High-strength aluminum alloy billet is a semi-finished industrial material produced through direct chill casting and homogenization processes. It serves as the foundational stock for manufacturing precision components in aerospace, automotive, and machinery sectors. The material offers excellent machinability, weldability, and corrosion resistance while maintaining high strength-to-weight ratios. Billets are typically supplied in standardized dimensions for subsequent extrusion, forging, or CNC machining operations. This directory entry provides reference data for procurement and verification. The listed parameters, such as ultimate tensile strength (310–550 MPa), yield strength (240–500 MPa), elongation at break (8–15%), hardness (95–150 HB), thermal conductivity (130–190 W/m·K), and density (2.70–2.82 g/cm³), are typical ranges based on common alloy grades like 6061 and 7075, with tempers T6 and T651. Dimensional specifications include diameter (50–500 mm), length (1000–6000 mm), diameter tolerance (±0.5 mm, H9 grade), straightness (≤1.5 mm/m), and surface roughness (≤3.2 μm Ra). These values are indicative and must be confirmed with the supplier for the specific alloy, temper, and size required. The billet is supplied in round cross-sections, with weight per piece ranging from 10 to 500 kg depending on dimensions. Standards referenced include ASTM B211, ASTM E10, ASTM E1225, GB/T 3191, GB/T 1031, GB/T 3190, and GB/T 16475. These standards serve as procurement references; they do not imply certification or compliance of any specific product. Always verify model-specific values and standards with the legal manufacturer or supplier before use.
As-cast aluminum alloy ingots are homogenized to eliminate segregation and improve uniformity. The homogenized ingots are then scalped to remove surface defects and cut to precise dimensions, creating billets with consistent metallurgical properties throughout the cross-section. This process ensures that the billet has a uniform grain structure and mechanical properties, which is critical for subsequent forming operations. The billet's dimensions and tolerances are controlled to meet specified standards, allowing for predictable material removal during machining and consistent performance in the final component.
