Crucibles

Tungsten crucibles

Description Specifications

Thanks to high heat resistance and extraordinary refractory quality tungsten crucibles are used in furnaces operating in vacuum or another shielding medium. Tungsten crucible is used to grow monocrystals (Read more about crystal growing machines on the website page gkmp32.com) for melting, sintering and annealing of powder materials, melting of quartz, rare-earth and refractory metals, and to deposit metallic film in vacuum (the temperature inside a furnace is over 2000°С).

Tungsten crucibles are widely used in metallurgy, metalwork, iron work and chemical industry. However, the most important role tungsten plays in leucosapphire crystal production; high density and purity, no internal cracks and perfectly smooth surface are crucial for quality crystal growing.

The key advantage of our tungsten crucible is that we can delivera customized crucible of any shape or size per Customer’s requirement: circular, rectangular, elliptic, V-shaped, cover-equipped, etc.

The price of a tungsten crucible is conditioned by specific production of tungsten units (tungsten is quite complicated to obtain in pure and rather hardly processed). Apart from that, the price of crucible depends on complexity and configuration, as well as from possible auxiliary requirement that may be imposed.

Technical characteristics:

High tungsten purity – above 99.95%;
High density – 18.2 g/cm³;
Surface roughness - Rz 6.3 max

Tungsten crucible is reliable and durable, has a high strength and elasticity, fit to withstand high temperatures in vacuum and inert gases (up to 2600°С).

Standard dimensions of crucibles:

Diameter (mm)	Wall thickness (mm)	Height (mm)
30-50	8-10	<1300
50-100	8-15	<1300
100-150	10-15	<1300
150-200	12-20	<1300
200-300	15-20	<1300
300-400	15-30	<1300
400-450	15-30	<1300
450-550	15-30	<1300
550-650	25-35	<1300
650-750	25-35	<1300