Alumina ceramic solid rods are solid bars made from high-purity aluminum oxide. They are widely used as insulating and support components in industrial and laboratory equipment because of their excellent heat resistance, electrical insulation, and strength.
Advantages of Alumina Ceramic Solid Rods
- High temperature stability reduces warping risk during rapid thermal cycling
- Smooth surface minimizes contamination and particle release
- Precise machining allows direct replacement in mechanical systems
- Corrosion resistance supports use in acid/alkaline atmospheres
- Long service life lowers annual maintenance costs
Alumina Ceramic Solid Rods Properties
| Property | Unit | 99.7% Al₂O₃ | 99.5% Al₂O₃ | 99% Al₂O₃ | 96% Al₂O₃ |
| Color | Ivory White | Ivory White | Ivory White | Ivory White | |
| Density | g/cm³ | 3.94 | 3.9 | 3.83 | 3.6-3.75 |
| Water Absorption | % | 0 | 0 | 0 | 0 |
| Hardness | Mohs Hardness | 9.1 | 9 | 9 | 8.8 |
| Flexural Strength (20°C) | Mpa | 330 | 320 | 300 | 260 |
| Compressive Strength (20°C) | Mpa | 2300 | 2300 | 2210 | 1910 |
| Maximum Operating Temperature | °C | 1730 | 1700 | 1680 | 1450 |
| Thermal Expansion Coefficient(25°C to 800°C) | 10⁻⁶/°C | 7.6 | 7.6 | 7.6 | 7.6 |
| Thermal Conductivity (25°C) | W/(m·K) | 29 | 27 | 24 | 22 |
| Dielectric Strength (5mm thickness) | AC-kv/mm | 22 | 21 | 19 | 15 |
| Dielectric Loss at 25°C@1MHz | --- | < 0.0001 | < 0.0001 | 0.0003 | 0.0004 |
| Dielectric Constant at 25°C@1MHz | --- | 9.8 | 9.7 | 9.5 | 9.2 |
| Volume Resistivity (20°C) | Ω·cm³ | >10¹⁴ | >10¹⁴ | >10¹⁴ | >10¹⁴ |
| Volume Resistivity (300°C) | Ω·cm³ | 2*10¹² | 2*10¹² | 4*10¹¹ | 2*10¹¹ |
Specifications of Alumina Ceramic Solid Rods

| Item No. | Diameter (mm) | Length(mm) |
| TE-AT-30001 | 0.5 | ≤3000 |
| TE-AT-30002 | 1.2 | ≤3000 |
| TE-AT-30003 | 1.3 | ≤3000 |
| TE-AT-30004 | 1.4 | ≤3000 |
| TE-AT-30005 | 1.5 | ≤3000 |
| TE-AT-30006 | 1.6 | ≤3000 |
| TE-AT-30007 | 2.2 | ≤3000 |
| TE-AT-30008 | 2.4 | ≤3000 |
| TE-AT-30009 | 3.5 | ≤3000 |
| TE-AT-30010 | 3.8 | ≤3000 |
| TE-AT-30011 | 4.5 | ≤3000 |
| TE-AT-30012 | 5.5 | ≤3000 |
| TE-AT-30013 | 6.3 | ≤3000 |
| TE-AT-30014 | 6.5 | ≤3000 |
| TE-AT-30015 | 6.8 | ≤3000 |
| TE-AT-30016 | 8.3 | ≤3000 |
| TE-AT-30017 | 8.5 | ≤3000 |
| TE-AT-30018 | 9.5 | ≤3000 |
| TE-AT-30019 | 10.5 | ≤3000 |
| TE-AT-30020 | 11 | ≤3000 |
| TE-AT-30021 | 11.5 | ≤3000 |
| TE-AT-30022 | 12.5 | ≤3000 |
| TE-AT-30023 | 13 | ≤3000 |
| TE-AT-30024 | 13.5 | ≤3000 |
| TE-AT-30025 | 14 | ≤3000 |
| TE-AT-30026 | 16 | ≤3000 |
| TE-AT-30027 | 16.5 | ≤3000 |
| TE-AT-30028 | 17 | ≤3000 |
| TE-AT-30029 | 19 | ≤3000 |
| TE-AT-30030 | 21 | ≤3000 |
| TE-AT-30031 | 22 | ≤3000 |
| TE-AT-30032 | 23 | ≤3000 |
| TE-AT-30033 | 24 | ≤3000 |
| TE-AT-30034 | 24.5 | ≤3000 |
| TE-AT-30035 | 42 | ≤3000 |
*Note: The table above shows only some standard specifications. For more specifications, please refer to the complete product catalogue or contact us for customization.
Alumina Ceramic Solid Rod Packing:
Sealed plastic bags, protective foam, export-grade cartons.








