Main Data

See also

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

 


62

1,1

 


69

1,0

 


75

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.