ASTM B580-79 defines the standard specification for anodic oxide coatings on aluminum, establishing requirements for porous coatings based on seven types ranging from heavy-duty Hard Coat (Type A) to decorative finishes (Types E-G). These specifications dictate thickness, surface preparation, sealing requirements, and corrosion resistance standards. For the official, updated specification, visit ASTM International
The standard provides seven distinct types of coatings based on thickness and service intent: Type Description Min. Thickness Typical Application A Engineering Hard Coat High wear, marine, machinery parts B Architectural Class I Exterior facades (unmaintained) C Architectural Class II Exterior windows (maintained) D Automotive Exterior Exterior trim, grills E Interior-Moderate Abrasion Appliances, nameplates, reflectors F Interior-Limited Abrasion Interior trim, housewares G Chromic Acid Aircraft assemblies, lap joints 🛠️ Manufacturing Requirements astm b580-79 pdf
: Most anodized parts must be sealed in water or aqueous chemical solutions to improve stain and corrosion resistance, except where otherwise specified (such as Type A hard coats). Measurement ASTM B580-79 defines the standard specification for anodic
Aluminum and its alloys are widely used in various industries due to their high strength-to-weight ratio, corrosion resistance, and conductivity. However, to further enhance their properties, surface treatments like anodizing are applied. Anodizing is an electrochemical process that converts the aluminum surface into a decorative, durable, and corrosion-resistant finish. ASTM B580-79 is a standard that specifically addresses the anodizing of aluminum and aluminum alloys. In this blog post, we'll dive into the details of ASTM B580-79 and its significance. Thickness Typical Application A Engineering Hard Coat High