ANODIZING

Anodizing is the process of creating a controlled oxide coating on  
aluminum. A number of types of anodize processes have been 
developed for various end uses, the more popular types are:

• Chromic Acid Anodizing Improves corrosion protection 
• Paint base for aircraft and marine parts
• Mil-A-8625, Type I
  
  
• Sulfuric Acid Anodizing Cosmetic, most specified of the types
• Ability to be dyed to a wide range of colors
• Mil-A-8625, Type II 
  
  
• Sulfuric/Oxalic Acid Extremely hard, dense coating
• (Hardcoat) High wear resistance
•   Mil-A-8625, Type III
  
  
• Other types include Boric Acid, Oxalic Acid, Phosphoric Acid, and  
     anodizing solutions for architectural products.