Basalt Fibre Technical Information
Basalt fibre textiles consist of 8-16 micron basalt fibre filament yarns that could then be voluminized, texturized, plied, or reinforced with wire.
Basalt fibre has the following key characteristics:
Thermal Applications:
- Low thermal conductivity.
- Excellent resistance to thermal shocks.
- Excellent mechanical strength and has higher tensile strength than E glass.
- Non-combustible.
- Good dimensional stability.
- Great flexibility.
- Good chemical resistance.
- Good abrasion resistance.
- Maintains integrity at temperatures up to 560°C. Basalt fibre exhibits superior temperature resistance compared to E glass fibres in the range 300°C - 560°C, and can handle short periods to 700°C- 800ºC in optimum conditions.
- Excellent heat insulation of pipes in nuclear plants as basalt is known to resist degradation caused by radiation.
Cryogenic Applications
- Basalt also functions in very low temperatures down to -260°C so are useful for insulating liquid nitrogen tanks and pipes in cryogenic applications.
| GENERAL PROPERTIES OF BASALT FIBRE | |
|---|---|
| Colour | Brown |
| Fibre Diameter | 8 - 16 micron |
| Tensile Strength of Dry Fibre | 600 - 730 NM/tex |
| Tensile Strength of Single Filament | 4000 - 4300 MPa |
| Tensile Modulus of Single Filament | 87 - 92 GPa |
| Application Temperature | -260°C - 560°C |
| Short Term Maximum Operating Temperature | 700°C in optimum conditions |
| Heat Conductivity | 0.031 - 0.038 W/M°K |
Leading manufacturers of basalt fibre include:
- Kammeny Vek in Russia.
- Mafic in the USA.
- HG GBF Basalt Fiber Co Ltd in China.
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