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Surface treatment hard anodizing

Hard coating or hard anodizing produces an especially hard and thick protective coating by the electrolytic oxidation of aluminium on aluminium surfaces. The process is similar to the anodizing process but the processing temperature is kept low. The coat is less porous and thus harder and more resistant to abrasion. The thicknesses achieved with the hard anodizing are between 50 and 150 µm. The surface features a uniform dark-grey colour depending on the pre-treatment.

Surface treatment hard anodizing