What percentage of tensile strength does aluminum retain compared to copper of the same size?

Aluminum retains approximately 45% of the tensile strength of copper when comparing materials of the same size. This significant difference is due to the intrinsic properties of both metals. Copper is known for its higher tensile strength, which allows it to withstand greater forces before breaking. On the other hand, aluminum, while being lighter and more resistant to corrosion, does not possess the same level of strength as copper.

This percentage reflects the mechanical behavior of aluminum in tensile situations, which means that while aluminum has its advantages in other areas—such as weight and conductivity—it is less capable of handling tensile loads compared to the same size of copper. Understanding this relationship is critical for linemen in making informed choices about materials to use in various applications, ensuring both safety and effectiveness in their work.