What is Anodized Aluminum?

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What is Anodized Aluminum?

Anodizing is an electrochemical technique for making a decorative, long-lasting, corrosion-resistant, anodic oxide finish on the surface of the metal.

The process of anodizing involves immersing the aluminum in an acid electrolyte solution and passing an electric current through the medium.

It’s not painted on, like paint or plating, but it is completely embedded in the aluminum base. As a result, it won’t chip or peel off.

Aluminum revolutionized the world of metals during the 1920s, offering advantages such as light weight, strength, fabrication versatility, and durability.

Anodized finishes have helped to make aluminum one of the most popular and widely used materials in the manufacture of hundreds of consumer, commercial, and industrial goods.

The first and most crucial step in the history of aluminum was the invention of anodizing, which creates an extremely hard, long-lasting aluminum oxide finish on the aluminum surface.

Anodized Aluminum transformed computer hardware construction by protecting spacecraft from the harshness of space. It also improved satellite protection against the elements and shaped modern computing.


Is it possible for anodized aluminum to deteriorate?

This environmental corrosion can be reduced, but not entirely stopped by anodizing a metal surface. Anodizing creates a thin aluminum oxide layer that wears away with time. The surface should last 10-20 years depending on the thickness and quality of the anodization.


How can you tell if aluminum has been anodized?

Testing the conductivity of the surface with a digital multimeter is a typical method to check whether an aluminum part has been anodized. If the part isn’t anodized, it will most likely be conductive and have very low resistance.


Is anodized aluminum poisonous?

It is nontoxic. The anodized coating will not be damaged by excessive heat. Anodized surfaces are resistant to the point of melting aluminum (1,221°F) in high temperatures. Hard-anodizing makes cookware surfaces extremely smooth, making them almost nonporous (without pores).


How do you clean anodized aluminum?

Fill a cup with one or two drops of mild dishwashing detergent. Scrub the aluminum with an abrasive sponge soaked in soapy water. Because many harsh cleaning chemicals will react with the aluminum, an abrasive touch and a mild cleaning solution are required.

If you ever need help finding the right aluminum alloy & temper for your special projects,  give us a call we can help.

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