Which of the following statements about aluminum alloys in AM is correct?

Aluminum alloys are known for their excellent corrosion resistance and lightweight properties, which makes them suitable for various applications, including additive manufacturing (AM). Their low density allows for the production of parts that are strong yet significantly lighter than those made from other metals, such as steel. This characteristic is particularly advantageous in industries where weight reduction is critical, such as aerospace and automotive.

Furthermore, aluminum alloys can be engineered to enhance specific properties, contributing to their versatility in AM applications. By leveraging aluminum's lightweight nature and inherent resistance to corrosion, manufacturers can produce innovative designs that meet demanding performance requirements while maintaining structural integrity.

The other statements do not accurately reflect the properties or applications of aluminum alloys. While aluminum alloys can be more economical in some contexts, this is not universally true compared to steel alloys. Additionally, while aluminum may have limitations at extremely high temperatures, it is indeed suitable for various applications and can perform well under certain thermal conditions. Lastly, aluminum alloys are widely used in aerospace applications, demonstrating their reliability and effectiveness in critical components.