Title:
ANTICORROSIVE CHROME STEEL AND MANUFACTURE
Document Type and Number:
Japanese Patent JPS59179757
Kind Code:
A
Abstract:
The corrosion resistant chromium steel which includes 3 to 45% chromium, 0.2 to 5% nitrogen and other elements. Its structure contains at least 50% ferromagnetic structure components. It is directly magnetizable and, at 400 DEG C., has a yield strength of Rp0.2>400 N/mm2 and, at 600 DEG C., a yield strength of Rp0.2>250 N/mm2. To produce this chromium steel, a prealloy containing at least 50% ferromagnetic structure components is nitrogen enriched under pressure, is then hot worked, then annealed at 800 DEG to 1250 DEG C. and finally cooled to room temperature. A tempering treatment at 450 DEG to 750 DEG C. may follow.
Inventors:
YURUGEN HARUTOUITSUHI
PAURU PANTO
PAURU PANTO
Application Number:
JP5366684A
Publication Date:
October 12, 1984
Filing Date:
March 22, 1984
Export Citation:
Assignee:
KRUPP GMBH
International Classes:
C21D6/00; C21D8/00; C22C38/00; C22C38/18; (IPC1-7): C21D6/00; C22C38/18; C22C38/50
Attorney, Agent or Firm:
Ezaki Mitsuyoshi
Previous Patent: JPS59179756
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