Alumina and Corundum Ceramic Crucibles
Description
High Purity Alumina and Corundum Ceramic Crucible Manufacturer
High purity alumina and corundum ceramic crucibles are widely used in laboratories, universities, research institutes, and industrial production facilities for high-temperature testing, sample analysis, and metal melting applications. Manufactured from premium aluminum oxide (Al₂O₃) materials, these ceramic crucibles offer excellent thermal stability, outstanding chemical resistance, and long service life under demanding operating conditions.
As a professional alumina crucible manufacturer, we supply a complete range of high-temperature ceramic crucibles in standard and custom designs. Available shapes include cylindrical, square, rectangular, curved, conical, and other customized configurations according to customer drawings or application requirements.
What Is an Alumina Crucible?
An alumina crucible is a high-temperature ceramic container made primarily from aluminum oxide (Al₂O₃). Due to its high purity and excellent heat resistance, it is commonly used for material testing, thermal analysis, ash determination, powder sintering, and metal melting.
Compared with ordinary ceramic containers, high-purity alumina crucibles provide superior resistance to corrosion, oxidation, and thermal shock. They are widely used for processing non-ferrous metals, precious metals, advanced ceramic materials, and various chemical compounds.
Alumina and Corundum Ceramic Crucibles Features
Our corundum ceramic crucibles are manufactured using high-quality alumina powder and advanced slip-casting technology, resulting in a dense structure with low porosity and excellent mechanical strength.
High Alumina Purity
With an Al₂O₃ content exceeding 99%, these crucibles offer outstanding chemical stability and minimize contamination during laboratory testing and industrial production processes.
Excellent High Temperature Resistance
The alumina crucible can withstand continuous operating temperatures up to 1600°C and short-term temperatures reaching 1800°C. This makes it suitable for applications involving molten metals, ceramic powders, glass materials, and heat treatment processes.
Superior Thermal Shock Resistance
The dense ceramic structure allows the crucible to resist rapid heating and cooling cycles without cracking easily. This feature significantly improves durability and reduces replacement frequency.
Corrosion and Chemical Resistance
High-purity alumina ceramic demonstrates excellent resistance to acids, alkalis, oxidation, and molten metal attack, ensuring reliable performance in aggressive environments.
High Density Structure
Manufactured through precision slip-casting processes, the crucibles feature high density, low water absorption, and enhanced mechanical strength for long-term use.
Available Sizes and Capacities
We offer a wide range of alumina crucible sizes to meet laboratory and industrial requirements:
– 5 ml alumina crucible
– 10 ml alumina crucible
– 15 ml alumina crucible
– 20 ml alumina crucible
– 25 ml alumina crucible
– 30 ml alumina crucible
– 50 ml alumina crucible
– 100 ml alumina crucible
– 150 ml alumina crucible
– 200 ml alumina crucible
– 250 ml alumina crucible
– 500 ml alumina crucible
– 1000 ml alumina crucible
– 2000 ml alumina crucible
– 2500 ml alumina crucible
Custom sizes, wall thicknesses, and special shapes are available upon request.
Basic Properties of Alumina Ceramic Crucibles
| Property | Value |
|---|---|
| Chemical Composition – Al2O3 | ≥99% |
| Chemical Composition – R2O | ≤0.2% |
| Chemical Composition – Fe2O3 | ≤0.1% |
| Chemical Composition – SiO2 | ≤0.2% |
| Bulk Density (g/cm³) | ≥3.80 |
| Apparent Porosity (%) | <1% |
| Flexural Strength (MPa) | >350 |
| Compressive Strength (MPa) | >12000 |
| Dielectric Constant (Σ 1MHz) | 2 |
| Operating Temperature (°C) | 1800 |
Specifications & Applications
| Name | Dimension (mm) | Volume (ml) | Application |
|---|---|---|---|
| Square Alumina Crucible | 60~200 × 30~150 × 15~190 | ≥2, 5~5000 | Used for firing phosphors, rare earth materials, precious metals, high/medium/low temperature ceramics, NTC thermistors, PTC ceramics, lithium cobalt oxide, lithium manganese oxide powder |
| Round Bottom Alumina Crucible | 20~200 × 20~300 | ≥2 | For laboratory and industrial analysis, suitable for precious metal and rare earth melting |
| Straight Wall Alumina Crucible | 15~300 × 15~300 | ≥2 | Applied in electronics, chemical industry, and special ceramics production |
Applications of Alumina and Corundum Ceramic Crucibles
High-temperature alumina crucibles are widely used in various industries, including:
Laboratory Analysis
– Ash content testing
– Sample preparation
– Thermal analysis
– Chemical experiments
– Material characterization
Metal Melting
– Gold melting
– Silver melting
– Platinum processing
– Copper melting
– Aluminum alloy testing
– Non-ferrous metal analysis
Industrial Applications
– Powder metallurgy
– Ceramic sintering
– Glass manufacturing
– Heat treatment
– Refractory material testing
– Battery material research
Research and Development
Universities, laboratories, and research institutions frequently use alumina ceramic crucibles for high-temperature experiments requiring excellent purity and contamination control.
Why Choose Our Alumina Crucibles?
– Al₂O₃ purity above 99%
– Maximum service temperature up to 1800°C
– Excellent thermal shock resistance
– High density and low porosity
– Multiple standard sizes available
– Custom manufacturing service
– Consistent product quality
– Suitable for laboratory and industrial applications
Whether you require a small laboratory alumina crucible for sample testing or a large-capacity corundum ceramic crucible for industrial melting operations, we can provide reliable high-temperature ceramic solutions tailored to your specific requirements.
Contact us today for technical support, custom designs, or a quotation for high-purity alumina crucibles and corundum ceramic crucibles.
Contact Us
We usually reply within 24 hours. For urgent inquiries, please contact us directly on WhatsApp.
