Aluminum Anodizing Companies banner

Anodized Aluminum

A reliable source for Anodized Aluminum information and leading Anodized Aluminum 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

Cicero, IL  |  708-222-5300

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 Cicero, Illinois. 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

Saporito Finishing Co. $$$

Reading, PA  |  610-374-5107

Specializing in color anodizing and chemical brightening for over 60 years, US Anodize has wasted no time in perfecting our aluminum anodizing methods and manufacturing process. We offer aluminum anodizing, PERMODIZE®, chromate conversion, and laser engraving. We serve a variety of industries, including automotive, military, medical, and more. We are capable of completing custom orders in our 50,000 square foot facility through the use of both of our high-volume anodizing lines.

Request A Quote

US Anodize $$$

North Tonawanda, NY  |  716-694-5001

Val-Kro Industrial Plating Inc. is an ISO 9001-certified company specializing in Electroless Nickel Plating, Type II Anodizing, Type III Anodizing, Chromate Conversion, Abrasive Blasting, Passivation, and Superfinishing. We offer a diverse line of Electroless Nickel Coatings with rack, barrel, and wire plating capabilities and can accommodate both low and high-volume production requirements. Val-Kro also offers both Conventional and Hardcoat Anodizing using our proprietary anodizing line.

Request A Quote

Val-Kro, Inc. $$$

Hillside, IL  |  708-547-6680

If you are looking for a durable, aesthetically pleasing finish, look no further. We offer a large array of chemical finishing services. We offer Type II, bright dip anodizing, and hard coat anodizing, as well as an architectural anodizing process and powder coating. Since our inception over 50 years ago, Ace Anodizing has cultivated a reputation of providing quick turnaround times and superior services and products with reliable quality you can trust. Rush services available.

Request A Quote

Ace Anodizing $$$
placeholder image Saporito Finishing Co. US Anodize Val-Kro, Inc. Ace Anodizing

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.

Aluminum Anodizing Informational Video

 

Metal Processes

Featured Industries