Alien "Alloy"
From benscondo.wiki-rpg.com
This strange material comprises the bulk of the hull and structure of the captured alien vessel, and presumably all Collective ships. It is incredibly strong, yet light. Its density is just over 1/2 that of pure aluminum at 1.5 g/cubic cm. It is also non-magnetic. These rather banal facts are really all that is known about the material.
This technology has not been researched yet.