Polycarbide was a component [source needed] of the dalekanium metal 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." (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)