PMMA – Polymethyl methacrylate


PMMA GS is a cast, amorphous thermoplastic. While its properties are similar to those of extruded material, it is easier to machine and better suited to thermoforming. The cast material is also available in a wider range of colours and surface finishes. We deliver PMMA GS as plastic sheets, hollow rods and rods.

Physical properties
  Value Unit Test method
Specific gravity 1.19 g/cm3 DIN EN ISO 1183
Average molecular mass N/A
Water absorption, 24/96 h (23 °C) 0.2 % DIN EN ISO 62
Weather-resistance good
Combustibility HB UL 94 DIN EN ISO 527-2
Food safety yes
Mechanical properties
  Value Unit Test method
Modulus of elasticity 3400 MPa DIN EN ISO 527-2
Tensile strength 75 MPa DIN EN ISO 527-2
Elongation at break N/A
Tensile strength at break 6 % DIN EN ISO 527-2
Flexural modulus 3200 MPa DIN EN ISO 178
Flexural strength 120 MPa DIN EN ISO 178
Compressive modulus N/A
Compressive strength, 1%/2% N/A
Impact strength (Charpy) 17 kJ/m2 DIN EN ISO 179-1eU
Notch impact strength (Charpy) 2 kJ/m2 DIN EN ISO 179-1eA
Notch impact strength (Izod) kJ/m2 DIN EN ISO 180/2A
Toughness (ball pressure) N/A
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 280 °C DIN 53765
Operating temperature (instantaneous) +90 °C
Operating temperature (continuous) 80 °C
Operating temperature (minimum) N/A
Thermal expansion coefficient, 23–60 °C 7 10-5 K-1 DIN EN ISO 11359-1;2
Thermal expansion coefficient, 23–100 °C N/A
Specific heat capacity 2.16 J/(g×K) ISO 22007-4:2008
Thermal conductivity 0.19 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 30 kV/mm DIN EN 60243-1
CTI value N/A
Optical properties
  Value Unit Test method
Light transmittance 92
Refractive index 1.492
Optical errors N/A
Abrasion-resistance, 100 rotations with 500 g N/A

Additional downloads

Delivery selection plastic sheets, plastic tubes, plastic rods
Specific gravity 1.19 g/cm3
Service temperature N/A … 80 °C
Price category €€ (€8–25/kg)

Special properties

  • good impact-resistance in comparison with glass
  • good optical properties
  • good light transmittance (92 %)
  • high suitability for thermoforming
  • suitability for machining
  • weather-resistance
  • suitability for the food industry
  • UV-resistance


windscreens for boats , ice-hockey rinks, objects processed via thermoforming

Standard colours

clear, opal

Special colours

request a colour chart

Premade pieces


Commonly known brands

Altuglas®, Perspex®, Plazcryl®, Plexiglas® GS, Polycasa Cast, SETACRYL®