PTFE Unfilled
Overview
What is the Material: PTFE (Teflon) Unfilled is a semi-crystalline material.
Key Material Features: This material is beneficial in applications requiring diverse chemical resistance, low friction, a wide operational temperature range, low moisture absorption, and electrical properties.
Other Considerations: Often adding fillers to PTFE increases wear and hardness.
Physical
| Property | Value | Typical ASTM Test |
|---|---|---|
| Chemical Designation | (PTFE) Polytetrafluoroethylene | |
| Trade Names (®, ™) | Teflon | |
| Color | White | |
| Density (g/cm^3) | 2.16 | D 792 |
Mechanical
| Property | Value | Typical ASTM Test |
|---|---|---|
| Modulus of Elasticity (Tensile Test) (psi) | 80000 | D 638 |
| Tensile Strength at Yield (psi) | 3190 | D 638 |
| Elongation at Break (%) | 220 | D 638 |
| Modulus of Elasticity (Flexural Test) (psi) | 72000 | D 790 |
| Compression Strength: 10% Strain (psi) | 3500 | D 695 |
| Compression Modulus (psi) | 70000 | D 695 |
| Impact Strength (Izod) (ft-lbs/in) | 3.5 | D 256 |
| Hardness (D) | 50 | D 785 |
| Coefficient of Friction (Kinetic, 40 psi, 50 fpm) | 0.05 | D 3702 |
| Coefficient of Friction (Static) | 0.07 | D 3702 |
Thermal
| Property | Value | Typical ASTM Test |
|---|---|---|
| Melting Point (°F) | 635 | D 3418 |
| Deflection Temperature (°F) (264 psi) | 135 | D 648 |
| Service Temperature Continuous (°F) | 500 | |
| Service Temperature Minimal (°F) | -328 | |
| Thermal Expansion (CLTE) (in/in/°F) | 7.50E-5 | D 696 |
| Thermal Conductivity (BTU-in/hr-ft^2-°F) | 1.39 |
Electrical
| Property | Value | Typical ASTM Test |
|---|---|---|
| Specific Surface Resistance (Ω/square) | 1.00E18 | D 257 |
| Volume Resistivity (Ω*cm) | 1.00E17 | D 257 |
| Dielectric Strength (V/mil) | 285 | D 149 |
| Dissipation Factor (1MHz) | 0.0002 | D 150 |
| Dielectric Constant (1MHz) | 2.1 | D 150 |
Other
| Property | Value | Typical ASTM Test |
|---|---|---|
| Moisture Absorption (%) (24 Hours) | 0.01 | D 570 |
| Flammability | V-0 |
The data stated are typical values intended for reference and comparison purposes only. The data should not be used as a basis for design specifications or quality control. The information is provided as a guide to the best of our knowledge and given without obligation or liability. Testing under individual application circumstances is recommended.