Aluminium weighs less and it doesn't rust. It's about as hard as iron, too.
Aluminium is a metal (an element), not an alloy. This means that it's only made up of aluminium atoms. It has no other impurities in it. Aluminium ore is called bauxite. This has aluminium plus other substances in it, but aluminium on its own is a metal with just aluminium atoms in it.
They are made of aluminium because it is a light metal
Sometimes a hammer can be made out of iron
Various materials examples are: Concrete Aluminium Cast iron
An engine block is usually cast iron or aluminium.
Aluminium would be too brittle, light, and expensive
Most bike hubs are aluminium. Aluminium comes from Bauxite ore, which is refined and the metal aluminium extracted. Axles and bearings are generally steel, which comes from iron ore.
Many vehicles and 70-90% aluminum these days.
Pans can be made of various materials. they can can be made of: Aluminium, Stainless Steel or Cast Iron which is an older one.
Aluminium has some advantages over steel. Since it has a lower density than iron or steel, a car body made from aluminium will be lighter than the same car body made from steel. This results in improved fuel economy. Also, aluminium does not corrode easily, so a car body made from aluminium will corrode less, and may last longer, than one made from steel. However, aluminium is more expensive than steel. So a car made from aluminium is likely to be more expensive than one made from steel.
Aluminium is lighter than iron, conducts heat well, and is less prone to rusting. These properties make it a popular choice for cooking vessels as it allows for even heating and quicker cooking times compared to iron.
For one, the key word in the mineral itself. Iron. Steel is also made from iron ore, or rather the refined version, iron.