Alumina Crucibles & Tubes | High Purity Al₂O₃ >99%
Alumina Crucibles & Tubes | High Purity Al₂O₃ >99%
Product Overview
Our high-purity alumina crucibles and tubes are manufactured with Al₂O₃ content exceeding 99%, ensuring minimal contamination of your samples or melts. They offer excellent thermal shock resistance, chemical inertness, and high mechanical strength up to 1750°C. Available in standard sizes or custom dimensions based on your drawings.
Key Features
- High purity (Al₂O₃ >99%) – No contamination of samples
- Excellent thermal shock resistance – Withstands rapid heating and cooling
- Chemically inert – Resistant to most molten metals, fluxes, and acids
- High density (3.85 – 3.90 g/cm³) – Low porosity, good mechanical strength
- Custom sizes – Non-standard dimensions available on request
Technical Specifications
| Item | Specification / Capability |
|---|---|
| Material & Purity | High purity alumina (Al₂O₃ >99%) |
| Bulk Density (g/cm³) | 3.85 – 3.90 |
| Max. Continuous Use Temperature (°C) | 1750°C (short-term up to 1800°C) |
| Flexural Strength (MPa) | ≥ 360 |
| Water Absorption (%) | 0 |
| Thermal Conductivity (W/m·K) | ≈ 32 (at room temperature) |
| Linear Expansion Coefficient (10⁻⁶/°C) | ≈ 8 (200–500°C) |
Standard Sizes – Crucibles
| Capacity (ml) | Top OD (mm) | Bottom OD (mm) | Height (mm) |
|---|---|---|---|
| 3 | 20 | 16 | 17 |
| 5 | 26 | 18 | 21 |
| 10 | 30 | 20 | 28 |
| 15 | 35 | 21 | 30 |
| 20 | 38 | 24 | 35 |
| 30 | 45 | 27 | 39 |
| 50 | 50 | 30 | 48 |
| 100 | 61 | 31 | 60 |
| 150 | 73 | 43 | 67 |
| 200 | 82 | 43 | 70 |
| 300 | 88 | 53 | 85 |
| 500 | 108 | 62 | 108 |
Other capacities (e.g., 25ml, 40ml, 1000ml) and shapes (cylindrical, conical, with lid) available on request.
Standard Sizes – Alumina Tubes
| Outer Diameter (mm) | Inner Diameter (mm) | Length (mm) | Purity |
|---|---|---|---|
| 10 | 6 | 100 – 500 | >99% |
| 15 | 10 | 100 – 500 | >99% |
| 20 | 14 | 100 – 500 | >99% |
| 25 | 18 | 100 – 500 | >99% |
| 30 | 25 | 100 – 500 | >99% |
Custom diameters and lengths (up to 2000mm) available upon request.
Typical Applications
- XRF, ICP, and other analytical sample preparation – melting and fusion
- Small-scale alloy and precious metal melting – gold, silver, platinum
- Crystal growth and material synthesis – high-temperature reactions
- Tube furnaces – alumina work tubes for uniform heating
- Thermogravimetric analysis (TGA/DSC) – sample crucibles
Why Choose FOVO Alumina Products?
- Batch-to-batch consistency – reliable purity and dimensions
- Cost-effective – high quality at competitive prices
- Custom manufacturing – non-standard crucibles and tubes
Need a standard size or a custom crucible/tube? Contact us for a quote – usually within 24 hours.
Request a Quote for This Product
Need a custom size, different thickness, or have a technical question? Fill out the form below, and we’ll get back to you within 24 hours with a quote or solution.
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