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Sintered Metal Fiber Felt
Sintered Metal Fiber Felt
Sintered Metal Fiber Felt
Sintered Metal Fiber Felt
Sintered Metal Fiber Felt

Stainless steel fiber felt

Model No.: FGYB5101

Stainless steel fiber felt is a high-performance industrial material made of micro-scale stainless steel fibers through non-woven web formation, multi-layer lamination, and high-temperature sintering processes. With its unique three-dimensional porous structure, it has become the preferred precision filtration and special functional material in the global industrial field. The product is manufactured in strict compliance with international standards, featuring both durability and versatility, and is widely suitable for various high-end industrial scenarios worldwide.


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Sintered Metal Fiber Felt

Fibemas 316L Sintered Metal Fiber Felt is a porous metallic medium produced from micron-scale stainless steel fibers through non-woven web formation, multilayer lamination and high-temperature sintering. The bonded three-dimensional fiber network combines high porosity, good permeability and mechanical stability, making it suitable for demanding liquid and gas filtration processes.

Unlike woven wire mesh, which primarily captures particles on its surface, sintered metal fiber felt can retain contaminants throughout its porous depth. This structure increases dirt-holding capacity, slows the rise in differential pressure and supports longer operating cycles. Its all-metal construction also provides reliable performance in high-temperature, corrosive and vibration-prone environments.


Stainless steel fiber felt

Sintered Metal Fiber Felt Specifications

ParameterAvailable Specification
ModelFGYB5101
Raw Material100% 316L stainless steel fiber
Manufacturing ProcessNon-woven web formation, multilayer lamination and high-temperature sintering
StructureThree-dimensional porous fiber network
Porosity62%–88%
Air Permeability≥10–1,220 L/min·dm²
Bubble Point Pressure630–12,300 Pa
Working TemperatureUp to 600°C, depending on operating conditions and process medium
Reference Width1,000 mm
Reference Thickness4 mm or 6 mm
Reference Areal WeightApproximately 1,500 g/m²a
CustomizationWidth, length and areal weight can be customized
Filtration RatingSelected according to the required particle retention and flow conditions


How the Sintered Fiber Structure Works

Fine 316L stainless steel fibers are randomly laid into a web and laminated to form the required thickness and pore distribution. During sintering, contact points between the fibers are metallurgically bonded without converting the structure into a solid sheet.

The resulting pore network creates multiple flow paths through the material. Larger particles are retained near the upstream region, while smaller contaminants can be captured deeper inside the media. This depth-filtration mechanism offers several practical advantages:

  • Higher contaminant capacity than a single-layer woven metal mesh

  • High flow capacity at a relatively low pressure drop

  • Stable pore structure under vibration and fluctuating process conditions

  • Reduced risk of fiber migration

  • Longer filtration cycles before cleaning is required


How the Sintered Fiber Structure Works

Fine 316L stainless steel fibers are randomly laid into a web and laminated to form the required thickness and pore distribution. During sintering, contact points between the fibers are metallurgically bonded without converting the structure into a solid sheet.

The resulting pore network creates multiple flow paths through the material. Larger particles are retained near the upstream region, while smaller contaminants can be captured deeper inside the media. This depth-filtration mechanism offers several practical advantages:

  • Higher contaminant capacity than a single-layer woven metal mesh

  • High flow capacity at a relatively low pressure drop

  • Stable pore structure under vibration and fluctuating process conditions

  • Reduced risk of fiber migration

  • Longer filtration cycles before cleaning is required


Features of Sintered Metal Fiber Felt

Stainless steel fiber felt has five core advantages:

① High porosity and large specific surface area design, ensuring large dirt-holding capacity and high filtration precision with a filtration efficiency of over 99.9%;

② Excellent mechanical strength, high temperature resistance, corrosion resistance, and impact resistance, maintaining structural stability in extreme environments;

③ Outstanding air permeability, maintaining high flow rate under low pressure difference, resulting in lower operating energy consumption;

④ Reusable after cleaning and regeneration, with a service life 3-5 times that of traditional filter materials, reducing overall costs;

⑤ Uniform and dense structure, no risk of fiber shedding, suitable for the strict requirements of precision industrial scenarios.


Typical Applications of Sintered Metal Fiber Felt

ApplicationFiltration RequirementBenefit of Metal Fiber Felt
Polymer and viscose processingRemoval of gels, agglomerates and solid contaminants from viscous meltsHigh dirt capacity and good permeability
Petrochemical and refiningFiltration of process liquids, oils and corrosive mediaHeat resistance and 316L corrosion resistance
High-temperature gas filtrationRemoval of dust and particles from hot gas or exhaust streamsMetallic structure maintains stability at elevated temperatures
Hydraulic and lubrication systemsRemoval of particles that can damage pumps, valves and bearingsStable filtration performance under pressure fluctuations
Fuel filtrationFine particle removal from industrial, automotive, marine or aerospace fuelsGood mechanical strength and low fiber migration
Water and process-liquid treatmentSeparation of suspended solids from industrial liquidsReusable structure and controllable permeability
Catalyst and membrane supportPorous support or fluid-distribution layerUniform three-dimensional structure
Thermal, acoustic and shielding componentsHeat insulation, sound attenuation or conductive functional layersHeat-resistant and electrically conductive metal construction


Sintered Metal Fiber Felt vs Other Filter Media

Selection FactorSintered Metal Fiber FeltWoven Metal MeshPolymer Filter Felt
Filtration MechanismMainly depth filtrationMainly surface filtrationUsually depth filtration
Dirt-Holding CapacityHighRelatively limitedMedium to high
PermeabilityHigh for a given filtration areaHigh but dependent on mesh openingDepends on polymer and structure
Temperature ResistanceSuitable for elevated-temperature serviceHigh, depending on alloyGenerally more limited
Corrosion ResistanceGood with correctly selected alloyGood with correctly selected alloyDepends strongly on polymer
Mechanical StabilityStrong sintered fiber networkStable woven structureLower at high temperature
Cleaning and ReuseSuitable for regenerationUsually cleanableOften used as disposable media
Particle Shedding RiskLow with properly sintered constructionLowDepends on fiber and binder system



Custom Sintered Metal Fiber Felt

Fibemas supplies Sintered Metal Fiber Felt with customizable width, length and areal weight. To obtain an accurate recommendation and quotation, provide a sample, technical drawing or operating data together with your required annual quantity.

Custom requirements may include:

  • Width and length

  • Material thickness

  • Areal weight

  • Target porosity or permeability

  • Required particle-retention level

  • Operating temperature

  • Application medium

  • Packaging and delivery requirements


Selecting the Right Grade

The most suitable configuration cannot be selected from porosity alone. Before requesting a quotation, buyers should define the following operating conditions:

  1. Process medium: gas, water, oil, polymer melt, solvent or chemical liquid

  2. Required particle retention or micron rating

  3. Nominal or absolute filtration requirement

  4. Operating and peak temperature

  5. Normal flow rate

  6. Initial and maximum allowable differential pressure

  7. Chemical composition, concentration and pH

  8. Required width, length, thickness and areal weight

  9. Intended cleaning method and expected cleaning frequency

  10. Required test reports, material documentation or inspection criteria


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