<P> In issue #7 of the Marvel series Strikeforce: Morituri the shield is stored in a trophy room belonging to the alien "Horde" invaders . </P> <Ul> <Li> Ultimate Captain America uses a shield of pure adamantium, although that metal may not possess the same properties in the Ultimate Marvel universe as it does in the mainstream Marvel Universe . The shield was destroyed when Gregory Stark smashed it with Thor's hammer, though Captain America would wield another later . <Ul> <Li> In Ultimate Nightmare, Ultimate Captain America encounters his Russian counterpart, who has been driven mad due to being trapped in an underground complex for many years . He has created a "replica" of the shield, which turns out to be made out of scrap metal and human remains and grafted directly onto his forearm, and which proves far less powerful than Captain America's own shield . </Li> </Ul> </Li> <Li> In the alternate reality shown in What If ...? #114, where the heroes and villains are unable to leave Battleworld at the conclusion of the Secret Wars, the shield is passed on to the daughter of Captain America and Rogue . </Li> </Ul> <Li> Ultimate Captain America uses a shield of pure adamantium, although that metal may not possess the same properties in the Ultimate Marvel universe as it does in the mainstream Marvel Universe . The shield was destroyed when Gregory Stark smashed it with Thor's hammer, though Captain America would wield another later . <Ul> <Li> In Ultimate Nightmare, Ultimate Captain America encounters his Russian counterpart, who has been driven mad due to being trapped in an underground complex for many years . He has created a "replica" of the shield, which turns out to be made out of scrap metal and human remains and grafted directly onto his forearm, and which proves far less powerful than Captain America's own shield . </Li> </Ul> </Li> <Ul> <Li> In Ultimate Nightmare, Ultimate Captain America encounters his Russian counterpart, who has been driven mad due to being trapped in an underground complex for many years . He has created a "replica" of the shield, which turns out to be made out of scrap metal and human remains and grafted directly onto his forearm, and which proves far less powerful than Captain America's own shield . </Li> </Ul>

What kind of metal is captain america shield