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DESCRIPTION
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 also make it an ideal material for certain transparent structural applications.
KEY PROPERTIES
- High impact strength
- Excellent strength retention at elevated temperatures
- High tensile, shear and flexural strength
- High modulus of elasticity
- Low deformation under load
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- Excellent creep and cold flow resistance
- Low coefficient of thermal expansion
- Good electrical insulation properties
- Easy to fabricate & machine
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| TYPICAL PROPERTIES OF POLYCARBONATE |
| PHYSICAL |
| ASTM or UL test |
Property |
Polycarbonate |
| D792 |
Density (lb/in3)
(g/cm3) |
0.0433
1.23 |
| D570 |
Water Absorption, 24 hrs (%) |
0.12 |
| MECHANICAL |
| D638 |
Tensile Strength (psi) |
9,500 |
| D638 |
Tensile Modulus (psi) |
320,000 |
| D638 |
Tensile Elongation at Break (%) |
60 |
| D790 |
Flexural Strength (psi) |
15,000 |
| D790 |
Flexural Modulus (psi) |
375,000 |
| D695 |
Compressive Strength (psi) |
12,000 |
| D695 |
Compressive Modulus (psi) |
240,000 |
| D785 |
Hardness, Rockwell |
M70/R118 |
| D256 |
IZOD Notched Impact (ft-lb/in) |
13 |
| THERMAL |
| D696 |
Coefficient of Linear Thermal Expansion
(x 10-5 in./in./°F) |
3.9 |
| D648 |
Heat Deflection Temp (°F/°C) at 264 psi |
270/132 |
| D3418 |
Glass Transition Temp (°F/°C) |
293/145 |
| - |
Max Operating Temp (°F/°C) |
250/121 |
| C177 |
Thermal Conductivity
(BTU-in/ft2-hr-°F)
(x 10-4 cal/cm-sec-°C) |
1.33
6.93 |
| UL94 |
Flammability Rating |
H-B/V-0 |
| ELECTRICAL |
| D149 |
Dielectric Strength (V/mil) short time, 1/8” thick |
390 |
| D150 |
Dielectric Constant at 60 Hz |
3.17 |
| D150 |
Dissipation Factor at 60 Hz |
0.0009 |
| D257 |
Volume Resistivity (ohm-cm) at 50% RH |
1016 |
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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.
All values a 73°F (23°C) unless otherwise noted.
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