在线聊天
Specifications
1.better air flow2.less backpressure
3 high thermal shock resistance,high strength
Physical Properties:
1) Compressive strength
| Direction | 200 MCI | 400 MCI |
A (minimum) | 15.0 MPa | 15.0 MPa |
B (minimum) | 1.5 MPa | 1.5 MPa |
C (minimum) | 0.2 MPa | 0.2 MPa |
Specimen dimensions Φ25.4 mm, length 25.4 mm from direction A, B and C, where
Speed: 1mm/min | ||
2) Porosity/water absorption
| Item | 200 MCI | 400 MCI |
Minimum | 18.6% | 17.8% |
Maximum | 23.4% | 20.7% |
Average (n>5 per lot) | 22.1% | 19.6% |
Total pore volume | 0.18-0.24 (cm3/g) | 0.18-0.24 (cm3/g) |
3) Bulk density
| 100 MCI | 0.46 g/cm3±15% |
200 MCI | 0.43 g/cm3±15% |
300 MCI | 0.50 g/cm3±15% |
400 MCI | 0.48 g/cm3±15% |
4) Coefficient of Thermal Expansion
| Item | 200 MCI | 400 MCI |
Heating rate | 5C/min, 20C…1000C | 5C/min, 20C…1000C |
Average | 1.5*10-6K-1 | 1.8*10-6K-1 |
5) Thermal Conductivity
1.5…1.6 W/mk at temperature 25C…600C
6) Specific Heat Capacity
At:100C/200C/300C
800KJ/Kg950KJ/Kg2000KJ/Kg
7) Continuous High Temperature Durability
Maximum shrinkage of length after 100 hours at 1200C
200MCI 400MCI
Maximum:0.5% 0.1%
8) High Temperature Stability
Maximum shrinkage after 100 hours at 1450C
200 MCI400 MCI
Maximum2.0%2.5%
9) Gas Flow Resistance
Flow speed 16m/s200 MCI400 MCI
Pressure drop {10-2mmAg/mm} 60130
10) Structural Integrity to Thermal Shock
(Cooling with water)
Cracks start at approx. 800C
No destruction of ceramic bodies until approx. 1180C
11) Softening temperature
Definition: temperature, at which the instantaneous rate of thermal expansion is zero.
Procedure: analogous to coefficient of thermal expansion; determination with extrapolation.
Minimum: 1380C
Chemical Composition:
| Item | Stoneware | Cordierite | Mullite- Cordierite | Mullite |
| SiO2 | 69~71 | 46~48 | 29~30 | 27~28 |
| Al2O3 | 18~20 | 34~37 | 68~69 | 70~71 |
| MgO | 0.15~0.20 | 7.00~7.50 | --- | --- |
| K2O.Na2O.CaO | 3.00~3.30 | 2.50~2.90 | 0.70~0.90 | 0.80~1.20 |
| Fe2O3 | 0.70~0.90 | 0.70~0.90 | 0.50~0.70 | 0.50~0. |
