As a subject matter expert in the field of fictional materials, particularly those found within the Marvel Universe, I can provide an analysis of the properties of adamantium and vibranium to determine which is stronger.

Adamantium is a fictional metal known for its incredible strength and durability. It is nearly indestructible and has been depicted as being able to resist virtually all forms of damage. Adamantium is most famously associated with the character Wolverine, whose skeleton and claws are coated with this metal.

Vibranium, on the other hand, is a unique substance that can absorb vibrations and energy, making it incredibly resilient. It is also the metal that constitutes Captain America's shield. Vibranium has the additional property of being able to negate the effects of its own energy absorption when used in small quantities, which makes it incredibly versatile.

When comparing the two, it's important to note that "strength" can be a relative term. If we're talking about resistance to physical damage and being unbreakable, adamantium is often considered the stronger of the two because of its impenetrable nature. However, if we consider versatility and the ability to absorb and negate energy, vibranium has unique properties that could be seen as making it stronger in certain contexts.

In conclusion, while adamantium is nearly indestructible, vibranium offers a range of properties that can make it superior in specific situations. The determination of which is "stronger" depends on the context in which the strength is being measured.

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Vibranium/steel alloy that Captain America's shield is made of is stronger than adamantium. Adamantium was a result of Dr. MacLain trying to replicate the sheid's alloy.read more >>