Hard anodizing

Hard anodizing is a process that enhances the surface of aluminum by creating a thick, durable oxide layer through electrochemical oxidation. When an aluminum object is immersed in an acid electrolyte and connected to an electrical source, it forms a tough, corrosion-resistant coating that is much thicker than standard anodizing. This hardened surface improves wear resistance and can handle tough environments, making it ideal for industrial tools, aerospace components, and machinery. The process alters only the surface, leaving the core properties of aluminum unchanged, and can be further dyed or sealed for additional protection or aesthetic appeal.