Pelletizer Knife Material?

Does anyone know what kind of material is best to use for pelletizer blades for use in the plastic industry?

This is a customer request. The largest size knife they can buy is 2.12″ x 1.37″ wide by 0.047” thick. They think the knife would work better if it was 2.3” long by 1.37” wide by 0.047” thick.

The machine manufacturer does not offer a longer knife just the shorter one.

The sample knife I have is a shiny gray metal with a mirror finish and is magnetically responsive.

I thought perhaps it was some sort of high speed steel or possibly something such as Stellite© but wondered if anybody could give me a more exact answer.

Thank you,

Tom Walz

Carbide Processors

sales@carbideprocessors.com
800 346-8274

One Response to “Pelletizer Knife Material?”

  1. Tom,

    Pelletizer knives such as the one you are holding are either made from M2 HSS or powdered metal (CPM). Stellite is only used in large strand-cut pelletizer rotors so they can be repaired if need be. Hope this helps

    Best Regards,

    Chris Underhill

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