Electropolishing is a finishing technique for stainless steel. It is an electrochemical process similar to, but the reverse of, electroplating. The Electropolishing process smoothes and streamlines the microscopic surface of the metal part.

Smoothness of the metal surface is one of the primary and most advantageous effects of electropolishing. During the process, a film of varying thickness covers the surfaces of the metal. The film is thickest over microdepressions and thinnest over microprojections. Electrical resistance is at a minimum whenever the film is thinnest, resulting in the greatest rate of metallic dissolution.

Electropolishing is the most effective treatment of stainless steel to produce a uniform layer of chromium-rich oxide resulting in a dramatically enhanced corrosion resistance. There is no MIL-SPEC for Electropolishing.

Electropolishing Benefits

- Levels metal's surface
- Can be applied to objects of complex shape
- Improves surface reflectivity and brightness
- Decarbonizes metals
- Removes heat tint and oxide scale