The hardcoating process is similar to convention sulfuric acid anodizing in that it is formed by applying an anodic current to the parts in a solution of sulfuric acid. The sulfuric acid is however chilled to around 300F. The chilling of the solution generates a tighter pore resulting in a denser coating. The dense coating has superior abrasion resistance over conventional sulfuric acid anodizing.

Like regular sulfurc acid anodizing hardcoat can be dyed. The natural color off the coating is dependent on the alloy and thickness. The heavier the coating, the darker the deposit will become. Coatings of .002 inches or more on 6061 aluminum will be dark gray to black in color. The natural color of the coating will make all dyed colors appear dark.

Hardcoat will change the dimensions of the part approximately ½ the total thickness of the deposit. A buildup of between .001-.0015 per surface is typical. This will be achieved with a hardcoat thickness of .002 to .003 inches.