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Standard Specification for Anodic Oxide Coatings on Aluminum

. It covers requirements for electrolytically formed porous oxide coatings used when appearance, abrasion resistance, and corrosion protection are critical. iTeh Standards Overview of ASTM B580-79 The specification classifies anodic coatings into seven types (A through G) based on their intended service conditions and thickness: iTeh Standards Type A (Hard Coat):

ASTM B580-79 refers to the Standard Classification of Anodic Coatings on Aluminum . The designation "79" indicates the year the standard was originally adopted or last revised in that specific cycle (1979). Although standards are periodically updated, the legacy of the B580-79 classification continues to be referenced in technical drawings and contracts, particularly for legacy parts and established industrial processes.

For engineers working on building facades, window frames, or structural components exposed to the elements, the "A" series of classifications is paramount. These require the thickest coatings to withstand UV radiation, salt spray, and industrial pollutants.