Adamantium
From Multiversal Omnipedia
Adamantium was a virtually indestructible metal alloy created by Dr. Myron MacLain in the U.S. government's most successful attempt to duplicate the unique alloy of which Captain America's shield was made. Adamantium almost precisely matches the material in the shield, save that it lacks vibranium. Adamantium can only be shaped in a molten state- once allowed to cool, only direct molecular rearrangement or cosmic-level power can alter it.
However, adamantium is also very expensive and difficult to produce. As a result, a slightly weaker, slightly easier-to-create variant known as secondary adamantium was invented, which can be damaged by beings with incredible superhuman strength or bizarre powers. However, for all intents and purposes, it's just as good as "true" adamantium. A Russian attempt to duplicate adamantium resulted in carbonadium.
Notable Recepients of Adamantium
Comments
Due to its connection with Wolverine, adamantium has found its way into many of the Marvel media spin-offs.
