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MK Plastics Acrylic

Tight tolerance acrylic is ideal for Model making. It has unrivalled optical qualities.

Emkay Plastics Ltd stocks tight tolerance acrylic in the following thickness:

0.2mm 500 x 440mm 0.5mm 1000 x 1000mm
0.8mm 1000 x 1000mm 1.0mm 1000 x 1000mm
1.5mm 1000 x 1000mm 2.0mm 1000 x 1000mm
2.5mm 1000 x 1000mm 3.0mm 1000 x 1000mm
4.0mm 1000 x 1000mm 5.0mm 1000 x 1000mm

Tolerances are +/-0.2mm 

TIGHT TOLERANCE CAST ACRYLIC

This material is a precision cast acrylic sheet with high optical clarity and a tight tolerance not found in normal cast acrylics.

It is available in 0.2 to 5.0mm thickness.

Properties Method Unit Normal Grade Hard Coat Grade
Specific Gravity ASTM D-792   1.19 1.19
Optical        
Refractive Index ASTM D-542   1.49 1.49 (1.54)
Mechanical        
Elongation ASTM D-638 % 5 5
Tensile Rupture Strength ASTM D-638 kg/cm2 750 650
Flexural Rupture Strength ASTM D-790 kg/cm2 1200 800
Thermal        
Heat Distortion Temperature ASTM D-648 °C 110 110
Maximum recommended continuous temperature   °C 80 80
Coefficient of Thermal Expansion ASTM D-696 cm/cm/°C 7 x 10-5 7 x10-5
Specific Heat ASTM D-638 cal/gr°C 0.35 0.35
Durability        
Hot Resistance 80°C x 100hr   No Change No Change
Cold Resistance -40°C x 100hr   No Change No Change
Humid Resistance 60°Cx90%x100hr   No Change No Change
Thermal  Cycle

-40°C <-> 80°C
(10 cycles) 

  No Change No Change
Electrical        
Surface Resistivity     1016 1016
Pencil Hardness     2H 6~8H
Chemical        
Methyl Alcohol (50%)     No Change No Change
Ethyl Alcohol (50%)     No Change No Change
Soap Aqua Solution     No Change No Change 
Toluene     Dissolved No Change
 Acetone     Dissolved No Change
 Benzene     Swollen  No Change
Ethylene Dichloride     Dissolved No Change
Adhesion  K-5400     100/100
Flammability UL Standard >=0.8mm Thickness 94HB 94HB