What primary material characteristic does the core of clad aluminum alloys have?

The primary characteristic of the core of clad aluminum alloys is that it is bonded to pure aluminum surface layers. Cladding involves the process of bonding a layer of pure aluminum to the core material, which often consists of various aluminum alloys that provide strength and structural integrity. This combination enhances properties such as corrosion resistance and weldability, while also maintaining the advantageous mechanical properties of the underlying alloy.

This bonded structure is essential because it allows the clad aluminum to retain the desirable characteristics of pure aluminum, like its ability to resist oxidation and improve durability, while also benefiting from the strength of the alloy it encases. Understanding this core bonding feature is crucial in applications where a balance between weight, strength, and corrosion resistance is necessary, such as in aerospace structures.