BeNb4W

BeNb4W is a beryllium-niobium-tungsten intermetallic compound that belongs to the refractory metal alloy family, combining the lightweight and high-stiffness characteristics of beryllium with the high-temperature strength and refractory properties of niobium and tungsten. This material is primarily of research and development interest rather than mainstream industrial production, with potential applications in aerospace and high-temperature structural applications where extreme weight savings and thermal resistance are critical. The combination of beryllium's low density with the refractory metals' temperature stability makes it a candidate for advanced aerospace propulsion systems and space structures, though processing challenges and beryllium toxicity concerns limit its current adoption compared to more conventional superalloys and composite alternatives.