2.6g/Cm3 Mullite Ceramic Crucible Kiln Melting Ceramic Sagger
Refractory Mullite Ceramic Crucible Kiln Ceramic Melting Sagger
Furniture Features:
1. Good thermal conductivity
2. Good high temperature strength
3. Wear resistant and erosion resistant
4. Good thermal shock resistance
5. Good corrosion resistance
6. Good oxidation resistance
7. Not easy in deformation and cracking
corundum mullite ceramic
Mullite is a rare silicate mineral of post-clay genesis, It is produced during various melting and firing processes. Corundum mullite crucibles with high temperature resistance has the characteristics of compact structure, high compressive strength, good thermal shock stability, acid and alkali corrosion resistance, anti stripping, anti pulverization and long service life. The products are widely used in the smelting of rare earth magnetic materials, alloy materials and sintering of ceramic powders.
| Item | Test Condition | Unit&Symbol | Cordierite ceramics |
| The main chemical ingredient | MgO, Al2O3,SiO2 | ||
| Bulk Density | gm/cc | 2.6 | |
| Maximum Use Temperature | 1400℃ | ||
| Hardness | HV | 800 | |
| Bending Strength | 20℃ | Kgf/cm2 | 900 |
| Compressive Strength | 20℃ | Kgf/cm2 | 3500 |
| Fracture Toughness | K(I c) | Mpa m1/2 | - |
| Thermal expansion | 1X 10-6/℃ | ≤2.0 | |
| Thermal conductivity | 25℃-30℃ | W/m.k | 1.3 |
| Thermal Shock Resistance | Tc | ℃ | 250 |
| Dielectricity constant | 1MHz.25℃ | 6 | |
| Dielectric strength | ac-kV/mm (ac V/mil) | 10 | |
| Volume Resistivity | 20℃ | ohm-cm | > 1012 |
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