PS – Polystyrene


Standard polystyrene is a relatively brittle but rigid plastic. In contrast, impact-resistant polystyrene is resistant to sudden impact because of the butadiene added to it. Polystyrene is usually fairly susceptible to weather factors. In addition to impact‑resistant polystyrene, there are other special versions, including fire-retardant, conductive and for use in outdoor materials. We deliver PS as plastic sheets.

Physical properties
  Value Unit Test method
Specific gravity 1.05 g/cm3 DIN EN ISO 1183
Average molecular mass N/A
Water absorption, 24/96 h (23 °C) N/A
Weather-resistance poor
Combustibility HB UL 94 DIN EN ISO 527-2
Food safety no
Mechanical properties
  Value Unit Test method
Modulus of elasticity 1670 MPa DIN EN ISO 527-2
Tensile strength 20 MPa DIN EN ISO 527-2
Elongation at break N/A
Tensile strength at break 42 % DIN EN ISO 527-2
Flexural modulus 1800 MPa DIN EN ISO 178
Flexural strength 32 MPa DIN EN ISO 178
Compressive modulus N/A
Compressive strength, 1%/2% N/A
Impact strength (Charpy) N/A
Notch impact strength (Charpy) 10 kJ/m2 DIN EN ISO 179-1eA
Notch impact strength (Izod) kJ/m2 DIN EN ISO 180/2A
Toughness (ball pressure) 80 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 N/A
Melting point 91 °C DIN 53765
Operating temperature (instantaneous) +80 °C
Operating temperature (continuous) 70 °C
Operating temperature (minimum) -20 °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 0.16 W/(m×K) ISO 22007-4:2008
Electrical properties
  Value Unit Test method
Surface resistivity 1013 DIN IEC 60093
Resistivity 1016 Ω×cm DIN IEC 60093
Dielectric strength 155 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
Specific gravity 1.05 g/cm3
Service temperature -20 … 70 °C
Price category € (€3–7/kg)

Special properties

  • good rigidity but brittle
  • poor weather-resistance
  • suitability for vacuum packaging


shower cubicle walls, signposts, protective plastic for pictures, advertising products, objects for vacuum forming

Standard colours

white, black, clear, mirror

Special colours

RAL K7, minimum order quantities on the basis of colour

Premade pieces