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Specialty Compounds RTP Company

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 PropertiesMetricEnglishComments
Density 0.768 - 0.897 g/cc0.0277 - 0.0324 lb/in³Fired at 1500°F
 0.849 - 1.04 g/cc0.0307 - 0.0376 lb/in³Dry
 
Mechanical PropertiesMetricEnglishComments
Modulus of Rupture 0.000345 - 0.000448 GPa0.0500 - 0.0650 ksiDried 18-24 hours at 220°F, cast; ASTM C133
 0.000331 - 0.000386 GPa
@Treatment Temp. 816 °C,
Time 18000 sec
0.0480 - 0.0560 ksi
@Treatment Temp. 1500 °F,
Time 5.00 hour
cast; ASTM C133
 0.000338 - 0.000379 GPa
@Treatment Temp. 1090 °C,
Time 18000 sec
0.0490 - 0.0550 ksi
@Treatment Temp. 2000 °F,
Time 5.00 hour
cast; ASTM C133
Compressive Strength 1.38 - 3.10 MPa200 - 450 psiFired 5 hours at 2000°F cast
 1.72 - 3.10 MPa249 - 450 psiDried for 18-24 hours at 220°F cast
 2.00 - 4.07 MPa290 - 590 psiFired 5 hours at 1500°F cast
 
Thermal PropertiesMetricEnglishComments
Thermal Conductivity  0.216 W/m-K
@Temperature 260 °C
1.50 BTU-in/hr-ft²-°F
@Temperature 500 °F
cast; ASTM C417
 0.238 W/m-K
@Temperature 538 °C
1.65 BTU-in/hr-ft²-°F
@Temperature 1000 °F
cast; ASTM C417
 0.259 W/m-K
@Temperature 816 °C
1.80 BTU-in/hr-ft²-°F
@Temperature 1500 °F
cast; ASTM C417
Maximum Service Temperature, Air 1090 °C2000 °F
Shrinkage 0.00 - 0.00 %0.00 - 0.00 %
 0.00 - 0.00 %0.00 - 0.00 %
 0.30 - 0.80 %
@Temperature 816 °C,
Time 18000 sec
0.30 - 0.80 %
@Temperature 1500 °F,
Time 5.00 hour
ASTM C113
 
Processing PropertiesMetricEnglishComments
Shelf Life 12.0 Month12.0 Month
 
Component Elements PropertiesMetricEnglishComments
Al2O3 28.3 %28.3 %
Alkalis 2.4 %2.4 %
CaO 18.4 %18.4 %
Fe2O3 6.7 %6.7 %
MgO 4.5 %4.5 %
SiO2 37.8 %37.8 %
TiO2 1.4 %1.4 %

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