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PBN Crucibles for Precision Application

Pyrolytic Boron Nitride Crucible can withstand high temperatures in a high vacuum environment. It has excellent thermal conductivity, corrosion resistance, and electrical resistance.

AC3491 Bubble Alumina Bricks

Catalog No. AC3491
Material Al2O3
Purity 98.8%
Size Customized

Datasheet

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AC3491 Bubble Alumina Bricks

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Bubble Alumina Bricks Description

Alumina Bubble Brick contains more than 90% Al2O3 and is a lightweight refractory product mainly composed of corundum. Al2O3 and the appropriate amount of clay and bonding agent are used as raw materials, and gas-blowing agents are used in the preparation stage. The product has good high-temperature structural properties and can be used in industrial kilns at 1600~1800°C.

Bubble Alumina Bricks Specifications

Properties		SPEC	TYPICAL
Classification temperature (°C)		1800°C/3270°F
Bulk Density (g/cm3)		1.65 Max	1.55
Cold Crushing Strength (kg/cm2)		100 Min	150
Thermal Conductivity (W/mK) at 350°C		-	0.9
Reheat shrinkage (1,700°C*8 hours, %)		-	0.06
Chemical Composition (%)	Al2O3	98.0 Min	99.2
	SiO2	-	0.3
	Fe2O3	0.5 Max	0.2

Bubble Alumina Bricks Applications

Used as the main refractory lining for hot surfaces or as an insulation material behind other refractories in furnaces, flues, kilns, and similar high-temperature industrial equipment.

Packaging

Our Bubble Alumina Bricks are carefully handled during storage and transportation to preserve the quality of our product in its original condition.