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Passivation

Passivation AKA Passivate Passivate is a process that removes "free iron" contamination left behind on the surface of the stainless steel as a result of machining and fabricating processes. Stainless steel by its nature is self-passivating. The chromium within the alloy reacts ...

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Electropolish

Electropolish AKA Electro-Polish, EP, electropolishing Electropolishing is a process that removes material from the surface of the part. The removal of outer layer material from the metallic work piece creates a shiny, mirror finish resembling the polish of bright chrome car parts. ...

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Black Oxide

Black Oxide AKA gun bluing, black magic, black penetrate or black passivate For over 65 years Electro Polish has provided fully certified black oxide finishing for steel, stainless steel, copper, and other metals. Our two tank Dulite solution provides for deeper penetration ...

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Plugging & Masking

At Electro Polish Company we handle all different kinds of parts, jobs and customers. Some parts require areas to NOT be finished by our processes. Tapped holes, areas requiring electrical conductivity and sometimes just for looks a part might need ...

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Chem Film

Chem Film AKA aluminum chromate, chem-film, alodine, iridite, chromate conversion coating, trivalent or hexavalent. Chemfilm is a "chemical conversion coating formed by the reaction of chemical conversion materials and the bare surfaces (not alclad) of aluminum alloys." It is used primarily for ...

Electro Polish Anodizing

Aluminum Anodizing

Aluminum Anodizing AKA anodize, anodizing, anodic coating, aluminum oxide. Aluminum Anodizing is an electrolytic passivation process used to increase the thickness of the natural oxide layer on the surface of metal parts. Anodizing increases corrosion resistance and wear resistance, and provides better ...

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Hardcoat Anodizing

Hardcoat Anodizing AKA Hardcoat Anodize, Hard coat Anodizing, Hard Anodize and Hardcoat. Hardcoat anodizing produces a much thicker coating of aluminum oxide, penetrating holes and fissures in the surface to create a more uniform appearance than regular anodized aluminum. Aluminum sheets processed ...

There for You at the Finish


For over 65 years, Electro-Polish has been providing exceptional metal finishing services to customers across a wide variety of industries. We pride ourselves on offering a top quality aluminum anodizing service, electropolishing stainless steel service and stainless steel passivation - all within an impressive turnaround time of one to three days.

Anodizing and Electropolishing

Aluminum anodizing is an electrolytic passivation process that increases the thickness of the natural oxide layer on the surface of metal. It also increases the metal’s resistance to corrosion and wear, and offers better adhesion for paint primers and glues. Hard coat anodizing gives a much thicker coating of aluminum oxide that penetrates surface holes and fissures, giving a more uniform appearance than regular anodized aluminum.

Electropolishing is a process that removes the outer layer of material from the surface of the part. This creates a shiny, mirror finish similar to chrome.

Black Oxide Services

Electro Polish has offers fully certified black oxide finishing for steel, stainless steel, and copper, among others. Our two-tank Dulite solution gives a deeper penetration for a more resilient, richer black finish - without affecting your parts’ dimensions. It is integral to the part’s surface, so will not peel, chip, rub off or flake.

Powder Coating Services

Electro-Polish uses Chemfilm, which is a chemical conversion coating, used primarily on aluminum and aluminum alloys to increase resistance to corrosion and improve paint adhesion. It is often used as a pre-coating prior to industrial powder coating. Anodizing can be used as a primer as well. Primer processes added upon request.