What is a disadvantage of using aluminum conductors compared to copper?

Using aluminum conductors presents the disadvantage of lower tensile strength compared to copper. Tensile strength refers to the maximum amount of tensile (pulling) stress that a material can withstand before failure. Aluminum has a lower tensile strength than copper, which means that aluminum conductors can be more susceptible to breaking under stress or strain. This characteristic can limit their effectiveness in applications where high strength and durability are required, such as in certain aviation environments or systems that experience significant mechanical loads.

In addition to tensile strength, aluminum conductors may face challenges related to electrical connections. Their lower strength can lead to issues with integrity at termination points, such as connectors, especially when exposed to vibration or thermal cycling. On the other hand, copper is known for its superior strength and ability to maintain good electrical contact in various conditions.