Magnesia FireBricks
Characteristics

  • Excellent resistance to basic slag
  • High mechanical strength
  • Good thermal shock resistance and spalling resistance
  • High temperature resistance  
Specification of Typical Magnesia FireBricks
Magnesia FireBricks
Magnesia FireBricks
Tucson, Arizona, USA
Skyline Components, LLC
Code
M56
M92
M95
M97
M98
MZ78
MC
RMC
Type
Insulating
High magnesia
Magnesia-
zirconia
Magnesia-
Chrome
Re-bonded
Magnesia-Chrome
Refractoriness under Loading
2460 °F
1350 °C
2780 °F
1530 °C
3000 °F
1650 °C
3090 °F
1700 °C
3090 °F
1700 °C
3090 °F
1700 °C
3090 °F
1700 °C
3180 °F
1750 °C
Density
106 lb/ft^3
1.7 g/cm^3
181 lb/ft^3
2.9 g/cm^3
187 lb/ft^3
3.0 g/cm^3
187 lb/ft^3
3.0 g/cm^3
187 lb/ft^3
3.0 g/cm^3
194 lb/ft^3
3.1 g/cm^3
187 lb/ft^3
3.0 g/cm^3
 
Cold Crushing Strength (MPa)
≥ 6
≥ 60
≥ 70
≥ 70
≥ 60
≥ 100
45
45
Porosity (%)
 
≤ 16
≤ 16
≤ 16
≤ 15
≤ 15
18
16
Chemical Composition
MgO
56%
82%
95%
97%
98%
78%
75-80%
60-65%
SiO2
30%
 
 
 
 
12.5%
 
 
ZrO2
 
 
 
 
 
8
 
 
Cr2O3
 
 
 
 
 
 
8%
16-20%