Product Introduction
Alumina ceramic (also called al2o3 or aluminum oxide ceramic) is the most highly regarded and widely used of the ceramic products. It is non-conductive, resistant to corrosion, and are perfect for electrical insulation.
Alumina Tubes as a standard ceramic product. Alumina can take temperatures up to 1650°C, having extremely high temperature stability, chemical corrosion resistance, and high wear and abrasion resistance.
We offer an enhanced range of 99% alumina tubes.
Open and closed ends
Wide variety of sizes, cut to custom lengths
Stock items dispatched within 24 hours
Same day shipping available with express fee
Custom length tubes dispatched within 48 hours
Performance For Industrial Ceramic
Item | Unit | Steatite Ceramic | 95Al2O3 | 99Al2O3 | 99.7Al2O3 |
Physical Characteristics | Bulk density | g/cm3 | 2.7 | 3.6 | 3.8 | 3.9 |
Water absorption | % | 0 | 0 | 0 | 0 |
Mechanical Characteristics | Flexural strength | Mpa | 145 | 320 | 340 | 350 |
Hardness Vickers | Gpa | 5.7 | 12.2 | 13.5 | 14 |
Elastic modulus | Gpa | 120 | 280 | 320 | 320 |
Poisson’s ratio | - | 0.21 | 0.22 | 0.23 | 0.23 |
Thermal Characteristics | Linear expansion coefficient | (20-500 C) 10-6/ C | 7.9 | 7.1 | 7.2 | 7.2 |
Thermal conductivity | w/(m.k) | 2.5 | 16 | 24 | 28 |
Specific Heat | *10-3J/(kg*K) | 0.75 | 0.78 | 0.78 |
|
Electrical Characteristics | Dielectric constant(1MHZ) | - | 6.2 | 9 | 9.4 | 9.7 |
Dielectric loss angle | *10-4 | 18 | 15 | 5 | 0.0001 |
Dielectric strength | *106V/m | 18 | 12 | 15 | 8.7 |
Application :
Widely used in lamps and lanterns, electronic appliances, blast nozzle, auto parts, wear-resistant parts of insulating material, etc
We can do OEM and OBM according to your drawing and requires

