Aluminum itself does not catch on fire easily because it is a non-combustible material. However, when exposed to extremely high temperatures, aluminum can melt and eventually catch fire. In typical household or industrial settings, it is unlikely for aluminum to catch fire on its own.

However, it's important to note that although aluminum does not burn, it can act as a fuel source in certain circumstances. For example, finely powdered aluminum, known as aluminum powder, can be highly reactive and combustible. When the powder is dispersed in the air and comes into contact with a strong ignition source, such as an open flame or spark, it can react vigorously and result in a fire or explosion.

Additionally, if aluminum is in contact with certain strong oxidizing agents, such as certain metal halides or metal oxides, it can undergo a reaction known as thermite reaction. This reaction can generate intense heat and produce molten iron, which can be a fire hazard.

In summary, while solid aluminum is not flammable, certain forms of aluminum, such as fine powders, can be combustible under specific conditions. It is important to handle and store aluminum and its derivatives properly and follow safety precautions to prevent any potential fire hazards.