PEEK for CNC machining

High temperature, chemical and medical applications.

Family

Plastic

Density

1.3 g/cm³

Machinability

average (3/5)

Relative cutting speed

about 60% of aluminium 6082

Indicative price

€150 per kg

What to know

Very expensive raw material. Only use it when temperature or chemical resistance demands it.

Design tips

Plastics expand far more with temperature than metals and can move after machining. Use looser tolerances (±0.1 mm or more) and avoid tight fits over long lengths.