There are many different materials that can be CNC machined from aluminum, including:

Wrought aluminum alloys: These are the most common type of aluminum alloys used for CNC machining. They are typically easy to machine and have good machinability. Some popular wrought aluminum alloys for CNC machining include 6061, 7075, and 2024.

Cast aluminum alloys: These are less common than wrought aluminum alloys, but they can be used for CNC machining in some applications. Cast aluminum alloys are typically stronger than wrought aluminum alloys, but they are also more difficult to machine. Some popular cast aluminum alloys for CNC machining include 356 and 4032.

Aluminum composites: These are materials that are made from a combination of aluminum and other materials, such as carbon fiber or fiberglass. Aluminum composites are very strong and lightweight, making them ideal for CNC machining applications where weight and strength are important.

Aluminum powder: This is a material that is made from finely ground aluminum. It can be used for CNC machining to create parts with very complex shapes.

Aluminum foam: This is a material that is made from aluminum that has been filled with gas bubbles. It is very lightweight and strong, making it ideal for CNC machining applications where weight and strength are important.

The specific material that is best for a particular CNC machining application will depend on the requirements of the application. For example, if the application requires a strong and lightweight part, then an aluminum composite may be the best choice. If the application requires a part with a complex shape, then aluminum powder may be the best choice. If you want more information abut CNC machining aluminum parts，please click here.