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Basalt Fibre Felts, heat-resistant up to 800 °C
Basalt is a dark and non-crystalline rock that comes from the fast cooling of volcanic magma. Final Advanced Materials works with the fibres from this rock in order to manufacture products with extreme resistance. Basalt fibre is an ecological material when it comes to both manufacturing and recycling it. Moreover, its thermal and mechanical properties are far superior to glass fibre.
Basalt fibre felts are fireproof and produce neither smoke nor toxic gases. These felts can resist flames and chemical products. In addition, they can withstand operating temperatures up to 700 °C and peak temperatures up to 800 °C. Additionally, they are great materials for electrical insulation and soundproofing. These products are therefore used in the industry for electrical and thermal insulation.
Our basalt fibre felts are made from basalt fibres with a diameter from 8 to 16 μm. They are available in thicknesses ranging from 4 to 10 mm.
For more information regarding the availability, refer to the technical data sheet.
Applications of Basalt Fibre Felts
- Electrical insulation
- Thermal insulation
General Data: Basalt Fibre
Technical Data: Basalt Fibre
Physical variables included in this documentation are provided by way of indication only and do not, under any circumstances, constitute a contractual undertaking. Please contact our technical service if you require any additional information.
FAQs that can help you in this category
Felts made from carbon/graphite fibre are excellent at withstanding high temperatures, and are used up to 3,000°C. These felts are stable up to 2,000°C, but only in an inert, oxygen-free environment. Otherwise, they oxidise above 300°C. Unlike carbon/graphite felts, zirconia felts are resistant to temperatures up to 2,000°C, even in the presence of oxygen in the environment.
Final Advanced Materials' biosoluble fibre felts are a safe alternative to replace asbestos-based insulation or other refractory fibres. These fibres have low biopersistence, meaning the body can eliminate any inhaled fibre rapidly and naturally. These felts have a low thermal conductivity and a temperature resistance of up to 1,400°C, and are used primarily as oven coatings, but also as a customisable local thermal insulation.
The only felts capable of withstanding a continuous exposure to temperatures exceeding 1,500°C are ceramic (Al2O3), zirconia (ZrO2) or graphite fibre-based felts. Each felt has specific constraints: graphite felts can only be used in an inert atmosphere or in a vacuum, while zirconia felts have poor mechanical properties, and ceramic fibre felts can only resist temperatures up to 1,650°C.
The other felt families (glass, silica, biosoluble, RCF, basalt, etc.) cannot withstand a continuous exposure to more than 1,260°C.
The material has a thermal conductivity of 0.06 W/m·K at 200°C, and 0.30 W/m·K at 1,000°C. It is substantially lower than that of conventional refractory materials (often between 1 and 2 W/m·K at these temperatures). The felts offered by Final Advanced Materials are available in several densities, ranging from 64 to 160 kg/m3. The higher the density, the lower the conductivity which can go as low as 0.20 W/m·K at 1,000°C.