rubber extruder barrel

rubber extruder barrel

Technical Specification

Hardness After Hardening & Tempering:HB280-320

Nitrided Hardness:HV850-1000

Nitrided Case Depth:0.50-0.80mm

Nitrided Britleness:≤ Grade 2

Surface Roughness:Ra 0.4

Screw Straightness:0.015

Material:38CrMoALA,Cr12MV,SKD11,SKD61,duplex stainless steel etc