Adamantium is a fictional element, the strongest metalalloy known in the Marvel Universe. The name is derived from the word "adamant". The alloy is malleable in its molten state, but is nearly indestructable once cooled. It is used as the key component in several characters' equipment, including Wolverine's claws and skeleton, Bullseye's skeleton and Ultron's robotic body. Captain America's shield is made of an unknown alloy which was reverse-engineered to create adamantium. In the movieX-Men 2, Lady Deathstrike's talons and skeleton are also made of adamantium.
