Adamantium is a virtually indestructible man-made steel alloy which does not occur in nature and whose exact chemical composition is a United States government classified secret. Adamantium is not an element: its properties do not qualify it for any known space on the Periodic Table of Elements. It is an extremely rigid steel-based alloy that the density is virtually indestructible. A sufficient amount is capable of surviving multiple nuclear explosions or a blow from the most powerful superhuman with no damage. A blade of pure, primary Adamantium is capable of cutting almost any known substance, with the known exception of Captain America's shield. The ability to slice completely through a substance with an Adamantium blade depends upon the amount of force being exerted and the hardness of the material in question. Adamantium's molecular integrity makes for an extremely hard metal capable of drilling with greater effectiveness than Vibranium. Furthermore, after several years of additional testing and research, MacLain eventually released his sole supply of Adamantium to the US government who had the Avengers, notably Thor and Iron Man unleash their full power against it, confirming it to be essentially indestructible.
Creating even a small amount of Adamantium is astronomically expensive, and only a few people know the complete formula. Adamantium is created by mixing certain chemical resins together. The exact composition of these resins is a closely guarded secret of the United States government. When these resins are mixed and kept at a temperature of 1,500 degrees Fahrenheit, the resulting liquid can be cast or worked into a particular shape. After an eight minute 'flux period', the mixture sets and becomes solid regardless of temperature. Its molecular structure is extremely stable, and its shape can only be altered by precise molecular rearrangement. However, due to the sheer bonding strength of Adamantium, there are few known forces capable of altering its molecular structure.
Some supervillains have taken to harvesting existing sources of Adamantium, hoping to utilize it through molecular rearrangement. Apocalypse harvested Adamantium from Sabretooth's skeleton, and Gambit in turn got Adamantium from Constrictor to save Sabretooth's life. Genesis harvested Adamantium from Cyber by destroying his body's organic matter, leaving only his Adamantium-laced skin.
Hercules, the demigod of Greek myth, wielded an enchanted golden mace, which (according to legend) was made of Adamantine and supposed to be indestructible. Inspired by this myth, Dr. Myron MacLain sought to create an indestructible alloy for the American side during World War II. At one point he fell asleep at his lab bench, and the metals he was working with somehow bonded together. This mysterious alloy--a combination of steel, Vibranium, and an unknown catalyst--created a material stronger than any yet known. However, without knowing the exact ingredients and their proportions, MacLain could never duplicate the process. The sample was worked into a disc, which became Captain America's Shield. MacLain's later attempts to duplicate the material included a formula without Vibranium, which resulted in the creation of True Adamantium, which is almost as strong as Captain America's shield.
Although True Adamantium is thought to be indestructible, there are at least two known examples of the alloy within the Earth-616 reality sustaining damage without molecular manipulation. The first involved Thor focusing all of his strength into striking a small cylinder of Adamantium with Mjolnir, which only slightly dented. The second incident involved a battle between Ultron and the Hulk. During the fight, the Hulk punched the robot with enough force to slightly dent it.
Because True Adamantium is exceptionally difficult and expensive to create, various researchers found a more cost-effective way to duplicate it, at the expense of quality and durability. This alternate version, referred to as Secondary Adamantium, is considerably stronger than even titanium and is resistant against most assaults. However, assaults from sufficiently powerful weapons or beings can warp or break it.
This is the original Adamantium created by Dr. MacLain. Proto-Adamantium is the official name for the metal that makes up Captain America's Shield. It has never been recreated and is the absolutely most indestructible item in all of existence. It has only ever been damaged or destroyed five times: by Doctor Doom with the powers he stole from the Beyonder, by Thanos with the power of the Infinity Gauntlet, by Molecule Man and his total control over matter, by Thor wielding the Odin-Force, and by the Serpent after augmenting his strength with the fear of people from all over the world.
Also known as Primary Adamantium, this is an attempt at the recreation of Proto-Adamantium. This is the Adamantium present in Wolverine. It is nearly as strong or durable, but unlike Proto-Adamantium, Primary Adamantium is able to be reproduced. Only beings with godlike powers (such as Rune King Thor) or with strong magnetic powers (like Magneto) can manipulate Primary Adamantium. Otherwise, it is completely indestructible to all forms of attack. Being this strong, it is very rare and expensive to create or manipulate and is top secret in the US government, though it has been shared with some of their "allies". Once liquid Adamantium cools and hardens, it can never be manipulated again, although it can be destroyed by Antarctic Vibranium, which dissolves all metals. As well as cleaved by the Ebony Blade which was proven in a court case overseen by Councilor Nelson to dispute the authenticity of which after a phony was being passed around.
This is much easier to work with, making it much more cost effective though at the expense of its strength. Secondary Adamantium also called Adamantium Steel, was created retroactively after too many instances of the supposedly-unbreakable metal Adamantium getting broken were written. It's resilience varying in-between showings; at one point someone with considerable superhuman strength, such as Thor, can break it or warp it by fully exerting their strength. While at another showing its durability being such that not even beings of considerable might, like The Power Skrull or Frenzy, being unable to make something of similar make budge.
Wolverine's skeleton was originally reinforced with True Adamantium. His mutant Healing Factor not only allowed him to survive the process, but it also induced a molecular change in the metal. Adamantium Beta functions like True Adamantium but does not inhibit the biological processes of bone. This fact only became apparent after Magneto forcibly extracted the Adamantium from Wolverine's skeleton. On occasions where Wolverine lost his mutant regeneration ability, he was gradually poisoned by the Adamantium each time.
In the Earth-1610 reality, Adamantium is still a highly durable alloy but it does not share the indestructible properties of its mainstream counterpart. For example, the Hulk was able to break an Adamantium needle, and also rip Wolverine's body in half who was bonded with Adamantium inside his skeleton. Another incident regarding Adamantium's durability involved Sabretooth; he possesses four Adamantium claws implanted within each forearm, through circumstances yet to be revealed, one of the claws implanted within his left forearm is broken. Lady Deathstrike, possessing an Adamantium laced skeleton, had her neck broken during a battle with Longshot when he used his ability to affect probability. Valkyrie and George Stark destroyed Captain America's Adamantium shield. The material is also highly effective in blocking telepathic probes, a trait that Adamantium in the Earth-616 reality does not possess. Aside from being highly durable and effective at blocking telepathy, nothing else about Ultimate Adamantium has been revealed. It isn't known when Adamantium was first created, who is responsible for its creation, and what the properties and processes required for making it are. As a result, it isn't even known if Ultimate Adamantium is created in the same way as the Earth-616 version.
On one occasion, Vance Astro of the 31st-century Guardians of the Galaxy of Earth-691 was wounded in a battle with the warlike alien Stark. The alloy suit that protected Astro (Earth's first interstellar astronaut) during his trip to Alpha Centauri was damaged. His teammates repaired the damage by applying a flexible Adamantium cast to his arm and chest.The most likely conclusion is that Earth-691 found a way to create Adamantium cheaply and quickly and in a mesh or flexible form.
In Earth-9047 ("the Humorverse"), Adamantium is sometimes referred as "Adam Ant Steel", "Adamantheants" or Adam-antium It is indestructible and was used for the skeleton of Woof'r'eam.
Much like his Earth-616 counterpart, Wolverine has had Adamantium bonded to his skeleton. However, the history of the material differs greatly from Earth-616. In this reality, Adamantium appears to be at least partially composed of an unknown element from a meteor that crash landed in Africa. William Stryker gathered the material and through unknown means created Adamantium.
The Adamantium itself appears to function like Earth-616 Adamantium. It appears to be mostly indestructible, and must be super-heated in order to be malleable, but appears to permanently solidify within seconds of being removed from heat. Also, due to its sheer density and molecular structure, adamantium appears to retain its solid form.
This type of Adamantium appears to lose its durability when expose to extreme heat, as the Silver Samurai was able to cut Wolverine's claws off with a super-heated Adamantium katana, though this make sense as it's a call back to Stryker explaining that Adamantium is malleable when super heated but becomes permanently indestructible when cooled. This suggests that Adamantium is only indestructible when at room temperature, however, Adamantium will still remain solid even when heated to become white-hot, as Stryker also stated that Adamantium must be kept heated in its liquid state, otherwise it becomes impossible to alter its molecular structure through any human means or with any other man-made material. Also, in order to damage Adamantium at high temperatures, another object made out of Adamantium is required.
Like his mainstream counterpart, Magneto of Earth-10005 is able to affect Adamantium with his magnetic abilities and as used this to immobilize Wolverine a number of times. Unlike his mainstream counterpart, Magneto has never attempted to rip the Adamantium from Wolverine's bones. So, it is unknown if Magneto can reshape it like he could other metals.
Like its Earth-616 counterpart, Earth-10005 Adamantium is apparently expensive to make. General Munson told William Stryker that he had spent $500 million to bond the metal to Wolverine's skeleton and the Silver Samurai had bankrupted Yashida Corp amassing Adamantium.
Serafina claims that Adamantium has thirteen allotropes, all of which are "unstable, and short-lived, but virulently poisonous". She throws a small device that clamps onto Wolverine's claws and makes them glow green, claiming that it is "Adamantium nine". This causes Wolverine to become stricken, incoherent and collapse.
Carbonadium is a resilient, unstable metal that is vastly stronger than steel, but more flexible than Adamantium. Carbonadium is, in fact, both a more malleable and cheaper version of Adamantium. Due to its malleability, Carbonadium is considerably less durable than True Adamantium though for all practical purposes. Carbonadium is nearly indestructible. Omega Red (an adversary of The X-Men, primarily Wolverine) has carbonadium coils which allow him to drain life energies.
- See also: list of items made of Adamantium
- Lord Dark Wind, Father to Yuriko and founder of the Adamantium Bonding Process.
- Dr. Cornelius and the Weapon X Program frequently made use of an incomplete iteration of the Adamantium Bonding Process on many of it's agents and test subjects.
- Wolverine's claws and skeleton
- Sabretooth's claws and skeleton (occasionally)
- Daken's sheaths over his Muramasa Claw (formerly), adamantium katana swords.
- Battlestar's shield
- M.O.D.O.K's adamantium body (formerly)
- Bullseye's spinal column/partial skeleton
- "The Captain's" shield, used by Steve Rogers and provided by Tony Stark
- Ultimate Captain America's shield
- Baron Helmut Zemo's Swords
- Outer plating of several Ultron bodies
- Hawkeye's Trick Arrows (occasionally)
- The Constrictor's coils (formerly)
- A set of Doctor Octopus's arms (destroyed by molecular rearrangement)
- Lady Deathstrike's claws and skeleton
- Citizen V's Swords
- The cyborg body of Donald Pierce (formerly)
- Adamantium reserves belonging to Khyber
- Cyber's skin and claws, later harvested by Genesis; reacquired later still, then harvested by Ogun; reacquired again in his identity as stinger
- TESS-One's outer skin layer
- The robotic mantle of Alkhema
- Citadel's skin
- Shuri's Panther Habit claws.
- Underworld's bullets
- Romulus's skeleton, nails and claw implants
- Deathlok's skeleton, cartilage, muscle fibers & helmet carapace
- X-23's claws.
- Ricadonna's custom made Scimitar.
- Moon Knight's staff and equipment
- Maverick's Knife and ammo
- Sabreclaw's nail sheaths
- The armor of Omega Red. (possibly)
- Bucky's Captain America suit
- Tiger Shark's Teeth
- Doc Green's Nanite Gamma Cure.
- Bullets used by Ancient Order of the Shield agents.
- Dog Logan's Adamantium Mace
- Kraven the Hunter's hunting knife.
- Iron Man's weapons (occasionally)
- The vault for the Book of the Iron Fist.
- 2nd Constrictor's coils (possibly)
- Moira Kinross uses Adamantium-tipped syringes occasionally, to break tough skins.
- Hammerhead's upper skeleton was replaced by a cybernetic one made adamantium, which was done on Mr. Negative's orders.
- Solem's skin was made of Adamantium.
- The shields of the Von Doom Industries Space Station were made of Adamantium.
- 434 appearance(s) of Adamantium
- 5 appearance(s) in handbook(s) of Adamantium
- 35 minor appearance(s) of Adamantium
- 73 mention(s) of Adamantium
- 7 mention(s) in handbook(s) of Adamantium
- 57 image(s) of Adamantium