Aluminum Anodizing Companies banner

Anodized Aluminum

A reliable source for Aluminum Anodizing information and leading Aluminum Anodizing Companies.

Aluminum alloys are especially weak in terms of corrosion resistance because the introduction of certain alloying elements, such as copper, iron and silicone, to natural aluminum weakens the overall resistance of the metal to eroding external forces. This weakening can also happen if the aluminum already contains any impurities. Of the various series of aluminum alloys, the two-thousand, four-thousand and six-thousand series are the most prone to corrosion. Read More…

Anodized Aluminum Anodized aluminum has undergone an electrolytic process in order to gain increased corrosion and wear-resistance, amongst many other benefits, due to the high susceptibility of untreated aluminum alloys to corrosion. Anodized aluminum products are important throughout industry and commerce.
Request for Quote

Leading Manufacturers

Dayton, OH  |  937-228-2191

Our standard aluminum anodizing is sure to please! We are able to provide this service to you from our state of the art facility in Dayton, Ohio. We have proven time and time again that we are able to provide many diverse products, and have become known as one of the most versatile companies in the industry. Our capabilities and expertise are what allow us to be able to complete any finishing application with ease. Contact our staff to learn more today!

Request A Quote

Hohman Plating & Manufacturing, Inc. $$$

Jackson, MI  |  517-782-8161

In the world's school, we are at the head of the class. At Elm Plating, we offer world-class services such as aluminum anodizing. Our hardcoat anodizing is of the highest quality and we have fast turnaround times. Constant improvement and quality are each employee's responsibility.

Request A Quote

Elm Plating Company $$$

Seattle, WA  |  206-634-2080

For more than 50 years, the Asko Group of companies has provided a complete range of high-quality services to plate, paint, repair or recondition metal parts for aerospace, electronics and industrial applications. Providing a full range of metal finishing for all shapes and sizes of fabricated and precision-machined parts for aerospace, electronics and industrial customers for more than 30 years. The Asko Group consists of five companies working together to meet your needs.

Request A Quote

The Asko Group $$$

Chatham, ON, Chavies, KY  |  877-556-9191

Dajcor Aluminum is the leading Canadian supplier of extruded, fabricated/machined and anodized components and assemblies to the automotive, renewable energy, transportation, building trades, military, recreation, and consumer-product industries.

Request A Quote

Dajcor Aluminum Ltd. $$$

Houston, TX  |  713-666-1375

Our company offers outstanding aluminum anodizing services. We will work with you to design the most cost efficient product for your exact applications. These beneficial items are integrated with the best finishing processes. We aim to exceed your expectations and you can count on us to be your one-stop-shop for all of your aluminum anodizing needs. If you have any questions please give one of our representatives a call today!

Request A Quote

Turn-Key Coatings, Inc. $$$
placeholder image Hohman Plating & Manufacturing, Inc. Elm Plating Company The Asko Group Dajcor Aluminum Ltd. Turn-Key Coatings, Inc.

Also spelled anodised, anodized aluminum is protected from corrosion through the thickening of the outer surface layer through the process of oxidization. Although this process actually weakens the structure of many other metals, such as iron that corrodes into rust, aluminum is actually strengthened by the formation of aluminum oxide.

Thus, anodized aluminum is utilized in a wide range of industries including: electronics, for protective casings of mp3 players, cameras and computer systems; construction, for door and window trim, siding and roofing; commercial, for items such as cookware, appliances and furniture frames; and industrial manufacturing, for equipment and parts such as actuators, electrolytic capacitors and scales.

As the most commonly anodized metal, anodized aluminum can be formed using a variety of anodizing processes. The three main processes used are: Type I anodizing, or chromic acid anodizing, Type II anodizing, or sulfuric acid anodizing, and Type III anodizing, or sulfuric acid hardcoat anodizing (also known as simply hard anodizing).

However, these are not the only anodizing processes used, just the most common. Other types include boric/sulfuric acid anodizing, thin film sulfuric acid anodizing, organic acid anodizing and phosphoric acid anodizing. For mass production of anodized aluminum, a method referred to as bath anodizing is commonly used. In bath anodizing, a tub is filled with the anodizing acid and the aluminum is immersed, with anodes, or electrochemical cells, attached to the surface layer.

Next, a power supply is turned on, introducing an electrical current that moves through the acidic solution and reacts to the anodes, thus producing oxygen. A cathode is also attached to the tub's side, producing hydrogen as oxygen is produced. The oxygen reacts to the surface layer of the aluminum and changes it into a thin film of aluminum oxide, the thickness of which depends upon the voltage of the electrical current.