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Help CenterFactory-direct High Bulk Density Refractory Fire Silica Bricks
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Specifications
refractory brick and castableHigh bulk density
High compressive strength
High refractoriness
Best Price
Refractory brick and castable
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 and electric heating products.
7) OEM, ODM and OBM are welcomed.
customer's drawings, samples and performance requirement are highly appreciated.
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
| Performance | |||||
| Item | Unit | 95 Al2O3 | 96 Al2O3 | 99 Al2O3 | |
| Physical Characteristics | 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 | (200C-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 | ||||
Details As Pictures:
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