SAE International (Aerospace Material Specification) · 2020
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SAE Aerospace Material Specification for hard anodic coatings on aluminium and aluminium alloys (also known as Type III hard anodize). Specifies processing parameters, coating thickness ranges (typically 25-75 μm), hardness requirements, and dimensional tolerance allowances for aerospace applications. Frequently referenced jointly with MIL-A-8625F Type III but with tighter performance bands for aerospace use.