Technical Data Sheet
Safety Data Sheet
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PMMA Disc

PMMA Discs exhibit properties like optical clarity, UV resistance and high light transmittance. With over 34 variations available, these discs have widespread applications including glazing, lenses, light covers and transparent armor. The large choice of PMMA Discs we offer allows you to select the optimal grade and dimensions for your specific application.
Thickness: 1mm
Production Method: Cast
Diameter: 4mm
Technical Name: Polymethylmethacrylate
Formula: PMMA, Acrylic
Density: 1.185g/cm³
CAS Number: 9011-14-7
Transparency: Clear/Transparent
UOM Code: 185-505-66
SKU: 1000071620
Product Code: ME30-SH-000117

Tolerances

Disc
Thickness ±20%
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Tolerances

Disc
Thickness ±20%
Technical Data Sheet
Safety Data Sheet

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Material Properties for Polymers

Physical Properties
Element Value
Abbe number 57.2
Flammability HB
Radiation resistance Fair
Refractive index 1.49
Resistance to Ultra-violet Good
Limiting oxygen index( % ) 17-20
Water absorption - over 24 hours( % ) 0.2
Density( gcm⁻³ ) 1.19
Chemical Resistance
Element Value
Acids - concentrated Good-Poor
Acids - dilute Good-Poor
Alcohols Good-Poor
Alkalis Good
Aromatic hydrocarbons Poor
Greases and Oils Good
Halogenated Hydrocarbons Poor
Halogens Poor
Ketones Poor
Electrical Properties
Element Value
Dielectric constant @1MHz 2.6
Dissipation factor @ 1MHz 0.014
Dielectric strength( kV mm⁻¹ ) 15
Surface resistivity( Ohm/sq ) 10¹⁴
Volume resistivity( Ohmcm ) 2-14 x 10¹⁵
Mechanical Properties
Element Value
Hardness - Rockwell M92-100
Poisson's ratio 0.35-0.4
Elongation at break( % ) 2.5-4
Tensile modulus( GPa ) 2.4-3.3
Izod impact strength( J m⁻¹ ) 16-32
Tensile strength( MPa ) 80
Thermal Properties
Element Value
Heat-deflection temperature - 0.45MPa( C ) 105
Heat-deflection temperature - 1.8MPa( C ) 95
Lower working temperature( C ) -40
Upper working temperature( C ) 50-90
Specific heat( J K⁻¹ kg⁻¹ ) 1400-1500
Thermal conductivity( W m⁻¹ K⁻¹ ) 0.17-0.19@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 70-77
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