Black oxide reduces light glare and reflection, and may be considered a decorative coating. Not only does black oxide enhance the appearance of parts, it also improves lubricity, corrosion protection, and abrasion resistance, all with dimensional stability.
As the coating becomes an integral part of the metal surface, there is no peeling, chipping or flaking. Parts with black oxidation do not produce noxious fumes during welding. Black oxide does not reduce hardness. Black Oxide is an anti-galling surface that provides a lubricating layer during initial contact while work-hardened surfaces form.