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Polyetheretherketone (PEEK) mechanical properties are used in aerospace applications, conveyor belts and harnesses.

peekPolyetheretherketone (PEEK) is a thermoplastic poly-condensate available in multifilament, monofilament, and spun yarns. The fibers have great mechanical properties which are maintained under extreme conditions.

PEEK fiber properties include:
  • Chemical resistant
  • Excellent thermal performance (operates from -60°C to 250°C)
  • Mechanical wear resistant
  • Low coefficient of friction
  • Biocompatible (resistant to multiple autoclave sterilizations, and resistant to radiation)
  • High vacuum compatible
  • Halogen free and RoHS compliant
  • Low flame, low smoke, and toxicity
Sample PEEK applications:
  • Filtration fabric
  • Conveyor belts
  • Wire harness
  • Hose covering and reinforcement
  • Aerospace

Technical Data

Tenacity (g/denier) 6.0 - 7.0
Elongation at break (%) 20 - 50
Shrinkage at 177°C (%)
Melting point (°F) 640
In flame Does not burn
After flame Does not burn
Chemical resistance Excellent chemical resistance
Specific gravity (g/cc) 1.3
Moisture regain (%) 0.1
Disclaimer: Values are only a guide. Actual values depend on manufacturer and exact type of yarn. Please contact our engineering team for specific values as they relate to your application.

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Additional Resources