Aluminum casting refers to an object or component that has been produced through the process of casting molten aluminum into a mold or die to create a specific shape. The finished product may be a single piece or a complex assembly of multiple pieces that have been cast separately and then joined together. The surface of the finished aluminum casting may be smooth or textured, and may require additional processing, such as machining or polishing, to achieve the desired final appearance and dimensions. Aluminum castings are used in a wide range of industries, including automotive, aerospace, construction, and consumer goods, due to their excellent strength-to-weight ratio and versatility in terms of shape and size.