Aluminum oxide is widely used as an abrasive material due to its hardness. It is a key component in sandpaper, grinding wheels, and cutting tools, making it essential in metalworking and woodworking industries.

In the electronics sector, it serves as an insulating material in integrated circuits and substrates for electronic components, thanks to its excellent electrical insulation properties.

It is also utilized in the production of ceramics, where it enhances strength and durability. Additionally, aluminum oxide is used as a catalyst support in chemical reactions, particularly in refining and petrochemical processes.

In the medical field, it is employed in the manufacture of biocompatible implants, such as dental and bone replacements, due to its inertness and resistance to wear.

Furthermore, it is a crucial ingredient in the production of aluminum metal through the electrolytic process, playing a vital role in the metallurgical industry.