Refractory ceramic fiber board for high temperature insulation up to 1430C. Rigid, easy to cut, multiple densities and grades. Factory direct pricing.
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.
This refractory ceramic fiber board is widely used as:
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.
Rosetexwool is a ceramic fiber board manufacturer and supplier serving more than 60 countries since 1982. Every ceramic fiber board is produced under a documented quality system certified to ISO 9001, CE and SGS, with batch-level traceability from raw material to finished product.
What our manufacturing capability covers:
For quotations, lead times or technical data sheets, contact our team with your specification and target service temperature. Explore the ceramic fiber insulation hub for the full range, or read the ceramic fiber insulation buying guide for selection support.
ceramic fiber special shaped — Vacuum-formed shapes produced to your drawing, so burner blocks, ladle covers and complex furnace geometries arrive ready to fit.
polycrystalline mullite fiberboard — Ultra-high temperature board to 1900 °C with exceptional thermal stability and very low shrinkage at the top of the range.
flexible silicate insulation — Bends around curved shells and irregular surfaces without cracking, which rigid board cannot do without expensive fabrication.
For the full ceramic fiber range, temperature grades and density options, see our ceramic fiber insulation guide.
For adjacent material options across temperature and application ranges, explore our rock wool insulation hub.
Part of the Ceramic Fiber product family.
| 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 |
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: September 19, 2026
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.
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.
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.
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.
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.
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.
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.
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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