Title:
【発明の名称】フェライト系ステンレス鋼およびその製造方法
Document Type and Number:
Japanese Patent JPH04504140
Kind Code:
A
Abstract:
Ferritic stainless steel with ductility, shock-resistance and corrosion resistance in neutral or weakly acid chloridized media; also the prodn. process for fabrication of this steel. The steel is characterised by the following chemical composn.: 28.5-35 wt.% chromium, 3.5-5.50 wt.% molybdenum, 0.5-2 wt.% copper, less than 0.50 wt.% nickel, less than 0.40 wt.% manganese, less than 0.40 wt.% silicon, less than 0.030 wt.% carbon, less than 0.030 wt.% nitrogen, at least 0.10 wt.% but less than 0.60 wt.% titanium and/or niobium, and up to 0.10 wt.% deoxidizing additives such as aluminium, magnesium, calcium, boron or rare earth metals. The remainder of the material is composed of iron and impurities. The steel is worked in strip form. The steel strip is hot-rolled with reheating to a temp. of 900-1200 deg.C, followed by being cold-rolled. After this there is an intermediate stage of heating to 900-1200 deg.C. before a second cold-rolling. Finally the steel is reheated a last time to 900-1200 deg.C.
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Inventors:
Burgan, pierre
Bave, Jean-Claude
Bave, Jean-Claude
Application Number:
JP50495390A
Publication Date:
July 23, 1992
Filing Date:
March 13, 1990
Export Citation:
Assignee:
Eugenu, Acie de Chatillon Agnyon
International Classes:
C21D8/00; C22C38/00; C22C38/20; C22C38/22; (IPC1-7): C21D8/00; C22C38/00; C22C38/22
Attorney, Agent or Firm:
Takashi Koshiba