decorative, durable, corrosion-resistant

What is Anodizing?

… the Finish of Choice

Anodizing is an electrochemical process that converts the metal surface into a decorative, durable, corrosion-resistant, anodic oxide finish. Aluminum is ideally suited to anodizing, although other nonferrous metals, such as magnesium and titanium, also can be anodized.

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Aluminum is the Ideal Metal to be used in anodizing

Anodizing is an electrochemical process that converts the metal surface into a decorative, durable, corrosion-resistant, anodic oxide finish. Aluminum is ideally suited to anodizing, although other nonferrous metals, such as magnesium and titanium, also can be anodized. The anodic oxide structure originates from the aluminum substrate and is composed entirely of aluminum oxide. This aluminum oxide is not applied to the surface like paint or plating, but is fully integrated with the underlying aluminum substrate, so it cannot chip or peel. It has a highly ordered, porous structure that allows for secondary processes such as coloring and sealing. Anodizing is accomplished by immersing the aluminum into an acid electrolyte bath and passing an electric current through the medium. A cathode is mounted to the inside of the anodizing tank; the aluminum acts as an anode, so that oxygen ions are released from the electrolyte to combine with the aluminum atoms at the surface of the part being anodized. Anodizing is, therefore, a matter of highly controlled oxidation the enhancement of a naturally occurring phenomenon.

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Industries Using anodizing

Open Up Endless Application Possibilities

Anodizing is an environmentally safe electrochemical process that converts the aluminum metal surface into a porous aluminum oxide, ultimately creating an end product whose finish is more durable and weather-resistant. This beneficial result combined with the array of aesthetically pleasing color finishes opens up endless application possibilities for companies who anodize products and components in commercial, industrial, and consumer applications, even jewelry and artwork.

Military Specification MIL-A-8625

Anodic Coatings for Aluminum & Aluminum Alloys

Solar Panel

Anodized finishes make aluminum one of the MOST respected Materials today

  • Protects satellites from the harsh environment of space.
  • Used in one of the world’s tallest buildings – the Willis Tower in Chicago, Illinois.
  • Provides attractive, minimum-maintenance, highly durable exteriors, roofs, curtain walls, ceilings, floors, escalators, lobbies and staircases in skyscrapers and commercial buildings throughout the world.
  • Revolutionized the construction of computer hardware, exhibit displays for trade shows, scientific instruments, and a constantly expanding array of home appliances, consumer products, and building materials.
  • Considered environmentally safe, producing few, if any, harmful effects on land, air, or water.

More About Anodizing

Ask the Safety Team

Have A Question About Safety In Your Plant?

A History of Anodizing

Richard Mann – A History of Anodizing

Why be an AAC Member

Our members are experts in their field. Events and workshops provide opportunities to interact with those with specialized expertise, including suppliers ready to share their wealth of industry knowledge with you. Whether you are an anodizer or supplier, becoming an AAC member strengthens your professional network and opens doors to new, advantageous resources.
2024 AAC Buyers' Guide

2024 AAC Buyers’ Guide

The AAC Buyers’ Guide features a complete list of all AAC member companies, from anodizers to suppliers. Every anodizing member identified their range of capabilities to add to your search. Many supplier members have highlighted their products through their listing and advertisements. The Buyers’ Guide is your compass to find the right vendor for your needs as a valuable resource. We are confident you will find this breadth of capabilities our members represent to be impressive and exhaustive to assist your anodizing needs.

The digital edition of the AAC Buyers’ Guide is now available, offering simple navigation and convenient links throughout for ease of use.

Calendar of Events
Free Online Continuing Education
ANO-Talk: All Things Anodizing
Many Benefits of Membership
AAC Technical Bulletins