One of the best known grade of wear resistant engineering plastics is Black Black Extruded Nylon type 6 materials. This grade of plastic has been available for decades.

Black Cast Nylon type 66

Dupont Nylon is a super tough and durable mechanical plastic. Nylon is a common material for critical needs like machining critical wear parts for machines.  If you are looking for a wear resistant material simply click here, %LINK%
Extreme applications are typical for Cast and Extruded Nylon. Nylon is available in a massive selection of sizes and shapes, including thin sheet to massive blocks. The Natural Cast Nylon type 6 materials are readily available.

Should you pick Delrin versus Copolymer Acetal

Natural Nylon sheeting