Denscris
Denscris was a durable material with a very high melting point, out of which Imperial pilots' helmets were made.
Appearances
"MedStar: Intermezzo" – Star Wars Insider 83
- Coruscant Nights I: Jedi Twilight (as densecris)
- Death Star (specifically mentioned as densecris)
- Shadows of the Empire novel (First mentioned)