Is the formation of black oxidised surface on steel, which has excellent "Antiscuffing" and "Non chip" properties. There are no dimentional changes in this process and so it is invaluable in situations where components are finished machining before treatment, hence its wide use in Armament, Machine Tool and Fastener Trades. Besides its excellent eye appeal Oxi-Black Chemical Blacking gives very good corrosion resistance.

Black Polymer Finish on stainless steel and zinc.