Ceramic Fiber Boards | 1400°C – 1900°C

Product Overview

Our ceramic fiber boards are high-performance thermal insulation materials designed for industrial furnaces and kilns. Available in classification temperatures from 1400°C to 1900°C, they offer low thermal conductivity, low heat storage, and excellent thermal shock resistance. From 1400°C ceramic fiber to 1600°C polycrystalline mullite fiber and 1800°C alumina fiber — we cover the full high-temperature spectrum.

Why Choose FOVO Ceramic Fiber Boards?

• Cut energy costs — Low thermal conductivity reduces furnace energy consumption by 15–30%
• Faster production cycles — Low heat storage means quicker heat-up and cool-down, increasing throughput
• Built to last — High-purity fibers deliver excellent thermal shock resistance and stable performance over time
• Your design, your size — Custom dimensions with no minimum order quantity
• Full temperature range — From 1400°C to 1900°C, one supplier covers all your needs
• Proven quality — Manufactured with high-purity raw materials, ensuring consistent performance batch after batch

Key Features

• Low thermal conductivity – Reduces furnace energy consumption by 15–30%
• Low heat storage – Faster heating and cooling cycles, increases productivity
• Uniform fiber distribution – Consistent insulation performance
• Excellent thermal shock resistance – Withstands rapid temperature changes
• Chemical stability – Resistant to most furnace atmospheres
• Precise dimensions – Easy installation, minimal on-site cutting

Technical Specifications

Items	FV-1400	FV-1500	FV-1600	FV-1700	FV-1800	FV-1900
Classification Temperature (°C)	1400	1500	1600	1700	1800	1900
Bulk Density (kg/m³)	280–320	280–320	300–600	300–600	300–600	600–700
Linear Shrinkage (%)	<2 (1250°C×24h)	<2 (1350°C×24h)	<2 (1450°C×24h)	<1 (1550°C×24h)	<1 (1650°C×24h)	<1 (1750°C×24h)
Al₂O₃ (%)	45	50	72	73	74	76
Al₂O₃+SiO₂ (%)	>99	>99	>99	>99	>99.5	>99.5
Fe₂O₃ (%)	<0.2	<0.2	<0.1	<0.1	<0.1	<0.1
Material Type	Ceramic Fiber (Alumino-Silicate)	Ceramic Fiber (Alumino-Silicate)	Polycrystalline Mullite Fiber	Alumina Fiber	Alumina Fiber	Alumina Fiber

Material Type by Temperature Grade

Not all "ceramic fiber" is the same. At FOVO Thermal, we manufacture three distinct material types across the high-temperature spectrum:

• 1400°C Grade — Ceramic Fiber (Alumino-Silicate). Suitable for continuous use up to 1250°C. Cost-effective solution for standard industrial furnace applications.
• 1500°C – 1600°C Grade — Polycrystalline Mullite Fiber. Crystalline structure provides superior stability, extremely low shrinkage, and longer service life at elevated temperatures. Suitable for continuous use up to 1450°C.
• 1700°C – 1900°C Grade — Alumina Fiber. High-purity alumina for ultra-high-temperature applications above 1450°C. Maximum thermal stability and chemical resistance.

All grades are available in custom sizes with no minimum order quantity — whether you need a single piece for a laboratory furnace or bulk modules for an industrial kiln.

Standard Sizes

Length (mm)	Width (mm)	Thickness (mm)
1000	600	10 – 100
1200	1000	10 – 100

Custom sizes available upon request.

At FOVO Thermal, we manufacture ceramic fiber boards across the full high-temperature spectrum. However, not all "ceramic fiber" is the same:

Temperature Grade	Material Type	Recommended Continuous Use
1400°C	Ceramic Fiber (Alumino-Silicate)	≤ 1250°C
1500°C – 1600°C	Polycrystalline Mullite Fiber	≤ 1450°C
1700°C – 1900°C	Alumina Fiber	> 1450°C

All grades are available in custom sizes with no minimum order quantity. Whether you need a single piece for a laboratory furnace or bulk modules for an industrial kiln, we can manufacture to your exact specifications.

Typical Applications

Heat Treatment Furnace Linings

Suitable for insulation linings in box-type heat treatment furnaces, bogie hearth furnaces, and pit-type furnaces. The low heat storage characteristic of ceramic fiber board reduces heat-up time by over 30% compared to traditional brick linings — particularly advantageous for intermittent heat treatment processes (quenching, annealing, tempering, normalizing). Boards can be cut on-site, and furnace downtime for relining can be controlled within 2–3 days.

Induction Melting Furnace Lids and Sidewall Insulation

Suitable for lid linings and sidewall back-up insulation in medium-frequency induction melting furnaces. The low thermal conductivity of ceramic fiber board effectively reduces outer shell temperature, minimizes heat loss, and improves working conditions. Excellent thermal shock resistance withstands frequent lid openings.

Glass Tempering and Annealing Furnace Insulation

Suitable for heating section insulation in horizontal and curved glass tempering furnaces, as well as insulation linings in glass annealing lehrs. Ceramic fiber board contains no soluble alkali metal oxides, preventing surface contamination of glass products — making it an ideal insulation material for the glass industry.

Laboratory Furnaces and Atmosphere Furnaces

Suitable for linings in box-type laboratory furnaces, tube furnaces, and atmosphere-controlled furnaces. Dimensions can be customized to drawings with no minimum order quantity, meeting the frequent replacement needs of research institutes for non-standard sizes.

Metallurgical Sintering Furnaces and Pusher Kilns

Suitable for insulation linings in continuous high-temperature equipment such as sintering furnaces, pusher kilns, and roller kilns in the metallurgical industry. Excellent thermal shock resistance and chemical stability adapt to demanding long-term continuous operation conditions.

Selection Guide: Which Temperature Grade Should I Choose?

Actual Continuous Use Temperature	Recommended Classification Temperature	Recommended Product
≤ 1100°C	1260°C	1260 Ceramic Fiber Board
1100°C – 1250°C	1400°C	1400 Ceramic Fiber Board
1250°C – 1400°C	1500°C – 1600°C	1500/1600 Ceramic Fiber Board
> 1400°C	1700°C – 1900°C	1700°C – 1900°C Ceramic Fiber Board

Production Process

Packaging & Delivery

Accessories & Consumables

Need Help with Selection?

Not sure which temperature grade or thickness suits your furnace? Share your operating temperature and furnace type with us — our engineers will provide a free selection recommendation within 24 hours.