Thermal Ceramics Kao-Tab 95 Gun High Alumina Castables

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Thermal Ceramics Kao-Tab 95 Gun High Alumina Castables
Categories:	Ceramic; Oxide; Aluminum Oxide
Material Notes:	Kao-Tab 95 Gun is a 95%-alumina castable designed for gunning. It maintains high strength throughout the temperature range of 3400°F (1871°C). Key features are high strength, high-use limit, good slag resistance, and high purity. Features: Designed for supercritical applications Specially enhanced high alumina chemistries that allow Kao-Tab to outperform conventional castables Applications: Cat cracker transfer lines where more abrasion resistance is needed Secondary ammonia reformer linings where low silica is desired Recovery boiler Upper furnace walls Recovery/cyclone boilers Lower furnace walls and floor Cyclone boilers Information provided by Thermal Ceramics Data has not been recently verified. Please contact manufacturer for current information.
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Physical Properties	Original Value	Comments

Density	2.628 - 2.804 g/cc	Fired

Mechanical Properties	Original Value	Comments
Modulus of Rupture	1.40 - 1.90 ksi	Dried 18-24 hours at 220°F; ASTM C133
	1.10 - 1.80 ksi @Treatment Temp. 816 °C, Time 18000 sec	ASTM C133
	1.40 - 2.00 ksi @Treatment Temp. 1870 °C, Time 18000 sec	ASTM C133
Compressive Strength	34.0 - 52.0 MPa	Dried for 18-24 hours at 220°F
	34.0 - 62.0 MPa	Fired 5 hours at 1500°F; ASTM C133
	41.0 - 62.0 MPa	Fired 5 hours at 3400°F
Abrasion	13 - 20	loss, cc`s; Fired 5 hours at 1500°F; ASTM C704

Thermal Properties	Original Value	Comments
Thermal Conductivity	11.2 BTU-in/hr-ft²-°F @Temperature 1370 °C	ASTM C417
	12.1 BTU-in/hr-ft²-°F @Temperature 1090 °C	ASTM C417
	13.3 BTU-in/hr-ft²-°F @Temperature 816 °C	ASTM C417
	15.3 BTU-in/hr-ft²-°F @Temperature 538 °C	ASTM C417
	18.1 BTU-in/hr-ft²-°F @Temperature 260 °C	ASTM C417
Maximum Service Temperature, Air	3400 °F
Shrinkage	0.10 - 0.30 % @Temperature 816 °C, Time 18000 sec	ASTM C113
	0.00 - 1.5 % @Temperature 1870 °C, Time 18000 sec	ASTM C113
	0.00 - 0.20 % @Treatment Temp. 104 °C	Dried 18-24 hours; ASTM C113

Processing Properties	Original Value	Comments
Shelf Life	12.0 Month

Component Elements Properties	Original Value	Comments
Al2O3	95 %
Alkalis	0.10 %
CaO	4.2 %
Fe2O3	0.20 %
SiO2	0.20 %

Descriptive Properties
MgO Content	traces
TiO2 content	traces

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