Corundum FireBricks
Skyline Components can supply three kinds of corundum bricks: High-purity
corundum bricks that contain 90 - 99% of alumina, chromium- or chrome-
corundum bricks and zirconium- or zirconia-corundum bricks. All these
bricks can be manufactured to meet the requirements of customers.

Characteristics

  • Excellent thermal stability and high temperature strength
  • High thermal shock resistance
  • Excellent corrosion resistance
  • High Purity
Specification of Typical Corundum Bricks
Corundum Firebricks
Code
RFB-A90
RFB-A95
RFB-A99
CAB Series
ZAB Series
Type
High-Purity corundum
Chromium
-Corundum
Zirconium
-Corundum
Maximum Service
Temperature
3090 °F
1700 °C
3200 °F
1760 °C
3270 °F
1800 °C
 
 
Refractoriness under loading
 
 
 
≥ 3090 °F
≥ 1700 °C
≥ 3090 °F
≥ 1700 °C
Density
187 lb/ft^3
3.0 g/cm^3
194 lb/ft^3
3.1 g/cm^3
200 lb/ft^3
3.2 g/cm^3
≥ 205 lb/ft^3
≥ 3.3g/cm^3
≥ 230 lb/ft^3
≥ 3.7 g/cm^3
Cold Crushing Strength (MPa)
≥ 80
≥ 80
≥ 100
≥ 120
≥ 200
Porosity (%)
20
20
18
10 - 18
≤ 2
Reheating Linear Change (%)
±0.3%
(at 1600°C
for 3
hours)
±0.3%
(at 1600°C
for 3
hours)
±0.2%
(at 1600°C
for 3 hours)
±0.2%
(at 1600°C
for 3 hours)
 
Chemical
Composition
Al2O3
≥ 90%
≥ 95%
≥ 99%
35 - 80
40 - 55
ZrO2
 
 
 
 
30 - 45
Cr2O3
 
 
 
10 - 65
 
Fe2O3
≤ 0.3%
≤ 0.3%
≤ 0.15%
 
 
SiO2
 
 
≤ 0.2%
 
10 - 18
Tucson, Arizona, USA
Skyline Components, LLC