Polycarbide
From Tardis Wiki, the free Doctor Who reference
Polycarbide was a component of the dalekanium metal used in the construction of Dalek casings.
The Seventh Doctor described Daleks as "little green blobs in bonded polycarbide armour." (TV: Remembrance of the Daleks)
The Tenth Doctor modified energy blasters to pierce polycarbide and even temporarily disable the Daleks' weapons. (TV: Doomsday)
Nimrod wore bonded polycarbide armour while dealing with vampires. (AUDIO: Project: Twilight)