W Crucible

Specification

delivery condition 
specification 
tolearance
thickness 
roughness 
diameter 
height 
diameter 
height 
sintered
10-550
10-750
+/-5.0
+/-5.0
8-20
<3.5
sintering finishing 
10-450
10-550
+/-0.5
+/-1.0
7-18
<2.5

 

1. High density;

2. Good corrosion resistance;

3.The surface roughness of tooled crucibles does not exceed Rz 6.3;

4.The use temperature below 2450ºC in vacuum or deoxidize atmosphere;

5.Manufactured based on customers' requiremen.

 

Atomic number 74
CAS number 7440-33-7
Atomic mass 183.84 [g/mol]
Melting point 3420 °C
Boiling point 5555 °C
Density at 20 °C 19.25 [g/cm3]
Crystal structure Body-centered cubic
Coefficient of linear thermal expansion at 20 °C 4.4 × 10-6 [m/(mK)]
Thermal conductivity at 20 °C 164 [W/(mK)]
Specific heat at 20 °C 0.13 [J/(gK)]
Electrical conductivity at 20 °C 18.2 × 106 [S/m]
Specific electrical resistance at 20 °C 0.055 [(Ωmm2)/m]

Quality&Inspection

Application

1. Used for sapphire single crystal growth furnace
2. Applied for quartz glass melting furnace;
3. Used for rare earth smelting furnace;
4. Used for sintering metal molding of high melting point;
5. Widely used in other following industries: Ceramics and metallurgical industries, machinery processing and light industries.

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