Ceramics

Duraboard HD is a ridgid, high temperature board made from bulk ceramic fibers and organic bonding agents.

Application – Ideal for use in thermal areas experiencing vibration and mechanical stress. For gaskets and seals, high temperature baffles and muffles, flue and chimney linings in furnaces and kilns, infrared element support, pouring formns for castables, expansion joints.

Characteristics – Made from Alumina, silica and organic binders. 
Low thermal conductivity, high temperature stability and excellent resistance to thermal shock and chemical attack. Easily sawed, drilled and machinable.

Sheet Size – 305 and 914mm wide; 914 and 1120mm long

Density – 433-497 kg/m3

Operating temperature – 1260°C (Melting point 1760°C)

Manufacturer – Unifrax

Duraboard LD possesses the same density and temperature rating as Duraboard RG but is manufactured to a higher dimensional tolerance and has an excellent finished surface.

Application – Insulating backup to dense refractories, brick and castables, furnace hot face linings in ceramic kilns, box furnaces and petrochemical furnaces. 
Rigid high-temperature gaskets and seals.

Characteristics – Ideal as a sandwich or core material or for use in the manufacture of components where aesthetics, quality as well as uniformity and performance is important.

Sheet Size – 1/8” th. 42×48”; 1/4 & 1/2”th. 24×36,24×48,42,48; 1”th. 24×36, 24×48

Density – 16 lb/ft3; 258 kg/m3

Operating temperature – 2300°F; 1260°C

Compressive Strength – (Green) 42lb/in2 @ 5% deformation

Dielectric strength – 27 volts/mill

Manufacturer – Unifrax

Duraboard 2600 is a high-temperature insulating board designed to provide high stability at elevated temperatures.

Application – Full thickness refractory linings, insulating back-up to dense refractories, brick and castables. Use in ceramic kiln, box furnace and petrochemical furnace. Industrial combustion chamber construction.

Characteristics – Formulated with a blend of Fiberfrax(R) alumina-silica fibers and Fibermax(R), Unifrax’s patented polycrystalline mullite fibers. Controls shrinkage to <1.0% after 168 hours @ 2450°F/1343°C.

Sheet Size – 18×18, 24×24 and 24×48 in 1,1-1/2 and 2” th.

Density – 14 lb/ft3; 224 kg/m3

Operating temperature – 2600°F; 1427°C

Compressive Strength – (Green) 22lb/in2 @ 5% deformation

Dielectric strength – 27 volts / mil

Manufacturer – Unifrax

Duraboard 3000 is the highest temperature rated board made by Unifrax. 

Application – Full thickness refractory linings, thermal insulation where high velocities are encountered. Industrial combustion chamber construction.

Characteristics – Provides maximum high-temperature stability and shrinkage resistance. Controls shrinkage to 1.2% after 168 hours @ 2700°F/1482°C.

Sheet Size – 18×18, 24×24 and 24×48 in 1,1-1/2 and 2” th.

Density – 14 lb/ft3; 224 kg/m3

Operating temperature – 3000°F; 1649°C

Compressive Strength – (Green) 42lb/in2 @ 5% deformation

Dielectric strength – 27 volts /mil

Manufacturer – Unifrax

Fiberfrax® Durablanket S is a strong, lightweight and flexible needled ceramic fiber insulation for a broad spectrum of application problems.

Application – Furnace, kiln, reformer and boiler rings, investment casting mold wrappings, furnace door linings and seals, high temperature gasketing.

Characteristics – Excellent handling and hot strength, low thermal conductivity, low heat storage, thermal shock resistance, excellent thermal stability, sound absorption and fire protection.

Roll size – 1/4 to 2” thicknesses. 24” – 48” wide.

Operating Temperature – 2300°F

Manufacturer – Unifrax

Fiberfrax® Paper is a chemically stable ceramic fiber insulating paper in utility, standard and premium grades.

Application – Refractory back-up, fire protection, thermal insulation, hot gas filtration media, molten metal and spark protection, high temperature gasket, separator or parting agent.

Characteristics – Uniform, lightweight and flexible. Alumino-silicate fibers in a nonwoven matrix.

440 Paper – Utility grade

110,550,970 paper – Standard grade

880, HAS paper – Premium grade

Roll size – Contact us for thickness and roll length information

Manufacturer – Unifrax

RS-100 is a ceramic fiber reinforced structural alumina composite board.

Application – Induction melting, forging and heat treating, investment casting, glass processing, hot pressing and high-temperature applications.

Sheet Size – 24×48 in 1/8, 3/16, 1/4, 3/8, 1/2, 3/4, 1, 1-1/2 and 2” th.

Density – 130 pcf

Operating temperature – 2300°F

Compressive Strength – 10,000 psi (2% compression)

Thermal conductivity – 4.4 (392°F)

Arc Resistance – 420 seconds

Manufacturer – ZIRCAR Refractory Composites, Inc.