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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.

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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