What material is an extruder screw made of?

Mar 13,2024

Extruder screws are typically made of high-strength materials that can withstand the high temperatures and pressures involved in the extrusion process. Common materials used for extruder screws include:

Stainless steel: Offers good corrosion resistance and durability.


Tool steel: Known for its high strength and wear resistance.


Nitrided steel: Treated with nitrogen to improve hardness and wear resistance.


Bimetallic construction: Consists of a steel core with a wear-resistant coating, such as tungsten carbide, applied to the surface to enhance durability.

The specific material used can vary depending on factors such as the type of extrusion process, the materials being extruded, and the desired performance characteristics of the screw.

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