ETFE - Tefzel®

EthyleneTetraFluoroEthylene, ETFE, is a co-polymer of Ethylene and TetraFluoroEthylene. Tefzel® is a trade name.

Why ETFE Tefzel®?

EthyleneTetraFluoroEthylene, ETFE, is a co-polymer of Ethylene and TetraFluoroEthylene. Tefzel® is a trade name.

ETFE is not fully fluorinated like some other fluoropolymers, but this coating is known for its exceptional toughness and durability. It is sprayed as a powder and can be built up to around 500 microns for a highly resilient finish.

Whilst ETFE exhibits comparable properties to fully fluorinated materials – like chemical and heat resistance – it does not perform quite as well in these fields as the likes of PTFE. However, it does possess a higher tensile strength as a result of its Fluorine, Hydrogen and Carbon composition and thicker finish.

This means that this fluoropolymer can operate under greater tension than others before breaking. ETFE has excellent insulation properties, outstanding vapour impermeability and high mechanical strength.

ETFE is used where chemical duty is to be found.

Performance Properties

  • Chemical and corrosion resistance
  • Diffusion resistant
  • Fatigue resistance
  • Inflammable
  • Mechanical strength
  • Thermal insulator
  • Vapour impermeability

Common Components for Coating

  • Jigs and tooling
  • Process plant
  • Rolls
  • Vessels

Performance Information

  • Chemical Resistance – Excellent 
  • Colour – Mid-green
  • Corrosion ResistanceDIN 50021 unlimited
  • Electric Resistance – Non-conductive insulator > 80kv/mm 
  • Fatigue Resistance – Particularly Good: bending radius of 4 mm without cracking 
  • Flammability – Inflammable
  • Friction0.4 
  • Hardness – Combination of good elasticity and toughness 
  • Heat Conductivity – Good insulator
  • Loadability – Moderate cold-flow tendency 
  • Resistance to Diffusion – Non-permeable
  • Solvent Resistance – Insoluble
  • Surface RoughnessRa <2.5µm
  • Temperature Resistance – -40°C to +150°C
  • Water Absorption< 0.1%
  • Wear Resistance – Excellent even with abrasive media

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