high purity alumina tube 99% service temperature 1800C alumina tube for tube furnace
Product Description
High purity ceramic alumina tube parameters:
1.Material : High purity alumina oxide 95%-99%.
2.Application: Used for all kinds of electric heating equipment and electric equipment, and textile machinery.
3.Good smooth and high strength.
4. Diameter from 1mm to 120mm,Length from 100mm to 2000mm.
multi bores tubes can be made.
5. Max working temperature 1800.
6. Out surface can be grinded drilling hole to make tight tolerance and right instillation.
7.Large quantity in stock makes fast delivery and competitive prices.
8.OEM and ODM are welcomed.
Alumina (Al2O3) has a wide application due to its versatility and low material cost. Alumina possesses a high melting point, strong hardness, and good chemical stability, making it a good material to withstand high temperature and chemical corrosion. Our alumina furnace tubes, alumina thermocouple protection tubes and insulators, and alumina rods are available in a variety of diameters and lengths. Call for any custom production request.
Main performance index about alumina ceramic tube:
Product Description
High purity ceramic alumina tube parameters:
1.Material : High purity alumina oxide 95%-99%.
2.Application: Used for all kinds of electric heating equipment and electric equipment, and textile machinery.
3.Good smooth and high strength.
4. Diameter from 1mm to 120mm,Length from 100mm to 2000mm.
multi bores tubes can be made.
5. Max working temperature 1800.
6. Out surface can be grinded drilling hole to make tight tolerance and right instillation.
7.Large quantity in stock makes fast delivery and competitive prices.
8.OEM and ODM are welcomed.
Alumina (Al2O3) has a wide application due to its versatility and low material cost. Alumina possesses a high melting point, strong hardness, and good chemical stability, making it a good material to withstand high temperature and chemical corrosion. Our alumina furnace tubes, alumina thermocouple protection tubes and insulators, and alumina rods are available in a variety of diameters and lengths. Call for any custom production request.
Main performance index about alumina ceramic tube:
Project | Test the condition | Unit | 99 porcelain | 95 porcelain | Talc porcelain | |
Backbone | 99%AL2O3 | 95%AL2O3 | MgO.SiO2 | |||
Physical property | Density of volume | Normal atmospheric temperature | g/cm3 | 3.8 | 3.6 | 2.8 |
Airtight | Normal atmospheric temperature | . | .Pass | Pass | - | |
Absorbing water rate | Normal atmospheric temperature | % | 0 | 0 | 0 | |
Temperature that frit | °C | 1800 | 1650 | 1350 | ||
Mechanical performance | Rockwell hardness | Normal atmospheric temperature | HRA | 88 | 86 | 76 |
Resist the intensity of turning back | Normal atmospheric temperature | Mpa | 350 | 320 | 150 | |
Compression strength | Normal atmospheric temperature | Mpa | 1300 | 1200 | 900 | |
Hot performance | Use temperature at most | °C | 1700 | 1600 | 1200 | |
Heat resistant shaking | 20O°C-1100O°C | 10Num | Pass | Pass | Pass | |
Hot coefficient of expansion | 20O°C-80O°C | ×10-6mm/°C | 6.5-8.5 | 6.5-8.0 | 5.0-6.2 | |
Heat-conduction rate | 25°C | W/m.k | 29 | 25 | 2.9 | |
300°C | W/m.k | 18 | 13 | 2 | ||
Dielectric constant | The medium lossing | 1MHz2O°C | ×10-4 | ≤2.5 | ≤4 | ≤8.0 |
The angle tangent is worth | 1MHz8O°C | ×10-4 | ≤3.5 | ≤4.2 | - | |
Dielectric strength | Normal atmospheric temperature | KV/mm | 15 | 16 | 20 | |
Dielectric constant | 1MHz2O°C | 9-10.5 | 9-10 | ≤7.5 | ||
Resistivity of volume | 2O°C | Ω.cm | >1012 | >1012 | >1013 | |
10O°C | Ω.cm | 1012-1013 | 1012-1013 | 1010-1011 | ||
30O°C | Ω.cm | >1012 | ||||