extruder screw barrel

Specifications:
Product name: Screws and barrels for Extruder Machine
Size: Screw Diameter: F10mm-F500mm
Length: =10000mm
Barrel ID: F10mm-F500mm
Material: 38CrMoAlA; SKD61; SKD11; 40Cr; 42CrMo; high quality alloy steel
Technology: nitriding treatment, alloy coating spraying, heat-treatment
Appliance: PVC, PP, PE, PA, PC, ABS, AS etc

Technical Index (30g-25000g):
Depth of Nitrated Layer: 0.5-0.8mm
Hardness of nitration: 900-1020Hv
Fragility of nitration: Less than grade 1
Surface Hardness of Nitrated Cr coating layer: =950Hv
Hardness of Bimetallic Layer: HRC55°-72°
Thickness of Cr-coating Layer: 0.03-0.08mm
Depth of Bimetallic Layer: >2mm

extruder screw barrel