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Anodizing
An electrochemical process that converts the surface of aluminum into a dense, hard aluminum oxide layer. Anodizing significantly improves corrosion resistance and wear resistance and can be dyed to a wide range of colors. Type II and Type III are the most common specifications.
Anodizing is an electrochemical process uniquely suited to aluminum fabrications, transforming the naturally thin aluminum oxide surface into a dense, hard, and wear-resistant layer. The process involves immersing aluminum in an acid electrolyte bath where electrical current flows through the part, oxidizing the surface to thicknesses ranging from 0.0001 to 0.003 inches depending on specification.
Type II anodizing (medium thickness) is the most commonly specified grade for general industrial and architectural applications, while Type III (hard-coat) anodizing produces an even harder layer ideal for high-wear components. The resulting aluminum oxide layer can be dyed to virtually any color while maintaining full corrosion resistance, a capability unavailable with conventional paint finishes.
For aluminum parts requiring excellent corrosion resistance combined with aesthetic appeal, anodizing is an ideal choice over traditional wet paint or powder coating.
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