Differences and Selection Guide Between Ceramic Fiber Board and Calcium Silicate Board - Your Thermal insulation material Manufactruer

In the field of industrial and building insulation materials, ceramic fiber boards and placas de silicato de cálcio are among the most commonly used products. Both offer good fire resistance and thermal insulation performance, but their characteristics, application scenarios, and selection principles differ. Choosing the right material can significantly improve safety and cost-effectiveness in projects.

I. Basic Differences Between Ceramic Fiber Board and Calcium Silicate Board

✅ Ceramic Fiber Board

Material: Made from ceramic fiber cotton through vacuum forming
Resistência à temperatura: 1000–1260℃, up to 1430℃ for premium grades
Features: Lightweight, excellent thermal insulation, low thermal conductivity
Aplicações: High-temperature industrial furnace linings, power plant boilers, metallurgy, high-temperature insulation layers

✅ Calcium Silicate Board

Material: Produced from siliceous and calcareous materials under autoclave curing
Resistência à temperatura: 650–1000℃ (depending on grade)
Features: High strength, good compressive resistance, excellent moisture resistance
Aplicações: Fireproof partition walls, external wall insulation, power equipment insulation, pipeline insulation

II. Performance Comparison

Category	Placa de fibra cerâmica	Placa de Silicato de Cálcio
Resistência à temperatura	Up to 1000–1430℃, excellent stability at high temperatures	Generally ≤1000℃
Força	Relatively lower, more brittle	High strength, good mechanical properties
Weight	Lighter, easier for installation	Heavier
Isolamento térmico	Very low thermal conductivity, superior insulation	Good insulation, slightly lower than ceramic fiber board
Main Applications	Metallurgy, glass, ceramics, power plant boilers	Construction, power, shipbuilding, chemical pipelines

III. Selection Guide

For applications above 1000℃
→ Choose Placa de fibra cerâmica (e.g., furnace linings, high-temperature metallurgy).
For high strength or mechanical load-bearing requirements
→ Choose Placa de Silicato de Cálcio (e.g., fireproof partitions, construction, power equipment).
For lightweight thermal insulation requirements
→ Choose Placa de fibra cerâmica (ideal for high-temperature insulation layers).
For moisture resistance, fireproofing, and structural support
→ Choose Placa de Silicato de Cálcio (commonly used in construction and power industries).

IV. Conclusion

Ceramic Fiber Board → High-temperature insulation, lightweight refractory solution
Calcium Silicate Board → High strength, fireproof partitions, and pipeline insulation

In practical projects, these two materials are often used together: for example, ceramic fiber boards for furnace linings (insulation), and calcium silicate boards for outer structural support, achieving the best combined performance.

KERUI Refractory supplies different types of high temperature calcium silicate boards, architectural calcium silicate boards, ceramic fiber boards and other high temperature refractory boards. Please contact us for any needs.