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Black Anodizing

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To understand how a metal can be dyed black, the basic process of anodization should be understood. Anodizing involves using a corrosive chemical and electrical current to alter the chemical body of certain metals and make them stronger in the process. Read More…

Black Anodizing Black anodizing is a process through which the surface of an anodized metal is dyed black. Before the sealing stage of anodizing, the oxide surface of a metal can be dyed. This is done when the exterior appearance of the product is significant. There are countless dye colors to choose from, including black anodizing.
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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!

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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.

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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.

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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.

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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!

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

There are many types of anodizing acids, including sulfuric and chromic as the major anodizing contenders. However, some acids such as organic and boric are used in custom anodizing situations because they can offer more control in smaller settings. Metals commonly anodized are aluminum, titanium, magnesium and zinc. The new characteristics of an anodized metal are increased strength and corrosion resistance, a thicker and smoother protector then regular paint or metal plating. However, the process does make the metal more brittle, so extreme temperatures can cause damage. Depending on the style of anodizing and the type of metal, dying the product is possible.

Because the basic black dye is made from an inorganic substance, a chemical mixture called ferric ammonium oxalate, dyes used in black anodizing tend to be more lightfast. The same chemical is used to produce gold dye. To be lightfast means that the colors tend not to fade as quickly. This is true of any inorganic dye used during an anodizing process.

Black anodizing is produced in the same basic fashion that all colors for anodizing are produced, although there are a couple alternative processes too. Most anodizing processes, such as the sulfuric acid, make the surface of a metal more porous and therefore able to soak and retain the color of dyes. So directly after the major chemical shift in the metal's crystal structure, a dye can be applied.

Once a metal has been dyed, hot water or steam, often mixed with nickel acetate, is used to seal the surface and to convert the oxide into its hydrated form. This process decreases the potential of bleeding and can improve corrosion resistance. A black anodized product can also be made by way of metal dyes, which are electrolytically deposited in the pores.

Organic dyes are actually used during the chemical immersion of a product. The dying process is utilized in almost every industry and application non-colored anodized products are. A couple examples include the electronic field, which sells colored Mp3 players, flashlights and cameras, and the cooking industry, which often markets two-toned cookware.