An alloy of ‘Vibranium’ and steel created by accident, this industructable alloy was only made once, in the shape of a test piece which was then presented to Captain America to use as a shield. The indestructible nature of the alloy means it is not possible to characterise. Attempts to recreate the conditions of the alloy lead to the development of Adamantium. The nearly indestructible alloy forcibly implanted into Wolverine.

Captain America before he received his iconic round shield made from Verbranium. Without it he was only able to defeat Nazi’s.
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