What is an advantage of using Alclad aluminum in aircraft construction?

Using Alclad aluminum in aircraft construction is advantageous primarily because it provides good corrosion resistance. Alclad aluminum is a type of aluminum that has a thin layer of pure aluminum bonded to the surface of a more durable aluminum alloy core. This outer layer of pure aluminum serves as a protective barrier against environmental factors that can lead to corrosion, such as moisture and salt, which are particularly harmful in aviation.

The corrosion resistance is crucial in aircraft design, as it helps maintain the integrity and safety of the airframe over time, ensuring that the aircraft can withstand various atmospheric conditions. This quality makes Alclad aluminum a preferred choice for surfaces exposed to the elements.

In contrast, the other options do not highlight the significant benefits that Alclad brings to aircraft construction. The weight of the material, cost considerations, and handling requirements do not define the primary purpose and key advantage of Alclad aluminum, which centers around its protective qualities.