CERADUR XL®

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

CERADUR XL®

CERADUR XL® is a top-quality ultra-high-molecular-weight polyethylene (approx. 9.2 million g/mol). The use of a cross-linking agent enables longer polymer chains, thereby improving the product’s wear-resistance properties. The product is designed for use on paper production lines with speeds of up to 1,200 m/min. We deliver CERADUR XL® as sheets and finished components for the paper and pulp industry.

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Physical properties
  Value Unit Test method
Specific gravity 1.008 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 23 MPa DIN EN ISO 527-2
Elongation at break N/A
Tensile strength at break 350 % DIN EN ISO 527-2
Flexural modulus ~650 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) >80–105 kJ/m2 DIN EN ISO 179-1eA
Notch impact strength (Izod) – kJ/m2 DIN EN ISO 180/2A
Toughness (ball pressure) 48 MPa ISO 2039-1
Toughness (Shore D) 64–69 Sh D DIN EN ISO 868
Wear-resistance ~75 % Sand-Slurry
Coefficient of friction (against steel) ~0.2 μ
Thermal properties
  Value Unit Test method
Glass-transition temperature 80 °C DIN 53765
Melting point 130 °C DIN 53765
Operating temperature (instantaneous) +100 °C
Operating temperature (continuous) 80 °C
Operating temperature (minimum) -200 °C
Thermal expansion coefficient, 23–60 °C N/A
Thermal expansion coefficient, 23–100 °C 9 10-5 K-1 DIN EN ISO 11359-1;2
Specific heat capacity 1.8 J/(g×K) ISO 22007-4:2008
Thermal conductivity ~0.60 W/(m×K) ISO 22007-4:2008
Electrical properties
  Value Unit Test method
Surface resistivity N/A
Resistivity N/A
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 plastic sheets, ready-made components for the pulp and paper industry
Specific gravity 1.008 g/cm3
Service temperature -200 … 80 °C
Price category €€ (€8–25/kg)

Special properties

  • excellent resistance to wear
  • good dry-running properties

Applications

pulp and paper industry, mechanical wood processing

Standard colours

grey

Premade pieces

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