Cast aluminum alloy‌ is an aluminum alloy primarily made from scrap aluminum, which is smelted with elements like copper and silicon, then shaped into blanks or components through casting processes. As a major pathway for recycling scrap aluminum, producing one ton of ‌recycled cast aluminum alloy‌ generates approximately ‌3.6% of the carbon emissions‌ compared to primary aluminum production (using thermal power), while saving ‌3.4 tons of standard coal‌ and ‌22 tons of water‌ per ton.