Pure tungsten (chemical symbol: W) is a refractory metal with the highest melting point (3,422°C) and boiling point (5,930°C) of all metals. With a density of 19.25 g/cm³ and exceptional thermal/electrical conductivity, pure tungsten is critical for high-temperature environments, electrical discharge machining (EDM), and radiation shielding. Its inertness in extreme conditions makes it indispensable in aerospace, semiconductor, and nuclear industries.