Complaint
1) A variety of specifications available.
2) Satisfy various technical request
3) Good insulation performance and high temperature resistance
4) Used in all electric products and electric heating products
Applications
1. Large power equipment
2. IC MOS tube, IGBT chip
3. High frequency power supply
4. Communication, mechanical equipment
5. Strong current, high voltage, high temperature and other thermal heat insulation parts
Properties:
1. High Temperature Up to 1700ºC
2. High Voltage Resistance
3. High Mechanical Strength and Hardness
4. Excellent Insulation Performance
5. High Corrosion Resistance
6. Extremly Abrasion Resistance Performance
7. Wide Scope of Application
For indirect heating of liquids and gases where the element is fitted into a pocket in the process
tank or system. These are installed in larged storage tanks so that the elements may be replaced without draining down the system or vessel.
Data Sheet :
| Item | Unit | Steatite ceramic | 95 Al2O3 | 96 Al2O3 | |
| Physical Characteristics | Bulk density | g/cm3 | 2.7 | 3.6 | 3.6 |
| Water absorption | % | 0 | 0 | 0 | |
| Mpa | 145 | 320 | 340 | ||
| Mechanical Characteristics | Flexural strength | ||||
| Hardness Vickers | Gpa | 5.7 | 12.2 | 13.5 | |
| Elastic modulus | Gpa | 120 | 280 | 320 | |
| Poisson's ratio | - | 0.21 | 0.22 | 0.23 | |
| Thermal Characteristics | Linear expansion coefficient | (20-5000C) 10-6/0C | 7.9 | 7.1 | 7.2 |
| Thermal conductivity | w/(m.k) | 2.5 | 16 | 24 | |
| Specific Heat | *10-3J/(kg*K) | 0.75 | 0.78 | 0.78 | |
| Electrical Characteristics | Dielectric constant(1MHZ) | - | 6.2 | 9 | 9.4 |
| Dielectric loss angle | *10-4 | 18 | 15 | 5 | |
| Dielectric strength | *106V/m | 18 | 12 | 15 |
| Material | 85 Al2o3 | 90 Al2o3 | 95 Al2o3 | 99 Al2o3 |
| Al2o3 | 85% | 90% | 93% | 99.30% |
| Fe2o3 | ≤ 1.0 | ≤ 0.5 | ≤ 0.5 | ≤ 0.3 |
| Desnsity: g / cm3 | 3.4 | 3.5 | 3.6 | 3.85 |
| Vickers Hardness | ≥ 8.6 | ≥ 8.8 | 9 | 9 |
| Water Absorption:% | ≤ 0.2 | ≤ 0.1 | ≤ 0.085 | ≤ 0.01 |
| Refractoriness:°C | 1580 °C | 1600 °C | 1650 °C | 1800°C |
| Flexural Strength:Mpa | 180 | 200 | 240 | 280 |
Wear Rate( at room temperature, erosion, 100 grinding)% | ≤ 3 | ≤ 2.5 | ≤ 1 | ≤ 0.5 |
2:Application:
Electronical Vacuum decices, Cruibles, Insulation plates, Capacitors, Spaceflights, Traffic, Weave, Petro Chemical, Mine, Pharmaceutical Engineering, Communication Engineering and Archtectural, etc
Alumina ceramic sheet is mainly used in high power equipment, IC MOS tube, IGBT patch type thermal conduction and insulation, high frequency power supply, communications, mechanical equipment, strong current, high voltage and high temperature of product parts need to heat conduction and insulation.
