Tungsten has the highest melting point (3422℃) of all the non-alloyed metals. It is a light gray metal that is soft enough to be cut with a hacksaw and ductile enough to be drawn into wire or extruded into various shapes. Tungsten is preferred for its high density, temperature and corrosion resistance, wear resistance, hardness, and low thermal expansion rate. Pure tungsten has a purity of over 99.95%.