The lifespan of aluminum sheets can vary depending on the environment and usage, but generally, they can last for several decades with proper care and maintenance. Aluminum's resistance to corrosion and weathering makes it a durable choice. Compared to other materials, aluminum is more durable than wood and many plastics, but it may not last as long as some high-quality stainless steels or certain types of stone. It's also lighter than steel, making it a popular choice for construction and manufacturing applications where weight is a concern.