Comparison Guide
Types of Anodising at a Glance
Type II and Type III are both widely used under MIL-A-8625 classifications, but they serve different performance priorities. Type II is common for general corrosion and finish requirements, while Type III is specified for higher wear-duty needs.
Type II vs Type III — Quick Comparison
| Criteria | Type II Anodising | Type III Anodising |
|---|---|---|
| Purpose | General corrosion resistance and finish support | Heavy-duty wear and durability performance |
| Oxide Layer | Typically thinner than Type III | Typically thicker and harder |
| Use Cases | Architectural and general engineering parts | Industrial components facing abrasion and load |
| Selection Driver | Balanced finish and protection | Maximum wear-oriented performance |
How to Choose
If your part sees frequent contact wear or aggressive duty, Type III is often the stronger candidate. For many standard corrosion-protection requirements, Type II remains a practical and cost-conscious option.
Confirm selection with thickness targets, dimensional tolerance, and performance test expectations.