ANODIZING INFORMATION from Finishing Technology, Inc.
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4510 Muhlhauser Rd.
Hamilton OH 45011
fax 513-874-4846

Protect your product while making it easier to work with.

Finishing Technology’s Anodizing Capabilities
Type 2: Sulfuric Acid

Type 2 Anodizing: Sulfuric Acid

Also called architectural anodizing, Type 2 Anodizing is an electrochemical process that creates an aluminum oxide film by rapidly controlling the oxidation of an aluminum surface. The resulting aluminum oxide film is electrically non-conductive and porous to provide excellent corrosion protection, improved wear characteristics, and is a superior base coat for additional coating applications. The surface appearance is commonly clear or dyed for cosmetic applications. The major benefit of Type II Anodizing is the ability to add a myriad of decorative colors and dyes.

For aerospace applications, Finishing Technology offers Type II Anodizing and includes these capabilities:

  • Typical Formed Thickness is 0.00005 to 0.0002 in.
  • Rack Anodizing
  • Available Masking for Selective Surface Anodizing
  • Salt Spray Corrosion Test (minimum 336 hours of salt spray resistance)
  • Thickness Analysis

Properties of Type 2 Anodizing

  • Corrosion Resistance: Resistant to salt-water and atmospheric attacks.
  • Decorative Appearance: Luster can range from dull to high depending on the base metal. The brighter the base metal, the brighter the anodize.
  • Electrical Insulation: Aluminum oxide is a dielectric.
  • Color Flexibility: Wide spectrum of colors can be obtained.
  • Paint Adhesion: Offers a chemically active surface for most paint systems.
  • Adhesive Bonding: Improves bond strength and durability.
  • Emissivity: Films with a thickness >0.00032 in. increases the emissivity of the aluminum.

Next: Finishing Technology’s Anodizing Capabilities Type 3

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