Anodic Alumina Surface Hardness Can Reach How Much

The hardness of aluminum oxide film is related to many factors, such as aluminum matrix material composition, aluminum oxidation process conditions and so on. The hardness of the film obtained by different processes is also different from that of the substrate, and the hardness of the hard oxidation process is more obvious. But generally speaking, the hardness of aluminum anodized film is much higher than that of aluminum matrix, the hardness of the matrix is about HV100, the hardness of the ordinary anodized film is about HV300, and the hard anodized film can reach about HV500.

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