Hard Anodize (TYPE III) or “Hardcoat” is a highly abrasion resistant/non-conductive coating that makes an aluminum surface harder than tool steel due to greater thickness & weight than conventional TYPE II sulfuric anodize. Hardcoat is specified for aluminum components subject to extreme wear, applications where superior abrasion resistance is needed, and/or for corrosive environments where a thicker, harder, more durable coating is necessary. Hardcoat can also be valuable where enhanced electrical insulation is required.
Hardcoat Features & Uses
- Improved wear resistance
- Improved surface for slide applications
- Can be ground or lapped
- Finish is harder than tool steel
- Can repair worn surfaces on aluminum
Since hardcoat can potentially be built up to several thousandths, this process can be useful for salvaging worn or mis-machined components
- Actuating Cams & Hydraulic Cylinders
- Sliding Parts & Hinge Mechanisms
- Valves, Pistons & Swivel Joints
- Insulation Plates & Blast Shields
- Gears, Wear surfaces – and more!
At Aotco, we plate to your specified coating requirements.
If coating is not specified on contract or applicable blue prints, the nominal Hardcoat thickness shall be .002”
**Hard Anodize Thickness = ~ 50% Penetration & ~ 50% Build-up**
Please visit our “Anodize Coating” page for information about Hard Anodize & thickness