Refractory Ceramic Fibre Technical Information
Refractory Ceramic Fibre (RCF) textile products consist of carded ceramic fibre rated to 1260°C in optimum conditions blended with a small quantity of organic fibres that decompose from about 200°C. In order to ensure that the strength is maintained at high temperatures, the ceramic yarns are reinforced with either AISI 304 grade stainless steel wire (1000°C) or E glass (550°C) filaments. Given the high degree of shrinkage due to burn off of organic content at low temperatures, they are considered inferior to S-TEX silica and BELCOTEX® 110 fibre textiles. They are, however, more economical.
Furthermore, whilst refractory ceramic fibre textiles are asbestos free it should be noted that refractory ceramic dust has now been classified under Directive 97/96/EC among category 2 carcinogens. We urge our customers to consider changing from refractory ceramic fibre products, choosing BELCOTEX® 110, silica or bio soluble fibre alternatives.
Refractory ceramic fibre has the following key characteristics for thermal applications:
- High temperature stability.
- Excellent thermal shock resistance.
- Good dimensional stability.
- Low density.
- Low thermal conductivity.
- Incombustible but only after decomposition of organic fibre.
- Good flexibility.
- Good resistance to chemical agents.
| BASIC COMPOSITION OF REFRACTORY CERAMIC FIBRE | |
|---|---|
| SiO2 | 50 - 60% |
| Al2O3 | 30 - 50% |
| Na2O-H20 | 0.1% |
| Fe2O3 | 0.04% |
| Leachable Chlorides | - 10ppm |
| GENERAL PROPERTIES OF REFRACTORY CERAMIC | |
|---|---|
| Colour | White |
| Fibre Diameter | 2 - 3 micron |
| Specific Heat at 1093°C | 1129 J/KG °C |
| Fire Reaction | Incombustible |
| Max Continuous Temperature |
1260°C in optimum conditions. AISI 304 Grade Stainless Steel Wire Reinforcement - 1000°C. E Glass Reinforcement - 550°C. |
| Melting Point | 1790°C |
| Resistant to Chemicals | Good |
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