Halar / ECTFE Coating
Halar® is recommended for high purity fluid systems in semiconductor, pharmaceutical and biotech industries
Halar®(ECTFE) Coating Technology
HALAR® is an engineering, melt-processable, thermoplastic, fluoropolymer used primarily for chemical and corrosion-resistant coating applications. It is also known as ECTFE coating. It has good electrical properties, excellent abrasion resistance and outstanding impact strength.
ECTFE stands for EthyleneChloroTriFluoroEthylene.
Halar Application Process
Halar® coating 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. The melting and application temperature of Halar® 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 Halar 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).
It is also hydrophobic and virtually unaffected by most harsh chemicals commonly encountered in industry today. Among those substances that Halar coating 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 Resistance – UL94 Class V-0 rating ANSI/UL 723 (ASTM E84) Class 1 rating
- Flammability – Inflammable
- Hardness – Shore hardness 75D (similar to Nylon)
- Heat Conductivity – Extremely non conducting
- Resistance to Diffusion – Non-permeable
- Surface Roughness – Ra <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
Steel
Stainless Steel
Steel Alloys
Carbon Steel
Magnesium
Brass
Titanium
Copper
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