Mullite spalling-resistant and mullite-corundum refractories
Mullite spalling-resistant and mullite-corundum refractories
Technical characteristics
Rate for grade | |||
---|---|---|---|
MLUT-62 | MLUT-69 | MKB-75 |
|
Spec. 14-194-277-07 rev.1 | Spec. 14-8-633-95 rev.1,2 | ||
Mass fraction (of baked substance), %:
Al2O3, minimum Fe2O3, maximum |
1,1 |
1,0 |
2,2 |
Compressive strength, N/mm2, minimum | 50 | 50 | 40 |
Open porosity, % maximum | 17 | 19 | 23 |
Residual variation of dimensions when heating, %, maximum at: 1500 °C 1600 °C |
0,6 - |
0,6 - |
- 2,5* |
Temperature of initial softening, °С, minimum | 1600 | 1650 | 1420* |
Thermal shock resistance, 1300°C - water, minimum | 25 | 30 | 3* |
*Upon agreement between the consumer and the manufacturer.