Tempering hardness：HB260-290
Nitridation hardnessNitration case depth：0.4-0.7mm
Nitridation brittleness ≤ grade 1
Surface roughness：Ra0.4
Screw straightness：0.015mm
Chromium coating hardness after nitridation：≥900HV
Chromium coating thickness：0.05-0.10mm
Dual alloy hardness：HRC56-65
Dual alloy depth：0.8-2.0mm
Material and technology
Quality38CrMoAIA
Quality duplex stainless steel
Quality power metallurgy material
Cold/hot spraying hard metal technology
Advanced nitriding technology
Corrosion resistance, wear-resisting dual alloy spraying technology
Material：38CrMoALA
Tempering hardness：HB260-290
Nitridation hardness：0.40-0.70mm
Surface hardness：HV940-1050
Surface roughness：Ra0.4um
Screw straightness：0.015mm
Chromium coating hardness after nitridation：≥950HV
Chromium coating thickness：0.03-0.08mm
Dual alloy depth：HRC55-62
