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PTFE TEFLON
Carbon Teflon
Carbon Teflon
Carbon Teflon has two types, C25 and C35. It has high abrasion resistance and less deformation under load. Carbon teflon has high level mechanical and abrasion properties. It also has a structure that maintains frictional properties. It is a great choice for dynamic and high pressure applications.
Usage Areas
Bearings, piston rings, seals, gaskets, seal rings and others
Mechanical Properties
| Specifications | Test ASTM | C25 | C35 |
|---|---|---|---|
| Tensile Strength (At Break) Kg/cm² | D638 | 110-210 | 110-160 |
| Elongation at break 23°C (%) | D638 | 70-110 | 55-90 |
| Compressive Strength (1% Deformation), 23°C (Kg/cm²) | D695 | 85-110 | 95-120 |
| Deformation Under Load (140 kg/cm, 24 hours, 23 °C)(%) | D621 | ||
| Total Deformation(%) | D621 | 2.9-4.8 | 2.3-4.3 |
| Permanent Deformation(%) | D621 | 0.4-2.1 | 0.3-1.8 |
| Total Deformation Under Load(%) | |||
| 10 kg/cm² load, 150 °C, 24 hours(%) | 1.8-2 | 1.3-1.5 | |
| 50 kg/cm² load, 150 °C, 24 hours(%) | 8-9 | 5-6 | |
| Impact Strength (Izod, notched)(Kj/m²) | D256 | 8.5-9 | |
| Hardness (Shore D) | D2240 | 65-68 | 66-70 |
Physical Properties
| Specifications | C25 | C35 |
|---|---|---|
| Specific Gravity 23°C (gr/cm³) | 2.05-2.15 | 2.0-2.1 |
| Coefficient of Friction, Static | 0.11 | 0.13 |
| Coefficient of Friction, Dynamic | 0.12 | 0.16 |
| PV Limits | ||
| 3 m/min (Kg.cm/cm².min) | 220-230 | 220-230 |
| 30 m/min (Kg.cm/cm².min) | 250-400 | 250-400 |
| 300 m/min (Kg.cm/cm².min) | 300-450 | 300-500 |
Thermal Properties
| Specifications | Test ASTM | C25 | C35 |
|---|---|---|---|
| Specific Heat (Kcal/kg.°C) | - | - | |
| Thermal Conductivity (x10^-4) 30°C (Cal/cm.sec.°C) | 15-17 | 19-21 | |
| Coefficient of Expansion (x10^-5) (°C^1) | D696 | ||
| 25°C-100 °C | D696 | 9.5-10 | 7.5-8 |
| 25°C-200 °C | D696 | 11-12 | 9-11 |
| 25°C-300 °C | D696 | 13-15 | 12-14 |
| Operating Temperature, Minimum (°C) | -260 | -260 | |
| Operating Temperature, Maximum (°C) | +270 | +270 |
Electrical Properties
| Specifications | Test ASTM | C25 | C35 |
|---|---|---|---|
| Dielectric Strength, 0.1 mm short time (Kv/mm) | D149 | - | - |
| Dielectric Constant, 50 Hz-10 Hz | D150 | - | - |
| Volumetric Resistance, 23°C (Ohm-cm) | D257 | > 10³ | > 10² |
| Surface Resistance, 23°C 50% Relative Humidity (Ohm) | D257 | > 10⁷ | > 10⁴ |
| Dielectric Loss Factor, 50 Hz, 23 °C (dry environment) | D150 | - | - |
