Ceramic Fiber Board
Model:KXT CF107
Ceramic fiber board (model KXT CF107) is a rigid, vacuum-formed high-temperature insulation board made from ceramic fiber and inorganic binders. Five grades are available: COM (1100 °C), ST (1260 °C), HP (1260 °C), HA (1360 °C) and HZ (1430 °C). Density 260/320 kg/m³, tensile strength 0.5 MPa, thermal conductivity 0.085 W/m·K at 400 °C. Used for back lining of high-temperature industrial furnaces, porcelain furnace linings and heat treatment furnace linings. Custom sizes available; free samples on request.
What Is a Ceramic Fiber Board?
Ceramic Fiber Board (also called refractory ceramic fiber board, RCF board or alumina silicate insulation board; Kaxite model KXT CF107) is a rigid, high-temperature insulation board made from ceramic fiber and inorganic binders by vacuum forming technology. Ceramic Fiber Board uses non-brittle material, so it has good tenacity, high compressive strength, good flatness and mechanical process ability. Ceramic Fiber Board is an ideal material for wall lining and back lining of heating equipment.
Ceramic Fiber Board is available in five grades — COM, ST, HP, HA and HZ — covering classification temperatures from 1100 °C to 1430 °C and working temperatures from below 1000 °C up to 1350 °C. Standard board sizes are 600 × 400 mm and 900 × 600 mm, with thickness from 10 mm to 50 mm. Custom sizes and shapes are available on request.
Ceramic Fiber Board — Quick Specifications
ModelKXT CF107
GradesCOM / ST / HP / HA / HZ
Max Classification Tempup to 1430 °C
Density260 / 320 kg/m³
Tensile Strength0.5 MPa at 10% strain
Thermal Conductivity0.085 W/m·K at 400 °C
Standard Size600 × 400 mm / 900 × 600 mm
MOQ500 kg (negotiable)
Prime Features of the Ceramic Fiber Board
Ceramic Fiber Board is engineered to deliver reliable thermal insulation at high temperature. Key features of Ceramic Fiber Board include:
- Flat surface — the vacuum forming process produces a board with good flatness for tight furnace linings.
- Excellent mechanical and structural strength — Ceramic Fiber Board resists handling and installation loads without cracking.
- Equal volumetric weight and thickness — consistent density and thickness across every board for predictable thermal performance.
- Low thermal conductivity and low shrinkage — Ceramic Fiber Board reduces heat loss and holds its dimensions at rated temperature.
- Air-current resistant washing — Ceramic Fiber Board resists erosion from high-velocity combustion gases.
- Non-brittle material — good tenacity even after thermal cycling.
Available Grades — COM, ST, HP, HA and HZ
Ceramic Fiber Board is available in five standard grades. Each grade is identified by its classification temperature, which determines the maximum continuous working temperature. Choose the grade based on the hottest point in your furnace.
| Grade | Classification Temp | Working Temp | Colour | Density (kg/m³) |
|---|---|---|---|---|
| COM | 1100 °C | < 1000 °C | White | 260 / 320 |
| ST | 1260 °C | 1050 °C | White | 260 / 320 |
| HP | 1260 °C | 1100 °C | White | 260 / 320 |
| HA | 1360 °C | 1200 °C | White | 260 / 320 |
| HZ | 1430 °C | 1350 °C | White | 260 / 320 |
Classification temperature is the temperature the board can withstand without significant shrinkage. Working temperature is the recommended continuous operating temperature for long service life. For intermittent or cyclic service, use the classification temperature as the upper limit; for continuous service, use the working temperature.
Linear Shrinkage of the Ceramic Fiber Board
Linear shrinkage measures how much the board contracts after prolonged exposure to its rated temperature. Lower shrinkage means better dimensional stability and longer lining life. The following values are measured at density 320 kg/m³ for 24 hours.
| Grade | Linear Shrinkage (24 h) |
|---|---|
| COM | −4 % at 1000 °C |
| ST | −3 % at 1000 °C |
| HP | −3 % at 1100 °C |
| HA | −3 % at 1250 °C |
| HZ | −3 % at 1350 °C |
All values are negative (shrinkage). HZ grade shows the lowest shrinkage at the highest temperature, which makes HZ the preferred grade for furnace linings that operate near 1350 °C.
Thermal Conductivity of the Ceramic Fiber Board
Thermal conductivity of Ceramic Fiber Board is measured at density 285 kg/m³. Higher temperatures increase conductivity, so a board that performs well at 400 °C will insulate less effectively at 1000 °C. This data helps you calculate the required board thickness for your furnace.
| Mean Temperature | Thermal Conductivity (W/m·K) |
|---|---|
| 400 °C | 0.085 |
| 800 °C | 0.132 |
| 1000 °C | 0.180 |
Values apply to all five grades (COM, ST, HP, HA, HZ) at density 285 kg/m³. Contact our engineers with your hot-face temperature, cold-face target and furnace geometry and we will recommend the most economical board thickness.
Chemical Composition by Grade
Chemical composition determines the maximum service temperature and chemical resistance of Ceramic Fiber Board. Higher alumina content generally means higher temperature capability.
| Component | COM | ST | HP | HA | HZ |
|---|---|---|---|---|---|
| Al₂O₃ | 40 – 44 % | 45 – 46 % | 47 – 49 % | 52 – 55 % | 39 – 40 % |
| Al₂O₃ + SiO₂ | 95 – 96 % | 96 – 97 % | 98 – 99 % | 99 % | — |
| Al₂O₃ + SiO₂ + ZrO₂ | — | — | — | — | 99 % |
| ZrO₂ | — | — | — | — | 15 – 17 % |
| Fe₂O₃ | < 1.2 % | < 1.0 % | 0.2 % | 0.2 % | 0.2 % |
| Na₂O + K₂O | < 0.5 % | < 0.5 % | 0.2 % | 0.2 % | 0.2 % |
COM, ST, HP and HA are alumina-silicate (Al₂O₃ + SiO₂) ceramic fiber boards. HZ is a zirconia-containing (ZrO₂) grade, which provides the highest temperature capability (1430 °C classification) and the lowest shrinkage at high temperature.
Technical Specifications of KXT CF107
| Property | Typical Value |
|---|---|
| Model | KXT CF107 |
| Grades | COM, ST, HP, HA, HZ |
| Classification temperature | 1100 °C to 1430 °C (by grade) |
| Working temperature | < 1000 °C to 1350 °C (by grade) |
| Colour | White |
| Density | 260 or 320 kg/m³ |
| Tensile strength | 0.5 MPa (at 10 % strain) |
| Linear shrinkage (24 h) | −3 % to −4 % (by grade) |
| Thermal conductivity (400 °C) | 0.085 W/m·K |
| Thermal conductivity (800 °C) | 0.132 W/m·K |
| Thermal conductivity (1000 °C) | 0.180 W/m·K |
| Standard board size | 600 × 400 mm; 900 × 600 mm |
| Thickness | 10 – 50 mm (custom on request) |
Values above are typical for the KXT CF107 family. Please request the current data sheet for the exact grade you require.
Key Performance Advantages
Thermal performance
- Classification temperature from 1100 °C to 1430 °C (grade-dependent).
- Low thermal conductivity — 0.085 W/m·K at 400 °C.
- Low linear shrinkage — down to −3 % after 24 h at rated temperature.
Mechanical properties
- Tensile strength 0.5 MPa at 10 % strain for structural integrity.
- Good compressive strength and mechanical process ability.
- Non-brittle material with good tenacity.
Installation & handling
- Flat surface for tight furnace linings.
- Equal volumetric weight and thickness across the board.
- Can be cut, drilled and machined to size.
In-service durability
- Air-current resistant washing — resists erosion from fast combustion gases.
- Low shrinkage maintains lining integrity over long service life.
- Stable performance under repeated thermal cycling.
Typical Applications of Ceramic Fiber Board
Ceramic Fiber Board is specified wherever high-temperature insulation, low thermal conductivity and good mechanical strength are required. Common applications of Ceramic Fiber Board include:
- High-temperature industrial furnace back lining — hot-face or back-up insulation behind dense refractory bricks.
- Porcelain and ceramic furnace lining — kiln walls, crowns and car bottoms where flat, stable boards are required.
- Heat treatment furnace lining — mechanical and metallurgical heat treatment furnaces.
- Metallurgical furnace lining — annealing, forging and reheat furnaces.
- Petrochemical furnace lining — cracking furnaces, reformer furnaces and process heaters.
- Power generation — boiler and turbine insulation.
- General industry — any high-temperature insulation requiring a rigid, self-supporting board.
Ceramic Fiber Board vs Ceramic Fiber Blanket
Buyers often ask whether to choose a rigid ceramic fiber board or a soft ceramic fiber blanket. The table below summarises the main differences.
| Property | Ceramic Fiber Board | Ceramic Fiber Blanket |
|---|---|---|
| Form | Rigid board | Soft blanket |
| Compressive strength | High | Low |
| Flatness | Excellent | Not applicable |
| Self-supporting | Yes | No — needs anchors or wire mesh |
| Thermal conductivity | Lower at same density | Higher at same density |
| Erosion resistance | Good | Fair |
| Best for | Wall lining, back lining, hot-face where flat surface is needed | Large-area insulation wraps, expansion joints, curved surfaces |
For a flat, self-supporting furnace lining, choose Ceramic Fiber Board. For wrapping large curved surfaces or filling irregular gaps, choose ceramic fiber blanket. Both materials are available from Kaxite — see the Ceramic Fiber Blanket page for details.
Supply Options & Custom Fabrication
We supply Ceramic Fiber Board in the form that best fits your production line:
| Option | Available Range |
|---|---|
| Form | Full board, cut-to-size board, machined shape, groove or tongue-and-groove |
| Standard size | 600 × 400 mm; 900 × 600 mm |
| Thickness | 10 – 50 mm standard; other thicknesses on request |
| Density | 260 kg/m³ or 320 kg/m³ |
| Grade | COM, ST, HP, HA, HZ |
| Edge finish | Straight cut, beveled edge or tongue-and-groove on request |
| Branding | Neutral packing or your own label — OEM / ODM welcome |
Send us a drawing, a sample or simply the furnace hot-face temperature and lining area and we will quote the most economical Ceramic Fiber Board cutting layout.
Need a price for Ceramic Fiber Board today? Tell us grade, thickness, board size and quantity — our technical sales team replies within 2 business hours.
Why Buy Ceramic Fiber Board from Kaxite?
Ningbo Kaxite Sealing Materials Co., Ltd. is a China-based manufacturer and exporter of sealing and insulation materials, serving industrial distributors, OEMs and MRO buyers for more than a decade.
- Manufacturer, not just a trader — we control fiber blowing, vacuum forming, drying and machining in-house, which keeps quality consistent and lead times short.
- Application engineering support — our technical sales team reviews your hot-face temperature, furnace atmosphere and lining design before recommending a grade.
- Batch traceability — incoming ceramic fiber and binders are recorded, and finished Ceramic Fiber Board is checked for density, thickness, tensile strength, shrinkage and thermal conductivity before packing.
- Third-party inspection welcome — SGS, BV, TÜV or your own nominated inspector can be arranged before shipment.
- Export experience — regular shipments to Europe, North America, the Middle East, Southeast Asia and South America, with export packing and documentation handled in-house.
- One-stop sourcing — as a full-range insulation supplier we also produce ceramic fiber blanket, cloth, paper, rope and tape, so you can consolidate furnace insulation orders.
Quality Control & Inspection
- Incoming raw material check on ceramic fiber grade and inorganic binder.
- In-process control of fiber blowing, vacuum forming density and drying temperature.
- Finished goods inspection: density, thickness, tensile strength, linear shrinkage and flatness.
- Thermal conductivity testing at 400 °C, 800 °C and 1000 °C as required.
- Pre-shipment sampling and retained counter-samples for traceability.
- Third-party test reports available on request against your specification.
Have a specific standard or acceptance criterion? Send it to us before ordering and we will confirm in writing whether Ceramic Fiber Board KXT CF107 can meet it.
Ordering, Packing & Delivery
| Item | Details |
|---|---|
| Minimum order quantity | 500 kg for standard grades (negotiable for trial orders and mixed containers) |
| Sample policy | Free A4-size samples for evaluation; buyer covers courier cost |
| Lead time | Typically 15 – 25 days after order confirmation; stock items ship faster |
| Packing | Ceramic Fiber Board flat-packed on pallets, wrapped in film and strapped; export cartons or plywood cases available on request |
| Shipping | Sea, air or express; FOB Ningbo/Shanghai, CIF, DDP on request |
| Payment | T/T, L/C at sight, and other terms to be agreed |
| Documentation | Commercial invoice, packing list, bill of lading, certificate of origin, test report |
Lead times are indicative and confirmed per order.
Frequently Asked Questions
What is a Ceramic Fiber Board used for?
Ceramic Fiber Board is used for high-temperature insulation in industrial furnaces, kilns and boilers. Common applications include wall lining and back lining of high-temperature industrial furnaces, porcelain and ceramic furnace linings, heat treatment furnace linings, metallurgical furnace linings and petrochemical furnace linings. Ceramic Fiber Board is chosen when a flat, self-supporting, rigid insulation board is required.
Which grade should I choose — COM, ST, HP, HA or HZ?
Choose the grade based on the hottest point in your furnace. COM is suitable for working temperatures below 1000 °C. ST and HP are suitable for 1050–1100 °C. HA is suitable for 1200 °C. HZ is suitable for 1350 °C and provides the highest temperature capability and lowest shrinkage at high temperature. Tell us your hot-face temperature and furnace atmosphere and our engineers will confirm the correct grade.
What is the difference between classification temperature and working temperature?
Classification temperature is the temperature the board can withstand without significant shrinkage. It is the upper limit for short-term or intermittent service. Working temperature is the recommended continuous operating temperature for long service life. For continuous service, choose a grade whose working temperature is above your furnace's continuous operating temperature.
What is the difference between Ceramic Fiber Board and Ceramic Fiber Blanket?
Ceramic Fiber Board is a rigid, self-supporting board with high compressive strength and a flat surface — best for furnace wall lining and back lining. Ceramic Fiber Blanket is a soft, flexible blanket that must be anchored or held in place — best for wrapping large curved surfaces and filling irregular gaps. Both materials are available from Kaxite.
What board sizes and thicknesses are available?
Standard Ceramic Fiber Board sizes are 600 × 400 mm and 900 × 600 mm, with thickness from 10 mm to 50 mm. Other sizes and thicknesses can be produced on request. Cut-to-size boards, machined shapes and tongue-and-groove edges are available.
What is the MOQ and delivery time?
Standard MOQ is 500 kg, negotiable for trial orders or mixed containers. Production lead time is normally 15–25 days after order confirmation, and stock sizes can ship sooner.
Can I get a free sample before placing an order?
Yes. We provide free A4-size samples for evaluation; the buyer covers the courier cost, which can be deducted from the first order. Send us your grade, thickness and application details so we can send the most suitable Ceramic Fiber Board.
Is Ceramic Fiber Board suitable for food-contact or potable-water applications?
No. Ceramic Fiber Board is an industrial high-temperature insulation material and is not intended for food-contact or potable-water applications. For those applications, please contact us for alternative materials such as food-grade silicone sheet or PTFE sheet.
Send your specification — get a quotation and a free sample Include grade, density, thickness, board size, hot-face temperature, furnace atmosphere and annual quantity for the fastest response.
Technical review: This Ceramic Fiber Board product page was reviewed by the Kaxite application engineering team.
Data sheet version: KXT CF107-2026-09. Specifications subject to change without notice.
Last reviewed: September 2026.
Data sheet version: KXT CF107-2026-09. Specifications subject to change without notice.
Last reviewed: September 2026.
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