- Home
- Plastic materials
- Optical plastics
- PMMA LED

PMMA – Polymethyl methacrylate
PMMA LED
PMMA LED is a cast, amorphous thermoplastic designed for LED luminaires. While its properties are similar to those of extruded material, it is easier to machine and is better suited to thermoforming. It is especially designed for use with LED luminaires. Because PMMA LED offers high translucency and even light distribution, it produces better results than standard PMMA at a lower lighting capacity. We deliver PMMA LED as plastic sheets in various colours and as matt and glossy versions.
- Physical properties
-
Value Unit Test method Specific gravity 1.2 g/cm3 DIN EN ISO 1183 Average molecular mass – 106 g/mol Water absorption, 24/96 h (23 °C) 0.3 % 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 – MPa DIN EN ISO 527-2 Tensile strength 74 MPa DIN EN ISO 527-2 Elongation at break 5 % DIN EN ISO 527-2 Tensile strength at break – % DIN EN ISO 527-2 Flexural modulus 3350 MPa DIN EN ISO 178 Flexural strength 114 MPa DIN EN ISO 178 Compressive modulus – MPa EN ISO 604 Compressive strength, 1%/2% – MPa EN ISO 604 Impact strength (Charpy) – kJ/m2 DIN EN ISO 179-1eU Notch impact strength (Charpy) – kJ/m2 DIN EN ISO 179-1eA Notch impact strength (Izod) 1.5 kJ/m2 DIN EN ISO 180/2A Toughness (ball pressure) – MPa ISO 2039-1 Toughness (Shore D) – Sh D DIN EN ISO 868 Wear-resistance – % Sand-Slurry Coefficient of friction (against steel) – μ - Thermal properties
-
Value Unit Test method Glass-transition temperature – °C DIN 53765 Melting point – °C DIN 53765 Operating temperature (instantaneous) 90 °C Operating temperature (continuous) 80 °C Operating temperature (minimum) – °C Thermal expansion coefficient, 23–60 °C – 10-5 K-1 DIN EN ISO 11359-1;2 Thermal expansion coefficient, 23–100 °C – 10-5 K-1 DIN EN ISO 11359-1;2 Specific heat capacity – J/(g×K) ISO 22007-4:2008 Thermal conductivity – W/(m×K) ISO 22007-4:2008 - Electrical properties
-
Value Unit Test method Surface resistivity 1015 Ω DIN IEC 60093 Resistivity 1015 Ω×cm DIN IEC 60093 Dielectric strength – kV/mm DIN EN 60243-1 CTI value – V DIN EN 60112 - Optical properties
-
Value Unit Test method Light transmittance – Refractive index – Optical errors – DIN 52305/AS Abrasion-resistance, 100 rotations with 500 g – % haze ANSI Z26.1
Additional downloads
Delivery selection | plastic sheets |
---|---|
Specific gravity | 1.2 g/cm3 |
Service temperature | … 80 °C |
Price category | €€ (€8–25/kg) |
Special properties
- excellent light diffusion
- suitability for the food industry
- good impact-resistance in comparison with glass
- good UV-resistance
- visually attractive
- suitability for gluing
Applications
display boards, lighting fixtures, illuminated advertising boards, architecture, various machine parts, ships
Standard colours
opal, red, blue, yellow, green, white, oranssi
Special colours
request a colour chart
Premade pieces
Commonly known brands
Plazcast-led