BLACK FERRITE-BASED STAINLESS STEEL SHEET

Title:

BLACK FERRITE-BASED STAINLESS STEEL SHEET

Document Type and Number:

WIPO Patent Application WO/2018/155075

Kind Code:

A1

Abstract:

Provided is a black stainless steel sheet that has excellent weldability, that can ensure good toughness and corrosion resistance, and that can maintain the blackness of the surface thereof, even after being welded. This black ferrite-based stainless steel sheet having excellent weldability includes, as a base, a stainless steel containing, in mass%, 0.020% or less of C, 1.0% or less of Si, 0.35% or less of Mn, 0.04% or less of P, 0.005% or less of S, 11-25% of Cr, 1.0% or less of Mo, 0.020% or less of N, 0.4% or less of Al, 10(C+N) to 0.3% of Ti, 0.05% or less of Nb, and 0.01% or less of O, and has a surface in which an oxide coating is formed on the base, wherein the surface has a lightness index (L*) satisfying L*≤45, chromaticity indices (a*, b*) satisfying -5≤ a* ≤5 and -5≤ b* ≤5, and a blackness (E) satisfying E=(L*2+a*2+b*2)1/2 ≤ 45.

Inventors:

TAI YOSHIKAZU (JP)
SAIDA TOMOAKI (JP)
IMAKAWA KAZUNARI (JP)
SUZUKI SATOSHI (JP)

Application Number:

PCT/JP2018/002452

Publication Date:

August 30, 2018

Filing Date:

January 26, 2018

Export Citation:

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Assignee:

NISSHIN STEEL CO LTD (JP)

International Classes:

C22C38/00; C22C38/28; C22C38/54; C23C24/08

Domestic Patent References:

WO2014157578A1

2014-10-02

Foreign References:

JPH1161376A	1999-03-05
JPH08239733A	1996-09-17
JP2000129405A	2000-05-09
JP2016211076A	2016-12-15
JP2016183375A	2016-10-20
JPH10259418A	1998-09-29
JPH0433863B2	1992-06-04
JPS61376A	1986-01-06
JP3198979B2	2001-08-13
JP3657356B2	2005-06-08
JP3770995B2	2006-04-26

Other References: