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Black Anodizing

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

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

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!

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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.

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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.

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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.

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

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.