Tungsten Crucible Tungsten pro
Size：according drawing produce
Material：Tungsten 99.95% purity
Tungsten Crucible Features
high temperature resistance
low CTE
High wear-resistance corrosion-resistance
lHigh pyroconductivity
excellent hardenability
2 Tungsten Crucible Application
? Sapphire Crystal Growth
? Quartz Glass
? Coating
? Rear Earth Metallurgy
3 Tungsten Crucible Specification
Tungsten Crucible Dimension
|
Dia(mm) |
Wall Thickness(mm) |
Length(mm) |
|
30-50 |
2-10 |
≤1300 |
|
50-100 |
3-15 |
|
|
100-150 |
3-15 |
|
|
150-200 |
5-20 |
|
|
200-300 |
8-20 |
|
|
300-400 |
8-30 |
|
|
400-450 |
8-30 |
2 Tungsten Crucible Chemical Composition
|
Grade |
W % (≥) |
Residual Elements |
|
|
Total |
Each |
||
|
WAL1,WAL2 |
99.95 |
0.05 |
0.01 |
|
W1 |
99.95 |
0.05 |
0.01 |
|
W2 |
99.92 |
0.08 |
0.01 |
|
Note: K is not as impurities |
|||
3 Tungsten Crucible Material Property
|
Material |
Pure Tungsten |
|
Melting point: |
3420°C±20°C |
|
Boiling point: |
5550°C |
|
Linear thermal expansion Coefficient (20°C) |
4.2×10-6 [m/(m·K)] |
|
Thermal conductivity (20°C) |
164 [W/(m·K)] |
|
Specific heat (20°C) |
0.13 [J/(g·K)] |
|
Electrical conductivity (20°C) |
18 · 106 [1/Ω·m)] |
|
Specific electrical resistance (20°C) |
0.050 [(Ω·mm2)/m] |
