There is very little real science involved in the meta-material known as Vibranium in the Marvel comics and Marvel Cinematic Universe. If such a material existed with these properties, it’s value would be without measure. With that said, we will discuss the capacities of the material in conjunction with its depictions in Marvel franchise materials.
The Answer-Man’s Archives: Vibranium
Vibranium is nowhere near the hardest or strongest metal in the Marvel Universe. It is, in the Marvel Cinematic Universe, the most inconsistent of meta-materials, having properties which reinforce and yet contradict previous depictions. And yet, we don’t care. As long as it’s doing cool stuff, we accept its properties and handwave them through.
Vibranium’s inherent strength has little to do with why it is highly prized as part of an armor package. Instead, it is the underlying properties of the meta-material which creates its fantastic value and makes it one of the most sought-after materials on Marvel’s Earth.
Found only in the African nation of Wakanda, the technologies pioneered through the study of Vibranium give Wakandan science an extraordinary advantage making it one of the most technologically-advanced nations on Earth.
Defences made with Vibranium are extremely tough, durable, and extremely stress-tolerant. In the Marvel Cinematic Universe, Vibranium alloys might be some of the strongest metals on Earth (so the claim does have a degree of merit in the MCU, if no place else).
Why Vibranium matters
Where most metals have only their inherent durability to offer as a defensive measure, Vibranium and alloys of the metal have an extra meta-material property not found in any metals on Earth: The harder you hit Vibranium, the stronger it gets (until it breaks)…
We know Vibranium has limits to how much energy it can absorb (at least in the comics) when Iron Man and the Sub-Mariner team up against ROXXON, (after the standard superhero conflict in, Iron Man vol 1, #121). -Is Vibranium the strongest material in the Marvel Cinematic Universe?