Duralinium

Duralinium is a mineral used in the construction of buildings and other structures. By the 25th century, Earth was desperate for it and needed it for the construction of residential complexes. Like most minerals, it is found in rock veins. It is highly abundant on the planet Uxarieus; the biggest find in IMC history. (DW: Colony in Space)

The bodies of the Detective Robots were made of duralinium. (DWAM: Gangster's Paradise)