Thermal Ceramics Kao-Tab HDHS-98 High Alumina Castables

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Thermal Ceramics Kao-Tab HDHS-98 High Alumina Castables
Categories:	Ceramic; Oxide; Aluminum Oxide
Material Notes:	Kao-Tab HDHS-98 is a very high purity, 98% alumina castable with high hot strengths. Excellent for hydrogen atmospheres needing high-purity or high temperature applications in the ion and steel, chemical processing, and cement industries. 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	Metric	English	Comments

Density	2.821 - 3.013 g/cc	0.1019 - 0.1089 lb/in³	Fired

Mechanical Properties	Metric	English	Comments
Modulus of Rupture	0.00483 - 0.00827 GPa	0.700 - 1.20 ksi	Dried 18-24 hours at 220°F; ASTM C133
	0.00345 - 0.00552 GPa @Treatment Temp. 816 °C, Time 18000 sec	0.500 - 0.800 ksi @Treatment Temp. 1500 °F, Time 5.00 hour	ASTM C133
	0.00689 - 0.00965 GPa @Treatment Temp. 1870 °C, Time 18000 sec	1.00 - 1.40 ksi @Treatment Temp. 3400 °F, Time 5.00 hour	ASTM C133
Compressive Strength	24.1 - 41.4 MPa	3500 - 6000 psi	Fired 5 hours at 1500°F; ASTM C133
	32.4 - 45.0 MPa	4700 - 6530 psi	Dried for 18-24 hours at 220°F
	41.4 - 59.0 MPa	6000 - 8560 psi	Fired 5 hours at 3400°F
Abrasion	7.0 - 11	7.0 - 11	loss, cc`s; Fired 5 hours at 1500°F; ASTM C704

Thermal Properties	Metric	English	Comments
Thermal Conductivity	1.89 W/m-K @Temperature 1090 °C	13.1 BTU-in/hr-ft²-°F @Temperature 2000 °F	ASTM C417
	2.19 W/m-K @Temperature 816 °C	15.2 BTU-in/hr-ft²-°F @Temperature 1500 °F	ASTM C417
	2.51 W/m-K @Temperature 538 °C	17.4 BTU-in/hr-ft²-°F @Temperature 1000 °F	ASTM C417
	3.08 W/m-K @Temperature 260 °C	21.4 BTU-in/hr-ft²-°F @Temperature 500 °F	ASTM C417
Maximum Service Temperature, Air	1870 °C	3400 °F
Shrinkage	0.00 - 0.40 % @Temperature 816 °C, Time 18000 sec	0.00 - 0.40 % @Temperature 1500 °F, Time 5.00 hour	ASTM C113
	0.20 - 0.70 % @Temperature 1870 °C, Time 18000 sec	0.20 - 0.70 % @Temperature 3400 °F, Time 5.00 hour	ASTM C113
	0.00 - 0.20 % @Treatment Temp. 104 °C	0.00 - 0.20 % @Treatment Temp. 220 °F	Dried 18-24 hours; ASTM C113

Processing Properties	Metric	English	Comments
Shelf Life	12.0 Month	12.0 Month

Component Elements Properties	Metric	English	Comments
Al2O3	98 %	98 %
Alkalis	0.10 %	0.10 %
CaO	1.8 %	1.8 %
SiO2	0.10 %	0.10 %

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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