Infinitum is an extremely strong metal alloy created by the Tetramands.
Infinitum is gray-colored and is considered one of the strongest alloys ever created. So far, only Taydenite has been shown to be able to pierce it.
Apparently, Infinitum is subjected to extreme pressures or 'pressure-forged,' which gives the alloy its tensile strength. The alloy has been shown to withstand heavy impacts, blaster fire, extreme temperatures and explosions.
Infinitum is the main alloy used to create Tetramand engine blocks, making them virtually indestructible. As a result, they are highly prized and are extremely difficult for outsiders to obtain. The metal is also used as a building material, such as for gates and walls.