HPMs – High-performance materials


Polyether ether ketone is a partially crystalline aromatic polymer with special qualities. It retains its mechanical strength at high temperatures. In addition, PEEK has high impact strength at low temperatures. The product is highly resistant to mechanical stress, chemicals and creep, and it has good sliding-related and wear properties. This combination of qualities makes it the perfect choice for demanding applications. We deliver PEEK as plastic sheets and rods and as hollow rods.

Physical properties
  Value Unit Test method
Specific gravity 1.31 g/cm3 DIN EN ISO 1183
Average molecular mass N/A
Water absorption, 24/96 h (23 °C) 0.02/0.03 % DIN EN ISO 62
Weather-resistance poor
Combustibility V0 UL 94 DIN EN ISO 527-2
Food safety yes
Mechanical properties
  Value Unit Test method
Modulus of elasticity 4200 MPa DIN EN ISO 527-2
Tensile strength 116 MPa DIN EN ISO 527-2
Elongation at break 5 % DIN EN ISO 527-2
Tensile strength at break 15 % DIN EN ISO 527-2
Flexural modulus 4200 MPa DIN EN ISO 178
Flexural strength 175 MPa DIN EN ISO 178
Compressive modulus 3400 MPa EN ISO 604
Compressive strength, 1%/2% 23/43 MPa EN ISO 604
Impact strength (Charpy) does not break kJ/m2 DIN EN ISO 179-1eU
Notch impact strength (Charpy) 4 kJ/m2 DIN EN ISO 179-1eA
Notch impact strength (Izod) kJ/m2 DIN EN ISO 180/2A
Toughness (ball pressure) 253 MPa ISO 2039-1
Toughness (Shore D) N/A
Wear-resistance N/A
Coefficient of friction (against steel) N/A
Thermal properties
  Value Unit Test method
Glass-transition temperature 150 °C DIN 53765
Melting point 341 °C DIN 53765
Operating temperature (instantaneous) +300 °C
Operating temperature (continuous) 260 °C
Operating temperature (minimum) -40 °C
Thermal expansion coefficient, 23–60 °C 5 10-5 K-1 DIN EN ISO 11359-1;2
Thermal expansion coefficient, 23–100 °C 5 10-5 K-1 DIN EN ISO 11359-1;2
Specific heat capacity 1.1 J/(g×K) ISO 22007-4:2008
Thermal conductivity 0.27 W/(m×K) ISO 22007-4:2008
Electrical properties
  Value Unit Test method
Surface resistivity 1014 DIN IEC 60093
Resistivity 1015 Ω×cm DIN IEC 60093
Dielectric strength 73 kV/mm DIN EN 60243-1
CTI value 125 V DIN EN 60112
Optical properties
  Value Unit Test method
Light transmittance N/A
Refractive index N/A
Optical errors N/A
Abrasion-resistance, 100 rotations with 500 g N/A

Additional downloads

Delivery selection plastic sheets, plastic rods, hollow bars
Specific gravity 1.31 g/cm3
Service temperature -40 … 260 °C
Price category €€€+ (>€50/kg)

Special properties

  • high heat-resistance
  • excellent mechanical properties
  • food-grade product
  • good impact strength also at low temperatures
  • low creep
  • good sliding- and wear-related properties
  • electrically insulating nature
  • good dimensional accuracy


chemical industry, electronics industry, aviation industry, food and drinks industry

Standard colours

natural (beige), black

Special colours

red, Medical colours

Premade pieces


Commonly known brands


Further information

Note: Reinforced, PTFE-containing, and medical-grade PEEK versions are available, along with versions that are detectable with metal detectors.