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Type II Anodizing

Type II Anodized Aluminum Parts

Gleco Plating offers Type II Anodizing for aluminum parts and products requiring a more abrasive and corrosion-resistant finish. Available in Mil-A-8625, and AMS2471 specs, this finishing process stops aluminum from corroding or turning white when exposed to the elements.

Anodizing derives its name in that the part being finished is hung on a conductive rack and submerged in an electrolytic solution, forming an anode (positive electrode) in an electrical circuit. 

We can provide several anodizing options, including bright and clear dipping. Bright clipping is used to provide a highly reflective and glossy finish. Clear dipping is used to highlight the natural finish of the part.

Another finishing option involves dying the oxide layer of the anodized part for a decorative finish that prevents conductivity and corrosion.

The Anodizing Process

Like electroplating, anodizing involves placing an item in a bath to build up layers. In this case, the part is placed in a sulfuric bath to build the aluminum oxide into the material and on the surface. 

As part of this process, the dielectric properties of the aluminum oxide are transferred to the anodized part, making it an ideal electrical insulator (up to 800 volts per 0.001” thickness).

Anodizing can be employed on many different Aluminum Alloys.

Benefits of Type II Anodizing

Anodizing is preferred as a finishing option for aluminum because it is:

  • Corrosion-resistant
  • Durable
  • Dyeable 
  • Non-conductive
  • Gall-preventative
  • RoHS-approved

Typical Anodizing Applications

Commercially anodized aluminum is used for aerospace, medical, electronics, and defense applications, including:

  • Hydraulic valves 
  • Pistons
  • Weapons
  • Rims
  • Enclosures
  • Appliances
  • Mechanical hardware
  • Optical components
  • Robotics
  • Lighting fixtures

If you’re searching for a finish to keep your aluminum parts or products from corroding or wearing when exposed to the elements, contact Gleco Plating to discuss our Type II Anodizing services.