Duratron® PAI

Duratron® PAI

Product Overview

  • Very high maximum allowable service temperature in air (250°C continuously)
  • Excellent retention of mechanical strength, stiffness and creep resistance over a wide temperature range
  • Superb dimensional stability up to 260°C
  • Excellent wear & frictional behaviour (particulary Duratron T4301 & T4501 PAI)
  • Very good UV-resistance
  • Exceptional resistance against high energy radiation (gamma- and X-rays)
  • Inherent low flammability

With its versatile performance capabilities and proven use in a broad range of applications, Duratron polyamide-imide (PAI) shapes are offered in extruded and compression moulded grades. For high temperature applications, this advanced material offers an excellent combination of mechanical performance and dimensional stability.

Duratron PAI is the highest performing, melt processable plastic. It has superior resistance to elevated temperatures. It is capable of performing under severe stress conditions at continuous temperatures to 260 °C (500 °F). Parts machined from Duratron stock shapes provide greater compressive strength and higher impact resistance than most advanced engineering plastics.

Duratron PAI's extremely low coefficient of linear thermal expansion and high creep resistance deliver excellent dimensional stability over its entire service range. Duratron PAI is an amorphous material with a Tg (glass transition temperature) of  280 °C (537 °F).

Electrical or High Strength Applications

  • keyboard_arrow_downProduct Overview

    Duratron T4203 PAI (colour: yellow-ochre) offers excellent compressive strength and the highest elongation of the Duratron PAI grades. It also provides electrical insulation and exceptional impact strength. This grade is commonly used for electrical connectors and insulators due to its high dielectric strength. Its ability to carry high loads over a broad temperature range makes it good for structural components such as linkages and seal rings. Duratron T4203 PAI is also an excellent choice for wear applications involving impact loading and abrasive wear.

  • keyboard_arrow_downProduct Documentation

  • keyboard_arrow_downProven Applications

    High Temperature Electrical Connectors

    Duratron T4203 PAI and Duratron T5030 PAI provide outstanding electrical performance and high temperature stability. (Prior materials: Nylon, Quadrant PPS, Duratron® PEI)

    Bearing Cages

    Duratron T4203 and T4301 PAI's low expansion rate and excellent wear resistance enable manufacturers to increase bearing speeds and extend part life. (Prior materials: Steel Cages, Hardened Steel Balls, Bronze Bushings)

    Can Mandrel

    Duratron T4203 PAI's extraordinary compressive strength and abrasion resistance permit higher production rates, longer part life, and increased support of aluminum cans during printing. (Prior materials: Nylon, UHMW, Ceramic-coated Steel)

  • keyboard_arrow_downProduct Overview

    This grade (colour: yellow-ochre) is commonly used for dies and patterns of formed metal parts or as thermal insulators. It is similar in composition to Duratron T4203 PAI, and selected when larger shapes are required.

  • keyboard_arrow_downProduct Documentation

General Purpose Wear and Friction Parts

  • keyboard_arrow_downProduct Overview

    The addition of PTFE and graphite provides higher wear resistance and lower coefficient of friction compared to the unfilled grade as well as a lower tendency to stick-slip. Duratron T4301 PAI (colour: black) also offers excellent dimensional stability over a wide temperature range. This extruded Duratron PAI grade excels in severe wear applications such as non-lubricated bearings, seals, bearing cages and reciprocating compressor parts. Compression moulded Duratron T4501 PAI is similar in composition to DuratronT4301 PAI, and is selected when larger shapes are required.

  • keyboard_arrow_downProduct Documentation

  • keyboard_arrow_downProven Applications

    Bearing Cages

    Duratron T4203 and T4301 PAI's low expansion rate and excellent wear resistance enable manufacturers to increase bearing speeds and extend part life. (Prior materials: Steel Cages, Hardened Steel Balls, Bronze Bushings)

Glass Reinforced for Improved Load Capacity

  • keyboard_arrow_downProduct Overview

    This 30% glass fiber reinforced grade (colour: black) offers higher stiffness, strength and creep resistance than the other Duratron PAI grades. It is well suited for structural applications supporting static loads for long periods of time at high temperatures. In addition, Duratron T5530 PAI exhibits superb dimensional stability up to 260°C making it extremely popular for precision parts in e.g. the electronical and semiconductor industries. The suitability of Duratron T5530 PAI for sliding parts, however, is to be carefully examined since the glass fibers tend to abrade the mating surface.

  • keyboard_arrow_downProduct Documentation

  • keyboard_arrow_downProven Applications

    Chip Nests and Sockets

    By retaining dimensional stability over a broad temperature range, parts made of Duratron T5530 PAI improve reliability of test connections and extend part life. (Prior material: Duratron® PI)

  • keyboard_arrow_downCompressive Strength Comparison

  • keyboard_arrow_downCoefficients of Linear Thermal Expansion

  • keyboard_arrow_downDimensional Change Vs. Moisture

As Duratron PAI has a relatively high moisture absorption rate (see Figure 24), parts used in high temperature service or made to tight tolerances should be kept dry prior to installation. Thermal shock resulting in deformation can occur if moisture laden parts are rapidly exposed to temperatures above 205 °C (400 °F).

Video Center

Machining Tips - Sawing

Machining Quadrant's Advanced Materials : Sawing

Machining Tips - Turning

Machining Quadrant's Advanced Materials : Turning

Machining Tips - Tool Selection

Machining Quadrant's Advanced Materials : Tooling Selection

Machining Tips - Fly Cutting & End Milling

Machining Quadrant's Advanced Materials : Fly Cutting and End Milling

Machining Tips - Drilling & Tapping

Maching Quadrant's Advanced Materials : Drilling & Tapping

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