... refractory metal parts. Tungsten has the highest melting point of all metals as well as a remarkably ... the most intense heat. 1.Tungsten electrodes for vacuum furnace:Chemical composition: tungsten >99.95% ( percentage ... Main applications:sapphire single crystal growth furnace, metallurgical industry furnace, vacuum furnace, high temperature furnace, silicon industry furnace, quartz glass, metal extracting, ...