Finishes

Protocase offers a wide range of finishes for both functional and cosmetic purposes. These include powder coating, chemical conversion coating, anodizing*, Resicoat, tin plating*, nickel plating*, and bare metal finishes like grained, vibratory, and media blasting.

*Please note: These processes require additional lead time as they are completed off-site by our trusted third-party suppliers.

The best finish depends on your project's requirements, including corrosion resistance, aesthetics, conductivity, durability and environmental exposure. Contact us if you need help selecting the right finish for your specific requirements.

Masking protects specific areas from coatings or anodizing to preserve tolerances, grounding surfaces, or conductivity zones.

Passivation is the process of treating stainless steel with Citric Acid in order to remove free iron from the metal's surface.

When not painted, stainless steel will rust, due to its inherent properties. Passivation maximizes the corrosion resistance of stainless steel.

Widely recognized as the industry standard for painting metal, powder coating provides a high-quality, durable finish.

Protocase offers a variety of standard stocked colors and textures. Visit our powder coat page for more details.

Yes, we are happy to offer non-stock or fully custom colors for an additional fee and a longer lead time. Please contact us for more information.

Yes, we can provide free samples so you can see the actual colors and quality up close. This will help you make an informed decision. Request your samples here!

A bare metal finish is a great option if you don't want your parts painted but still want them to be aesthetically pleasing.

Protocase offers several bare metal finishes for custom parts, enclosures and panels, including no finish, grained finish, vibratory finish, media blasting, stock finish.

Chemical conversion coating is used on aluminum parts and enclosures to improve corrosion resistance while maintaining electrical conductivity.

Yes. In fact, we recommend it. Chemical conversion coating will not hide any existing scratches or blemishes on the surface of unfinished aluminum parts.

Yes, chemical conversion coating is also known as chem film, chromate coating, or yellow chromate coating.

Anodizing enhances aluminum's natural oxide surface, providing increased corrosion resistance and a decorative finish. It serves both functional and cosmetic purposes.

Anodized aluminum's surface is also much harder than untreated aluminum, and is therefore much more resistant to scratches and wear.

The key difference between Type II and Type III is that for Type III anodizing, the sulfuric acid solution's temperature is lowered and run at a higher voltage.

The end result is a denser, wear-resistant oxide layer that creates a harder and smoother finish than Type II anodizing. Type III anodizing is ideal for parts that rub together.

We offer two resicoat options: Resicoat® EL HGD47QF ECA-1283 Red 3332 and Resicoat® EL HNF35QF ECB-1363A Black 2701.

Yes, but please note that this requires additional lead time as these processes are completed off-site by trusted third-party suppliers.