Canon

TR steel

From Halopedia, the Halo wiki

TR steel alloy is a type of steel used by the UNSC for large warships.

Background[edit]

TR steel alloy is used to build the superstructure of the ship before it is plated with vanadium steel and, eventually, Titanium-A battleplate.

A curious feature of TR steel alloy is that, as it is exposed to solar radiation over time, it gradually turns from silver to white. It is easy to tell a ship's age by the color of the TR steel in its superstructure.[1]

List of appearances[edit]

Sources[edit]