PA6 and PA66

The difference between PA6 and PA66 is small, therefore they have been handled in the material card.

Let’s start by listing the main properties of PA6 and then see how PA66 differs from that.

Why choose (PA6)?

  • Good bearing properties; low friction, low wear. PA6 is known as “bearing material”.
  • Good fatigue resistance
  • Good impact resistance, even at low temperatures
  • Excellent chemical resistance, especially against fuel and oil
  • Good thermal resistance, better than POM
  • Better dimensional accuracy than POM
  • Better surface quality than POM

Why not choose?

  • PA6 absorbs moisture which might decrease its strength and tensile modulus by half.
  • The surface of the components feels slightly oily. This, in some cases, might not give the desired quality appearance.

Typical applications:

  • Small technical parts in printers
  • Screw anchors
  • Stadium seats


Why choose?

Mostly the same qualities as PA6, but

  • Slightly short term better thermal resistance than
  • Absorbs slightly less moisture
  • Higher modulus
  • Better wear resistance
  • Better short term heat resistance

Why not choose?

  • Higher price than PA6 (not dramatically, might be worth the money)
  • For visual parts, PA6 has slightly better surface quality and processability

Typical applications:

  • Cable ties
  • Ski bindings

Note: Both PA6 and PA66 require proper drying before processing.

Do you have something to add? Do you disagree? Please help us improve.

  • Your comment will be sent to the administrator only. It will not be published.

  • This field is for validation purposes and should be left unchanged.

All information on is based on the best knowledge and understanding of experienced plastic product designers. Nevertheless, we may be wrong. Do not use this website as your primary or only source of information. Always check and test in practice. Kindly contribute, if you know better. We do not take any responsibility, financial or ethical, for the outcome of your product.