Ceramic Crucibles
Alumina Ceramic Crucibles
Alumina Ceramic Crucibles Alumina ceramic crucibles are designed for high-temperature heating, calcination, melting, sample preparation and material testing. Dense alumina provides high hardness, good electrical insulation and resistance to many chemicals, making it suitable for demanding laboratory and industrial environments. TecCera supplies alumina crucibles in standard and custom configurations. Material grade, dimensions and manufacturing method can be selected according to the required capacity, operating temperature, furnace atmosphere, processed material and heating cycle.
Component Types
Alumina Ceramic Crucibles 02
Alumina Ceramic Crucibles 03
Technical Specifications
| Parameter | Typical Value / Range | Unit |
|---|---|---|
| Al₂O₃ Purity | 95-99.8 | % |
| Maximum Operating Temperature | 1600–2000 | ℃ |
| Volume / Capacity | 0.5 – 1000 | mL |
| Shape | Available tCylindrical, square, with/without lid, conical bottom, flat bottom, etc.o drawing | - |
| Thermal Shock Resistance | Good / Medium / Poor | - |
| Density / Bulk Density | 3.6–3.9 | g/cm³ |
| Porosity / Open Porosity | ≤1 | % |
| Dimensional Tolerance / Appearance Precision | ±0.5～±2 | % |
Al₂O₃ Purity
- Typical Value / Range
- 95-99.8
- Unit
- %
Maximum Operating Temperature
- Typical Value / Range
- 1600–2000
- Unit
- ℃
Volume / Capacity
- Typical Value / Range
- 0.5 – 1000
- Unit
- mL
Shape
- Typical Value / Range
- Available tCylindrical, square, with/without lid, conical bottom, flat bottom, etc.o drawing
- Unit
- -
Thermal Shock Resistance
- Typical Value / Range
- Good / Medium / Poor
- Unit
- -
Density / Bulk Density
- Typical Value / Range
- 3.6–3.9
- Unit
- g/cm³
Porosity / Open Porosity
- Typical Value / Range
- ≤1
- Unit
- %
Dimensional Tolerance / Appearance Precision
- Typical Value / Range
- ±0.5～±2
- Unit
- %
Detailed Product Information
Key Properties
- Suitable for high-temperature applications
- Good resistance to many chemicals and corrosive environments
- High hardness and wear resistance
- Dense, low-porosity structure
- Good electrical insulation
- Good dimensional stability at elevated temperatures
- Multiple alumina purity grades available
- Standard and custom sizes available
Actual performance depends on alumina purity, crucible dimensions, furnace atmosphere, processed material, heating rate and operating duration.
Typical Applications
- Laboratory heating and sample preparation
- Calcination, ashing and sintering experiments
- TGA and DSC thermal analysis
- Powder and advanced-material processing
- High-temperature chemical reactions
- Metal melting and processing, subject to material compatibility
- Molten-glass testing, subject to material compatibility
- Gemstone and jewelry refining
- Research and development of ceramic, battery and electronic materials
Custom Alumina Crucibles
Custom crucibles can be manufactured according to your drawings, samples or operating requirements. To recommend a suitable solution, please provide:
- Required dimensions or capacity
- Alumina purity requirement
- Maximum working temperature
- Furnace atmosphere
- Material placed inside the crucible
- Heating and cooling rate
- Required quantity
- Drawing or reference photograph, if available
Frequently Asked Questions
How should I choose between alumina and zirconia crucibles?
The choice should not be based on temperature alone. Alumina is widely used for high-temperature laboratory and industrial applications because of its hardness, chemical resistance and cost effectiveness. Zirconia may be preferable for certain chemical environments or specialized thermal applications. Final selection should consider temperature, atmosphere, processed material and heating cycle.
What is the maximum operating temperature?
The allowable operating temperature depends on alumina purity, crucible dimensions, furnace atmosphere, applied load and operating duration. Please provide your actual working conditions so that the appropriate material grade can be evaluated.
How should alumina crucibles be cleaned?
Allow the crucible to cool gradually before cleaning. The cleaning method must be compatible with both the alumina and the remaining process material. Avoid sudden temperature changes and aggressive cleaning chemicals unless their compatibility has been confirmed.
Are lids available?
Yes. Matching ceramic lids are available for selected cylindrical, square and rectangular crucibles. Custom lid designs can also be evaluated.
What is the minimum order quantity?
Minimum order quantity depends on the dimensions, material grade, tooling requirements and whether the product is a standard or custom design. Please send your specifications for confirmation.