The price of aluminium circles is primarily driven by the Alloy Grade (e.g., 1050, 1060, 1100, or 3003) and the Temper (such as O, H12, H14). 1000 series alloys are generally more cost-effective for cookware, while 3000 series (manganese-added) offer higher strength at a premium. Additionally, thickness (0.3mm - 6.0mm) and diameter (100mm - 1500mm) precision significantly impact the manufacturing cost. Buyers should ensure the surface quality is free of scratches, oil stains, and oxidation, as these defects can lead to high scrap rates during the deep-drawing or spinning processes.