Why is 2017 and 2024 aluminum commonly used in aircraft construction?

2017 and 2024 aluminum alloys are preferred in aircraft construction primarily due to their ability to provide high strength while maintaining a low weight. This characteristic is crucial in aerospace applications, where reducing weight can significantly enhance performance, fuel efficiency, and overall aircraft design. The high strength-to-weight ratio of these alloys makes them suitable for critical structural components that must withstand various loads and stresses during operation.

These aluminum alloys are specifically engineered to achieve a good balance of tensile strength, fatigue resistance, and toughness. The high strength allows for thinner sections to be used, which contributes to weight savings without compromising structural integrity. This feature is essential in aerospace design, where every ounce matters.

In contrast, while corrosion resistance and ease of welding are important properties in many applications, they are not the primary reasons for the selection of 2017 and 2024 aluminum in aviation. These alloys do offer reasonable corrosion resistance and can be welded with some techniques, but their standout attribute is the exceptional strength-to-weight performance, which is vital for aircraft safety and efficiency.