If in case you are not familiar with them, iron and aluminum are known to be two different types of metals that come with different properties. Iron is heavier than aluminum. There are some furniture and other items that are made out of aluminum if people are searching for something that is lightweight.
Aluminum is known to be the most known metal that can be found here on earth. If you would try to use a magnet on aluminum, it will not be magnetized, but if you would use a magnet on iron, you can expect that iron will be magnetized. The boiling and melting point of iron is known to be higher as compared to the boiling and melting point of aluminum.