Item     

                       Index

 Unit

High temperature composite  brick

Refractoriness under load  0.2 Mpa

°C

>1700

Bulk Density

g/cm3

≥3.5

Apparent Porosity

%

<20

Compressive strength 

Mpa

≥120

Rate of Reheating linear change (1500°C*3h)

%

±0.2

Chemical Composition

Al2O3

%

≥40

SiO2

%

≤0.2

Cr2O3

%

≥50

Fe2O3

%

≤0.1