... forde:250-32000KN Superhard screw for injection molding machine Screw materialsGrade A super hard screw Base material ... processing of 50-60% fiberglass, Bakelite, dynamoelectric injection machine, magnetic particle ,ceramic powder, aluminum and magnesium powder, ... plastic such as ABS,PP,PA66,LCP,PC,EVA,PS,U-PVC,PVC,PU,or Plastics. Depth ... ~0.08mm Super - hard plastic injection moulding machine screw