Black Oxide is a conversion coating created by a chemical reaction with the oxidizers and the metal to form an integral protective surface.  Application to ferrous alloys and metals begin as oxidizing salts react with iron magnetite, the "black oxide" of iron.  This reaction creates a fusion resulting in complete integration with the metal and alloy it protects, adding less than 5 to 10 millionths of an inch to the dimension of the surface. An Oil, wax or other coating is applied after treatment to give additional corrosion protection.   Black oxide is commonly used in the aerospace industry for transmission and hydraulic systems, where the finish will be constantly coated with oil, or for other moving parts that cannot tolerate the dimensional change of a more corrosion resistant finish.

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Advantages

• Dimensional Stability - Black Oxides success is due to its ability to give cosmetic
  appeal without affecting dimensional properties.

• Versatility - This process can be applied to many diverse metals including: carbon, alloy
  and stainless steels, copper, brass, bronze, die cast zinc, and cast iron.

• Durability - The finish will not chip, craze, peel or rub off.  The only way to remove the
  finish is by mechanical or chemical methods.

• Protection - Oxidized surfaces have an excellent ability to absorb oils,waxes and lacquers.
  This enhances the appearance while protecting the treated metal or alloy.

• Economical - You cannot achieve the same protection, appearance, and performance
  qualities with other finishing processes for the same low cost as Black Oxide.

Production Capacity

• High Volume Rack and Barrel
• Parts up to 7’ or 84” in length
• Parts up 2,000 lbs. in weight

Specifications

• MIL - STD - 13924D
• AMS - 2485G
• MIL - F - 495
• Can Meet Most Private Specs
• Available on Alloys, Stainless, Copper and Brass