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.

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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

enquire

Commonly known brands

Plazcast-led