Tungsten Carbide Screw

screws and barrels for injection molding machine Specification:Φ20mm-150mm Basematerial:SL-01 SL-06 Time of hardening and tempering: 48 hours Hardness of Hardening and tempering: HRC30°C Hardness : approximately HRC70-72°C Ingredients of alloy: 80%Wc+10%Co+4%Cr Alloy depth:0.15-0.5 Straightness of screw:0.015mm/m Surface roughness:Ra0.6 Application: engineering resin with 40 60% glass fiber, LCP,PA,PC,PBT,PP,PET,PA66,PEK,halogen-free materials.