Tungsten crucibles are widely used in techniques for growing single crystals from molten corundum, but also in electronic and thermal vaporization techniques – the deposition of various substances. Tungsten crucible has become an important part of high-temperature furnaces due to its high melting point. Pure tungsten and molybdenum parts (including crucibles) can be used for sapphire crystal growth and rare earth melting due to their excellent properties.

Edgetech Industries LLC supplies a wide range of tungsten crucibles (crucible bodies and lids, round, tapered, custom square and rectangular crucibles) and pure metal parts (heaters, heat shields, sheets, and supports, etc.) for use in processes Sapphire Growth, rare earth smelting and other high-temperature furnaces.

Crucibles with outer diameter >100mm are made by sintering, while small crucibles (OD<80mm) are made by drilling tungsten rods. The density of sintered tubes will be smaller than that of forged rods. For crucibles with an outer diameter of 80-100mm, both methods can be manufactured, and the price of the sintered tube will be lower. We are very familiar with our customers’ requirements for tungsten quality; therefore, we produce and supply products with high purity and long service life. The length limits will vary for pipes with different outer diameters.

We can also produce pure tungsten products according to customers’ drawings and specific requirements.

Specifications

Product

Tungsten Crucible

Item No.

PM74-C

Purity

W≥99.95%

Process

Sintering or machining from rod

Surface

Grinding, Finish turning

Pressed and sintered crucibles are mainly used in the bubble ball process of sapphire production. Better sapphire yields and improved quality can be achieved when sapphires are easily extracted. EDGETECH’s tungsten and molybdenum crucibles are heat-resistant and have a smooth surface, making them durable and cost-effective. They are high-density and corrosion-resistant. Our crucibles are made of tungsten or molybdenum with a surface roughness of less than 0.8-1.6 µm. This feature extends the life of the reusable tungsten crucible. When the crucible surface is rough, the sapphire cannot be easily removed, which easily damages the crystal, and the crucible may be damaged in the process. The smooth surface is also resistant to corrosion caused by aggressive molten sapphire.

Dimensions for Tungsten crucibles

OD (mm)

Wall Thickness (mm)

Height(mm)

10 ~ 30

1.0 ~ 3

20 ~ 50

30 ~ 50

2~ 10

20 ~ 100

50 ~ 100

3 ~ 15

30 ~ 150

100 ~ 150

3 ~ 15

30 ~ 500

150 ~ 200

5 ~ 20

30 ~ 500

200 ~ 300

8 ~ 20

30 ~ 500

300 ~ 400

8 ~ 30

40 ~ 500

400 ~ 450

8 ~ 30

50 ~ 500

450 ~ 620

8~ 30

50 ~ 500

Other dimensions can be customized, we can also provide rectangular crucible.

Packing

Tungsten products are fragile and heavy and require careful handling. The standard packaging of goods is wooden boxes to protect the materials during loading, unloading and transportation. Cartons are also used for small crucibles.

Pictures of tungsten

Tungsten Crucible 23
Tungsten Crucible
Tungsten crucible threads
Machined crucible
Tungsten plate-packing
Tungsten Packing
Sintered Tungsten Crucible
Large W Crucible
Tungsten crucibles-small
Crucible with lid
Tungsten crucible & rod
Tungsten Rod & Crucible

We offer tungsten rolled products (plates, sheets, foils), tungsten drawn and forged products (tungsten blocks, rods, bars, wires), tungsten machined parts (tungsten tubes, tungsten heaters, tungsten furnace systems, Customized tungsten), tungsten wire mesh. In addition to formed and machined tungsten products, our specialty tungsten products include tungsten granules (forged tungsten crushing) and porous tungsten (low temperature sintered tungsten). Please send us your request to sales@edge-techind.com