BeNb2In

BeNb2In is an intermetallic compound combining beryllium, niobium, and indium in a fixed stoichiometric ratio. This is a research-phase material rather than an established commercial alloy; intermetallic compounds of this type are investigated for specialized applications requiring combinations of low density, high stiffness, and thermal stability that are difficult to achieve in conventional alloys. The beryllium-containing family offers potential for aerospace and defense applications where weight reduction is critical, though processing complexity and beryllium toxicity concerns typically limit adoption to high-value, performance-critical systems.