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Fluoroplastics –
PTFE CF25
PTFE CF25 is a PTFE with added graphite (25%). Because of the additive, the material has a lower coefficient of friction than pure PTFE, and its load‑resistance is better. The material is also electrically and thermally conductive. We deliver PTFE CF25 as plastic sheets, rods, foils and as hollow rods.
- Physical properties
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Value Unit Test method Specific gravity 2.07 g/cm3 DIN EN ISO 1183 Average molecular mass N/A Water absorption, 24/96 h (23 °C) N/A Weather-resistance moderate Combustibility HB UL 94 DIN EN ISO 527-2 Food safety no - Mechanical properties
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Value Unit Test method Modulus of elasticity N/A Tensile strength 16 MPa DIN EN ISO 527-2 Elongation at break N/A Tensile strength at break 90 % DIN EN ISO 527-2 Flexural modulus N/A Flexural strength N/A Compressive modulus N/A Compressive strength, 1%/2% N/A Impact strength (Charpy) N/A Notch impact strength (Charpy) N/A Notch impact strength (Izod) – kJ/m2 DIN EN ISO 180/2A Toughness (ball pressure) N/A Toughness (Shore D) 65 Sh D DIN EN ISO 868 Wear-resistance N/A Coefficient of friction (against steel) 0.11 μ - Thermal properties
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Value Unit Test method Glass-transition temperature N/A Melting point N/A Operating temperature (instantaneous) +240 °C Operating temperature (continuous) 240 °C Operating temperature (minimum) -100 °C Thermal expansion coefficient, 23–60 °C N/A Thermal expansion coefficient, 23–100 °C N/A Specific heat capacity N/A Thermal conductivity N/A - Electrical properties
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Value Unit Test method Surface resistivity N/A Resistivity N/A Dielectric strength N/A CTI value N/A - Optical properties
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Value Unit Test method Light transmittance N/A Refractive index N/A Optical errors N/A Abrasion-resistance, 100 rotations with 500 g N/A
Additional downloads
Delivery selection | plastic sheets, plastic rods, membranes, hollow bars |
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Specific gravity | 2.07 g/cm3 |
Service temperature | -100 … 240 °C |
Price category | €€€ (€26–50/kg) |
Special properties
- extremely low coefficient of friction
- fairly good ability to withstand loads
- extremely high resistance to chemicals
- good wear-resistance
- good thermal conductivity
Applications
bearings subjected to high speeds and relatively hard surfaces
Standard colours
dark grey
Premade pieces
Commonly known brands
G453