What are the two most common materials for conductors in aircraft applications?

Copper and aluminum are the two most common materials used for conductors in aircraft applications due to their favorable electrical and mechanical properties.

Copper is highly conductive, which means it efficiently carries electrical current. This property makes it ideal for applications where low resistance and high efficiency are crucial, such as in wiring for avionics and other electrical systems. Additionally, copper is known for its durability and ability to withstand the environmental challenges encountered in aviation, including temperature fluctuations and vibration.

Aluminum, while slightly less conductive than copper, has significant advantages in weight savings and corrosion resistance. In aerospace applications, weight is a critical factor, as reducing weight can lead to improved fuel efficiency and performance. Aluminum's lightweight nature allows for the construction of conductors that do not compromise the structural integrity of the aircraft while still effectively conducting electricity.

These materials are chosen based on a balance of conductivity, weight, cost, and resistance to corrosion, making them the preferred materials for aircraft conductors.