High alumina ceramic products
Aluminium Oxide Ceramic Tube 99% 1.Great mechanical strength 2.High softening temperature 3.Good resistance to impact 99% al2o3 alumina advanced ceramics
99% al2o3 alumina advanced ceramics
Features:
1) A variety of specifications available.
2) Satisfy various technical request
3) Lower medium spoilage
4) Good insulation performance and high temperature resistance
5) Stiffness texture
6) Used in all electric products, electric heating products and wear resistant machinery parts.
We can supply the products according to customer's drawings, samples and performance requirement.
| Alumina ceramic is kind of structural ceramics, with insulation resistance, voltage resistance, high strength, good thermal conductivity, dielectric loss, stable electrical performance characteristics. Used in electronic ceramic substrates, ceramic electrical insulation, vacuum devices, devices porcelain, spark plugs and other products. We can make the part by hot injection pressing, dry pressing, isostatic pressing and extrusion productive technology etc | ||||||
| Item | Unit | Steatite ceramic | 95 Al2O3 | 96 Al2O3 | 99 Al2O3 | |
| Physical Characteristics | Heat resistance | 0C | 1100 | 1500 | 1550 | 1800 |
| Bulk density | g/cm3 | 2.7 | 3.6 | 3.6 | 3.9 | |
| Water absorption | % | 0 | 0 | 0 | 0 | |
| Mechanical Characteristics | Flexural strength | Mpa | 145 | 320 | 340 | 360 |
| Hardness vickers | Gpa | 5.7 | 12.2 | 13.5 | 15.6 | |
| Elastic modulus | Gpa | 120 | 280 | 320 | 370 | |
| Poisson’s ratio | 0.21 | 0.22 | 0.23 | 0.23 | ||
| Thermal Characteristics | Linear expansion coefficient | (20-5000C) 10-6/0C | 7.9 | 7.1 | 7.2 | 8 |
| Thermal conductivity | w/(m.k) | 2.5 | 16 | 24 | 32 | |
| Specific Heat | *10-3J/(kg*K) | 0.75 | 0.78 | 0.78 | 0.9 | |
| Electrical Characteristics | Dielectric constant (1MHZ) | - | 6.2 | 9 | 9.4 | 9.9 |
| Dielectric loss angle | *10-4 | 18 | 15 | 5 | 1 | |
| Dielectric strength | *106V/m | 18 | 12 | 15 | 15 | |
| Processing technology | ||||||
| Process range (mm) | ||||||
| Outside Diameter | 1---300 | |||||
| Inside Diameter | 0.5---300 | |||||
| Length | 0.5---1200 | |||||
| Accuracy of working (mm) | ||||||
| Perpendicularity | 0.01 | |||||
| Concentricity | 0.01 | |||||
| Roundness | 0.005 | |||||
| Straightness | 0.005 | |||||
| Parallelism | 0.01 | |||||
| Planeness | 0.005 | |||||
| Roughness | 0.05 | |||||
| Fit clearance | 0.005 | |||||
High alumina ceramic products
