UHMW-PE – Ultra-high-molecular-weight polyethylene


CERAM X® combines the best properties of ceramics and UHMW-PE. The material is designed for use in the dewatering process in paper and pulp production machines’ wire sections, and it bridges the gap between standard paper‑ and pulp‑industry products and pure ceramics. The product offers excellent wear-resistance properties without the downsides of ceramics, such as high cost and poor manageability. The material also has higher heat resistance (with a continuous service temperature of 105 °C). CeramX®’s coefficient of linear heat expansion is half that of conventional UHMW-PE, making the product an ideal choice for doctor blades, turbulence generators, suction box lids and filters in pulp‑drying sections. We deliver CERAM X® as sheets and finished components for the paper and pulp industry.

Physical properties
  Value Unit Test method
Specific gravity 1.21 g/cm3 DIN EN ISO 1183
Average molecular mass 9.2 106 g/mol
Water absorption, 24/96 h (23 °C) % DIN EN ISO 62
Weather-resistance poor
Combustibility HB UL 94 DIN EN ISO 527-2
Food safety no
Mechanical properties
  Value Unit Test method
Modulus of elasticity N/A
Tensile strength ≥20 MPa DIN EN ISO 527-2
Elongation at break N/A
Tensile strength at break >120 % DIN EN ISO 527-2
Flexural modulus ~680 MPa DIN EN ISO 178
Flexural strength N/A
Compressive modulus N/A
Compressive strength, 1%/2% N/A
Impact strength (Charpy) N/A
Notch impact strength (Charpy) ≥130 kJ/m2 DIN EN ISO 179-1eA
Notch impact strength (Izod) kJ/m2 DIN EN ISO 180/2A
Toughness (ball pressure) 38 MPa ISO 2039-1
Toughness (Shore D) 67–70 Sh D DIN EN ISO 868
Wear-resistance ~65 % Sand-Slurry
Coefficient of friction (against steel) ~0.15 μ
Thermal properties
  Value Unit Test method
Glass-transition temperature N/A
Melting point N/A
Operating temperature (instantaneous) +115 °C
Operating temperature (continuous) 105 °C
Operating temperature (minimum) -200 °C
Thermal expansion coefficient, 23–60 °C N/A
Thermal expansion coefficient, 23–100 °C 8 10-5 K-1 DIN EN ISO 11359-1;2
Specific heat capacity N/A
Thermal conductivity ~0.5 W/(m×K) ISO 22007-4:2008
Electrical properties
  Value Unit Test method
Surface resistivity ≥1013 DIN IEC 60093
Resistivity ≥1015 Ω×cm DIN IEC 60093
Dielectric strength 45 kV/mm DIN EN 60243-1
CTI value N/A
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 sheets, ready-made components for the pulp and paper industry
Specific gravity 1.21 g/cm3
Service temperature -200 … 105 °C
Price category €€ (€8–25/kg)

Special properties

  • excellent sliding- and abrasion-related properties
  • low coefficient of friction
  • longer paper-machine wire service life
  • excellent surface qualities
  • high rigidity
  • dimensional accuracy
  • good cost-efficiency
  • no risk of breakage during installation
  • good heat-resistance


mechanical design, components for paper and pulp machine wet ends (doctor blades, turbulence generators, and suction box lids), components for bottling lines

Standard colours


Premade pieces