FeW3

FeW3 is an intermetallic compound combining iron and tungsten in a 1:3 stoichiometric ratio, belonging to the family of refractory metal intermetallics. While not a common commercial alloy, materials in this iron-tungsten system are of research interest for applications requiring high-temperature strength and wear resistance, particularly where tungsten's refractory properties can be leveraged without the brittleness limitations of pure tungsten. Engineers would consider FeW3-class compounds as candidates for specialized applications demanding extreme hardness or thermal stability, though availability and processing challenges typically limit use to niche aerospace or tool applications rather than commodity applications.