STEEL MATERIAL HAVING EXCELLENT CORROSION RESISTANCE AND EXCELLENT MAGNETIC PROPERTIES AND PRODUCTION METHOD THEREFOR

Title:

STEEL MATERIAL HAVING EXCELLENT CORROSION RESISTANCE AND EXCELLENT MAGNETIC PROPERTIES AND PRODUCTION METHOD THEREFOR

Document Type and Number:

WIPO Patent Application WO/2014/157302

Kind Code:

A1

Abstract:

The present invention inexpensively provides a steel material having greater corrosion resistance than electromagnetic stainless steel and also having excellent magnetic properties. The steel material comprises, in % by mass, 0.001%-0.025% C, 1.0%-4.0% Si, 0.1%-1.0% Mn, more than 0% but no more than 0.030% P, more than 0% but no more than 0.10% S, more than 0% but less than 4.0% Cr, more than 0% but no more than 0.010% Al, and more than 0% but no more than 0.01% N, with the remainder being iron and unavoidable impurities; and is characterized by having an oxide coating formed on the steel material surface, said oxide coating including either Si or Cr, or both, including a non-crystalline layer, and having a thickness of 50-500 nm.

Inventors:

MASUMOTO KEI

Application Number:

PCT/JP2014/058451

Publication Date:

October 02, 2014

Filing Date:

March 26, 2014

Export Citation:

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Assignee:

KOBE STEEL LTD (JP)

International Classes:

C22C38/00; C21D1/26; C21D1/76; C21D6/00; C22C38/60; H01F1/14

Foreign References:

JP2012153911A	2012-08-16
JP2011137188A	2011-07-14
JP2011149089A	2011-08-04
JP2008517158A	2008-05-22
JPH06228717A	1994-08-16
JP2010235976A	2010-10-21
JP2007046125A	2007-02-22

Other References: