Ceramic Fiber
Ceramic Fiber Board Alternative
Cost-effective insulation board from rare earth cotton for medium-temperature applications up to 600℃.
Ceramic Fiber
Refractory Ceramic Fiber Board for High Temperature Insulation
Refractory ceramic fiber board for high temperature insulation up to 1430C. Rigid, easy to cut, multiple densities and grades. Factory direct pricing.
- Density
- 260-320 kg/m3
- Thickness
- 10-50mm
- Size
- 1200x1000mm / 1000x600mm
- Compressive Strength
- 0.5 MPa
Overview
- ✦ Excellent thermal stability
- ✦ Low thermal conductivity
- ✦ Good sound insulation
- ✦ Low shrinkage
Refractory Ceramic Fiber Board for High Temperature Insulation Also referred to as ceramic fiber insulation board or simply ceramic insulation board, this rigid refractory product is the industry standard for high temperature furnace and kiln lining.
Our refractory ceramic fiber board is a rigid high temperature insulation board engineered for continuous service up to 1430C. Vacuum-formed from high-purity alumina-silicate ceramic fiber bulk, it delivers the structural rigidity that blanket or paper cannot provide, making it the preferred refractory ceramic fiber board for furnace linings, kiln hot-face insulation, and high temperature process equipment.
Why Choose This High Temperature Ceramic Fiber Board
- High temperature rating up to 1430C - six grades (COM/ST/HP/HA/Zir-Alu/HZ) cover every operating range from 1100C economy to 1430C zirconia-stabilised service.
- Rigid and machinable - cuts cleanly with a handsaw or knife, holds shape under compression, ideal for custom refractory linings and baffle boards.
- Low thermal conductivity - 0.12-0.18 W/(m.K) at 800C, outperforms calcium silicate and insulating firebrick at equivalent density.
- Low shrinkage and excellent thermal stability - maintains dimensional integrity through thermal cycling, critical for high temperature ceramic fiber board used as furnace hot-face.
- 100% asbestos-free - classified non-carcinogenic under EU Directive 97/69/EC, safe to handle with standard PPE.
High Temperature Ceramic Fiber Board Applications
This refractory ceramic fiber board is widely used as:
- Hot-face and backup insulation in industrial furnaces and kilns
- High temperature furnace lining for heat treatment equipment
- Petrochemical heater and cracker lining
- LNG and liquid nitrogen cold-box insulation
- Refractory baffle, burner block, and combustion chamber lining
- Expansion joint and door seal in high temperature ducting
Material Composition
Made from high-purity alumina-silicate ceramic fiber bulk, vacuum-formed into rigid sheets. Six standard grades are available depending on alumina (Al2O3) content and zirconia stabilisation: COM (44% Al2O3, 1100C), ST (46% Al2O3, 1260C), HP (47-49% Al2O3, 1260C), HA (52-55% Al2O3, 1360C), Zir-Alu (45-46% Al2O3 + 5-7% ZrO2, 1200C), and HZ (39-40% Al2O3 + 15-17% ZrO2, 1430C).
For a comparison of grades and help selecting the right refractory ceramic fiber board for your application, see the specification table below or contact our technical team.
Part of the Ceramic Fiber product family.
Key features
- ✓ Excellent thermal stability
- ✓ Low thermal conductivity
- ✓ Good sound insulation
- ✓ Low shrinkage
- ✓ Good fiber resilience
- ✓ Easy installation
Typical applications
- Kiln lining insulation
- LNG and liquid nitrogen storage tanks
- Heat treatment equipment lining
- Refractory lining for industrial furnaces
- High temperature furnace backup insulation
- Petrochemical heater and cracker lining
Technical specs
- Density
- 260-320 kg/m3
- Thickness
- 10-50mm
- Size
- 1200x1000mm / 1000x600mm
- Compressive Strength
- 0.5 MPa
- Asbestos
- 100% Non-Asbestos
- Temperature Rating
- 1100-1430C
- Thermal Conductivity
- 0.12-0.18 W/(m.K) @800C
- Al2O3 Content
- 44-55%
Specifications
| Parameter | COM | ST | HP | HA | Zir-Alu | HZ |
|---|---|---|---|---|---|---|
| Class. Temp. | 1100℃ | 1260℃ | 1260℃ | 1360℃ | 1400℃ | 1430℃ |
| Working Temp. | <1000℃ | 1050℃ | 1100℃ | 1200℃ | 1200℃ | 1350℃ |
| Al₂O₃ (%) | 44 | 46 | 47-49 | 52-55 | 45-46 | 39-40 |
| Al₂O₃+SiO₂ (%) | 96 | 97 | 99 | 99 | - | - |
| ZrO₂ (%) | - | - | - | - | 5-7 | 15-17 |
Which grade should I choose?
Different grades are designed for different operating temperatures and environments. Use the comparison below to select the right grade for your application.
COM
<1000℃Al₂O₃: 44%
Economy applications, low-budget thermal insulation, building fire protection
Best for cost-effective medium-temperature applications
ST
1050℃Al₂O₃: 46%
Standard industrial furnaces, boilers, backup insulation
Best for general industrial furnace insulation
HP
1100℃Al₂O₃: 47-49%
Standard industrial furnaces, boilers, backup insulation
Best for high-temperature continuous operation
HA
1200℃Al₂O₃: 52-55%
High-temperature industrial furnaces, petrochemical crackers, continuous casting
Best for high-temperature continuous operation
Zir-Alu
1200℃Al₂O₃: 45-46%
High-temperature industrial furnaces, petrochemical crackers, continuous casting
Best for high-temperature continuous operation
HZ
1350℃Al₂O₃: 39-40%
Ultra-high temperature furnaces, glass kilns, ceramic firing
Best for industries requiring maximum thermal stability
Last updated: August 13, 2026
Frequently asked
What temperature can ceramic fiber insulation withstand? +
Ceramic fiber insulation withstands temperatures from 1100C to 1430C, depending on the grade. Standard (ST) and High-purity (HP) grades are rated for 1260C, while High-Alumina (HA) handles 1360C and Zirconia (HZ) reaches 1430C. Always match the grade to your specific operating temperature.
What are the differences between COM, ST, HP, HA, and HZ grades? +
The grades differ mainly in alumina (Al2O3) content and temperature rating. COM (1100C) is the economy grade. ST (1260C) is the standard industrial grade. HP (1260C) offers higher purity with lower shot content. HA (1360C) has higher alumina for superior thermal stability. HZ (1430C) contains zirconia for the highest temperature resistance.
Is ceramic fiber insulation safe? +
Yes. Our ceramic fiber products are 100% asbestos-free and manufactured to international safety standards. They are classified as non-carcinogenic under EU Directive 97/69/EC. We recommend standard PPE (gloves, dust mask) during handling, as with any fibrous insulation material.
How is ceramic fiber blanket installed? +
Ceramic fiber blanket can be cut to size with a utility knife and secured using high-temperature anchors, pins, or stud welding. For furnace linings, a layered installation is recommended. For pipe insulation, wrap and secure with stainless steel bands. Full installation guidance and technical support are provided with every order.
What are the typical applications for ceramic fiber products? +
Ceramic fiber is widely used in industrial furnaces, kilns, boilers, petrochemical heaters, power generation equipment, incinerators, and building fire protection systems. It is ideal for backup insulation, expansion joints, door seals, and high-temperature gaskets.
What is refractory ceramic fiber board? +
Refractory ceramic fiber board is a rigid high temperature insulation board made from alumina-silicate ceramic fiber bulk, vacuum-formed into dense sheets rated for continuous service up to 1430C. It combines low thermal conductivity with structural rigidity, making it ideal for refractory linings in furnaces, kilns, and high temperature process equipment where board-form insulation is required.
What is the high temperature rating of ceramic fiber board? +
Our refractory ceramic fiber board is rated for continuous operating temperatures from 1100C (COM grade) up to 1430C (HZ zirconia grade). The standard 1260C grade (ST/HP) covers most industrial furnace applications, while HA (1360C) and HZ (1430C) grades serve high temperature process equipment such as steel reheat furnaces, ceramic kilns, and petrochemical crackers.
How is ceramic fiber board installed? +
Refractory ceramic fiber board can be cut with a handsaw or utility knife and secured with high temperature anchors, ceramic pins, or stud welding. For furnace lining, install as a hot-face or backup layer with joints staggered. For pipe insulation, shape to curvature and band with stainless steel straps. Full installation guidance is provided with every order.
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