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Thermal Ceramics Kaolite 1:2:4 Super Lightweight Insulating Castables
Categories: Ceramic; Oxide

Material Notes: Super lightweight Kaolite castables reduce both the quantity of heat storage and heat transfer through the lining producing significant savings in furnace fuel consumption. The lower densities of these vermiculite based Kaolite castables reduce the amount of supporting furnace steel work required and provide more insulation with a thinner lining. These products can be cast, poured, or gunited.

Kaolite 1:2:4 is a general-purpose, lightweight castable for use up to 2000°F (1093°C). It maintains excellent volume stability throughout its temperature use range. This is an excellent advantage for applications where strength and low thermal conductivity are required.

Information provided by Thermal Ceramics

Data has not been recently verified. Please contact manufacturer for current information.

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Physical PropertiesOriginal ValueComments
Density 0.768 - 0.897 g/ccFired at 1500°F
 0.849 - 1.04 g/ccDry
 
Mechanical PropertiesOriginal ValueComments
Modulus of Rupture 0.0500 - 0.0650 ksiDried 18-24 hours at 220°F, cast; ASTM C133
 0.0480 - 0.0560 ksi
@Treatment Temp. 816 °C,
Time 18000 sec
cast; ASTM C133
 0.0490 - 0.0550 ksi
@Treatment Temp. 1090 °C,
Time 18000 sec
cast; ASTM C133
Compressive Strength 1.38 - 3.10 MPaFired 5 hours at 2000°F cast
 1.72 - 3.10 MPaDried for 18-24 hours at 220°F cast
 2.00 - 4.07 MPaFired 5 hours at 1500°F cast
 
Thermal PropertiesOriginal ValueComments
Thermal Conductivity 1.50 BTU-in/hr-ft²-°F
@Temperature 260 °C
cast; ASTM C417
 1.65 BTU-in/hr-ft²-°F
@Temperature 538 °C
cast; ASTM C417
 1.80 BTU-in/hr-ft²-°F
@Temperature 816 °C
cast; ASTM C417
Maximum Service Temperature, Air 2000 °F
Shrinkage 0.00 - 0.00 %
 0.00 - 0.00 %
 0.30 - 0.80 %
@Temperature 816 °C,
Time 18000 sec
ASTM C113
 
Processing PropertiesOriginal ValueComments
Shelf Life 12.0 Month
 
Component Elements PropertiesOriginal ValueComments
Al2O3 28.3 %
Alkalis 2.4 %
CaO 18.4 %
Fe2O3 6.7 %
MgO 4.5 %
SiO2 37.8 %
TiO2 1.4 %

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