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 calcium silicate boards 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
Temperature Resistance: 1000–1260℃, up to 1430℃ for premium grades
Features: Lightweight, excellent thermal insulation, low thermal conductivity
Applications: 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
Temperature Resistance: 650–1000℃ (depending on grade)
Features: High strength, good compressive resistance, excellent moisture resistance
Applications: Fireproof partition walls, external wall insulation, power equipment insulation, pipeline insulation

II. Performance Comparison

Category	陶瓷纤维板	硅酸钙板
Temperature Resistance	Up to 1000–1430℃, excellent stability at high temperatures	Generally ≤1000℃
Strength	Relatively lower, more brittle	High strength, good mechanical properties
Weight	Lighter, easier for installation	Heavier
Thermal Insulation	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 陶瓷纤维板 (e.g., furnace linings, high-temperature metallurgy).
For high strength or mechanical load-bearing requirements
→ Choose 硅酸钙板 (e.g., fireproof partitions, construction, power equipment).
For lightweight thermal insulation requirements
→ Choose 陶瓷纤维板 (ideal for high-temperature insulation layers).
For moisture resistance, fireproofing, and structural support
→ Choose 硅酸钙板 (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.