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Certifications ISO 13485:2016 | AS9100D | ITAR | FDA Registered | CAGE Code 5TTR7 

PCTFE

PCTFE for CNC Machining

PCTFE (polychlorotrifluoroethylene) is a polymer with outstanding strength, stiffness, and dimensional stability that's commonly used for aerospace and laboratory applications.

Updated: 8/20/26

Outstanding dimensional stability, mechanical properties, and temperature range

PCTFE

PCTFE (polychlorotrifluoroethylene), often known by well-known brand names such as Kel-F® or Neoflon®, is a fluoropolymer material noted for its exceptional strength, rigidity, and dimensional stability.

PCTFE exhibits superior chemical resistance, radiation resistance, and flammability properties. It operates effectively within a temperature range of -400°F to 380°F. PCTFE is resistant to cold flow and possesses the lowest coefficient of thermal expansion among unfilled fluoropolymers. These features make it an ideal option when dimensional stability is crucial.

Performance Characteristics

  • Excellent chemical resistance
  • Useful temperature range
  • Radiation resistance
  • Dimensionally stable
  • Rigid and resistant to cold flow

Common Brands

  • Neoflon
  • Kel-F
  • Aclon

PCTFE Properties

  • Mechanical Properties
  • Thermal Properties
  • Electrical Properties
  • Optical Properties
  • Mechanical Properties

    Tensile Strength 5,000 psi
    Tensile Modulus of Elasticity -- psi
    Tensile Elongation 100 - 250%
    Flexural Strength 10,000 psi
    Flexural Modulus of Elasticity 200,000-243,000 psi
    Compressive Strength -- psi
    Hardness Shore D 90
    Izod Impact 2.5 - 3.5 ft-lbs/in

  • Thermal Properties

    Coefficient of Linear Thermal Expansion 3.9 in/in/°F x 10-5
    Heat Deflection Temperature (66 psi/264 psi) 259 / -- °F
    Max Continuous Service Temperature in Air 380 °F

  • Electrical Properties

    Dielectric Strength 500 V/mil

  • Optical Properties

    Light Transmittance -- %
    Haze -- %