NK.AL.70

 

 

Type of Product: High Alumina Brick

 

 

Physical Properties:

Refractoriness (˚C)

1700

Bulk Density (Kg/m3)

≥ 2350

Porosity (%)

≤  24

Cold Crushing Strength (Kg/Cm2)

≥ 360

Modulus of Rupture  (Kg/Cm2)

≥ 70

 

 

Thermomechanical Properties:

Linear Change After heating at 1600° C ( % )

+1.1 to +1.7

Refractoriness Under load (°C)          

 > 1425

Reversible Liner Thermal Expansion at 1400°C ( % )

Max 0.8

 

 

Chemical Analysis (%):

Al2O3

SiO2

Fe2O3

TiO2

Na2O+K2O+LiO2

68 – 72

21 – 23

1.7 – 1.9

3.0 – 3.3

1.0 – 1.2

 

 

 

–  The above data are typical of the properties of commercial standard brick.

–  The data are subject to reasonable variations and therefore should not be used for specification purposes.

–  ASTM Test Methods, where applicable, used for determination of data.