Title:
MARTENSITIC STAINLESS STEEL WITH EXCELLENT NON-RUSTING PROPERTY FOR DISK BRAKE
Document Type and Number:
WIPO Patent Application WO/2007/129651
Kind Code:
A1
Abstract:
A martensitic stainless steel having excellent non-rusting properties for use in disk brakes which is characterized by containing, in terms of mass%, 0.01-0.10% C, 0.05-2% Si, 0.2-2.0% Mn, up to 0.01% S, 0.005-0.025% N, 10-14% Cr, 0.02-2% Ni, 0.001-0.1% Al, and up to 0.5% V, with C+N being 0.06-0.1%, further containing either (i) one or more of P, As, Sb, and Bi in a total amount of 0.05-0.5% or (ii) 0.005-0.05% P and 0.005-0.05% Bi, provided that the sum of both is 0.01-0.05%, and optionally further containing Cu, Ti, Mo, and Nb in given amounts, with the remainder being Fe and unavoidable impurities. It is further characterized in that γp expressed by the following (equation 1) is 80 or larger. γp=420[%C]+470[%N]+23[%Ni]+9[%Cu]+7[%Mn]-11.5[%Cr]-11.5[%Si]-52[%Al]-12[%Mo]-47[%Nb]+189 (equation 1)
Inventors:
INOUE YOSHIHARU (JP)
HOMMA HOTAKA (JP)
HOMMA HOTAKA (JP)
Application Number:
PCT/JP2007/059344
Publication Date:
November 15, 2007
Filing Date:
April 24, 2007
Export Citation:
Assignee:
NIPPON STEEL & SUMIKIN SST (JP)
INOUE YOSHIHARU (JP)
HOMMA HOTAKA (JP)
INOUE YOSHIHARU (JP)
HOMMA HOTAKA (JP)
International Classes:
C22C38/00; C22C38/60
Foreign References:
| JP2005126735A | 2005-05-19 | |||
| JP2000063995A | 2000-02-29 | |||
| JPH05331599A | 1993-12-14 | |||
| JPH06200355A | 1994-07-19 |
Attorney, Agent or Firm:
AOKI, Atsushi et al. (Toranomon 37 Mori Bldg. 5-1,Toranomon 3-chome, Minato-ku, Tokyo 23, JP)
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