Product Categories

Download Data Sheet

FREE Technical Articles

Essential Article for Medical Manufacturers
Paper published in IAPD details the important considerations medical manufacturers must account for when developing products.
Get Your FREE Article.

Advancement of Thermoplastics in Aerospace
Get Your FREE Article.

Ensinger Food Grade Plastics - History of Innovation
Get Your FREE Article.

High Performance > 300°F | Polyetheretherketone (PEEK)


TECAPEEK PEEK material (chemically known as polyetheretherketone) is manufactured by Ensinger in standard stock shapes for machining, and is extruded in sheet, rod and tube using Victrex® PEEK polymer.   Well known for its high temperature resistance, PEEK is a unique semi-crystalline, engineering thermoplastic that also offers excellent chemical compatibility.  Parts manufactured from high temperature plastic PEEK polymer can operate at temperatures up to 260°C (480°F) and has a melting point around 341°C (646°F). PEEK plastic is often used in hot water or steam environments while maintaining physical properties such as flexural and tensile strength on a high level.  Polyetheretherketone is often viewed as one of the engineering thermoplastics that tends to command a high price, however experienced users have come to realize the added value that PEEK materials bring, by offering the possibility of manufacturing parts that are lighter, stronger and able to survive longer in harsh environments.

  • Excellent flexural, impact, and tensile characteristics
  • Very high continuous working temperature
  • Very high heat deflection temperature
    For unreinforced TECAPEEK™, the HDT @264 psi is 152°C (306°F). The addition of 30% reinforcement results in a dramatic increase to 315°C (600°F).
  • Exceptional chemical resistance
    TECAPEEK™ is insoluble in all common solvents.
  • A superior dielectric at high temperatures and frequencies
  • Good radiation resistance
    TECAPEEK™ exhibits superior resistance to high doses of gamma radiation.
  • Outstanding wear and abrasion resistance
  • Low smoke and toxic gas emissions
  • Excellent hydrolysis resistance
    TECAPEEK™ has an excellent resistance to hydrolysis in boiling water and superheated steam (sterilization/autoclavability) at temperatures in excess of 250°C (482°F).

TECAPEEK™s exceptional property profile enables it to be utilized in many of the most critical areas in general industry, as well as in the automotive, marine, nuclear, oil well, electronics, medical and aerospace fields.

  Properties Condition Units Value
Physical Chemical Designation PEEK
Density g/cm3 1.31
Mechanical Tensile Modulus @ 73 °F PSI 650,000
Tensile Strength @ Yld @ 73 °F PSI 16,000
Tensile Strength @ Brk @ 73 °F PSI 16,000
Shear Strength @ 73 °F PSI
Elongation @ Yld @ 73 °F % 4.9
Elongation @ Brk @ 73 °F % 40
Flexural Modulus @ 73 °F PSI 600,000
Flexural Strength @ 73 °F PSI 26,000
Compressive Modulus @ 73 °F PSI 493,000
Compressive Strength @ 73 °F, 10% strain PSI 17,500
Izod (charpy) Impact Strength @ 73 °F ft-lbs/in 0.95
Rockwell Hardness @ 73 °F M (R) Scale 99
Coefficient of Friction Static
Coefficient of Friction Dynamic, 40 PSI, 50 FPM 0.20
Wear (K) Factor in3-min/ft-lbs-hr 200*10-10
Limiting PV psi-fpm 69,000
Thermal Vicat Softening Point °F
Melting Temperature °F 633
Heat Deflection Temperature @ 66 °F
Heat Deflection Temperature @ 264 °F 320
Service Temperature Intermittent °F 572
Service Temperature Long Term °F 480
Thermal Expansion (CLTE) in/in/°F 2.5*10-5
Specific Heat BTU/lb-°F
Thermal Conductivity BTU-in/hr-ft2-°F 2.01
Electrical Surface Resistivity ohms/square 1.0*1016
Volume Resistivity ohm-cm 4.9*1016
Dielectric Strength V/mil 630
Dielectric Contant @ 60 HZ, 73 °F, 50% RH 2.8
Dissipation Factor @ 60 Hz, 73 °F 0.003
Other Moisture Absorption @ 24 hrs, 73 °F % 0.02
Moisture absorption @ Saturation, 73 °F % 0.45
Flammability UL 94 V-0
Food Grade Y
Relative Cost $$ $$ $$