Polytetrafluoroethylene (PTFE) is a high-performance fluoropolymer known for its unique combination of properties, making it indispensable in industries ranging from medical to chemical processing. Its key attributes include exceptional chemical resistance, low friction, thermal stability, and electrical insulation. PTFE is also FDA-compliant, recyclable, and maintains performance across extreme temperatures. Below, we break down its material properties in detail for purchasers evaluating its suitability for specific applications, including custom PTFE parts.
Key Points Explained:
-
Physical Properties
- Density: 2.14–2.20 g/cm³ (lightweight yet durable).
- Appearance: White and opaque.
- Water Absorption: <0.01% after 24 hours (ideal for humid or wet environments).
- Refractive Index: 1.38 (useful in optical applications).
-
Mechanical Properties
- Tensile Strength: 20–40 MPa (2,900–5,800 psi), balancing flexibility and strength.
- Elongation at Break: 200–500% (highly pliable under stress).
- Coefficient of Friction: 0.05–0.10 (self-lubricating, reducing wear).
- Impact Resistance: 3.5 ft-lbs/in (Izod notch), suitable for dynamic loads.
-
Thermal Properties
- Melting Point: 327°C (621°F).
- Continuous Service Temperature: Up to 260°C (500°F) in air.
- Thermal Expansion: 8.9 × 10⁻⁵ in/in/°F (stable across temperature fluctuations).
- Flammability: UL94 V0 rated (self-extinguishing).
-
Chemical Resistance
- Inert to nearly all chemicals, including strong acids (e.g., sulfuric, nitric) and solvents.
- FDA-compliant for food, pharmaceutical, and medical uses.
-
Electrical & Environmental Performance
- Excellent insulator across wide frequency/temperature ranges.
- UV and weathering resistant (long-term outdoor use).
- Recyclability: Eco-friendly despite higher CO₂ footprint (7.06–7.8 kg/kg).
-
Limitations
- Poor radiation resistance.
- Lower tensile strength compared to metals (suited for non-load-bearing custom PTFE parts).
For purchasers, PTFE’s blend of chemical inertness, thermal stability, and low friction makes it ideal for seals, linings, and insulating components. Its recyclability aligns with sustainability goals, though cost-effectiveness depends on application-specific needs. Would your project benefit from its unique balance of properties?
Summary Table:
| Property Category | Key Characteristics |
|---|---|
| Physical | Density: 2.14–2.20 g/cm³, Water Absorption: <0.01%, Refractive Index: 1.38 |
| Mechanical | Tensile Strength: 20–40 MPa, Elongation at Break: 200–500%, Coefficient of Friction: 0.05–0.10 |
| Thermal | Melting Point: 327°C, Continuous Service Temp: 260°C, Thermal Expansion: 8.9 × 10⁻⁵ in/in/°F |
| Chemical | Inert to most chemicals, FDA-compliant |
| Electrical/Environmental | Excellent insulator, UV/weather resistant, Recyclable |
| Limitations | Poor radiation resistance, lower tensile strength vs. metals |
Need PTFE components tailored to your project? KINTEK specializes in precision-crafted PTFE seals, liners, and labware for industries like semiconductor, medical, and chemical processing. Whether you require prototypes or high-volume orders, our custom fabrication ensures optimal performance. Contact us today to discuss your requirements and leverage PTFE’s unparalleled properties!