Share this page by mail Faq Sections
The choice depends mainly on the temperature and the mechanical stresses. Final Advanced Materials' high-temperature epoxy resins are generally limited to between 150 and 350°C, with satisfactory mechanical resistance (typical sheer-stress 10–30 MPa) and a degree of elasticity. However, the ceramic cements produced by Final Advanced Materials can be used up to 2,200°C, depending on the grade (alumina, zirconia, silicate, silica). They have excellent temperature resistance, but remain fragile (brittle behaviour, no elasticity). In the case of assemblies subject to differential expansion or vibration, epoxy is by far the preferred solution, if permitted by the maximum temperature of the application. However, in the case of extreme environments (kiln, vacuum, reducing atmosphere) which exceed 350°C, ceramic cement must be chosen.
The ceramic cements distributed by Final Advanced Materials have maximum working temperatures ranging between 650°C and 2,200°C. For example, alumina-based formulations often reach 1,650–1,760°C in an oxidising atmosphere. However, silicate systems are limited to around 1,000–1,200°C. The real maximum working temperature depends greatly on the environment (air, vacuum, inert gas), the time of exposure to this temperature and the thermal cycle (gradient, thermal shock). Specifically: the metal-loaded ceramic adhesives produced by Final Advanced Materials resist only up to the maximum temperature of the filler (650°C, for example, in the case of aluminium powder).
Yes, Final Advanced Materials produces epoxy resins loaded with silver, nickel or graphite with electrical conductivity (typical resistivity 10⁻⁴ to 10⁻³ Ω·cm) sufficient to enable a weld to be replaced. However, their temperature resistance is limited to 150–250°C under continuous temperature, or 300°C for short-term with thermal curing. Above this temperature the organic matrix degrades (under the effect of oxidisation and pyrolysis). NB: Final Advanced Materials' metal-loaded ceramic cements (nickel, aluminium or stainless steel) are not suitable for applications requiring electrical conductivity and high-temperature resistance (>350°C) because their electrical conductivity is far too low.
Show More >>
A castable ceramic cement has low viscosity, enabling casting or pouring in moulds of complex shapes. It is formulated to limit segregation, to ensure effective dimensional reproducibility, and to produce a ceramic part. Potting cement is used to encapsulate or fix components in an assembly.
At Final Advanced Materials castable cements are optimised for the manufacture of parts (final density 2.0–3.0 g/cm³), while potting cements are designed to prioritise adhesion in assemblies (housings, resistor overmoulding, etc.).
For foundry moulds Final Advanced Materials produces alumina, silicon carbide, silica or zirconia-based cements, which are suited for temperatures between 1,200 and 2,200°C. Zirconia formulations are particularly suitable if a very high resistance to chemicals is required. Alumina cements have better mechanical resistance (>40 MPa in compression). SiC cement is a very good option for molten metal casting, launders, crucibles or nozzles. The choice depends on the cast metal and the temperature (e.g.: aluminium ~700°C, steel >1,500°C) and the thermal shock resistance.
The ceramic casting cements produced by Final Advanced Materials have standard compression resistances of 10 to 40 MPa, depending on the formulation and porosity. Thermal shrinkage is generally low, reducing internal stresses and cracking. Dense alumina-based formulations offer the best mechanical performance, while more insulating systems have a lower resistance, but reduced thermal conductivity (<0.15 W/m·K).
Show More >>
Final Advanced Materials' Duralco high-temperature paints provide improved resistance to corrosion and adverse weather. The choice of paint will depend on the usage conditions and the material of the medium requiring protection. When the surface has been descaled, derusted, cleaned and degreased you can apply the paint using a brush or spray gun. Specifically: 2 thin layers are preferable to 1 thick layer.
If you require thermal resistance up to 650°C in a humid and/or saline atmosphere, the aluminium-based paint produced Final Advanced Materials offers would be a great solution. However, if the temperature requirement does not exceed 800°C, the Duralco 230 paint, which is stainless steel-loaded, would be more effective.
The ceramic coatings (BN or graphite) offered by Final Advanced Materials have low surface energy, which limits the adhesion of molten metals (Al, Zn, Cu, etc.). They reduce wetting and facilitate stripping. Their thermal stability and their chemical inertia improve the lifetime of the tools used. They also reduce metal contamination and wear of tools.
The coatings' maximum working temperature will depend on the gaseous environment. Temperature stability is limited to 450°C for graphite and 850°C for boron nitride in air or an oxidising atmosphere, and to over 1,000°C in a vacuum or inert gas.
The BN coatings offered by Final Advanced Materials can be applied with a spray, a brush or by dipping. Surface preparation (degreasing, roughness Ra 1.6–3.2 µm) is essential to provide a better adhesion. Drying is carried out at ambient temperature. The typical thickness is 10 to 50 µm. The thinnest possible layers should be used for application. Let each layer dry fully before applying a new one. If a layer is too thick it will have a lower resistance, and a higher risk of delamination or cracking. BN provides excellent thermal stability (as high as 800/900°C in air and 1,800°C in a vacuum or inert gas).
Show More >>
Calcium silicate boards have a low density (200–1,000 kg/m³), low thermal conductivity (~ 0.05–0.35 W/m·K) and high temperature resistance of up to 1,000°C. They are used as structural insulators.
Mica boards (phlogopite or muscovite) have great dielectric strength (>20 kV/mm) and temperature resistance up to 500–1,000°C, depending on the type. It must be permanently compressed between 2 other boards to preserve its mechanical integrity (the silicon binder degrades at high temperature). Use of mica composite requires particular attention: please contact Final Advanced Materials for more information.
Yes, the inorganic composites produced by Final Advanced Materials can be CNC machined. Machining of calcium silicate-based (CaSiO₃) refractories or derived materials of the insulating boards type involves specific aspects relating to their low density, high porosity and low mechanical cohesion. Although these composites are not hard, they pose a high risk of scaling and crumbling: loads must therefore be minimised, and stripping of material must be avoided. The resulting powder is very abrasive and it is therefore essential that a dust extraction system is installed on your machinery. We can machine these materials in our production shop.
For continuous use at 1,000°C, Final Advanced Materials recommends composites made of ceramic fibres or calcium silicate. These materials have a low thermal conductivity (~0.08–0.35 W/m·K) and high dimensional stability. Nanoporous composites can go as low as 0.02–0.04 W/m·K but are more mechanically fragile. The choice depends on your requirements: thermal insulation or mechanical resistance. We require a complete description of the application and of the stresses before we can recommend the most suitable product.
Show More >>
Final Advanced Materials' microporous insulators have sub-micron pores, limiting thermal conduction. Nanoporous insulators have even smaller pores (<100 nm), reducing thermal transfers still further. Final Advanced Materials' nanoporous materials offer extremely low thermal conductivity levels (~0.015–0.025 W/m·K to 200°C), although they are more effective than those of microporous materials. However, nanoporous materials are more sensitive to moisture and mechanically much more fragile: they cannot be subjected to mechanical stresses during operation.
The nanoporous panels distributed by Final Advanced Materials have very a low thermal conductivity, with values ranging from 0.015 to 0.025 W/m·K at moderate temperature (200–400°C). At high temperature (>800°C) these values are higher but are still lower than those of more traditional insulators. By comparison, fibrous insulators are generally around 0.1–0.3 W/m·K. The choice of insulator will also depend on its mechanical strength and on the environment.
Yes, the microporous boards offered by Final Advanced Materials can be machined with CNC (milling or cutting). Their low mechanical resistance (often <4 MPa when compressed) requires low speeds and special tools. They cause fine dust, requiring a dust extraction system. Although these composites are not hard, they pose a high risk of scaling and crumbling: loads must therefore be minimised, and stripping of material must be avoided. The resulting powder is very abrasive, and it is therefore essential that a dust extraction system is installed on your machinery. We can machine these materials in our production shop.
Show More >>
To obtain an estimate from Final Advanced Materials, detailed technical specifications must be sent. These must include dimensions, service temperature, mechanical stresses and desired characteristics (thermal conductivity in W/(m·K), density, chemical resistance). We also recommend providing technical plans. Final Advanced Materials then assesses feasibility, proposes suitable materials, and gives a detailed estimate, including deadlines, manufacturing processes and quantities.
For off-the-shelf products, simply send a reference to obtain an estimate.
Final Advanced Materials distributes its advanced materials across the world. Items are packaged in compliance with industry standards (protection against shock and moisture). The materials, which are designed for applications in extreme environments, and which have differing properties, are transported using specialist carriers, and delivery times can vary depending on the destination.
Final Advanced Materials provides custom transformation services, including custom cutting, textile assembly, custom weaving and technical materials machining. Custom cutting is performed for a wide variety of materials, using equipment enabling precise single-layer or multi-layer cutting.
Final Advanced Materials has an in-house textile assembly workshop for the manufacturing of custom parts (fabrics, sleeves, braided ropes, thermal shields) out of technical fibres. The company also provides custom weaving (2D and 3D), including the development of textile weave patterns and small series manufacturing.
Machining concerns rigid materials and makes it possible to manufacture technical parts engineered for mechanical stresses and dimensional tolerances.
Show More >>
To help you choose the crucible best suited for your needs Final Advanced Materials considers two criteria: the maximum attainable heating temperature and the material which is to be melted.
Alumina (Al2O3) is the best choice in terms of value for money. It is chemically very inert, and can be used up to 1,700°C.
Zirconia (ZrO2) is more resistant to thermal shock but chemically less stable. Depending on the type of zirconia, it can be used up to 1,800°C.
Magnesia (MgO) is even more inert, and is resistant up to 2,000°C, but it also has the lowest thermal shock resistance.
Graphite, and vitreous carbon, can be used up to 3,000°C in an inert atmosphere or vacuum. However, when used in air these materials oxidise, and can be used only up to approximately 450-500°C.
Final Advanced Materials recommends that you always work in an argon or nitrogen atmosphere, or a vacuum, to optimise use of these materials. In an oxidising atmosphere their use is very limited.
To melt non-ferrous metals and special alloys, Final Advanced Materials recommends the use of graphite or ceramic crucibles.
Graphite and vitreous carbon are recommended for foundry applications due to their excellent thermal conductivity (between 90 and 180 W.m-1.K-1) and their low expansion (between 2 and 5 10-6.K-1). However, these types of crucibles can react with certain oxides and must be used in an inert atmosphere or vacuum.
Alumina (Al2O3) is chemically stable and suitable for less reactive alloys.
Zirconia (ZrO2) has excellent chemical inertia and is suitable for special alloys and reactive materials.
Silicon carbide (SiC) has great thermal conductivity (125 W.m-1.K-1) and low expansion (4.5 10-6.K-1). It is suitable for aluminium, copper and intensive production.
Magnesia (MgO) is resistant to basic environments and nickel-rich alloys.
Show More >>
Macor is a machinable vitroceramic with a density of 2.52 g/cm3 and capable of resisting temperatures up to 1,000°C for a short term. Macor stands out for its excellent machinability when dry, and by its low thermal conductivity (1.46 W/(m·K)), making it an effective insulator for high temperatures, and an excellent electrical insulator.
Shapal Hi-M Soft has a high thermal conductivity (92 W/(m·K)) and good mechanical properties. Shapal Hi-M Soft is slightly more difficult to machine than Macor but is excellent for heat dissipation.
Final Advanced Materials recommends Macor for prototyping or complex parts with a maximum continuous temperature of 800°C and a short-term temperature of 1,000°C, and Shapal Hi-M Soft for challenging thermal applications.
Hexagonal boron nitride (h-BN) has a hexagonal crystalline structure, meaning that it is easy to transform using dry machining with carbide tools on a standard CNC machine. Its thermal conductivity is high (20–120 W/(m·K)), and it can withstand temperatures as high as 850-900°C in air. Final Advanced Materials recommends h-BN for high-temperature electrical insulators, or for applications in contact with molten metals or scoria (crucibles, casting support).
Among machinable ceramics, Macor stands out for its high dielectric strength of 45 kV/mm, resistivity of 1015 Ω.m and dielectric constant of 6.01 (at 20°C and 1 MHz). Macor remains stable up to 1,000°C, making it the ideal solution for high-temperature insulators and electronic substrates. For applications where the top priority is high-temperature electrical insulation, Final Advanced Materials therefore recommends Macor for its dielectric stability and its low dielectric loss.
Show More >>
96% sintered alumina's density is 3.7 g/cm³, its hardness 14 GPa and its flexural strength 200 MPa, with a thermal working limit of approximately 1,500°C. 99.7% alumina is purer, its density reaches 3.9 g/cm³, its hardness 17 GPa and its flexural strength over 370 MPa. The presence of pores and impurities in 96% alumina reduces its wear resistance and corrosion resistance. In the case of challenging applications, 99.7% alumina provides greater performance, better chemical resistance and a longer lifetime. Final Advanced Materials recommends 99.7% alumina for essential parts and 96% alumina for less severe applications.
Sintered alumina (Al₂O₃, density of 3.9 g/cm³, hardness of 17 GPa) is extremely resistant to wear but sensitive to mechanical impacts, with a fracture toughness of approximately 4 MPa·m1/2. Yttria-stabilised zirconia (ZrO₂-Y2O3, density of 6 g/cm³, hardness of 12 GPa) has a higher fracture toughness, of approximately 7 MPa·m1/2, making it ideal for parts which are subject to impacts. Alumina is preferred for its chemical resistance and its abrasion resistance, while zirconia will be more suited to applications requiring very high impact resistance and high durability, such as implants or cutting tools. Final Advanced Materials recommends taking into consideration requirements of hardness and resistance to mechanical stresses to achieve an effective balance and choose the most suited material.
Sintered silicon nitride (Si3N4) combines a density of 3.2 g/cm³, a hardness of 15 GPa and a fracture toughness of 7.5 MPa·m1/2. It resists temperatures up to 1,400°C in continuous service, and its thermal conductivity varies between 20 and 30 W/(m·K). This material withstands thermal shocks, and resists oxidisation and mechanical wear. It is used in high-speed bearings, turbines, motor-vehicle parts such as turbocompressors and ignition plugs, and for tools which are subject to high abrasion. Final Advanced Materials recommends Si3N4 for environments which combine both mechanical stresses and high temperatures.
Show More >>
Pressed cordierite, with a density of 2.1 g/cm3, has a low thermal expansion coefficient (2–4.5×10-6/K), providing excellent thermal shock resistance and resistance to rapid thermal cycling. Steatite, with a density of 2.7 g/cm3, has a high dielectric strength (~15 kV/mm) but a lower thermal shock resistance. Mullite, with a density of 2.8 g/cm3, stands out for its stability at high temperature (up to 1,700°C) and its chemical resistance. To help you choose the type of pressed ceramic best suited to your requirements, Final Advanced Materials takes into account the application, but also the material’s thermal resistance, mechanical resistance and electrical insulation.
Pressed steatite has the best electrical insulation, with a dielectric strength of 15 kV/mm and a resistivity of over 105 at 600°C. It withstands temperatures as high as 1,000°C and has excellent dimensional stability. Cordierite and mullite have lower dielectric strengths (10 kV/mm) but are less suited to high tensions. Final Advanced Materials recommends steatite for high-voltage electrical components such as supports, insulators and electrical resistor caps.
For thermal applications requiring thermal shock resistance, it is recommended to use porous pressed ceramics. Porous steatite, with a density of approximately 1.8 g/cm3 and a thermal expansion coefficient of approximately 8-9x10-6/K, can resist to temperatures up to 1,000°C. Porous cordierite, with a density of approximately 1.9 g/cm3 and a thermal expansion coefficient of approximately 4-6x10-6/K, can resist to temperatures up to 1,200°C. Porosity slightly improves the resistance to thermal shock, but steatite has a higher thermal expansion coefficient than cordierite. Final Advanced Materials therefore recommends porous cordierite rather than porous steatite for applications requiring thermal shock resistance.
Show More >>
Aluminium nitride substrates (AlN) are the ideal solution for optimum thermal dissipation. They have a high thermal conductivity of 170 to 200 W/(m·K), a density of approximately 3.2 g/cm³ and a dimensional stability up to 1,000°C. Alternatively, you can choose alumina substrates (Al₂O₃), which have a lower conductivity (of 25 to 30 W/(m·K)) but which are more cost-effective. AlN effectively dissipates heat from high-power-density circuits, limiting hot spots and increasing reliability. Final Advanced Materials recommends AlN for high-performance applications such as high-power LEDs and thermally sensitive microelectronic components.
Alumina (density of 3.95 g/cm³, Al₂O₃ 99.7%) has a moderate thermal conductivity of 25 to 30 W/(m·K) and a dielectric strength of 10 to 12 kV/mm. However, aluminium nitride (AlN) combines a density of approximately 3.2 g/cm³, a very high thermal conductivity (170 to 200 W/(m·K)) and a dielectric strength of 10 kV/mm while also remaining stable up to 1,000°C. Therefore AlN ensures better thermal transfers for critical electronic circuits, while alumina is mainly used for more cost-effective applications, or applications requiring only standard electrical insulation. If thermal dissipation is a determining factor, Final Advanced Materials recommends choosing AlN.
Ceramic substrates are available in standard thicknesses from 0.15 mm to 2.0 mm, with typical dimensions ranging from 50.8×50.8 mm to 168×168 mm depending on the material. Custom dimensions can be provided to meet specific requirements. Dimensional tolerance is generally +0.2/-0.05 mm. Final Advanced Materials can also provide substrates meeting industrial requirements, with machining, drilling or etching options for direct integration into electronic devices.
Show More >>
Final Advanced Materials produces a very wide range of alumina powders to suit various industrial projects. Series 100 alumina powders can be used for precision sanding and micro-sanding applications with a d50 particle size of 1.5 µm to 2 mm. The series 1,000 has a d50 particle size ranging from 0.05 µm to 3 µm and can be used for metallographic and mineralogical polishing applications. The 900 and 1,500 series can be used for filtration applications with particle sizes of 78 µm to 10 mm.
Final Advanced Materials' hexagonal boron nitride (h-BN) is an excellent high-temperature dry lubricant due to its layered structure similar to that of graphite. It remains stable up to 900°C in air and 2,500°C in a vacuum or inert atmosphere. It also has a thermal conductivity of 30 to 60 W/(m·K). Its low hardness (~2 GPa) and low friction coefficient (~0.15) effectively reduce of wear. Unlike graphite, it offers good performances in an oxidising environment. Final Advanced Materials recommends h-BN powders for applications such as dry lubrication, mould release and high-temperature surface protection.
The choice depends on the desired thermal performance for the resin or composite. Aluminium nitride (AlN) powders increase thermal conductivity up to 150 to 200 W/(m·K), but also provide effective electrical insulation. Boron nitride powders (h-BN) increase thermal conductivity up to 40 to 60 W/(m·K) and thermal stability up to 800–900°C in air, providing a balance between conductivity and ease of application. Alumina powders (Al₂O₃), which are more cost-effective, provide a more moderate conductivity of 20 to 35 W/(m·K). Final Advanced Materials recommends adjusting the particle size and the load level to optimise overall performance.
Show More >>
Alumina beads (Al2O3), with a density of 3.9 g/cm³ and a hardness of 17 GPa, are cost-effective and suitable for standard grinding operations, in particular for mineral loads or pigments. Zirconia beads (stabilised ZrO2) have a higher density (6 g/cm³) and a better fracture toughness (7 MPa·m1/2), which improves the effectiveness of the grinding and reduces treatment time. They also cause less contamination and have a better wear resistance. Final Advanced Materials recommends zirconia for intensive or high precision grinding operations, and alumina for more cost-effective applications.
Ceramic beads are available in standard diameters ranging from 0.4 mm to 3.3 mm depending on the applications (grinding, bearings, polishing beads). The smaller beads are used for fine drilling, while the larger diameters are suitable for mechanical applications. The precision tolerances can attain high grades such as G10 to G100 (ISO standard 3290), with a sphericity of less than 0.25 µm for premium grades. The surface roughness (Ra) is 0.02 µm. Final Advanced Materials produces beads of different diameters to meet the strictest industrial requirements.
Stabilised zirconia beads (ZrO₂) have a high density (6 g/cm³), a hardness of 12 GPa and an excellent fracture toughness, enabling them to resist wear and mechanical impacts. They also have a high chemical resistance to acids, bases and corrosive environments and can withstand temperatures as high as 1,050°C. Final Advanced Materials therefore recommends zirconia for industrial valves which are exposed to aggressive environments and which require a reliable and long lasting material.
Show More >>
Graphite can withstand different temperatures depending on the atmosphere in which it is used. Its working environment directly affects its thermal performances.
In a vacuum or an inert atmosphere, graphite can withstand extremely high temperatures, even above 2,000°C. If oxygen is not present, the material retains excellent thermal and structural stability.
In air or an oxidising atmosphere, however, the maximum working temperature is lower. At around 400 to 500°C and above; graphite starts to oxidise gradually on contact with oxygen, leading to a degradation of its properties and loss of material.
Choosing the right graphite grade and considering the atmospheric conditions in which the graphite will be used is absolutely necessary to obtain the performance and lifetime needed for a given application.
The Final Advanced Materials team is at your disposal to help you choose the most suitable graphite solution based on your thermal and environmental constraints.
Due to its layered crystalline structure, graphite has excellent electrical and thermal conductivity properties.
This organisation facilitates the movement of electrons and the propagation of heat within the material.
However, graphite also has anisotropic properties: its conductivity varies depending on the direction of the crystalline layers. Conductivity is thus higher in the direction parallel to the layers than in the direction perpendicular to them.
Parameters such as the graphite's purity and density also influence its electrical and thermal characteristics. All these characteristics therefore determine the level of conductivity of the material.
Despite these variations graphite remains an excellent thermal and electrical conductor, which is particularly suited to many demanding industrial environments.
The Final Advanced Materials team is at your disposal to help you choose the most suitable graphite for your technical requirements.
To select the best graphite grade for your application, several parameters must be taken into account:
• What is the working temperature?
• What are the applied mechanical stresses?
• What level of thermal or electrical conductivity is needed?
• What are the wear and friction conditions?
• What is the operational chemical environment?
Analysing these various parameters will help you determine which graphite grade will be most effective and best suited to your technical constraints .
The Final Advanced Materials team is at your disposal to assist you with this analysis, and help you assess graphite solution is best suited for your application.
Show More >>
Final Advanced Materials offers a very wide selection of fabrics which can withstand temperatures ranging between -72°C and +2,000°C. For applications reaching temperatures as high as 550°C, fibreglass-based fabrics are the most versatile. They combine high mechanical and chemical resistances and are also effective electrical and thermal insulators. For applications with a continuous exposure to temperatures over 500°C, fabrics made from basalt fibre (800°C), silicate fibre (1,000°C) or ceramic fibre (1,300°C) are recommended. The choice of fabric depends on the desired application. Whether for insulation or protection, the service conditions are a determining factor for the choice of fabric.
The Zetex and ZetexPlus fabrics produced by Final Advanced Materials are both high-temperature fibreglass fabrics, used for thermal protection or insulation applications. Zetex fabrics are suitable for standard uses, with a resistance to temperatures of 540°C in continuous service and up to 700°C short-term. ZetexPlus fabrics are given a vermiculite-based treatment which improves their resistance to abrasion and mechanical stresses, while enabling them to withstand high temperatures, 815°C in continuous service, and up to 1,095°C short-term. The choice between these two materials therefore depends primarily on the working conditions.
The biosoluble fibre high temperature fabrics produced by Final Advanced Materials are designed to meet the requirements of European regulations, in particular REACH. These fibres are not classified as CMR and exhibit low biopersistence, meaning they can naturally be eliminated from the body. The materials are carefully selected to limit the presence of substances of concern and to guarantee their compliance. The technical and regulatory information is given in the technical data sheets and the SDS to support their use.
Show More >>
High-temperature felts are frequently used in industry for the insulation of ovens. These are lightweight materials which are simple to use, and which provide excellent thermal insulation. They are used in several sectors such as foundry, glass working and ceramics. The choice of felt depends on the oven’s temperature, the chemicals and the heating process. Final Advanced Materials offers felts with different compositions and temperature resistances, most with low biopersistence meaning they pose no danger for the operators.
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.
Show More >>
Whether for insulation or protection applications, high-temperature tapes are frequently used in the industry, on manifolds, tubes and exhausts. Final Advanced Materials produces fibreglass tapes with excellent insulating properties up to 550°C, and basalt fibre tapes which combine insulation and thermal stability up to 700°C and also have a natural bronze colour without treatment. These tapes can be coated with silicone to meet sealing needs.
Basalt fibres and ceramic fibres are inorganic fibres which are resistant to very high temperatures: 700°C and 1,100°C respectively. They are used in the industry or the aeronautics sector for insulation and protection applications, primarily thermal protection. Both these fibres have excellent temperature resistance and effective thermal and electrical insulation. The temperature they will be exposed to is the main factor determining the choice of tape. If it is lower than 700°C, we recommend a basalt fibre tape which is more cost-effective.
Aramid fibres such as Kevlar® are used to manufacture products with a very high traction resistance and a high elasticity modulus. Moreover, unlike most textile products, those made from aramid fibre have an excellent abrasion resistance. These products are particularly resistant to various hydrocarbons but are sensitive to acids and strong bases.
Show More >>
The main difference between these two solutions is the working temperature. Zetex is stable from 500 to 700°C, while silicate fibres can withstand temperatures up to 1,000–1,200°C.
Biosoluble fibre twisted ropes and braided ropes are soft, flexible, and compressible. They retain some of their elasticity after compression, but it depends on the pressure exerted. The recovery rate also depends on the type of reinforcement used. Final Advanced Materials offers biosoluble fibre twisted ropes and braided ropes with fibreglass or stainless-steel reinforcements for ovens operating up to 1,200°C.
The rope’s diameter depends on the size of the groove. As a general rule, the rope should be 10% to 20% wider than the groove to ensure effective compression. These values depend on the nature of the components.
Sleeves are tubes, usually flexible, designed to protect cables or electrical components from electricity, heat, and mechanical forces or impacts. Final Advanced Materials offers sleeves capable of withstanding temperatures up to 1,300°C in continuous service. For protection against radiant heat, Final Advanced Materials manufactures custom laminated sleeves using thin aluminium foils. This construction reflects up to 95% of radiation exchanges, thereby protecting cables from exposure to excessively high temperatures.
Few materials are suitable for exposure to contact temperatures over 1,200°C in continuous service, without radiation. Silica fibres, for example, are not stable during prolonged exposure. If you are seeking electrical insulation without the risk of deformation at such temperatures, ceramic fibre is the only viable solution. Other materials may also be suitable, depending on the duration and frequency of exposure, such as materials made of coated or uncoated glass fibres, basalt fibres, or silica fibres. However, these parts will need to be replaced regularly, and the replacement frequency will depend on the usage.
The primary downside of textile products is their low resistance to abrasion. To counteract this downside, Final Advanced Materials offers numerous treatments (silicone, PTFE) which improve this resistance. It should however be noted that these treatments can modify the sleeve’s behaviour when exposed to temperature.
Show More >>
Final Advanced Materials will use the following criteria to recommend the material best suited to your needs: temperature, pressure, and environment (gaseous, liquid).
If you are seeking a material with high compressibility (>40%) and excellent chemical resistance, graphite is the perfect solution for your needs. It is resistant to over 60 bars of pressure, 550°C in a normal atmosphere, and up to 3,000°C in an inert atmosphere.
However, if you are seeking a material which can resist temperatures ranging between 900–1,000°C in a normal atmosphere and 6 bars of pressure, mica will be a better option. It is both an effective electrical insulator (20 to 80 kV/mm) and an effective thermal insulator (≈ 0.3 to 0.7 W/m·K).
Expanded graphite gaskets have excellent thermal resistance. However, their temperature resistance depends heavily on the working environment.
In a non-oxidising atmosphere (vacuum or inert gases), expanded graphite can be used at temperatures of up to approximately 3,000°C. However, in the presence of oxygen (air) graphite is subject to oxidation, which lowers its maximum service temperature to around 450–500°C. Above this temperature, degradation will be accelerated.
Mica sheets have a good resistance to many solvents, oils and organic chemical agents, as well as high-temperature oxidising environments, making them particularly effective for extreme thermal applications.
However, their resistance is generally limited in the presence of strong bases and strong acids, which can attack the mica structure and degrade the gasket's mechanical properties.
In summary, mica gasket sheets have an excellent overall chemical resistance, especially in moderately acidic environments, but their compatibility depends on concentration or temperature.
Show More >>
You can contact the teams to request the safety data sheets (SDS) for adhesives and chemical powders offered by Final Advanced Materials at any time. Final Advanced Materials strives to provide up-to-date documents to ensure safe and compliant use of the industrial products. These documents ensure compliance with operating conditions and regulatory requirements in force.
The industrial products and adhesives offered by Final Advanced Materials are selected in compliance with European regulations, in particular the REACH and RoHS directives. These regulations regulate the use of chemical substances, limit the presence of hazardous substances, and ensure traceability of the components. The products are offered along with technical documents detailing their composition, their properties (working temperature, thermal conductivity, chemical resistance, etc.), and their compliance. This way, Final Advanced Materials ensures that the materials it offers meet the safety, environmental, and industrial compliance requirements.
Use of high-temperature materials requires that certain precautions are taken, depending on the application conditions. It is recommended to consider the working temperature, mechanical stress and chemical environment. Handling, cutting or installation may require specific precautions to limit exposure to dust or fibres.
Final Advanced Materials’ technical data sheets and SDS detail all the information required to ensure compliant and safe use of the materials.
Show More >>