Type II & Type III
Sulfuric Anodizing
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Type II VS Type III

We offer both Type II and Type III processes to meet your anodizing needs. What sets these two processes apart?

Type II

• Class I clear offered
• Class II all color offered
• 0.0002"-0.001" tolerance
• Anodize solution between 68°-75°

VS

Type III

• aka Hard Coat Anodizing
• Class I natural offered
• Class II black offered
• 0.001"0.002" tolerance
• Anodize Solution below 48°

Type II
Class 1 & Class 2

Tyoe II Class 1

Class 1

Type II class 1 is a non-dyed anodizing process. This process usually has a thinner coating with a tolerance ranging from 0.0002"-0.0005".

Type II Class 2

Class 2

Type II class 2 is a dyed anodizing process in which you can obtain a large variety of colors. This process has a thicker coating than Type II class 1, with a tolerance ranging from 0.0005"-0.001".

Type III
Class 1 & Class 2

Type III Class 1

Class 1

Type III class 1 is a non-dyed anodizing process. This process has a coating tolerance ranging from 0.001"-0.002".

Type III Class 2

Class 2

Type III class 2 is a dyed anodizing process in which black is used. This process has a coating tolerance ranging from 0.001"-0.002".

Projects

We've helped companies just like yours with their Sulfuric Anodizing needs.

Color Anodize

Type II Class 2

Dyed Standard Anodizing

Type II Class 2

Type III Class 2

Description

Type III Class 2

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View other projects we've worked on

The Anodizing Process

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

  • degreasing

    Step 1

    Degreasing

    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 wash

    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

    Rinse

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

  • deoxidizer

    Step 5

    Deoxidizer

    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 left over deoxidzer from the base metal to prepare it for the anodizing process. This is the final step in the cleaning process.

  • Anodize

    Step 7

    Anodize

    A controlled natural oxidation process using a sulfuric acid bath.

  • warm rinse 2

    Step 8

    Rinse

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

  • color dye

    Step 9

    Color

    Dye is added to a liquid bath where the anodized metal is then submerged to allow the dye to be absorbed. If clear, Skip to step 11.

  • cold rinse 3

    Step 10

    Color Rinse

    Freshly dyed metal is rinsed to remove unabsorbed dye.

  • clear or color seal

    Step 11

    Clear Seal & Color Seal

    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 step of the anodizing process.

  • Anodizing
    is
    complete

Contact Us

Our team is here to answer all of your anodizing questions!