Thermal Ceramics Kaocrete HPM 90 Ultra High Strength Castables

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Thermal Ceramics Kaocrete HPM 90 Ultra High Strength Castables
Categories:	Ceramic; Oxide; Aluminum Oxide
Material Notes:	Kaocrete HPM 90 is a 93%-alumina product designed for extremely rugged applications requiring hot strength and excellent load bearing characteristics. At 190 pcf density, Kaocrete HPM 90 is comparable to pressed high-alumina brick, with actual hot strengths at intermediate temperatures superior to a 90%-alumina brick. Features: Provide 2 to 3 times greater strengths than standard castables with similar densities Superb resistance to abrasion or mechanical impact Excellent thermal shock resistance Resistant to slag or metal contact Stronger bond formed when heated Porosity rivals that of dense firebrick All water used in casting is removed once monolithic reaches 350°F (177°C) 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	2.901 - 3.061 g/cc	Fired
Deformation	0.60 %	load-25 psi, 1.5 hours at 2640°F; ASTM C16

Mechanical Properties	Original Value	Comments
Modulus of Rupture	1.60 - 2.40 ksi	Dried 18-24 hours at 220°F; ASTM C133
	1.60 - 2.40 ksi @Treatment Temp. 816 °C, Time 18000 sec	ASTM C133
Compressive Strength	69.0 - 90.0 MPa	Dried for 18-24 hours at 220°F
	79.0 - 103 MPa	Fired 5 hours at 1500°F; ASTM C133
	97.0 - 124 MPa	Fired 5 hours at 3400°F
Abrasion	5.0 - 8.0	loss, cc`s; Fired 5 hours at 1500°F; ASTM C704

Thermal Properties	Original Value	Comments
Thermal Conductivity	18.5 BTU-in/hr-ft²-°F @Temperature 1090 °C	ASTM C417
	20.0 BTU-in/hr-ft²-°F @Temperature 816 °C	ASTM C417
	23.0 BTU-in/hr-ft²-°F @Temperature 538 °C	ASTM C417
	28.3 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
	0.50 - 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	93 %
Alkalis	0.40 %
CaO	1.5 %
Fe2O3	0.10 %
SiO2	5.0 %

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