Low porosity fireclay brick

DN11

DN14

DN17

Al2O3 ≥

%

47

45

42

Fe2O3 ≤

%

1.2

1.5

1.8

Apparent porosity ≤ 

%

11

14

17

Bulk density ≥

g/cm3

2.40

2.34

2.26

Cold crushing strength ≥

Mpa

80

65

50

Refractoriness under load ≥

℃

1520

1470

1430

Permanent linear change

%

1500℃×2h +0.1 ͠ -0.2

1400℃×2h +0.1 ͠ -0.2

1400℃×2h +0.1 ͠ -0.2