Skamol Group Moler BB-BLOCK Insulating Block

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Skamol Group Moler BB-BLOCK Insulating Block
Categories:	Ceramic; Oxide; Silicon Oxide
Material Notes:	SKAMOL Moler insulating bricks & blocks have the following characteristics: Max. service temperature: Up to 1000°C (1832°F) Back-up insulation Excellent insulating properties High mechanical strength Light weight Good thermal shock resistance Increasing strength at rising temperatures High content of amorphous silica accounting for an increased viscosity being induced into attacking slags or melts Non-wetting to molten aluminum and other metals A wide range of bricks and blocks in various combinations of bulk density, thermal conductivity and crushing strength Primarily used for back-up insulation, typically in industrial furnaces behind a refractory lining. Information provided by Skamol.
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Physical Properties	Original Value	Comments

Bulk Density	41.0 lb/ft³	Dry
Loss On Ignition	1.0 % @Temperature 1025 °C
Porosity	72 %	Total
Permeability	8.0	nPm, Permeability to Air; BS EN 993-4: 1995

Mechanical Properties	Original Value	Comments
Compressive Strength	2.50 MPa	EN 1094-5: 1995

Thermal Properties	Original Value	Comments
CTE, linear	2.00 µm/m-°C @Temperature 20.0 - 750 °C	BS 1902: section 5.3: 1990
Specific Heat Capacity	0.800 J/g-°C
Thermal Conductivity	0.130 W/m-K @Temperature 200 °C	Mean temp.; ASTM C-182
	0.150 W/m-K @Temperature 400 °C	ASTM C-182
	0.170 W/m-K @Temperature 600 °C	ASTM C-182
Maximum Service Temperature, Air	900 °C
Shrinkage	1.0 % @Temperature 1000 °C, Time 43200 sec	Linear Reheat Shrinkage; EN 1094-6: 1999

Component Elements Properties	Original Value	Comments
Al2O3	9.0 %
CaO	0.80 %
Fe2O3	7.0 %
K2O	1.6 %
MgO	1.3 %
Na2O	0.40 %
SiO2	77 %
SO3	1.0 %
TiO2	0.70 %

Descriptive Properties
Color	Red
Creep in Compression	0%	BS EN 993-9: 1997, after fluoride gas exposure, 50h at 800°C (1472°F), load 0.1 MPa (14.5 psi)
Pyrometric Cone Equivalent	1350°C	ASTM C24-89, ORTON cones
Resistance to Thermal Shock	Min 30 cycles	EN 993-11: 1998, heating to 950°C (1742°F)

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