Exruder single/bimetallic screw barrel/screw barrel for injection machine/screw barrel for extruer machine
Material: 38CrMoAlA, 9Cr18MOV, SKD11, SKD61, HPT2B
Appliance: PP, PE, PVC. LDPE. HDPE, ABS,

Depth of Nitration Layer: 0.5-0.8mm
Hardness of Nitration: 950-1020Hv
Fragility of Nitration: Less than grade 1
Surface Roughness: Ra 0.4 um
Streightness of Screw: 0.015mm
Surface Hardness of Nitrated Cr coating Layer: >=950Hv
The Thickness of Cr Coating Layer: HRC55-62
Hardness of Alloy Plating: 0.03-0.08mm
Depth of Alloys Layer: >2mm

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