This conversion coating that reacts with the surface creating a black color that provides improved cosmetics compared to the look of the original steel.

black oxide


Black oxide is a metal finishing process that involves the application of a black-colored conversion coating to the surface of steel parts. The process involves immersing the steel part in a solution of black oxide chemicals, which react with the surface of the steel to create a black-colored finish. This black finish provides an improved cosmetic appearance compared to the original steel.

In addition to the black oxide treatment, a post treatment of oil can be applied to the black oxide finish, which further increases the corrosion protection and creates a deeper, more uniform color. The oil also helps to minimize abrasion during the break-in of mating parts, making it an ideal solution for a range of industrial and military applications, including machinery, firearms, and automotive parts where high performance and durability are essential. Plus, unlike other metal finishes, black oxide does not flake or peel and is resistant to impact, wear, and tear, and exposure to moisture and other corrosive elements.

At Sub Source, we are dedicated to providing our customers with the highest-quality metal prep and finishing services, as well as expert powder and metal coating services. Our team of experts will help you achieve the results you need, on-time and on budget. So give us a call at (815) 968-7800 to discuss your next project. We will be happy to answer any questions you may have and provide you with a fast quote.

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Whether you are looking for more information or are ready to move forward on your project, contact the NADCAP accredited professionals at Sub Source today.

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Let our dedicated team of experts coordinate all of your critical and secondary process needs. With our NADCAP accreditation and ISO certification, you can trust us to complete your project with the highest quality standards.