What are the differences between aluminum alloys and pure aluminum?

Aluminum alloys and pure aluminum differ in composition and properties. Pure aluminum is soft and has low strength, making it less suitable for structural applications. In contrast, aluminum alloys are made by combining aluminum with other elements like copper, magnesium, or silicon to enhance strength, durability, and resistance to corrosion. These alloys maintain the lightweight nature of aluminum while offering improved mechanical properties, making them ideal for various industries, including aerospace, automotive, and construction.