PCTFE (polychlorotrifluoroethylene), commonly referred to as Kel-F® or Neoflon®, is a fluoropolymer with outstanding strength, stiffness, and dimensional stability. It has excellent chemical resistance, radiation resistance, and flammability characteristics. The material has a useful temperature range of -400°F to 380°F. PCTFE is resistant to cold flow and it has the lowest coefficient of thermal expansion of any unfilled fluoropolymer. These characteristics make it an excellent choice when dimensional stability is critical.
PCTFE is often used for aerospace applications when chemical resistance, a broad operating temperature range, and low flammability are required. It is also used for cryogenic valve applications and laboratory instruments. FDA compliant grades are available. Please ask your Curbell Plastics representative for more specific information.
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For a glossary of terms, see our Plastic Properties Descriptions.
TYPICAL PROPERTIES
| |
UNITS |
ASTM TEST |
|
| Tensile Strength |
psi |
D638 |
4,860 - 5,710 |
| Flexural Modulus of Elasticity |
psi |
D790 |
200,000 - 243,000 |
| Izod Impact (notched) |
ft-lbs/in of notch |
D256 |
2.5 - 3.5 |
| Heat Deflection Temperature (66psi / 264psi) |
°F |
D648 |
259 - |
Water Absorption
(Immersion 24 hours) |
% |
D570 |
0 |
PHYSICAL PROPERTIES
| |
UNITS |
ASTM TEST |
|
| Specific Gravity |
- |
D792 |
2.11 - 2.17 |
Water Absorption
(Immersion 24 hours) |
% |
D570 |
0 |
MECHANICAL PROPERTIES
| |
UNITS |
ASTM TEST |
|
| Tensile Strength |
psi |
D638 |
4,860 - 5,710 |
| Tensile Modulus of Elasticity |
psi |
D638 |
- |
| Tensile Elongation |
% |
D638 |
100 - 250 |
| Flexural Strength |
psi |
D790 |
9,570 - 10,300 |
| Flexural Modulus of Elasticity |
psi |
D790 |
200,000 - 243,000 |
| Compressive Strength |
psi |
D695 |
- |
| Hardness |
scale as noted |
D785, D2240 |
Shore D 90 |
| Izod Impact |
ft-lbs/in |
D256 |
2.5 - 3.5 |
THERMAL PROPERTIES
| |
UNITS |
ASTM TEST |
|
| Coefficient of Linear Thermal Expansion |
in/in/°F x 10-5 |
D696 |
3.9 |
| Heat Deflection Temperature (66psi / 264psi) |
°F |
D648 |
259 - |
| Max Continuous Service Temperature In Air |
°F |
- |
380 |
ELECTRICAL PROPERTIES
| |
UNITS |
ASTM TEST |
|
| Dielectric Strength |
V/mil |
D149 |
500 |
OPTICAL PROPERTIES
| |
UNITS |
ASTM TEST |
|
| Light Transmittance |
% |
D1003 |
- |
| Haze |
% |
D1003 |
- |
OTHER
| |
UNITS |
ASTM TEST |
|
| Coefficient of Friction |
- |
Dynamic |
- |
Values may vary according to brand name. Please ask your Curbell Plastics representative for more specific information about an individual brand.
Still Not Sure if You Need PCTFE? Research PCTFE or Ask a Plastics Expert.