Tungsten Crucible
Description
Tungsten (W) has a high melting point, anti-friction/corrosion resistance and small thermal expansion coefficient. Tungsten crucible is widely used for sapphire single crystal growth, quartz glass melting, rare earth material melting and electronic spraying.
As a worldwide supplier of tungsten products supplier, Alfa Chemistry supplies all kinds of tungsten crucibles and other tungsten parts including heaters, heat insulation screens, sheets, and supports. These can be used in the process of sapphire growth and rare-earth melting. In addition to the regular sizes, we manufacture the products according to customers' drawings and requirements.
General Properties
| Items | Tungsten Crucible |
|---|---|
| Catalog | ACAM-W-P004 |
| Density | 18.5 ± 0.2g/cm3 |
| Material | Pure W |
| Purity | 99.95% |
| Surface | polished |
| Roughness | Inner surface: Ra≤0.4, Outer surface: Ra≤3.2 |
Size and Tolerance
| Range | Diameter (mm) | Diameter Tolerance (mm) | Height (mm) | Height Tolerance (mm) | Roughness (μm) |
|---|---|---|---|---|---|
| Crucible | 10～500 | ±0.05～±0.5 | 10～500 | ±0.2～±0.5 | Ra≤0.8 |
| Tray | 10～500 | ±0.05～±0.1 | 10～500 | ±0.2～±0.5 | Ra≤1.6 |
| Base | 10～500 | ±0.05～±0.1 | 10～500 | ±0.2～±0.5 | Ra≤1.6 |
| Supporting Rod | 10～100 | ±0.05～±0.1 | 10～500 | ±0.2～±0.5 | Ra≤1.6 |
| Heating | Customized | - | Customized | - | - |
| Shield | Customized | - | Customized | - | - |
| Rod Product | Customized | - | Customized | - | - |
Applications
Tungsten crucible is widely used in the sapphire growth furnaces, quartz glass melting furnace, crystal furnace, induction furnace, sintering metal mold of high melting point, electronic beam coating, and rare earth smelting furnace.