PMMA – Polymethyl methacrylate


PMMA XT, or acrylic, is an extruded, amorphous thermoplastic, which can be used to replace glass. Its impact strength is about 20 times higher than that of glass. It can be fabricated into elegant decorative items. It can also be used for applications such as display boards as an alternative to glass. PMMA is suitable for thermoforming, and the machined surfaces can be polished. Being highly weather‑resistant, it is well suited to outdoor applications. Though slightly less expensive than the cast material, extruded PMMA is not as suitable for thermoforming. We deliver PMMA XT as plastic sheets, tubes 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 3200 MPa DIN EN ISO 527-2
Tensile strength 70 MPa DIN EN ISO 527-2
Elongation at break N/A
Tensile strength at break 4 % DIN EN ISO 527-2
Flexural modulus 3300 MPa DIN EN ISO 178
Flexural strength 115 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) 235 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 N/A
Operating temperature (instantaneous) +90 °C
Operating temperature (continuous) 70 °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 1.47 J/(g×K) ISO 22007-4:2008
Thermal conductivity 0.18 W/(m×K) ISO 22007-4:2008
Electrical properties
  Value Unit Test method
Surface resistivity 1016 DIN IEC 60093
Resistivity 1013 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 … 70 °C
Price category € (€3–7/kg)

Special properties

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


alternatives to glass, illuminated advertising boards, sound barriers, display boards

Standard colours

clear, opal

Special colours

request a colour chart

Premade pieces


Commonly known brands

Altuglas®, Perspex®, Plazcryl®, Plexiglas® XT, Polycasa XT, SETACRYL®