Halar® ECTFE, PTFE, Xylan®, Epoxy, Ryton® (PPS), PVDF, and more: Advanced Industrial Coatings provides expert applications for hundreds of brand-name and custom corrosion resistant coatings.
The right corrosion resistant coating for a specific application depends on the type of corrosion that the part must resist. Some corrosion resistant coatings are better suited to withstand corrosion from external elements, while others are specially formulated to resist exposure to chemical corrosion. AIC also provides industry-leading expertise on the use of primers to provide superior corrosion resistance as well as an excellent adhesion base for top coats that provide additional surface properties.
Key Corrosion Resistant Coatings Applied at AIC and their Properties
Halar® ECTFE is a melt-processable polymer produced by Solvay Solexis. Halar offers standout barrier strength that can even top that of PTFE, making Halar ECTFE a top choice for corrosion and chemical protection. It resists aqueous caustics, chlorine, strong acids, as well as organic solvents and other corrosive chemicals (pH 1 – 14), up to 300°F. It offers good dielectric strength, is excellent for use in chemical and Ultra-Pure Water applications, and is recommended for any parts in contact with highly corrosive or ultra-pure chemicals including strong inorganic bases and strong mineral and oxidizing acids.
Tefzel® ETFE, by DuPont, is another heavy-duty corrosion resistant coating that offers properties similar to Halar ECTFE.
PTFE (Including Xylan® and DuPont’s PTFE-based Performance Coatings)
While PTFE coatings are mainly known for their nonstick properties, most PTFE coatings also offer top-level corrosion resistance as well. Companies such as Whitford Worldwide have developed special versions of PTFE coatings (Whitford’s Xylan® 1424 for example) that are specially designed to provide extra corrosion protection in specific types of corrosive environments. Some PTFE coatings risk permeation at higher operating temperatures, although this can often be remedied through the use of primers and pretreatment.
Epoxy is a corrosion resistant coating that is often used in applications that require resistance to weather and other external elements. This coating is a frequent favorite because it offers cost-effective corrosion protection while providing excellent impact and wear resistance. One of the unique properties of some epoxies is that they are able to offer corrosion protection at operating temperatures up to +500°F. Most epoxies can deliver about 2500 hours of salt spray resistance. Epoxies are often used as primer coats that add corrosion resistance and extra adhesion for a top coat that will deliver additional surface properties.
Ryton®, by Chevron Phillips Chemical, is the brand name for polyphenelyene sulfide (PPS), one of the few thin-film polymers that provides truly outstanding chemical corrosion resistance. It strongly resists acids and alkalies even under extreme conditions, and can resist some solvents.
Kynar® is a thick film barrier coating produced by Arkema that is extremely durable as well as corrosion resistant. It is recommended for its resistance to halogens, alkalis and strong acids, but generally we don’t recommend it for solvent resistance. It’s a frequent choice for chemical processing equipment, battery, semiconductor, wastewater, food and pharmaceutical industries.
AIC applies an enormous number of other corrosion resistant coatings from major and specialty coating manufacturers including Solvay Solexis, Axalta (DuPont), Whitford Worldwide, Chevron Philips Chemical, Arkema, and more.
Our most typical applications of corrosion resistant coatings include:
- Oil and gas applications
- Alternative-energy applications
- Wastewater treatment
- Semiconductor parts
- Chemical processing parts