Physical properties of Vical SA acrylic sheet

Properties Typical value(1) Test method
Specific weight g / cm 3 1.19 1.19 ASTM D792
OPTICS
Refraction index 1.49 ASTM D542
Haze (%) 2.0 MAX. ASTM D1003
Light transmission (%)    
5 mm of thickness 92 ASTM 1003
12 mm of thickness 90 ASTM 1003
Mechanical    
Tensile strength (kg/cm2) 700 ASTM D638
Elongation at rupture (%) 3 ASTM D638
Modulus of elasticity (kg/cm2) 31000 ASTM D638
Impact strength(IZOD) (Kg cm/cm) 1.5 ASTM D256
Flexural strength (kg/cm2) 1050 ASTM D790
Compressive strength (kg/cm2) 1080 ASTM D 695
Shear strength (kg/cm2) 630 ASTM D 732
Rockwell Hardness M95 - M100 ASTM D 785
Barcol Hardness 52 ASTM D 2583
Residual shrinkage (internal strain) 2% ASTM D 702
Thermal    
Forming temperature (°C) 170 - 190  
(°F) 340 - 380  
Deflection temperature (°C) 99 ASTM 648
Under load (264 psi) (°F) 196 ASTM 648
Maximum recommended (°C) 82  
Service temperature (°F) 180  
Vicat softening point (°C) 119 ASTM D 1525
Vicat softening point (°F) 246  
Coefficient of linear thermal expansion (cm/cm0C) 7.1 10-5 ASTM D 696
Thermal conductivity (cal cm/cm2 0C seg) 5 10-4 ASTM D177
Flammability (burning rate) (mm/mon) 28 ASTM D635
Self ignition temperature 910°F (490°C) ASTM D 1929
Specific heat (cal / gr 0C) 0.35  
Electric    
Dielectric strength short time (0.125") (KV/mm) 17-20 ASTM D 149
Dielectric constant    
60 Hertz 3.5 ASTM D 150
1,000 Hertz 3.2  
1,000,000 Hertz 2.7  
Dissipation factor    
60 Hertz 0.06 ASTM D 150
1,000 Hertz 0.04  
1,000,000 0.02  
Volume resistivity (ohm cm) 1015 ASTM D 257
Surface resistivity (ohm) 1016 ASTM D 257
Miscellaneous    
Water absorption (en 24 hs a 23 °C) (%) 0.2 -- 0.3 ASTM 570
Odor No  
Taste No

(1) All values are referred to 3 mm (0.118”) acrylic sheet. These values are typical and should not be taken as specification.

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