What is iridium used for and what does it make?

Iridium is a dense, corrosion-resistant metal primarily used in high-temperature applications, electrical contacts, and spark plugs due to its durability. It is also employed in various alloys to improve their strength and resistance to oxidation. Additionally, iridium is crucial in the production of certain types of catalysts and is used in the manufacture of specialized glass and electronics. Its unique properties make it ideal for applications in aerospace, automotive, and chemical industries.