What is the difference between aluminum and aluminum alloy?

Aluminum is a lightweight, soft, and ductile metal found in the Earth's crust. It is highly reactive and conducts heat and electricity well. Aluminum alloy, on the other hand, is a mixture of aluminum with other elements such as copper, magnesium, or silicon. These alloys are stronger, more durable, and have improved mechanical properties compared to pure aluminum. They are also less prone to corrosion and can be tailored for specific applications, making them widely used in industries like aerospace, automotive, and construction.