Technical RequirementsNo burrs and sharp cornersNifrocarburized in Plasma and OxidizedThickness of compound layer:13-23Thickness of oxide layer:1-3Effective case depth NHT:0.38-0.55Threshold hardness (actual core hardness +50HV)Core hardness:310-360HV10Hardness in depth of 0.1:610HV1 min