Because of that, anodized aluminum does rust but not in a typical way, and more importantly not in a harmful way. This electrical current oxidizes, or rusts, the surface and creates a protective film. Will Anodized Aluminum Rust?Īnodized aluminum is aluminum that has been submerged in a chemical acid bath, causing an electrical current to run through it. Plus it does not flake off like normal rust, so it can be used in many applications. The hard coating that results from the process replaces the original substance. It is often used in harsh environments or in applications that require exposure to the elements. Ultimately, it can result in aluminum that is harder than diamonds. So, what is anodized metal? It is the strengthening process aluminum goes through is called anodizing, which usually involves a bath of acetone that induces electrical currents. Oxidation is the process that causes rusting, so for most other metals this is a cause of deterioration. What is Anodized Metal? 7 Uses for This Hard Aluminum Metal What is Anodized Metal?Īluminum is one of the few metals that is made stronger through the oxidation process.
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