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Tungsten has unique properties as a high performance material, including a melting point of 3410°C. Tungsten also has a low vapor pressure at high temperatures and a low coefficient of thermal expansion.

Tungsten is also resistant to many molten metals and metal oxides. Tungsten crucibles are commonly used to grow single crystals from fused corundum.

In addition, tungsten crucibles and evaporation boats are also used for the thermal evaporation of different substances. Thus, crucibles are an important component in high-temperature furnaces.

Due to the excellent properties of tungsten, the crucibles and evaporating boats are widely used for growing single crystals from molten corundum, sapphire crystal growth and rare earth smelting.

We supply all kinds of tungsten crucible and evaporating boat (tungsten crucible body and lid, round tungsten crucible, conical tungsten crucible, customized square and rectangular tungsten crucible) and pure tungsten parts (including tungsten heater, thermal insulation screen, tungsten sheet and support, etc.) used in the process of sapphire growth and be used in the smelting of rare earths.

We can also manufacture tungsten products according to customers' drawings and specific requirements.