High Alumina Brick HA-60-70-75-80

High Alumina Brick  HA-60

 

Item

Standard

Al2O3(%)

60

SIO2(%)

32

Fe2O3(%)

1.7

Na2O+K2O(%)

2.3

Refractoriness

1790

refractoriness under load 0.2mpa()

1450

Porosity(%)

22

Bulk density(g/cm3)

2.33

Cold cushing strength (mpa)

50

Thermal expansion at 1000(%)

0.3

Reheating shrinkingchange(%) 1500X24h

-0.3

High Alumina Brick 75%

Specification:

 

Brand

FR75

Al2O3(%)

≥75

Fe2o3(%)

≤2.0

Refractoriness

1770

refractoriness under load 0.2mpa()

1520

Porosity(%)

22

Bulk density(g/cm3)

≥2.7

Cold cushing strength (mpa)

≥60

Thermal expansion at 1000(%)

≤0.5

High Alumina Brick 85%

Specification:

 

Brand

FR85

Al2O3(%)

≥85

Fe2o3(%)

≤1.8

Refractoriness

1830

refractoriness under load 0.2mpa()

1550

Porosity(%)

22

Bulk density(g/cm3)

≥2.8

Cold cushing strength (mpa)

≥70

Thermal expansion at 1000(%)

≤0.5