tungsten crucible for growing sapphire manufacturer

 tungsten crucible for growing sapphire manufacturer
1.Grade: W1, W2

2. Purity: W≥99.95%.

3. Characteristic:

 Density: 19.2 g/cm3.

4. Certificate: ISO9001

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
Sintering finishing	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 rare 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.