Vanadium

Vanadium is a type of metal first created by Raynor's Raiders in 2504. It was produced with the results of research conducted by Hyperion scientist Egon Stetmann, who was studying protoss crystals. Stetman discovered the the crystal he was studying had a molecular structure as complex as a biological organism, which made it tough and flexible. Stetmann was able to create vanadium based on these observations. Vanadium is lightweight and diffuses weapon impacts better than traditional armor plating. This results in the forces being trained and built by the Raiders able to take more damage before being destroyed.

In-game, Vanadium Plating is unlocked with five protoss research points, and increases the health of all units by 5% for each armor upgrade researched for them.