1. Material: 95% alumina ceramic
Alumina ceramics with superior strength, hardness, insulation,
thermal conductivity, high temperature, oxidation resistance,
corrosion resistance, abrasion resistance, high temperature
strength and other characteristics, it has been widely used in
engineering, mechanical seals, electronics, instrumentation,
sensing, transport, communications, and other occasions or areas.
The content of 99.7%, 99%, 95% alumina products contains the
crucible, sockets, valves, electrodes, spools, wear board, alumina
balls, electronic porcelain, textile porcelain pieces, and other
shaped pieces.
2.Material Parameters
| Performance For Industrial Ceramic |
| Item | | Unit | 90 Al2O3 | 95 Al2O3 | 99.7 Al2O3 |
| Physical Characteristics | Heat resistance | 0C | 1500 | 1550 | 1800 |
| Bulk density | g/cm3 | 3.6 | 3.6 | 3.9 |
| Water absorption | % | 0 | 0 | 0 |
Mechanical Characteristics | Flexural strength | Mpa | 320 | 340 | 360 |
| Hardness vickers | Gpa | 12.2 | 13.5 | 15.6 |
| Elastic modulus | Gpa | 280 | 320 | 370 |
| Poisson’s ratio | | 0.22 | 0.23 | 0.23 |
| Thermal Characteristics | Linear expansion coefficient | (20-5000C) 10-6/0C | 7.1 | 7.2 | 8 |
| Thermal conductivity | w/(m.k) | 16 | 24 | 32 |
| Specific Heat | *10-3J/(kg*K) | 0.78 | 0.78 | 0.9 |
Electrical Characteristics | Dielectric constant (1MHZ) | - | 9 | 9.4 | 9.9 |
| Dielectric loss angle | *10-4 | 15 | 5 | 1 |
| Dielectric strength | *106V/m | 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 |
We can supply the products according to customer's drawings,
samples and performance requirement.
3.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.
Product Performance
--High thermal conductivity
--High flexural strength
--High temperature
--Good electrical insulation
--Low dielectric constant and loss
Forming Methods Includes
Drying pressing
Isostatic pressing
Hot pressing casting
