MARTENSITIC STAINLESS STEEL HAVING EXCELLENT WEAR RESISTANCE AND CORROSION RESISTANCE, AND METHOD FOR PRODUCING SAME

Title:

MARTENSITIC STAINLESS STEEL HAVING EXCELLENT WEAR RESISTANCE AND CORROSION RESISTANCE, AND METHOD FOR PRODUCING SAME

Document Type and Number:

WIPO Patent Application WO/2015/022932

Kind Code:

A1

Abstract:

This martensitic stainless steel having excellent corrosion resistance has a steel composition that is composed, in mass%, of 0.40-0.50% of C, 0.25-0.60% of Si, 2.0% or less of Mn, 0.035% or less of P, 0.010% or less of S, 11.0-15.5% of Cr, 0.01-0.60% of Ni, 0.50% or less of Cu, 0.10% or less of Mo, 0.005-0.10% of Sn, 0.10% or less of V, 0.03% or less of Al, 0.01-0.05% of N and the balance made up of Fe and unavoidable impurities. In this connection, the ranges of C, N and Sn satisfy formula (1). S value = 16 × Sn/C + 2 × N/C ≥ 0.40% (1)

Inventors:

TERAOKA SHINICHI (JP)
SAKAMOTO SHUNJI (JP)
ISHIMARU EIICHIRO (JP)
OOMURA KEIICHI (JP)

Application Number:

PCT/JP2014/071175

Publication Date:

February 19, 2015

Filing Date:

August 11, 2014

Export Citation:

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Assignee:

NIPPON STEEL & SUMIKIN SST (JP)

International Classes:

C22C38/00; C22C38/58; C21D8/02

Foreign References:

JP2002212680A	2002-07-31
JP2004002951A	2004-01-08
JP2011184716A	2011-09-22
JP2002256397A	2002-09-11
JP2005344184A	2005-12-15
JP2010215995A	2010-09-30

Other References: