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Elmet Technologies

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Skamol Group SICAL 78 Silicon Nitride-Bonded Silicon Carbide Brick
Categories: Ceramic; Carbide

Material Notes: Silicon nitride-bonded silicon carbide brick has the following characteristics:
  • Max. service temperature 1580°C (2876°F)
  • For sidewall lining of aluminum reduction cells
  • High thermal conductivity
  • Low porosity
  • Low thermal expansion
  • Low gas permeability
  • Outstanding abrasion and erosion resistance
  • High modulus of rupture
  • Superior resistance to metal penetration and attack
  • Extremely high crushing strength
  • Excellent oxidation resistance and resistance to corrosion

Information provided by Skamol.

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Physical PropertiesOriginal ValueComments
Bulk Density 165 lb/ft³EN 993-1 1995
Porosity 17 %Apparent; EN 993-1 1995
Permeability <= 0.050nPm, Permeability to gases; EN 993-4 1995
 
Mechanical PropertiesOriginal ValueComments
Modulus of Rupture 0.0440 GPaEN 993-6: 1995
Compressive Strength 160 MPaEN 993-5 1998
 
Thermal PropertiesOriginal ValueComments
CTE, linear 4.30 µm/m-°C
@Temperature 20.0 - 1000 °C
ASTM C-372
Thermal Conductivity 21.0 W/m-K
@Temperature 700 °C
Hot strip, Mean temp.; SINTEF
 28.0 W/m-K
@Temperature 500 °C
Hot strip, Mean temp.; SINTEF
 38.0 W/m-K
@Temperature 200 °C
Hot strip, Mean temp.; SINTEF
Maximum Service Temperature, Air 1580 °C
 
Component Elements PropertiesOriginal ValueComments
Al2O3 + Fe2O3 + CaO 0.50 %
Si3N4 18 %
SiC 78 %
Silicon, Si 0.50 %
SiO2 + Si2ON2 2.0 %
 
Descriptive Properties
ColorGrey
Corrosion Resistance 3SINTEF
Dimensional Tolerances (Length/Width/Thickness)±2.0/±2.0/±1.0 mm
Standard Sizes510x300x50mm, 500x300x100mm, or 230x114x64mmOther sizes made on request

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