Hard Coat Anodizing

Hard anodizing is a phrase used to describe an anodizing coating where the need for surface hardness and abrasion resistance is the main criteria. The build up for hard anodizing is much thicker than your standard anodizing. The typical build up of this coating is 0.001î and also 0.001î penetration into the material. The color of the aluminum oxide build up depends greatly on the alloy of the aluminum material. The color can range from a champagne/gold hue to a dark gray.

MIL-A-8625 Type III

• Class 1: Specifies that there will be no dye applied to the finished part.
• Class 2: Specifies that there will be a dye applied to the finished part.

Base Materials that Anodize Type III can be applied include 1100, 3000, 5000, 6000, and 7000 series aluminum alloys. Please note that we are unable to hard anodize 2000 series aluminum due to the high copper content.