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Technical Specifications of Cast Acrylic Perspex® Sheet

Property Test Method Conditions Units Value

Physical

Relative density ISO 1183   g/cm^3 1.19
Water absorption ISO 62   5 0.2

Mechanical

Tensile strength ISO 527 5mm/min MPa 75
Elongation at break ISO 527 5mm/min 5 4
Flexural modulas ISO 178 2mm/min MPa 3210
Flexural strength at yield ISO 178 2mm/min MPa 116
Izod impact strength ISO 180/1A Notched kjm-2 n/a
Charpy impact strength ISO 179 Unnotched kjm-2 12
Rockwell hardness ISO 2039-2   M scale 102

Thermal

Vicat softening strength ISO 306   °C >110
Coefficient of thermal expansion ISO ASTM D-696   mm/m°C 0.077

Optical

Light transmission ASTM D-1003 3mm sheet 5 <92
Refractive index ISO 489/A     1.49

Electrical

Dielectric strength IEC 243   kV/mm-1 15
Surface resistivity IEC 93   Ω m-2 >10^14

Flammabiliy

BS476 Part 7       Class 3
UL 94       HB
NFP 92-307       M4 (without drips)
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