Durosteel

Durosteel was a metallic material known in the 23rd century.

Durosteel was used in weight-lifting equipment in gymnasiums, and "pumping durosteel" was a slang term for weight-lifting exercise.

A gymnasium in the Orion fortified compound of Skaroskar in the Orion Colony on Daros IV had durosteel weights. Orions pumped durosteel here.