Martensitic stainless steel having high hardness and high corrosion resistance for cold working and its manufacturing method

摘要

Softening material of high hardness and high corrosion resistance martensitic stainless steel excellent in cold workabilityMass%C: 0.15 to 0.70%Si: 2.0% or lessMn: 1.5% or lessS: less thanP: 0.05% or lessNi: 1.5% or lessCr: 10.5 to 16.0%Mo: 0.9-3.0%N: 0.14% or lessContainsOIt contains chemical components consisting of residual Fe and impurities.C + n / 2: 0.14-0.70%;And1 μ Carbonyl nitride over μ More than 10 in m2;Average diameter size of oxide μ AndHV hardness. Ltoreq. (60C + 170).