Black Oxide Coating

Black oxide coating is a chemical conversion process used to blacken the surface of a part without adding a thick coating. Unlike plating or coating methods that apply a thicker layer on top of the base material, black oxide employs a chemical solution to induce a reaction on the part’s surface. This process is primarily applied to ferrous metals (metals containing iron), though it can also be adapted for use on other metals like copper and stainless steel, which are specifically designed to resist surface reactions. The resulting finish is typically black or dark bluish-black and can range from glossy to matte, depending on the initial finish of the part and any post-conversion treatments applied.

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