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PSU is an amorphous thermoplastic. PSU is flame-retardant, has very low smoke development and is self-extinguishing.




  • Very good dimensional stability
  • Low moisture absorption
  • Flame-retardant and self-extinguishing
  • Low smoke development
  • Good resistance to high-energy radiation
  • Exceptionally low radiation in the microwave range
  • High strength, stiffness and hardness over a wide temperature range
  • Good machinability
  • Good thermoformability
  • Good adhesive properties
  • Good weldability
  • High continuous operating temperature
  • Low coefficient of linear expansion
  • Good electrical insulation properties


PSU can be machined with conventional machines and tools. PSU can be processed in numerous ways, e.g. turning, milling, sawing, planing. The material is used among other things in parts that must withstand higher temperatures or high mechanical loads.

Areas of application

  • Medical technology
  • Mechanical engineering
  • Electrical engineering
  • Precision engineering
  • Plant engineering


Product catalog download

You can find our entire range of materials and products at a glance in our catalog.


KTK Kunststofftechnik product catalog


Questions? We're happy to help:

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F +49 (0)89 84058896

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