Article 5: Types of Powder Coating
Not all powder coatings are the same. Each type is engineered with specific properties to perform in different environments and applications. Choosing the right type of powder coating for your project is one of the most important decisions you’ll make — and it directly affects both performance and longevity.
Fluoropolymer Coatings
Fluoropolymer coatings include well-known product lines such as Dykor® and Xylan®. These coatings are known for exceptional corrosion and chemical resistance, nonstick surfaces, and low friction properties. They perform at temperatures up to 550°F, making them versatile across many demanding applications.
- Dykor® offers nonstick properties with a coating thickness up to 30 mil — a cost-effective option for applications requiring nonstick performance.
- Xylan® is available in multiple formulations with options for pigments, resin binders, and other additives for specific performance needs.
Common applications include food molds, car parts, threaded fasteners, sliding surfaces, architectural components, and vacuum and thermo-form molds.
Ceramic Metallic (Cermet) Coatings
Cermet coatings combine the properties of metals and ceramics to create a composite finish with exceptional high-temperature performance — up to 1,200°F. This makes them the top choice for applications exposed to extreme heat.
Cermet coatings are widely used in:
- Truck and motorcycle exhaust systems
- Aerospace components
- Power generation equipment
- Agricultural machinery
- Automotive parts
Depending on the formulation, cermet coatings can also offer surface flexibility or electrical conductivity.
Nylon 11
Nylon 11 is a polymer coating that provides a thick, durable finish ideal for parts that need wear resistance, dry lubrication, noise reduction, and machinability. It has a warm surface feel, which can be a benefit in consumer-facing applications.
Because nylon 11 is applied in thick layers, some parts may require coating all over and then selectively removing material from specific areas to maintain tight tolerances. It’s commonly used on metal parts that need to remain machinable after coating while still benefiting from protection and lubrication.
Architectural Coatings
Architectural powder coatings are specifically engineered to withstand outdoor weathering. They are used on building exteriors, structural components, and other elements exposed to the elements over many years.
Within this category are two primary types:
- TGIC Polyesters: Use triglycidyl isocyanurate (TGIC) as a crosslinker to assist with curing and enhance weather protection.
- TGIC-Free Polyesters: Offer equivalent weather resistance without TGIC, preferred in certain markets or where specific regulations apply.
Both options fall under the Super Durable Polyester category and are designed for long-term outdoor performance.
Dry and Solid Film Lubricants
Some powder coatings — including certain nylon 11 and cermet formulations — function as dry or solid film lubricants. These coatings allow surfaces to move smoothly against each other without the need for liquid lubricants that can wear off, collect debris, or require frequent reapplication.
This makes them ideal for moving mechanical parts where consistent, low-maintenance lubrication is required.
Functional Powder Finishes
Not all powder coatings are chosen for their appearance. Functional finishes prioritize performance properties over aesthetics. Examples include:
- Epoxy coatings for electrical insulation: Provide up to 1,000 volts of dielectric strength per mil, making them valuable for wire insulation and other electrical applications. Best suited for indoor use.
- Zinc-rich primers: Applied as a base coat to significantly enhance the corrosion resistance of whatever finish is applied on top.
Not Sure Which Coating Is Right for You?
Selecting the right powder coating type requires understanding your application, environment, and performance requirements. Advanced Coating Technology’s team has over 44 years of experience helping clients make the right choice. Contact us to discuss your project and request a quote.
