|
Item
|
High corundum brick
|
Wearable corundum brick
|
Mullite corundum brick
|
Wearable corundum brick
|
|
Bulk density/cm3
|
3.0
|
2.9
|
2.9
|
2.7
|
|
Compression strength(under normal temperature) kg/cm2
|
≥400
|
≥600
|
≥250
|
≥200
|
|
Reheating linear shrinkage %
|
1650Cx3 hours≤0.5
|
1650Cx3 hours≤0.5
|
1600Cx3 hours≤0.5
|
1500Cx3 hours≤0.5
|
|
Al2o3 content %
|
≥ 95
|
≥ 93
|
≥ 85
|
≥ 93
|
|
Fe2o3 content %
|
≤0.5
|
≤0.5
|
≤0.5
|
≤0.5
|
|
The max working temperature
|
1750C(SK32)
|
1750C(SK32)
|
1750C(SK32)
|
1600C(SK24)
|
Bulk density/cm3: 2.9
Compression strength kg/cm2: >250
Reheating linear shrinkage %: 1650Cx3 hours≤0.5
Al2o3 content %:≥85
Fe2o3 content %:≤0.5