Aluminum Standards and Data 2024 (Metric SI) is The Aluminum Association's comprehensive reference for wrought and cast aluminum products, prepared by its Technical Committee on Product Standards. It brings together, in SI units, the Association's chemical composition limits for wrought and cast alloys, mechanical property limits and typical properties, dimensional tolerances for mill products, and physical and thermal properties. The manual also explains the alloy and temper designation systems, describes metallurgical characteristics and fabrication practice, and provides data on nominal densities and weights. Designers, materials engineers, fabricators and inspectors use it to select alloys and tempers, to write and check specifications, and to confirm that purchased material meets the requirements of the relevant product standard.