Polycarbide

Polycarbide was a material used in the construction of Dalek casings. According to the Tenth Doctor, it was the "skin" of a Dalek. (TV: Doomsday)

The Seventh Doctor described Daleks as "little green blobs in bonded polycarbide armour." This suggests that polycarbide could be another name for Dalekanium or just an early armour that Daleks are protected in before Dalekanium was created. (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)

Kim Kronotska locked C'rizz in cuffs made of bonded polycarbide. (AUDIO: Memory Lane)

Veltrochni firearms used polycarbide projectiles. (PROSE: Mission: Impractical)