| 摘要 |
A martensite dual-phase stainless steel, which has an excellent balance of strength and formability, is inexpensive and suitable for spring parts, has a chemical composition consisting of 0.1-0.4% of C, 2.0% or less of Si, 0.1-6.0% of Mn, 10.0-28.0% of Cr, 0.17% or less of N, and the balance being Fe and impurities, and is composed of ferrite and martensite phases, and optionally a residual austenite phase of 5 vol% or less, wherein the stainless steel has a metallic composition that satisfies the relationship of CM/CF>=5.0 between a mean value CF of the content of C present in the ferrite phase and a mean value CM of the content of C present in the martensite phase. |
