Durabyllium

Durabyllium is, like every other metal in Transformers, the strongest metal that exists.

Fiction

Toy bios

The Technobot Nosecone's altmode's drill could pierce almost anything and was practically indestructible because it was made from durabyllium-steel alloy. Nosecone's toy bio

Marvel The Transformers comics

Shooting the tank in front of Autobot Headquarters and doing no damage at all, either Rumble or Frenzy guessed that the vehicle was tougher than a block of triple-strength durabyllium steel. Command Performances! He was correct. Dread Tidings #285

Unicron Trilogy

Durabyllium was the hardest metal in the galaxy and it was used in the construction of all Transformers. Optimus Prime vs Megatron: The Ultimate Battle

Prime cartoon

Among other items, Starscream selected a durabyllium drill to install his treacherous clone's T-cog on himself. He never got to use it, however, since he got curious when he detected the Decepticons dispatching four teams to locations around the globe. Triangulation

2005 IDW continuity

The Protectobot Rook is equipped with 'durabyllium super-alloy armor'. It didn't save him from being blown up after being shot by Atomizer while the former was trapped in a forced coma. Journey's End

Games

Transformers Roleplaying Game

The Joint incorporated an impenetrable durabyllium door. Cobra/Con Fusion

Notes

• When "Command Performances!" was reprinted in The Transformers Classics, Vol. 2, a printing error caused the metal to be misspelled as "Durasyllium".