PMMA Hard

Coated acrylic –

PMMA Hard

PMMA Hard is a coated acrylic. The coating considerably improves the material’s abrasion resistance without affecting its excellent optical properties. The material is suitable for demanding applications in which high resistance to abrasion is required. Acrylic is inherently harder than PC, so it is slightly more prone to breaking than polycarbonate, but it is still seven times more durable than glass. The material is commonly used in noise barriers and ice-hockey rinks. We deliver PMMA Hard as plastic sheets.

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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) – % DIN EN ISO 62
Weather-resistance –
Combustibility – UL 94 DIN EN ISO 527-2
Food safety –
Mechanical properties
  Value Unit Test method
Modulus of elasticity 3300 MPa DIN EN ISO 527-2
Tensile strength 75 MPa DIN EN ISO 527-2
Elongation at break N/A
Tensile strength at break 104.5 % DIN EN ISO 527-2
Flexural modulus 3300 MPa DIN EN ISO 178
Flexural strength N/A
Compressive modulus N/A
Compressive strength, 1%/2% N/A
Impact strength (Charpy) 12 kJ/m2 DIN EN ISO 179-1eU
Notch impact strength (Charpy) N/A
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 N/A
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 1.47 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 N/A
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 1.429
Optical errors N/A
Abrasion-resistance, 100 rotations with 500 g – % haze ANSI Z26.1
Delivery selection plastic sheets
Specific gravity 1.19 g/cm3
Service temperature N/A … 80 °C
Price category

Special properties

  • good abrasion-resistance
  • dimensional accuracy
  • UV-resistance
  • greater hardness than PC
  • light transmittance of 92 %
  • lightness
  • low weight in comparison with glass

Applications

noise barriers, ice-hockey rinks, abrasion-resistant glazing

Standard colours

clear

Special colours

upon special request

Premade pieces

enquire

Commonly known brands

KASI-GL, PLEXIGLAS® Optical HC

Further information

Note: PC Hard is available with various coating options, including one-sided, anti-fog, anti-graffiti, anti-static and non-reflective. Further information on request.