Airsteel

Mined from the Clawmark Mines near Dig's End by the Jade Imperium, this magical metal becomes substantially lighter than air when subjected to low-power galvanick lightning (electricity). Considered an eyes-only state secret by the Imperium, Airsteel is the main component in the Keel of the Stratosphere that allows the JIAS Thunderhead to roam the skies of Crescent.