Recently, I have received many inquiries from customers saying:
"We need coated fiberglass fabric that can continuously work at 1800°C–2000°C."
I fully understand why high-temperature performance is important for insulation covers. However, I also hope customers can carefully distinguish between melting point, maximum short-term temperature resistance, and continuous working temperature.
These are completely different concepts.
When someone claims a flexible coated fiberglass fabric can continuously operate at 2000°C, it is worth asking:
Is this a real working temperature, or just a theoretical peak temperature of the material component?
At around 1800°C, many steel materials have already lost their mechanical strength or reached melting conditions. Expecting a flexible insulation fabric with organic coating materials to maintain long-term performance at this temperature is not realistic.
For removable insulation covers, the right material should be selected based on actual service conditions.
Here is a general reference for common insulation cover fabrics:
- Fiberglass softening point: approx. 850°C
- Continuous working temperature: approx. 200°C
- Mainly used for dust protection, wear resistance and low-temperature insulation covers
- Fiberglass softening point: approx. 850°C
- Silicone coating decomposition range: approx. 250°C–300°C
- Continuous working temperature: approx. 260°C
- Excellent flexibility, weather resistance and fabrication performance
- High silica fiberglass softening point: approx. 1700°C
- Continuous working temperature: approx. 800°C–1000°C (depending on structure and application conditions)
- Designed for higher heat exposure and hot-face insulation applications
- Fiberglass softening point: approx. 850°C
- Stainless steel melting point: approx. 1400°C–1500°C (depending on alloy grade)
- Continuous working temperature: approx. 550°C–750°C
- Provides improved strength, durability and tear resistance
The highest temperature number does not always mean the best insulation solution.
A professional supplier should help customers choose materials based on real operating temperature, exposure time, mechanical requirements and safety factors.
At Suntex, we believe accurate technical communication is the foundation of reliable industrial solutions.
Because the right fabric selection protects not only equipment — but also your project success.