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Makrolon® BG sheet is a hard-coated polycarbonate product designed for exceptional durability. This product is manufactured to meet the demanding bus glazing requirements for impact performance, and abrasion, chemical and UV resistance in the most demanding situations. Meets DOT/ANSI Z26.1 Item AS-4. Makrolon BG is available in clear as well as a variety of standard and custom tints.

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Technical Information

Stock Products Properties Applications Advantages

Stock Products

Sheet .236″ – .500″ 48” x 96” CTS Clear, Gray

Give us your cut-to-size dimensions. We will precision-cut these plastics to your exact size. Additional sizes and colors available upon request.


Physical PropertiesUnitsASTMResults
Density g/cm^3 D792 1.2
Mechanical PropertiesUnitsASTMResults
Tensile Strength @ yield psi D638 9500
Tensile Modulus MPa D638 340000
Tensile Elongation @Break % D638 110
Flexural Strength MPa 13500
Flexural Modulus psi 345000
Compressive Strength psi D695 12500
IZOD Impact Strength Notched kJ.m^2 D256 18
Thermal PropertiesUnitsASTMResults
Coeffcient of Linear Thermal Expansion x10^-5/K C177 3.75
Heat Deflection Temp at 264 psi °F 270
Electrical PropertiesUnitsASTMResults
Surface Resistivity @60 Hz ohms/sq D257
Volume Resistivity, 50% RH ohm-cm D250 8.2
Optical PropertiesUnitsASTMResults
3mm Transparent Clear Transmittance. Total (%) % D1003
Refractive Index % D542 1.586


  • Bus Windows


  • Half the weight of glass
  • Contributes to meeting new fuel economy standards
  • Optically clear
  • Eliminate excessive cost due to damaged glass
  • Low flammability – self extinguishing
  • Graffiti, abrasion, and weather resistant
  • Meets DOT/ANSI Z26.1 item AS-4
  • Thermal and sound insulation enhances passenger comfort
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