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tungsten crucible
tungsten crucible

high-purity, high-density, no internal-crack.

1Grade: W1, W2, WAL1, WAL2, WAL3

2. Purity: W≥99.95%

3.Characteristic:

Melting Point: 3410 DC

Boiling Point:5927 DC

 Density: 18.5 - 19.3 g/cm3

Size:OD:50-150mm; Height:50-200mm ;

4.Certificate: ISO9001:2008

5. Product Feature: high-purity, high-density, no internal-crack.

6. Dimensions and tolerance(According to clients’ requirements

Delivery condition

Specification

Tolerance

Thickness

Roughness(um)

 

Diameter

Height

Diameter

Height

 

Sintering

10~500

10~750

+/-5.0

  +/-5.0

8~20

<3.5

 

Sinteringfinishing

10~450

10~550

+/-0.5

  +/-0.5

7~18

<2.5

 
 

7. Application:

 Since the melting point of tungsten has reached 3410°C, tungsten crucible is widely applied in industry furnace such as sapphire growth furnace, quartz glass melting furnace, and reare earth smelting furnace. The temperature in working environment of tungsten crucible is above 2000°C. For sapphire crystal growth furnace, high-purity, high-density, no internal-crack tungsten crucible with other features of exact measurement and smooth inner surface has decisive influence on success ratio of seed growth, quality control of pulling crystal, metamictization pot-committed and service life during sapphire growth process.

tungsten crucible

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