Armadium is a neutral and exotic element in No Man's Sky and it is rare to get in the game. It can be found at depots, and you can find them by using the Exocraft Signal Booster, selecting the Subspace radar and then you scan for depots.
When at the Galactic Trade Network, it has a value of 27.5.
Armadium is included in:
An Exocraft Acceleration Module
An Exocraft Mining Laser.
Special thanks to Corey Oldenburg for helping me to create this page!