• Phone: (262) 782-2223
  • Fax: (262) 782-8775
  • 15955 West Overland Drive, New Berlin, WI 53151

UNICO Services

UNICO provides a uniform black oxide chemical conversion coating on ferrous and non-ferrous materials using DOD certified standards. MIL-C-13924D and AMS-2485 are the specification for a uniform coating for ferrous metals. Mostly decorative coatings, they also provide some corrosion protection.

Our black oxide services are designed to accommodate both high volume and small production runs with capability to rack and barrel process.

Rack Process

Parts are individually placed prior to plating for special care handling.

Barrel Process

Parts are tumbled together, generally for high volume runs.


Used on moving parts that cannot tolerate the dimensional change of a more corrosion-resistant finish. An alkaline oxidizing finish for wrought iron, cast and malleable irons, plain carbon and low allow steels.


An alkaline oxidizing finish for 300 Series corrosion resistant alloys. More commonly know as stainless steel.

“Great turn around service!”
– Jen B.