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Cordierite Mullite Plate
Classification | C-Category | R-Category | E-Category | A-Category | T-Category | ||
CUA | CEN | REN | REC | EAY | AUK | TOB | |
Mineralogy | Cordierite mullite | ||||||
Al2O3 % | 40 | 41 | 36 | 39 | 41 | 43 | 46 |
SiO2 % | 49 | 48 | 52 | 49 | 47 | 46 | 44 |
MgO % | 6.5 | 7 | 7 | 8 | 7 | 7 | 6 |
Bulk Desity g/cm3 | 1.95 | 1.9 | 1.85 | 1.82 | 1.95 | 1.82 | 2 |
Apparent porosity % | 26 | 28 | 28 | 29 | 26 | 33 | 25 |
M.O.R.at 20℃ MPa | 14 | 13 | 16 | 10 | 13 | 15 | 18 |
M.O.R.at 250℃ MPa | 14 | 13 | 10 | 11 | 15 | 15 | 17 |
C.T.E.at 20℃-1000℃ 10-6K-1 | 2.3 | 2.3 | 2.6 | 2.2 | 2.2 | 2.5 | 3.1 |
Specificheat at 20℃ KJ/KG·K | 1 | 1 | 1 | 1 | 1 | 1 | 1.1 |
Max working temperature ℃ | 1300 | 1250 | 1300 | 1320 | 1280 | 1280 | 1350 |
Remark: | (1)M.O.R.=Modulus of rupture. (2)C.T.E.=Coefficient of thermal expansion |
Classification | C-Category | R-Category | E-Category | A-Category | T-Category |
Feature 1: | Low | Medium | Extremely low | Low | Higher |
Thermal expansion | |||||
Feature 2:Resistance | Strong | Stronger | Medium | Stronger | Very good |
to deformation | |||||
Feature 3: Thermal shock | Good | Good | Excellent | Good | Good |
resistance | |||||
Long time working | 1250℃ | 1280℃ | 1200℃ | 1220℃ | 1300℃ |
temperature up to | |||||
Suitable products |
Slab,batts, support pillar |
Not suitable for big size product (Above 1000mm) |
Suitable for thicker batts |
Complicated shape |
Not ideal for fast-firing processes |