Arnite® mechanical properties

Arnite has excellent mechanical properties, exhibiting high strength and stiffness, outstanding creep properties even at elevated temperatures. Arnite also has very low wear loss and a low co-efficient of friction making it suitable for applications where sliding forces come into play.

Glass fiber reinforced Arnite grades have a very high strength and stiffness. PET has even higher mechanical properties compared to PBT, making it extremely suitable for very demanding applications such as in brake booster valve bodies.
Due to the low moisture uptake, Arnite shows no loss in strength and stiffness over ambient humidity levels.

Positioning of Arnite vs. other engineering thermoplastics

In general polyesters and its compounds show somewhat lower values for toughness (impact strength) compared to polycarbonate and polyamides. With glass reinforcement, the notched impact strength of Arnite increases significantly. For applications with higher demands on toughness, special impact modified Arnite grades exist.

For optimum performance and maximum lifetime in applications that are subjected to long-term loading, engineering plastics must have a high creep resistance (i.e. a low plastic deformation under load). Polyesters have excellent creep properties, making them very suitable for various construction purposes or other applications where large stresses are applied to the plastics parts for very long durations.

Creep resistance of Arnite A (AV2 372) and Arnite T (TV4 261) vs.
30% GF reinforced polyamide 6 and 35% GF reinforced polyamide 66

In addition, Arnite compounds show excellent fatigue properties.