Electrolytic Two-Step Anodizing
Architectural Anodizing
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What is it?

2-Step electrolytic Anodize

Electrolytic Two-Step Anodizing

Electrolytic Two-Step Anodizing, also know as Architectural Anodizing, is the process in which the base metal has an AC current applied to it as it is immersed in a dye bath containing metal ions after the standard anodizing process occurs. The color will depend on the amount of time the metal is left in the solution.

Electrolytic Two-Step Anodizing is energy efficient and helps with light fastness, heat resistance, weather resistance, and chemical resilience. Standardly used in architectural, automotive, and other industry's where pieces may be subjected to constant weather or sunlight for an extended period of time.

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We've helped companies just like yours with their architectural anodizing needs.

Ultra-Black Anodize

Pontoon Fencing

Custom NIA ultra-black anodize.

2-step electrolitical architectural anodize

Swimming Pool Structure

2-step electrolitical architectural anodize

Type III Class 2 anodized parts

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View other projects we've worked on

The Two-Step Anodizing Process

We take pride win what we do. That's why we take care when anodizing your parts.

  • degreasing

    Step 1


    Base metals are washed with a commercial soap to clean away oils and other surface debris.

  • cold rinse

    Step 2

    Cold Rinse

    Base metal is submerged in a cold rinse tank where commercial soap and surface debris are washed away.

  • caustic

    Step 3

    Caustic Soda Wash

    Base metal is submerged in a sodium hydroxide based etch that takes away surface imperfections, scratches, minor scuffs, etc.

  • warm rinse

    Step 4


    Base metal goes through a cold and warm rinse to remove sodium hydroxide based etch chemicals.

  • deoxidizer

    Step 5


    Deoxidizer is used to remove any film left from the etching process, leaving the metal brighter.

  • cold rinse 2

    Step 6

    Cold Rinse

    A cold rinse is used to remove leftover deoxidizer from the base metal to prepare it for the anodizing process. This is the final step in the cleaning process.

  • anodize

    Step 7


    The base metal is submerged in a sulfuric acid bath to perform a controlled natural oxidation process.

  • warm rinse 2

    Step 8


    A three-step rinse process to clean and clear the sulfuric acid and remaining surface oxidation away.

  • 2-Step Dye Bath

    Step 9

    2-Step Dye Bath

    The anodized material is immersed in a dye bath containing metal ions and an AC current is applied.

  • rinse

    Step 10


    Freshly dyed metal is rinsed to remove unabsorbed dye.

  • seal

    Step 11


    A sealant is applied to the anodized material to help corrosion resistance and dye retention.

  • 2-Step rinse

    Step 12

    2-Step Rinse

    A normal rinse is then followed by a heated rinse in the final steps of the anodizing process.

  • Anodizing

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