Вольфрамовый тигель для промышленной

Tungsten (W) is one of the so-called transition metals with the atomic number 74,it's shiny gray metal in a solid state at room temperature.Tungsten has many outstanding characteristics,it has the highest melting point of all metal elements of 3422°C,and boiling point around 5,700°C closing to the surface temperature of Sun,thus it can withstand a very high temperature.With a high density of 19.3 g/cm³, closely to gold density,tungsten is widely used as balance weights for aircraft and helicopter.Tungsten is also resisted to various acid in room temperature,ever for hydrofluoric acid and aqua regia. Tungsten Crucible are characterized by high purity, high density, free of internal cracks, precise size and smooth inner and outer walls, was mainly used as the core container of sapphire growth furnace,quartz glass melting furnace and rare earth blast furnace.Especially for sapphire growth furnace,the tungsten crucible used have an big influence to the seed success rate, pulling quality control,crystal stick pan off and working life for sapphire crystal growing.

Chemical specification and Dimension