Rust Never Sleeps: The Anti-Corrosion Advantages of Powder Coating and E-Coating

Powder coating and e-coating both provide hard-wearing, long-lasting protection against rust and corrosion. Compared to conventional liquid paints, both industrial coating methods offer better durability and tend to create a more consistent coat, which prevents moisture and chemicals from ever reaching the metal surface.

That enhanced durability is especially important for automotive parts, architectural applications, as well as industrial coating solutions and commercial equipment – all of which are subject to extreme wear and chemical corrosion. Serving these high-performance industries and many others, Winona Powder Coating has evolved into one of America’s leading industrial coating providers.

Below, we take a closer look at the anti-corrosive benefits of our powder coating and e-coating services.


How Powder Coating and E-Coating Prevent Rust

Just as it sounds, powder coating involves spraying parts with special powders which electrostatically cling to the surface of the product. Similarly, e-coating involves submerging parts in a liquid bath then applying an electric current, which causes particles in the liquid to electrostatically stick to the part surface.

Both processes then utilize oven curing to maximize powder adhesion and performance. Because both methods rely on electrostatic particles, it’s easier to achieve a thick, even, high-performance coat compared to conventional liquid painting.

Furthermore, specialized powders can create a cured film on the surface of coated parts which offers enhanced resistance to moisture as well as many chemicals, solvents, and UV radiation. This higher level of protection is crucial for long-term rust prevention and keeping all forms of metal corrosion at bay.

Powder Coating vs. E-Coating in Terms of Rust Prevention


The Anti-Corrosion Advantages of Powder Coating Services:

  • Powder coating creates a thick, even, relatively durable finish across the entire surface of products. The molecular nature of the electrostatic coating combined with its thickness allow powder coated parts to withstand wear and tear while preventing the ingress of water and chemicals.
  • Specialized powders are formulated to provide even more corrosion resistance for high-performance products, offering higher levels of protection against common industrial chemicals and solvents.

The Benefits of E-Coating for Corrosion Protection:

  • Compared to powder coating, e-coating is better at achieving a thin layer for use as a primer, with liquid paint applied over top. This is commonly used in automotive manufacturing and other equipment industries that require the use of liquid paint for cost and aesthetics, while still receiving the enhanced corrosion resistance of e-coating.
  • For extremely complex parts with difficult-to-reach areas, the liquid immersion process of e-coating can more easily achieve a full coat. Total coating is imperative to ensure that the part remains rust-free – if even a small amount of corrosion reaches an uncoated corner, it will only tend to spread.

Corrosion Resistance: Powder Coating and E-Coating vs. Liquid Paint

Regardless of which coating method is better suited for your parts, both powder coating and e-coating can provide better long-term rust prevention than conventional liquid paints. Put simply, powder coated and e-coated parts have thicker, sturdier finishes engineered to stand the test of time.

Quality American Powder Coating and E-Coating Services

Founded in 1974, Winona Powder Coating has evolved into one of the Midwest’s leading powder coaters and e-coating service providers. With two locations based out of Etna Green and Elkhart, Indiana, our company has served commercial metal finishing customers across a diverse range of industries for more than 35 years.