FERRITIC STAINLESS STEEL AND FERRITIC STAINLESS STEEL FOR CAR EXHAUST GAS PATHWAY MEMBER

Title:

FERRITIC STAINLESS STEEL AND FERRITIC STAINLESS STEEL FOR CAR EXHAUST GAS PATHWAY MEMBER

Document Type and Number:

WIPO Patent Application WO/2018/135028

Kind Code:

A1

Abstract:

The present invention is a ferritic stainless steel containing C: 0.03 mass% or less, Si: 0.1-0.8 mass%, Mn: 1.0 mass% or less, P: 0.04 mass% or less, S: 0.01 mass% or less, Ni: 0.5 mass% or less, Cr: 12.0-15.0 mass%, N: 0.03 mass% or less, Nb: 0.1-0.5 mass%, Cu: 0.8-1.5 mass%, and Al: 0.1 mass% or less, the balance being Fe and unavoidable impurities, wherein γmax represented by equation (1) is 55 or less. (1) γmax=420C-11.5Si+7Mn+23Ni-11.5Cr+470N+9Cu-52Al+189 In the equation, C, Si, Mn, Ni, Cr, N, Cu and Al denote the mass% of said elements.

Inventors:

OKA YOSHIHIRO (JP)
FUJIMURA YOSHITOMO (JP)
IMAKAWA KAZUNARI (JP)

Application Number:

PCT/JP2017/031988

Publication Date:

July 26, 2018

Filing Date:

September 05, 2017

Export Citation:

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Assignee:

NISSHIN STEEL CO LTD (JP)

International Classes:

C22C38/00; C21D9/46; C22C38/48; C22C38/54; F01N13/16

Foreign References:

JP2009235555A	2009-10-15
JP2012188748A	2012-10-04
JPH04228547A	1992-08-18
JP2008297631A	2008-12-11
JP2011174122A	2011-09-08
JP2008144199A	2008-06-26
JP2012188748A	2012-10-04
JP2012007195A	2012-01-12
JP2017007842A	2017-01-12

Other References: