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Black Oxide

Black Oxide

Black oxide is an exceptionally thin process which is an iron based oxide film. It is formed by putting iron parts into a hot and strong alkaline aqueous salt solution with nitrates and other ingredients. However, it is also possible to oxidize non-ferrous metals under suitable conditions to form black oxides. It is recommended to apply an after-finish treatment for black oxided component, such like with an oil or wax to achieve excellent anti-corrosion protection.