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chemical components | Alumina Oxide Porcelain | Mullit porouse porous | Cordierite dense | Cordierite porous | Quartz Porcelain | ||
SiO2 | 43,3 | 28,9 | 57,2 | 51,5 | 66,1 | ||
Al2O3 | 52,0 | 68,3 | 25,5 | 36,4 | 30,4 | ||
MgO | 0,1 | 0,2 | 7,9 | 8,5 | 0,13 | ||
Alkali | 3,2 | 1,9 | 3,1 | 1,3 | 2,8 |
Dimension | Channels | Channel width | Inner walls | Spec. area | Void fraction |
150x150x300 mm | 17 x 17 | 4.2 mm | 1.5 mm | 485 m²/m³ | 54% |
150x150x300 mm | 25 x 25 | 4.9 mm | 1.0 mm | 540 m²/m³ | 67% |
150x150x300 mm | 40 x 40 | 3.0 mm | 0.7 mm | 825 m²/m³ | 64% |
150x150x300 mm | 43 x 43 | 2.95 mm | 0.5 mm | 1000 m²/m³ | 70.7% |
150x150x300 mm | 50 x 50 | 2.4 mm | 0.6 mm | 1050 m²/m³ | 63% |
150x150x300 mm | 60 x 60 | on request | on request | 1353 m²/m³ | on request |
Name | Alumina | Dense Cordierite | Cordierite | Dense Alumina | Mullite | Corundum mullite | ||
Density(g/cm3) | 2.0~2.3 | 2.1 ~2.5 | 1.5 ~1.9 | 2.4 ~2.7 | 2.0 ~2.5 | 2.3 ~2.7 | ||
Coefficient of heat expansion (20~800℃) | ≤5 | ≤3.5 | ≤3.0 | ≤5 | ≤5 | ≤6 | ||
Specific Heat (J/Kg.K) (20~1000℃) | 900-1150 | 900 ~1100 | 900~1150 | 1000~1150 | 1000~1150 | 1100 ~1300 | ||
Thermal Conductivity (W/m.k) (20~1000℃) | 1.5~2.0 | 1.5~2.5 | 1.2~1.8 | 1.5~2.5 | 1.5~2.0 | 1.5~2.5 | ||
Impact Thermal Resistance(℃/min) | ≥300 | ≥350 | ≥350 | ≥300 | ≥350 | ≥300 | ||
Max. Working Tem.(℃) | 1350 | 1320 | 1320 | 1350 | 1450 | 1550 | ||
water absorption(%) | ≤20 | ≤1 | 15~25 | ≤2 | 15~25 | 15 ~25 | ||
compressive strength (MPa) | A axis | ≥32 | ≥32 | ≥29 | ≥34 | ≥28 | ≥39 | |
B axis | ≥8 | ≥8 | ≥6 | ≥8 | ≥8 | ≥10 | ||
chemical composition (%) | Al2O3 | 55 ~65 | 25 ~38 | 28 ~38 | 55 ~65 | 60~70 | 70 ~80 | |
SiO2 | 25~35 | 50 ~60 | 45 ~55 | 25 ~35 | 25 ~35 | 15 ~25 | ||
MgO | 1~3 | 5 ~10 | 11 ~14 | 3~5 | 0 ~1 | 0 ~2 | ||
others | <5 | <5 | <5 | <5 | <5 | <5 |