Halar / ECTFE

Halar® is recommended for high purity fluid systems in semiconductor, pharmaceutical and biotech industries

Halar®(ECTFE) Coating Technology

ECTFE is an engineering, melt-processable, thermoplastic, fluoropolymer used primarily for chemical and corrosion-resistant coating applications. It is most commonly known under the trade name HALAR®. It has good electrical properties, excellent abrasion resistance and outstanding impact strength.

ECTFE stands for EthyleneChloroTriFluoroEthylene.

Halar Application Process

ECTFE is applied using an electrostatic powder gun in stages to build up the coating thickness prior to oven curing. All parts are cleaned and pre-treated before Halar® is applied using a sandblasting process. This procedure cleans and etches the surface making it ideal for Halar® to bond and seal. Halar® is applied in stages to build up the coat thickness. Halar® is melted and applied at 260°c.

With its excellent corrosion-resistant properties, ECTFE will provide protection from most ultrapure chemicals, strong inorganic bases, acids and organic solvents.

Common Components for Coating

Industries that use ECTFE include chemical, pharmaceutical and petrochemical. Halar® is also recommended for high-purity fluid systems in semiconductor, pharmaceutical and biotech industries, particularly where the process surface must be smooth, chemically inert and resistant to bio-fouling.

  • Agitators and impellors
  • Caustic collectors
  • Centrifuges
  • Ducting
  • Electroplating equipment
  • Filters
  • Hoods
  • Pipework
  • Pumps
  • Sieve plates
  • Storage tanks
  • Tanks
  • Valves
  • Vessels and reactors

Halar® Coating Performance Properties

Halar® shows excellent chemical resistance and exceptional barrier properties over a wide range of temperatures. Nowadays Halar® is unanimously accepted and acknowledged as top-performance coating for universal corrosion control (pH 1-14).

Halar® is hydrophobic and virtually unaffected by most harsh chemicals commonly encountered in industry today. Among those substances that Halar® is resistant to are strong mineral and oxidizing acids, alkalis, metal etchants, liquid oxygen and most organic solvents.

Furthermore, it exhibits outstanding exterior durability (stability to UV light and weather) and resistance to high energy radiation.

  • Abrasion and abuse resistance
  • Chemical and thermal resistance
  • Electrical insulation (static dissipation version available)
  • Exterior durability
  • Flame resistance
  • Hydrophobic
  • Permeation resistance
  • Purity
  • Resistant to bio-fouling
  • Smooth finish

Halar® Performance Information

  • Colour – Grey-green (static dissipative is black)
  • Corrosion Resistance – Exceeds DIN 50021
  • Disruptive Discharge Resistance – Non-conductive insulator. Dielectric constant 2.6.
  • Fatigue Resistance – Particularly good: bending radius of 4mm without cracking
  • Flame ResistanceUL94 Class V-0 rating ANSI/UL 723 (ASTM E84) Class 1 rating
  • Flammability – Inflammable
  • HardnessShore hardness 75D (similar to Nylon)
  • Heat Conductivity – Extremely non conducting
  • Resistance to Diffusion – Non-permeable
  • Surface RoughnessRa <2.5microns
  • Temperature Resistance – -70°C to +150°C 
  • Water Absorption – < 0.1%

The static dissipative version has a disruptive discharge resistance of 104 to 105 Ohms/square.

Can Marcote solve your chemical process problems? Yes, we can. Simply contact us and we will use our expertise and experience with ECTFE to help you.

Surfaces that Halar® coatings can be applied to

Metallic substrates

Stainless Steel
Steel Alloys
Carbon Steel

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