Nylon PA6 for CNC machining

Wear parts, rollers, guides, insulators.

Family

Plastic

Density

1.14 g/cm³

Machinability

average (3/5)

Relative cutting speed

about 100% of aluminium 6082

Indicative price

€8 per kg

What to know

Absorbs water and changes size, so tight tolerances drift. Choose POM when stability matters.

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.

Cheaper alternative

POM-C (acetal, Delrin type): POM holds tolerances better because it does not absorb water, and it machines more cleanly.