainless steel sheet;
a Ni-plating layer having a thickness of 0.3 to 3 μm formed on the stainless steel sheet; and
a Sn-plating layer having a thickness of 0.3 to 5 μm formed on the Ni-plating layer,
wherein a Ni crystal of the Ni-plating layer has a lattice distortion of 0.5% or less.

2. The Sn-plated stainless steel sheet according to claim 1 , to which a reflow treatment has not been subjected.

Assignees

• Nisshin Steel Co Ltd

Inventors

• Nishida Yoshikatsu
• Tatano Masayoshi
• Fujii Takahiro
• Hiraoka Masashi
• Nagao Masao

Classifications

• C25D5/00

  Electroplating characterised by the process; Pretreatment or after-treatment of workpieces · CPC title

• C25D3/30

  of tin · CPC title

• B32B15/015 Primary

  the said other metal being copper or nickel or an alloy thereof · CPC title

• C25D5/36

  of iron or steel · CPC title

• C25D3/12

  of nickel or cobalt · CPC title