HPMs – High-performance materials


Polysulphone is a translucent amorphous thermoplastic with good mechanical strength and heat resistance. It is also resistant to hydrolysis and is suitable for sterilisation. Being amorphous, it is suitable for thermoforming. We deliver PSU as sheets and rods.

Physical properties
  Value Unit Test method
Specific gravity 1.24 g/cm3 DIN EN ISO 1183
Average molecular mass N/A
Water absorption, 24/96 h (23 °C) 0.06/0.1 % DIN EN ISO 62
Weather-resistance poor
Combustibility V0 UL 94 DIN EN ISO 527-2
Food safety no
Mechanical properties
  Value Unit Test method
Modulus of elasticity 2700 MPa DIN EN ISO 527-2
Tensile strength 89 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 2600 MPa DIN EN ISO 178
Flexural strength 122 MPa DIN EN ISO 178
Compressive modulus 2300 MPa EN ISO 604
Compressive strength, 1%/2% 15/28 MPa EN ISO 604
Impact strength (Charpy) 175 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) 167 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 188 °C DIN 53765
Melting point N/A
Operating temperature (instantaneous) +180 °C
Operating temperature (continuous) 160 °C
Operating temperature (minimum) N/A
Thermal expansion coefficient, 23–60 °C 6 10-5 K-1 DIN EN ISO 11359-1;2
Thermal expansion coefficient, 23–100 °C 6 10-5 K-1 DIN EN ISO 11359-1;2
Specific heat capacity 1.2 J/(g×K) ISO 22007-4:2008
Thermal conductivity 0.21 W/(m×K) ISO 22007-4:2008
Electrical properties
  Value Unit Test method
Surface resistivity 1014 DIN IEC 60093
Resistivity 1014 Ω×cm DIN IEC 60093
Dielectric strength N/A
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, plastic rods
Specific gravity 1.24 g/cm3
Service temperature N/A … 160 °C
Price category €€€+ (>€50/kg)

Special properties

  • food-grade product
  • good heat-resistance
  • good mechanical strength across a wide temperature range
  • resistance to radiation
  • good electrical insulation properties


pharmaceutical technology

Standard colours

translucent, manila

Premade pieces


Commonly known brands