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Material Information

PEEK is a high performance thermoplastic that is tough, strong, rigid, and creep resistant. It offers excellent thermal, chemical, and hydrolysis resistance as well as excellent resistance to abrasion and dynamic fatigue. Its ability to run at high continuous temperature (480º F) without permanent property loss and stable electrical properties makes PEEK a good alternative to fluoropolymers in hostile environments. PEEK has also been shown to exhibit very low smoke and toxic gas emission when exposed to flame. PEEK is available in unfilled, 30% glass filled, 30% carbon filled, and bearing grade (Ketron HPV). Unfilled PEEK is an unreinforced grade that offers the highest toughness of all PEEK grades. It complies with FDA regulation for repeated food contact and is available in sheet and rod. Unfilled PEEK is also available in a natural color or black.


  • Aircraft components
  • Wire and cable coatings
  • Automotive engine parts
  • Tearings
  • Woven monofilament
  • Film
  • Microwave applications
  • Pump and valve parts
  • Chemical processing
  • Electrical components and electronics
  • Semiconductor production
  • Industrial applications


  • Superior heat resistance and high temperature performance
  • High mechanical and electrical properties over wide range of temperatures
  • Outstanding chemical resistance
  • Resistance to high pressure steam
  • Resistance to gamma radiation
  • Very low moisture absorption
  • Good wear and abrasion resistance
  • Low smoke and toxic gas emission
  • Excellent flame retardance
  • Easy to fabricate


PhysicalAstm Test MethodPEEK (Unfilled)
Density (lb/in^3)D7920.047
Specific GravityD7921.31
Water Absorption @ 24 hours (%)D5700.1
Tensile Strength (PSI)D63816,000
Tensile Modulus (PSI)D638500,000
Tensile Elongation at Break (%)D63820
Flexural Strength (PSI)D79025,000
Flexural Modulus (PSI)D790600,000
Compressive Strength (PSI)D69520,000
Compressive Modulus (PSI)D695500,000
Izod Impact (Notched), ft-lb/inD2561
Rockwell HardnessD785M100, R126
Coefficient of Thermal Expansion,
Heat Deflection Temperature 264 psi, ºFD648320
Melting Point, °FD3418644
Continous Service Temp (Operating), °F480
Thermal Conductivity, BTU-in/hr-ft² °FC1771.75
Flammability RatingUL94VO
Dielectric Strength, Short Term,
(Volts/Mil) @ .125″ Thick
Volume Resistivity (ohm-cm) @ 50% RHD2574.90 x 10^16
Dielectric Constant at 1 MHzD1503.3
Dissipation Factor at 1 MHzD1500.003

Disclosure: The information contained herein are typical values intended for reference and comparison purposes only. They should NOT be used as a basis for design specifications or quality control. Contact us for manufacturers’ complete material property datasheets. All values at 73°F (23°C) unless otherwise noted.


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