Captain America's shield has a wizard is a sphere made of alloyed steel ADA artificial Adamantium domain (the materials used to make Wolverine's claws) and adored Vibranium alloy (a very rare specialty metals on Earth) by Dr. mairon Mac Lane. Who discovered iron of this kind cannot be reproduced, it is one object in the universe, and the strong shock and the domain, the ADA has more sensitivity, but also in aluminium.