Polycarbonate (Lexan®)
Typical Properties of Acrylic and Polycarbonate
|
Property |
Test Method
|
Cast Acrylic
|
Extruded Acrylic
|
Polycarbonate
|
|
Mechanical Properties |
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| Specific Gravity | ASTM D792 | 1.19 | 1.19 | 1.2 |
| Tensile Strength (p.s.i.) | ASTM D638 | 10,000 | 10,000 | 9,500 |
| Compressive Strength (p.s.i) | ASTM D695 | 18,000 | 17,000 | 12,500 |
| Rockwell Hardness | ASTM D785 | M-94 | M-93 | R-118 |
| Impact Strength 73°F Notched (ft-lbs/in) | ASTM D256 | 0.4 | 0.4 | 12-16 |
|
Thermal Properties |
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| Heat Deflection at 264psi (°F) | ASTM D648 | 210 | 195 | 270 |
| Continuous Service Temperature (°F) | – | 180 | 160 | 250 |
| Thermal Conductivity (BTU-in/ft²-hr-°F) | ASTM C177 | 1.3 | 1.3 | 1.35 |
| Coefficient of Linear Thermal Expansion (in/in/°F) | ASTM D696 | 0.000034 | 0.000040 | 0.0000375 |
|
Electrical Properties |
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| Dielectric Constant At 60HZ | ASTM D150 | 3.5 | 3.6 | 3.17 |
| Dissipation Factor At 60HZ | ASTM D150 | 0.06 | 0.06 | 0.0009 |
|
Optical |
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| Light Transmission | ATSM D1003 | 92% | 92% | > 88% |
|
Water Absorption Rates |
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| Water Absorption -24 hrs. (%) | ASTM D570 | 0.2% | 0.2% | 0.15% |
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.