Tritanium

Tritanium is a substance from the Beast Wars portion of the Generation 1 continuity family.

Tritanium is an impressively durable metal.

Fiction

Tales of the Beast Wars

Megatron's claws are made from tritanium. Herald

Dreamwave Armada comics

The Mini-Con Moonbase was, among others, enforced with reinforced tritanium. Dreamwave Armada issue 9

Dreamwave Energon comics

Ironhide created a "tritanium-lined resonant space" for a very complicated shock-absorber that would render his seismic-shock warhead useless. Aftershock