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Polycarbonate Specifications

904 West 6th Street, Shiner, Texas 77984 USA
Phone: 1-361-594-2941     Fax: 1-361-594-2349     E-Mail:


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Unfilled Polycarbonate is a tough, transparent engineering thermoplastic which offers very high impact strength and high modulus of elasticity. It also has a high heat deflection temperature and absorbs very little moisture. These properties, plus good low frequency and high voltage insulating characteristics, make polycarbonate a prime material for electrical and electronic components. Its strength, impact resistance and transparency (unfilled grades only) also make it an ideal material for certain transparent structural applications.

Zelux® M is machine-grade polycarbonate, while Zelux® W is window-clear material for applications where transparency is an important consideration.

( see also PC-300/350 Anti-Static and Zelux® Static Control Polycarbonates )

Glass fibers may be added in various amounts (10%, 20%, 30% and 40%) to increase tensile strength, stiffness, compressive strength, and lower the thermal expansion coefficient. NOTE: Glass-filled polycarbonate is typically NATURAL (greenish white) in color, and is sometimes also available in BLACK color. Properties for 30% glass-filled polycarbonate are shown below for reference. Contact us for properties of other grades.

• high impact strength   • excellent strength retention at elevated temperatures   • high tensile, shear, and flexural strength   • high modulus of elasticity   • low deformation under load   • excellent creep and cold flow resistance   • low coefficient of thermal expansion   • good electrical insulation properties   • easy to fabricate & machine  

Polycarbonate exhibits a broad range of outstanding properties for applications in: • electrical connectors   • brush holders   • coil bobbins & forms   • insulators   • relay components   • dialysis equipment parts   • medical tubing  • gamma sterilizable reusables  • instrument covers  • covers  • handles  • rollers  • machine guards  • fittings 

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ASTM or UL test Property Unfilled 30% Glass
D792 Density (lb/in³)
D570 Water Absorption, 24 hrs (%) 0.12 0.12
D638 Tensile Strength (psi) 9,500 19,000
D638 Tensile Modulus (psi) 320,000 -
D638 Tensile Elongation at Break (%) 60 10
D790 Flexural Strength (psi) 15,000 23,000
D790 Flexural Modulus (psi) 375,000 1,100,000
D695 Compressive Strength (psi) 12,000 18,000
D695 Compressive Modulus (psi) 240,000 500,000
D785 Hardness, Rockwell M70 / R118 M92
D256 IZOD Notched Impact (ft-lb/in) 13 2
D696 Coefficient of Linear Thermal Expansion
(x 10-5 in./in./°F)
3.9 1.2
D648 Heat Deflection Temp (°F / °C)
at 264 psi

270 / 132

295 / 146
D3418 Glass Transition Temp (°F / °C) 293 / 145 300 / 149
- Max Operating Temp (°F / °C) 250 / 121 270 / 132
C177 Thermal Conductivity
(x 10-4 cal/cm-sec-°C)


UL94 Flammability Rating H-B / V-0* H-B / V-0*
D149 Dielectric Strength (V/mil) short time, 1/8" thick 390 470
D150 Dielectric Constant at 60 Hz 3.17 3.35
D150 Dissipation Factor at 60 Hz 0.0009 0.0011
D257 Volume Resistivity (ohm-cm)at 50% RH 1016 1016
* UL94 Rating depends upon thickness and manufacturer!

NOTE: The information contained herein are typical values intended for reference and comparison purposes only. They should NOT be used as a basis for design specifications or quality control. Contact us for manufacturers' complete material property datasheets.
All values at 73°F (23°C) unless otherwise noted.

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Boedeker Plastics, Inc.
904 West 6th Street, Shiner, Texas 77984 USA
USA TOLLFREE : 1-800-444-3485
Phone: 1-361-594-2941     Fax: 1-361-594-2349     E-Mail:

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