Base Material1)38CrMoAlA 2)Cr12MOV3)4Cr5MoSiV1 4)42CrMoBimetallic Alloy Materials
1)Fe-based alloy  
2)Ni-based alloy/Deloro alloy 
3)Co-based alloy  
4)NiCo-based alloy 
5)Tungsten carbide/Wolfram carbide 
Double-alloy level
Level A - containing Tungsten of 40%
Level B - containing tungsten of 25%
Level C - containing tungsten of 9.5%
Heat Treatment
High Frequency Treatment
Nitriding treatment(120 Hours)
Hard Chrome Plating treatment
Bimetallic alloy coating
Vacuum quenching
Basic information
Depth of Nitrided Layer: 0.5-0.8 mm
Hardness of Nitrided Layer: 950-1020Hv 
Thickness of Hard Chrome Plating Layer: 0.03-0.08mm
Hardness of Hard Chrome Plating Layer: ≥950HV
Bimetallic Barrel/Cylinder: Centrifugal Casting
Depth of Bimetallic Layer: 2-3mm
Hardness of Bimetallic Layer: HRC58°-62°
Roughness of the surface:Ra0.4um
Linearity of the screw: 0.015mm
Fragility of Nitration:less than one class
Hardness after Hardening & Tempering: HB260-290
Material Application
1)General Plastics
2)ABS,PA,PC,PE,PET,PP,PS,EVA,PU,PVC,U-PVC,etc
3)PA + GF(Glass Fiber)
4)Flame-resistant Reinforced Plastics
5)Modified Engineering Plastics
6)All kinds of Mixed Recycled Material(in Scrap or Granule),etc
Our products advantages
1)High productivity        
2)Wonderful plasticizing
3) low energy consumption  
4)Wearable and Durable
5)Fast and On time delivery
6)Best customer service