| 摘要 |
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.
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