Properties
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Typical Specifications of Parylene C
| PARYLENE C VALUE | ASTM METHOD | |
| GENERAL | ||
| Density (g/cm) | 1.289 | D1505 |
| Refractive welcome | 1.639 | |
| ELECTRICAL | ||
| Dielectric strength (voltage breakdown) volts/mil | 5,600 volts | D149 |
| Dielectric constant | D150 | |
| 60 Hz | 3.15 | |
| 1 kHz | 3.10 | |
| 1 MHz | 2.95 | |
| Dissipation factor | D150 | |
| 60 Hz | 0.020 | |
| 1 kHz | 0.019 | |
| 1 MHz | 0.013 | |
| Dielectric strength @ 25µm, short time MV/m | 220 | D149 |
| Dielectric strength @ 25µm, step-by-step MV/m | 185 | D149 |
| Volume resistivity @ 23ºC, 50% RH, ohms | 8.8 x 1016 | D257 |
| Surface resistivity @ 23ºC, 50% RH, ohms | 1 x 1014 | D257 |
| MECHANICAL | ||
| Tensile modulus, GPa | 3.2 | D882 |
| Tensile strength, MPa | 70 | D882 |
| Tensile strength, psi | 10,000 | D882 |
| Yield strength, MPa | 5.5 | D882 |
| Elongation to break, % | 200 | D882 |
| Yield elongation, % | 2.9 | D882 |
| Coefficient of friction-static | 0.29 | D1894 |
| Coefficient of friction-dynamic | 0.29 | D1894 |
| Rockwell hardness | R80 | D785 |
| THERMAL | ||
| Melting point, ºC | 290ºC | |
| Linear coefficient of expansion (10-5/ºC) | 3.5 | D696 |
| Thermal conductivity @ 25ºC (watts/meter-Kelvin) | 0.082 | C177 |
| Specific heat @ 20ºC cal/g/ºC | 0.17 | |
| BARRIER | ||
| Water absorption, % (24 hr) | 0.06 (.029″) | D570 |
| Water vapor transmission @ 37ºC (ng) | 0.0004 | D570 |
| Gas permeability cc-mil/100 in 2 – 24 hrs | ||
| N2 | 0.6 | |
| O2 | 5 | |
| CO2 | 14 | |
| H2 | 110 | |
| Moisture vapor transmission gm-mil/100 in – 24 hrs | 1 | |
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