Quantum Inert Alloys is a technology on the Galactic Warfare technology tree with a research cost of 45000 . It unlocks one Special Module (Troops), requires research in Plasmic Ablatives, and allows no further research.
"Improved understanding of the quantum state of materials has resulted in the creation of certain metals that are unchanged by any known electromagnetic or gravitational force."
"The final phase in creating obedient and indestructible ground troops is to remove fallible, slow-to-repair biological systems from them. The most advanced battlefield units are composed of nearly indestructible, highly automated, sentient droids."