AA ANSI H35.4-2017 (R2024)?

Designation System for Unalloyed Aluminum

standard by The Aluminum Association , 2017

This standard provides a system for designating unalloyed aluminum not made by a refining process and used primarily for remelting. Unalloyed wrought aluminum designations (10xx series with specified minimum aluminum and limits for natural impurities), are assigned and registered in accordance with ANSI H35.1.