In the Iron Man 2 novelization, as well as in the junior novelization, the element created by Tony Stark to replace palladium in the Arc Reactor is called vibranium.
Building a small particle accelerator in his garage, Tony was finally able to create a New Element that met his needs, and in turn created a new armor suit to utilize the new power.
However, the majority of the more-advanced suits, starting with Mark III, were made not of iron but of a titanium or titanium-gold alloy. In the 2019 film Avengers: Endgame, the suit was constructed of vibranium and nanotech.
In the Marvel Universe, Vibranium is one of the rarest substances on Earth. In order to obtain it, Tony would have to do international politics with a country that doesn't want to interact with anyone else. If you watched Black Panther, T'Challa is practically invincible with the vibranium armor on.
Tony Stark Discovers a New Element Scene - Iron-Man 2 (2010) Movie CLIP HD
Why didn t Iron Man use vibranium?
Tony had access to other materials and he was free to use and incorporate them into his technology, but Vibranium is a signature of Wakanda and Black Panther; it's part of their identity considering how much of it is used in various forms in the country.
Robert Downey Jr. confirmed that Iron Man 4 is indeed in the works. While negotiations continue for his return, this would mark his 7th appearance in a standalone Marvel movie and his 9th outing as Tony Stark in total.
Tony Stark was kidnapped by the Ten Rings, who tried to force him to rebuild the Jericho missile. Under the guise of doing so, Stark requested a series of weapons that contained palladium and removed eleven strips of palladium from them along with Ho Yinsen.
When you look at the modern periodic table, you won't see gaps and spaces in the order of the elements. New elements aren't exactly discovered anymore. However, they can be made, using particle accelerators and nuclear reactions.
Although he is an extremely skilled marksman, Clint Barton is often considered to be the weakest member of the team seeing as he's just a regular guy with a bow and arrow.
It is not so much that Magneto cannot affect vibranium, but that the metal's vibratory nature and energy-absorption components can be harnessed in such a way that the Master of Magnetism meets his match.
In Marvel Comics, adamantium and vibranium weapons have gone toe-to-toe on several occasions, and the former usually comes out on top. However, in Marvel's live-action projects in the MCU and Fox's X-Men Universe, vibranium is clearly the stronger substance, and the more versatile.
According to Iron Man 2, Howard Stark theorized the creation of the new element and left clues for Tony to find and act upon. Tony applied what his father knew and created the new element to replace the palladium in his deteriorating chest implant.
While it has never been confirmed what Thanos' sword was made of, the Endgame battle hints that it was made of Uru or at least some metal that was as strong as the one from Nidavellir. Thanos was facing, at the same time, Mjolnir, Stormbreaker, Captain American's Vibranium Shield, and Stark's nanotech.
Tony's arc reactor was powered using a palladium core. Over time, the palladium was broken down by neutron damage, releasing deadly toxins into Tony's bloodstream.
In Iron Man 3, Potts is kidnapped by Aldrich Killian, who takes her hostage and injects her with the Extremis as part of his scheme to get revenge on Stark. She later uses her Extremis powers to kill Killian before Stark funds a surgery to cure her of Extremis.
When it was suggested early on in Tony Stark's time in the MCU that he get surgery to remove the shrapnel from his chest, he was decidedly against this. He found out that he would pretty much instantly die if such surgery were performed. Because of how the shrapnel had entered his body, it was impossible to remove.
In the feature films of the Marvel Cinematic Universe, Morgan Stark is the name of Tony Stark and Pepper Potts' daughter, who in the 2019 film Avengers: Endgame, is played by Lexi Rabe.
Though no plans to bring back Robert Downey Jr. as Iron Man have been announced, Tony Stark's legacy is still being felt in the MCU. Riri Williams, who appeared in Black Panther: Wakanda Forever and will be the lead character in the upcoming Ironheart series, is in many ways a direct successor to Tony.
The vigorous and sturdy composition of Thanos' sword could be cosmic in nature, derived from the Celestials. Beings known to have the ability to mold matter itself, it's plausible that the Celestials would craft a tool proficient to beat the best the Nine Realms have to offer, even Uru and vibranium.
Depending on which Vibranium suit he uses, and whether he can get close to Iron Man, the heroic Black Panther might actually be able to defeat Iron Man for real. And even if he cannot, the Wakandan king will give Iron Man a serious challenge in a duel.
The Attack on Wakanda was the result of a successful attempt by Ulysses Klaue, with the assistance of N'Jobu, to steal a cache of vibranium from Wakanda.
