Understanding ASTM B580-79: The Standard Specification for Anodized Oxide Coatings on Aluminum
Which of the three would you like?
It is important to note that this specification cover nonporous, barrier-layer anodic coatings typically used in electrical capacitors. Key Classifications: Types of Anodic Coatings astm b580-79 pdf
: Also known as "Hardcoat" or Type III anodizing in military specs. It produces a dense, thick, and highly wear-resistant layer often used for gears, pistons, and hydraulic cylinders. Type B (Architectural Class I) It produces a dense, thick, and highly wear-resistant
: Anodizing builds up the surface of the aluminum. For tight-tolerance components (especially Type A), ensure the machining drawings specify whether dimensions apply before or after anodizing. : High resistance to weathering and corrosion
: High resistance to weathering and corrosion. Type C
The primary utility of the ASTM B580 standard is its clear classification system. It divides anodic coatings into six distinct types based on their minimum thickness and intended application environment.