Formex® Characteristics
Formex® is a cost-effective electrical insulator and barrier. It can be die cut, heat formed, thermoformed and machined. Formex® can be folded repeatedly without cracking or splitting. It can also be scored and folded to fabricate 3-D parts.
This flame-retardant polypropylene thermoplastic material offers superior dielectric strength and chemical resistance. It has a UL 94V-O flame class rating and can withstand continuous use temperatures up to 239 degrees Fahrenheit. Characteristics include:
Excellent dielectric strength- UL 94V-O flame class rating
- Superior score and folding ability
- Economical
Applications for Formex®
- Electrical insulation
- Barriers
- Electrical switch gear
- Air flow components
Contact a Dielectric Manufacturing knowledge expert to discuss the use of Formex for electrical insulation for your application. Call 800-367-9122 or email sales@dielectricmfg.com.
Formex Polypropylene Material Properties
| Property | Metric | units | English | units | ||
|---|---|---|---|---|---|---|
| General | ||||||
| Density | 982 - 1.16e3 | kg/m^3 | 0.0355 - 0.0418 | lb/ft^3 | ||
| Mechanical | ||||||
| Yield Strength | 2.37e7 - 3.15e7 | Pa | 3.44 - 4.57 | ksi | ||
| Tensile Strength | 2.1e7 - 2.3e7 | Pa | 3.04 - 3.33 | ksi | ||
| Elongation | 0.258 - 0.705 | % strain | 25.8 - 70.5 | % strain | ||
| Hardness (Vickers) | 7.85e7 - 8.24e7 | Pa | 8 - 8.41 | HV | ||
| Impact Strength (unnotched) | 1.81e4 - 4.04e4 | J/m^2 | 8.62 - 19.2 | ft.lbf/in^2 | ||
| Fracture Toughness | 1.41e6 - 1.48e6 | Pa/m^0.5 | 1.28 - 1.134 | ksi/in^0.5 | ||
| Young's Modulus | 1.5e9 - 2.08e9 | Pa | 0.218 - 0.302 | 10^6 psi | ||
| Thermal | ||||||
| Max Service Temperature | 80.6 - 103 | °C | 177 - 218 | °F | ||
| Melting Temperature | 161 - 170 | °C | 322 - 338 | °F | ||
| Insulator or Conductor | Insulator | Insulator | ||||
| Specific Heat Capability | 1.67e3 - 1.71e3 | J/kg °C | 0.399 - 0.407 | BTU/lb. °F | ||
| Thermal Expansion Coefficient | 5.6e-5 - 6.42e-5 | strain/°C | 31.1 - 35.7 | µstrain/°F | ||
| Eco | ||||||
| CO2 Footprint | 3.43 - 3.79 | kg/kg | 3.43 - 3.79 | lb/lb | ||
| Recyclable | Yes | Yes |
