High-Purity Aluminum Alloy Ingot

High-purity aluminum alloy ingots are standardized, semi-finished metal products produced through direct chill casting or continuous casting processes. They serve as the primary raw material input for downstream manufacturing sectors including automotive, aerospace, and construction. These ingots are designed for remelting in foundries to produce cast components, extrusion billets, or rolling stock. Their controlled chemical composition and metallurgical structure ensure consistent quality and performance in final products. The ingots are available in common alloy grades such as 6061, 6063, and 6082, with aluminum purity ranging from 99.7% to 99.9% by weight. Mechanical properties, such as ultimate tensile strength in T6 temper, range from 180 to 310 MPa. Density is 2.70 g/cm³, and melting point (solidus) ranges from 585°C to 660°C. Thermal conductivity at 25°C is between 150 and 230 W/m·K. Ingot weight can be customized from 5 to 25 kg, with dimension tolerance of ±5 mm. Hydrogen content is limited to ≤0.15 mL/100g Al to reduce porosity, and oxide inclusion is ≤0.02 mm²/kg for cleanliness. Casting temperature is optimized at 700–750°C, and grain size is controlled to ASTM 1–3 for fine structure. These parameters are referenced against Chinese standards such as GB/T 1196, GB/T 3190, GB/T 228.1, GB/T 1423, GB/T 1425, GB/T 10297, GB/T 8005.3, and GB/T 14979, as well as ASTM E112 for grain size. It is essential to verify model-specific values and standards with the legal manufacturer or supplier before procurement, as the listed ranges are directory references and not guarantees of compliance. The ingots are intended for industrial remelting and fabrication, and their suitability for specific applications must be confirmed through material testing and consultation with the supplier.

Molten aluminum alloy is poured into molds, solidifying under controlled cooling to form standardized blocks with specific dimensions and metallurgical properties. The casting process, whether direct chill or continuous, ensures a fine grain structure and low gas content. During remelting, the ingot is heated to its melting range, and the controlled composition allows for predictable alloy behavior. The ingot's dimensions and weight facilitate handling and charging into furnaces. The solidification rate and cooling conditions influence the final microstructure, which in turn affects mechanical properties like tensile strength. The ingot's purity and low inclusion content minimize defects in downstream castings. The casting temperature is maintained within a specified range to optimize grain refinement. The ingot's design ensures consistent feeding and melting in foundry operations.