Clear or Color Anodize

What is it?

Clear anodizing or color anodizing (also known as sulfuric acid anodizing) produces a nearly clear oxide coating which is usually less than 0.0010" thick. The coating is normally sealed to improve corrosion protection or color-fastness when dyed. Clear anodize (or color anodize) also provide good corrosion protection in mild environments and minimum wear protection.

What does it do?

Sulfuric acid anodizing can provide comparable corrosion resistance and better wear characteristics than chromic acid anodizing. This type of anodizing is used in many architectural applications including windows and door frames, siding, decorative panels, railings, light poles and automotive trim. The coating is frequently colored for decorative purposes using organic dyes or metallic salts. Because of its low cost, this coating is commonly specified on many engineered aluminum components requiring protection from minimum wear and corrosion.