PEEK (Polyetheretherketone)

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PEEK Characteristics

Polyetheretherketone (PEEK) is a high-performance thermoplastic material that is an excellent choice for demanding applications. It withstands high temperatures and is resistant to chemicals and radiation. PEEK can be used continuously in operating temperatures up to 480° F and in hot water or steam with no compromise to its physical properties.

PEEK offers wear, moisture and chemical resistance along with exceptional strength, dimensional stability and stiffness. Because of its high-performance, PEEK is used in many challenging environments in the medical, nuclear, chemical processing and aerospace industries. PEEK is easily machined.

  • Superior strength-to-weight ratio
  • Creep-resistant
  • Long-wearinghere to help 200
  • Withstands very high temperatures
  • Radiation- and chemical-resistant
  • Low water absorption

Applications for PEEK

  • Semiconductor water handling components
  • Medical instruments
  • Aerospace components
  • Automotive engine parts
  • Compressor seals
  • Wear rings
  • Bearings

Contact a Dielectric Manufacturing knowledge expert to discuss the use of Polyetheretherketone (PEEK) thermoplastic for fabrication of your plastic parts. Call 800-367-9122 or email

We also are a distributor of PEEK material. Contact us to discuss how we can fulfill your material needs.

Polyetheretherketone (PEEK) Material Properties

Density1.23e3 - 1.32e3kg/m^30.047 - 0.0477lb/in^3
Yield Strength8.7e7 - 9.52e7Pa12.6 - 13.8ksi
Tensile Strength7.03e7 - 1.03e8Pa10.2 - 14.9ksi
Elongation0.3 - 1.5% strain30 - 150% strain
Hardness (Vickers)2.56e8 - 2.79e8Pa26.1 - 28.5HV
Impact Strength (un-notched)1.9e5 - 2e5J/m^290.4 - 95.2ft.lbf/in^2
Fracture Toughness2.73e6 - 4.3e6Pa/m^0.52.49 - 3.91ksi/in^0.5
Young's Modulus3.76e9 - 3.95e9Pa0.545 - 0.57310^6 psi
Max Service Temperature239 - 260°C462 - 500°F
Melting Temperature322 - 346°C612 - 655°F
Insulator or ConductorInsulatorInsulator
Specific Heat Capability1.34E+03J/kg °C0.32BTU/lb. °F
Thermal Expansion Coefficient5e-5 - 6e-5strain/°C27.8 - 33.3µstrain/°F
CO2 Footprint12.3 - 13.6kg/kg12.3 - 13.6lb/lb

Dielectric Manufacturing, Richfield, Wisconsin USA

PEEK Material Properties Provided By Dielectric Manufacturing, Richfield, Wisconsin

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