FILTALLOY

TECHNOLOGY LTD.

Metal Filter Elements & Materials

Sintered Mesh Filter Elements

Sintered mesh filter elements use diffusion-bonded layers of metal wire mesh as the filtration medium. The filtration layer, protective layers and support layers can be configured for a disc, panel or cylindrical element according to the application. The number and arrangement of layers vary by design.

Share the medium, particle target, flow, allowable pressure drop, installation dimensions and cleaning method. We can then review the mesh structure, material, connection and checks for a manufacturable element. A filter medium’s nominal rating does not by itself establish the finished element’s retention efficiency or operating pressure drop.

Product advantages and operating limits

  • Diffusion-bonded layers provide a stable filtering surface and supporting structure suited to the specified element design.
  • Filter, protection and support layers can be configured to the filtration target and forming method.
  • A differential pressure capability of up to 3000 PSI may apply to a suitable specified design; verify material, layer structure, size, support, welds, connection and pressure direction for the exact element.
  • A temperature of up to 480°C may apply to a suitable specified design; verify alloy, medium, atmosphere, connection and duration for the exact duty.
  • Material options can be reviewed for corrosive process media. Compatibility with seawater or other aggressive media is not a universal property of this product family.
  • Depending on the contaminant and construction, some elements can be cleaned by a suitable method, including backwashing or other agreed procedures. A cleaning system, rather than the filter medium alone, determines whether automatic cleaning is possible.

Application areas

Examples to discuss include pharmaceutical process filtration and catalyst recovery; polymer, pigment and monomer processing; chemical process streams such as herbicides, pesticides, chromatography frits and resin traps; LNG gas and petroleum processing; circulating coolant, coal processing, wastewater treatment, and pulp and paper process streams. Suitability must be confirmed against the actual process medium, material, construction, cleaning and applicable quality requirements. Industry examples do not certify every element for every application.

Sintered wire mesh filter element pictured on product page

Dimensions and specification review

Available designs include sintered mesh discs, panels and cylindrical cartridges. Define the filtration requirement and test method, medium and temperature, flow and allowable pressure drop, outside dimensions, mating features, connections and cleaning plan. Metal grade, layer arrangement, thickness and final geometry are confirmed for the specific product.

The older catalog figures for rating, maximum pressure and temperature are not stated as universal specifications here. Contact us with a drawing, sample or operating conditions for a project-specific specification.

Top view diagram of five-layer sintered wire mesh

Top view of a five-layer sintered wire mesh example. The layer arrangement shown is illustrative, not the structure of every element.

Cross-section diagram of five-layer sintered wire mesh

Cross-section of a five-layer sintered wire mesh example showing filtration and support layers.

Original specification tables

The three existing specification tables below remain as published product reference data. Please specify the model and measurement conditions when requesting a confirmed element specification; figures from a material table must not be treated automatically as finished-cartridge performance.

Standard Sintered Wire Mesh Data Sheet of Five-Layer Sintered Mesh
ModelNominal RatingStructureThicknessAir PermeabilityBubble Point Pressure
μmmml/min/cm2mmH20
SMF5-11200+400×3000+200+12×64+64×121.71.81360-600
SMF5-22100+325×2300+100+12×64+64×121.72.35300-590
SMF5-55100+200×1400+100+12×64+64×121.72.42260-550
SMF5-1010100+165×1400+100+12×64+64×121.73220-500
SMF5-1515100+165×1200+100+12×64+64×121.73.41200-480
SMF5-2020100+165×800+100+12×64+64×121.74.5170-450
SMF5-2525100+165×600+100+12×64+64×121.76.12150-410
SMF5-3030100+400+100+12×64+64×121.76.7120-390
SMF5-4040100+325+100+12×64+64×121.76.86100-350
SMF5-5050100+250+100+12×64+64×121.78.4190-300
SMF-7575100+200+100+12×64+64×121.78.780-250
SMF5-100100100+150+100+12×64+64×121.79.170-190
Note: Weight kg/m2, 5 layers sintered 8.4kg; 6 layers sintered 14.4kg
6 layers sintered mesh with another layer of 12 mesh to resist high pressure. Thichkess reaches 3.5mm
Data Sheet of 2-7 Layers Sintered Wire Cloth
ItemFilter rating(um)Structure (mesh /inch)Thickness
(mm)
Porosity (%)Weight
(kg/m2)
SMF2-T0.52-100Filter layer+60 0.5601.6
SMF3-T0.72-10060 +Filter layer+60 0.7562.4
SMF3-T1.02-20050 +Filter layer+20 1.0 583.3
SMF3-T2.02-200Filter layer+20+82.0586.5
SMF4-T1.02-20060+Filter layer+40+20 1.0454.4
SMF4-T1.72-20040 +Filter layer +20 +16 1.7556.2
SMF5-T1.92-20030 +Filter layer+ 60 +20 +16 1.9525.3
SMF5-T2.52-20080 +Filter layer +30 +10 +8 2.5558.8
SMF7-T2.02-20050 +filter layer+ 40 +20 +40 +filter layer+50 2.0587.4
Note: 1. Filter layer could be customized according to your demand.
Other layer structures could be adjusted based on your specific requirement.
Technical Data Sheet of Sintered wire cloth and Perforeated Plate
ModelFilter Rating
(μm)
StructureThickness
(mm)
Weight
(kg/m²)
Porosity
(%)
SMF-T22-20030 +filter layer +30 +D4×P5×T1.026.757
SMF-T2.52-20030 +filter layer +30 +D5×P7×T1.52.59.850
SMF5-T32-20060 +filter layer +60 +20 +D6×P8×T2.0311.950
SMF5-T3.52-20020 +filter layer +20 +10 +D8×P10×T2.03.512.654
SMF5-T4.02-20020 +filter layer +20 +10 +D8×P10×T2.5414.255
SMF5-T4.32-20020 +filter layer +20 +10+D10×P13×T3.04.316.850
SMF5-T5.32-20020 +filter layer +20 +10+D10×P13×T3.05.320.651
Note: Other structures could also be customized
It’s suitable for higher differential pressure drop application.

Manufacturing Process Illustrations

These process illustrations show joining steps for cylindrical metal mesh filter elements. Weld placement and connection geometry are reviewed against the finished-element drawing; the images do not establish a filtration rating or weld qualification.

Illustration of welding the end ring of a sintered mesh filter cylinder with a support grid

End-ring welding on a cylindrical sintered mesh filter element.

Illustration of welding a longitudinal seam on a metal mesh filter cylinder

Longitudinal seam welding on a metal mesh filter cylinder.

Illustration of welding a threaded end fitting to a sintered mesh filter cylinder

Threaded end fitting welded to a cylindrical sintered mesh filter.

Close-up illustration of welding a curved metal mesh filter cylinder seam

Close-up seam welding on a curved metal mesh filter cylinder.

Round sintered wire mesh filter discs

SMF-1: Round sintered mesh filter discs; choose mesh and dimensions for the required duty.

Shaped sintered mesh filter panel

SMF-2: Shaped sintered mesh panel; confirm material and cut geometry against the drawing.

Cylindrical sintered mesh filter cartridge

SMF-3: Cylindrical sintered mesh element with an outer fine mesh layer.

Laminated sintered wire mesh tube

SMF-4: Laminated sintered mesh tube. Rating and application are confirmed per order.

Sintered metal filter elements for equipment fluid filtration

SMF-5: Cylindrical sintered mesh element with a supported structure.

Sintered mesh element with perforated support layer

SMF-6: Sintered mesh element with perforated support layer.

Sintered mesh filter elements

SMF-7: Sintered mesh element shown with a cleaning-related assembly; cleaning performance requires a defined system.

Three sintered metal filter elements shown together

SMF-8: The sintered metal filter elements in three different sizes together used as gas turbine oil filter

Sintered mesh filter with long male thread

SMF-9: Cylindrical sintered mesh filter with long male threaded connection.

Sintered mesh filter element with short male thread

SMF-10: Sintered mesh filter element with short male threaded connection.

Sintered mesh filter element with hexagonal connector

SMF-11: Sintered mesh filter elements with hexagonal connectors

Sintered mesh filter element with perforated support

SMF-12: Sintered mesh filter element with perforated support structure.

Manufacturing and inspection

After confirming the mesh structure and element drawing, the material is formed or cut and joined to the required ends, supports or connections. Inspection focuses on dimensions, surface condition, cut edges, welds, fittings and sealing faces.

The microscope image at right shows one inspection method. If a project specifies flow, permeability, bubble point or retention testing, the sample, method and test conditions should be agreed in advance. This photograph alone does not establish filtration rating.

Information to send with an inquiry

  • Drawing or photograph of the existing element
  • Material and process medium
  • Normal and peak temperature
  • Target particle size or rating, and required test method
  • Flow rate and allowable pressure drop
  • Element dimensions, sealing faces and connections
  • Cleaning method
  • Quantity
  • If replacing a failed element: clogging, deformation, leakage or shortened service life
Microscope with a screen displaying a magnified metal mesh surface

Microscope and screen used to examine a mesh surface; the image alone does not establish filtration rating.

Frequently asked questions

Can a disc rating be used as the guaranteed rating of a finished cartridge?

Not automatically. Define the medium, construction and test method before comparing finished elements.

Can you work from an existing cartridge?

Yes. A drawing, sample or clear dimensions can support an assessment of the mating geometry and construction.

Can the element be backwashed and reused?

That depends on the structure, pressure direction, contamination and cleaning medium. Confirm the procedure and inspect the element after cleaning.

How do I select material and mesh rating?

Provide the process medium, temperature, particle target, flow and allowable pressure drop. Material name or mesh count alone is insufficient.

Discuss Your Filtration Requirements

Choose the path that matches your project:

Custom Design for a New Project

For a new filtration application, discuss the operating conditions and required finished product with us. Provide the process medium and particles, target filtration rating and test method, flow, temperature, pressure, allowable pressure drop, installation space and cleaning method. We can work through the sintered mesh layer structure, material, element shape, support and connections, then agree on drawings, samples and checks before production.

Build to Drawing for Replacement

To replace an existing filter element when you have drawings or specification data, send the drawings, dimensions and tolerances, material, filtration rating, layer structure if specified, connections and relevant operating conditions. We will review the requirements and manufacture the replacement to the agreed drawing and specification.

Recreate from an Existing Sample

If you have no drawing or complete data, send us an existing filter element. We can measure its dimensions, inspect its mesh construction, support and connections, and document the specifications that can be recovered. We will confirm any uncertain material or performance requirements with you before reproducing the element; a used sample alone may not establish its original filtration rating.

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