Trinium

Trinium is a metal in the Stargate universe that is used in construction by the Tau'ri, Asgard, Tollan, Goa'uld and other civilizations. It is 100 stronger and lighter than steel in its refined form though very brittle in its ore form. It like Naquadah does not exist in the Earth system naturally. it is alloyed with Naquadah to make the hulls of Daedalus-class ships.