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Duratron® PAI


Duratron® PAI is a family of the highest performing, melt processable plastics, characterized by superior resistance to elevated temperatures. These plastic grades are capable of performing under severe stress conditions at continuous temperatures to 260 °C (500 °F). Parts machined from Duratron® PAI stock shapes provide greater compressive strength and higher impact resistance than most advanced engineering plastics. An amorphous material with a Tg (glass transition temperature) of 537°F (280°C), Duratron® PAI’s extremely low coefficient of linear thermal expansion and high creep resistance deliver excellent dimensional stability over its entire service range. A post-curing cycle is sometimes recommended for components fabricated from extruded shapes where optimization of chemical resistance and/or wear performance is required. For large shapes or custom geometries like tubular bar, compression molded Duratron® PAI shapes offer designers the greatest economy and flexibility.

Common applications of Duratron® PAI products include electrical connectors, bearing cages, mandrels, chip nests and sockets, and labyrinth seals.

Products in the Duratron® PAI family

Duratron® T4301 PAI AE

Primarily used for wear and friction parts in aerospace engineering, offers a very low expansion rate, low coefficient of friction, high flexural modulus, and exhibits little or no slip-stick in use.

Material properties at a glance

  • High strength and stiffness
  • Low expansion rate
  • Excellent dimensional stability and machinability

Duratron® T4203 PAI AE

With the most superior impact strength and exceptional machinability, is often used for precision parts in high-tech aerospace equipment.

Material properties at a glance

  • Superior impact strength and dimensional stability
  • Exceptional machinability
  • High temperature resistance

Duratron® T7530 PAI

A compression molded, 30% carbon fiber-reinforced polyamide-imide with outstanding strength and stiffness, as well as the lowest coefficient of thermal expansion of all PAI materials.

Material properties at a glance

  • Lowest coefficient of thermal expansion of all PAIs
  • 30% carbon fiber-reinforced
  • Outstanding strength and stiffness in non-abrasive wear applications