ASTM B479 is the standard specification for annealed aluminum and aluminum-alloy foil for flexible barrier, food contact, and other applications. It provides a focused technical basis for evaluating foil intended to serve as a protective, conformable material where barrier performance and material consistency matter. For buyers, specifiers, and quality teams, this ASTM standard helps define a common reference for product selection, procurement, and compliance review across applicable foil uses.

What is ASTM B479?

ASTM B479 is a product specification that addresses annealed aluminum and aluminum-alloy foil in forms suited to flexible barrier and food contact applications, along with other related uses. As an ASTM standard, it is used to organize the technical requirements that help describe the material in a consistent way. In practice, the document supports clearer communication between suppliers and purchasers by setting a recognized basis for material expectations, inspection, and conformity to the specified foil product type.

Where is ASTM B479 used?

ASTM B479 is commonly used where annealed aluminum foil is selected for flexible barrier packaging or other applications that depend on thin, conformable metal foil. It is relevant in purchasing, incoming inspection, and product qualification workflows for foil materials intended to meet controlled performance expectations. The standard is also useful when aluminum or aluminum-alloy foil is being specified for food contact applications, where material identification and consistency are important parts of the procurement process.

Why is ASTM B479 important?

ASTM B479 matters because it gives a shared specification for a specialized foil product that may be used in barrier and food-contact environments. By referencing a recognized technical standard, organizations can improve consistency in ordering, testing, and quality control while reducing ambiguity between supplier and customer. Using ASTM B479 can also support more reliable product evaluation and help ensure the selected foil aligns with the intended application and purchasing requirements.

• Annealed aluminum and aluminum-alloy foil
• Flexible barrier applications
• Food contact uses
• Material specification and procurement
• Quality control and conformity review