depleted uranium

Depleted uranium is a dense, metallic material left over after enriching natural uranium to produce nuclear fuel or weapons. It contains mostly uranium-238, with most of the more radioactive uranium-235 removed. Because of its high density, depleted uranium is used in military armor and armor-piercing projectiles, enabling them to penetrate tough targets effectively. Although it is less radioactive than natural uranium, it can still pose health risks if ingested or inhaled as dust. Its use is controversial due to potential environmental and health concerns, but it remains valued for its potent physical properties in military applications.