Properties and Applications of Tungsten Iron

Tungsten is a silver gray metal. The atomic weight is 183.85. Electronic structure 4f145d46s2. Density (20 ℃) 19.3g/cm3. Melting point 3400 ℃. Boiling point 5555 ℃. Tungsten forms a solid solution with iron and two intermetallic compounds, Fe2W and Fe3W2 or Fe7W6, but they are unstable at high temperatures. The melting temperature of tungsten iron containing 75% to 85% W is higher than 2500 ℃, so it cannot be discharged from the furnace and can only be produced by the block method or iron extraction method. The density of industrial tungsten iron is about 15.3g/cm.