Factors to Consider When Choosing a Sintered Porous Metal Filter

26 May.,2025

 

Factors to Consider When Choosing a Sintered Porous Metal Filter

Sintered porous metal filters are widely used across various industries for their durability, high-temperature resistance, and ability to withstand corrosive environments. They provide excellent filtration efficiency, making them ideal for applications in the chemical, pharmaceutical, and food and beverage industries. However, choosing the right sintered porous metal filter requires careful consideration of several factors to ensure optimal performance and longevity. This article will explore the key factors to keep in mind when selecting a sintered porous metal filter.

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Filtration Efficiency and Pore Size

One of the most critical aspects of a sintered porous metal filter is its filtration efficiency, which is largely determined by the pore size. The pore size must be selected based on the size of the particles that need to be filtered out of the process stream. Filters with smaller pore sizes can capture finer particles but may result in higher pressure drops and reduced flow rates. Conversely, filters with larger pore sizes may allow higher flow rates but could compromise filtration efficiency. It is essential to strike the right balance between pore size and filtration efficiency to achieve the desired results for your specific application.

Material Compatibility

Sintered porous metal filters are available in various materials, including stainless steel, bronze, nickel, and titanium. Each material offers different properties in terms of chemical resistance, mechanical strength, and temperature tolerance. For example, stainless steel filters are highly resistant to corrosion and oxidation, making them suitable for harsh environments. Bronze filters, on the other hand, offer good corrosion resistance at a lower cost but may not be suitable for highly acidic or alkaline conditions. Choosing a filter material that is compatible with the fluids or gases being filtered is crucial to ensuring the longevity and performance of the filter.

Operating Temperature and Pressure

The operating conditions of your process, including temperature and pressure, are also crucial factors to consider. Sintered porous metal filters are known for their ability to withstand high temperatures and pressures, but each material has its own limitations. For instance, stainless steel filters can generally withstand temperatures up to 600°C, while nickel-based filters can operate at even higher temperatures. Similarly, the pressure rating of the filter must match the operating pressure of the system to prevent filter failure. Always ensure that the chosen filter can handle the maximum temperature and pressure requirements of your application.

Flow Rate and Pressure Drop

Flow rate and pressure drop are interrelated parameters that significantly impact the performance of a sintered porous metal filter. A high flow rate is desirable for efficient processing, but it can lead to a higher pressure drop, which may reduce the efficiency of the filtration system. Conversely, a lower pressure drop can maintain system efficiency but may limit the achievable flow rate. When selecting a filter, it is essential to consider the desired flow rate and permissible pressure drop to ensure that the filter meets the operational requirements without compromising performance.

Cleaning and Maintenance Requirements

One of the advantages of sintered porous metal filters is their ability to be cleaned and reused, which can significantly reduce operating costs. However, different filters have varying cleaning requirements based on their material and design. Some filters can be cleaned using simple backwashing or ultrasonic cleaning, while others may require more specialized cleaning methods. Understanding the cleaning and maintenance requirements of the filter is essential for minimizing downtime and ensuring consistent performance over time.

Regulatory and Quality Standards

In industries such as pharmaceuticals and food and beverage, filters must comply with specific regulatory and quality standards to ensure product safety and quality. It is important to choose a filter that meets the relevant standards for your industry. For example, filters used in food processing must comply with FDA regulations, while those used in pharmaceuticals should meet ISO standards. Ensuring that the filter meets these standards will help in achieving regulatory compliance and maintaining product quality.

Conclusion

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Diffusion Bonded / Sintered Metal Filter

SinterPore™ Sintered Metal Filter

Porous Metal Filters offers a full line of diffusion bonded sintered wire cloth and sintered wire mesh sintered metal filter products under the brand SinterPore™.

Sintered Metal Mesh is a wire filtering cloth made by pressing multi-layer stainless steel woven wire cloth, then sintered together in a vacuum furnace. This kind of filtering cloth is much better than common metal woven wire mesh with good strength, hardness and good positioning of opening. Its comprehensive property is superior to sintered metal powder and porcelain.

Sheet Sintering or true diffusion bonding, is a process that utilizes time, temperature, pressure and atmosphere to realign and permanently bond the molecular elements of the alloy where they intersect or touch each other. This product is available in single or multiple layer construction. The process produces a stable, secure mesh that can be used for filtering in high pressure applications.

SinterPore™ Sintered Metal Mesh provides many additional benefits when compared to traditional wire cloth.
  • Diffusion bonded wire cloth can be fabricated in single or multiple layers. Multiple layer assemblies provide enhanced mechanical properties for filters and harsh environment applications.
  • Sintered wire mesh is stable, making it ideal for mesh with a high percentage of open area or that requires a secure pore size.
  • SinterPore™ sintered mesh is easy to fabricate and produces a stable, strong product. It can be constructed as a depth filter media, providing excellent filtration properties. It is an excellent material to use for products that require controlled permeability.
  • Sintered wire mesh can be cleaned and re-used for many applications.
  • Diffusion bonding locks and secures all wire in the mesh, eliminating loose wires and increasing the stability of the cloth. It can be used for small parts and special shapes without losing shape or loose wires. Traditional wire cloth can become loose and ineffective over time.

SinterPore™ sintered metal filter wire mesh is available in a wide range of micron ratings, mechanical properties and alloys. The standard product is available in 24” x 48” sheets produced from 316LSS stainless steel. Many other alloys are and sizes are available up to 48” x 55”.

We offer several standard series of SinterPore™ wire mesh laminates.

  • Single Layer Series                             (SL Series)
  • Filter Plate Series                               (FP Series)
  • High Flow                                            (HF Series)
  • Perforated + Mesh Series                (PM Series)
  • Custom Laminates                            (CL Series)

In addition to our standard products, we offer custom weaves, a wide range of alloys and materials and layering configurations to provide you with a product that meets your exact specifications.

SL Series: (Single Layer Mesh Series)

Ensures that all warp and shute wires are locked securely. It also allows for easy in deep drawing and forming.
Standard sheet size is 24” x 48”.
Mesh Layers: 1

FP Series (Filter Plate Series)

Our filter plate series is used in many applications that require a robust and strong filter media. Nominal filter ratings from 1 micron to 100 are available.

Standard Sheet Size: 24” x 48”.

Number of Layers: 5 layers.

Common Construction: Protection / Filter / Drainage / Support Structure / Support Structure

wdt_ID Nominal Micron Lay Up Structure Laminate Thickness Air Permeability 1 2 100/325X/100/12X64/12X64 0.066 19.00 2 5 100/200X/100/12X64/12X64 0.066 25.00 3 10 100/165X/100/12X64/12X64 0.066 45.00 4 20 100/165X800/100/12X64/12X64 0.066 70.00 5 25 100/80x700/100/12X64/12X64 0.066 34.00 6 40 100/325/100/12X64/12X64 0.066 124.00 7 60 100/250/100/12X64/12X64 0.066 119.00 8 75 100/200/100/12x64/12x64 0.066 132.00 9 100 100/150/100/12X64/12X64 0.066 119.00
HF Series: (High Flow Series)

Our high-flow filter plate are the ideal media when high flow and robust construction are required. This series offers a wide range of options in support and drainage mesh.

Nominal filter ratings from 2 – 500 microns are available.

Standard Sheet Size: 24” x 48”.

Number of Layers: 2 layers, 3 Layers, 4 Layers, 5 Layers

2 Layer Common Construction: Protection / Filter:    The protection layer is normally a plain or twill weave. Filter layer can generally be almost any mesh construction or weave pattern.

3 Layer Common Construction: Protection / Filter / Support:    The protection layer is normally a plain or twill weave. Filter layer can be almost any mesh construction and the support layer is normally a plain weave. This construction provides a media that is easy to clean.

4 Layer Common Construction: Protection / Filter / Drainage / Support: :    The protection layer is normally a plain weave. Filter layer can be almost any mesh construction or weave pattern. The drainage layer is normally a plain weave with a high percent of open area. The support layer is normally a plain weave.

5 Layer Common Construction: Protection / Filter / Drainage / Support /Heavy Support:    The protection layer is normally a plain weave. Filter layer can be almost any mesh construction or weave pattern. The drainage layer is normally a plain weave with a high percent of open area. The first support layer is normally a plain weave and the heavy support layer can have a wire diameter of .020” or larger.

PM Series: (Perforated Plate + Mesh Series)

Super robust media that incorporates woven wire cloth and perforated plate. This media has very high compressive and mechanical strength. Many designs can have safe margins designed into the panel (non-perforated area) to aid in fabrication and handling.

Nominal filter ratings from 5 – 200 microns are available.

The company is the world’s best sinter filter supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.

Standard Sheet Size: 24” x 48” (Custom sizes available).

Number of Layers: 2 layers, 3 Layers, 4 Layers, 5 Layers.

3 Layer Common Construction: Filter / Drainage / Perforated Plate:    Filter layer is exposed and can be almost any mesh pattern. Drainage layer is normally a plain weave. The perforated support layer is normally at least 35% or greater open area.

4 Layer Common Construction: Protection / Filter / Drainage / Perforated Plate:    The protection layer is normally a high open area plain weave. Filter layer can be almost any mesh construction or weave pattern. The drainage layer is normally a plain weave with a high percent of open area. The support layer is normally a plain weave.

CL Series: (Custom Layer Laminates)

Custom diffusion bonded laminates have endless design possibilities. We can design sintered wire cloth laminates to fit your application and optimize your process. Sintered metallic fiber felt can be incorporated into our wire mesh laminates.

Nominal filter ratings from 5 – microns are available.

Standard Sheet Size: 24” x 48” (Custom sizes available).

Number of Layers: 2 – 200 or more layers of wire cloth.

Definition of Sintered or Diffusion Bonded Wire Mesh:

Stainless Steel Sintered Wire Mesh is a filtering cloth made by pressing multi-layer woven wire cloth, then sintered together in a vacuum furnace. This kind of filtering cloth is much better than common metal woven wire mesh with good strength, hardness and good positioning of opening. Its comprehensive property is superior to sintered metal powder and porcelain. The major characteristics are: excellent strength, no inner support is required for making filter elements, no material, easily repeated cleaning, long lifespan and good anti-corrosion.

What Are Sintered Mesh Laminates?

Fine woven wire filter mesh provides micron-rated pore size but it is too thin and can be damaged. The best solution is to laminate the fine mesh to a coarser mesh supportive layer to provide increased strength and thickness. The common sintered wire mesh laminates are 5-layer or 6-layer, which is extensively used in filtration.

Diffusion Bonded Filter Elements

DWT produces a wide range of filter elements utilizing sintered wire cloth. Sintered Wire Mesh elements have many advantages over standard filter elements.

Sintered Metal Filter Elements Advantages

  • Many elements can be cleaned and used multiple times.
  • Sintered Wire Cloth elements are much stronger than non-sintered elements.
  • Sintered elements have a stable pore geometry that is ideally suited for back flush filtration systems.
  • Available in a wide range of alloys. Most common is 316Lss and 304Lss.
  • Sintered Mesh Elements are available in a wire range of micron ratings (5 to micron) and can be custom designed to meet or exceed your filtration and performance requirements.
  • Sintered Metal Filters are commonly used in Hot Gas Filtration, Polymer Filtration and Oil & Gas Filtration.

All of our Sintered Metal Filters are available in a wide range of micron ratings and alloys. In almost all cases, sintered metal filters can be cleaned multiple times. Contact us today for a detailed quote or if you have any questions about our diffusion bonded sintered wire cloth capabilities.

Sintered Metal Filter Wire Cloth Alloys

304 Stainless Steel Sintered Wire Cloth

Most common stainless alloy used in wire weaving. Excellent corrosion properties and can withstand temperatures of Degrees F.

304L Stainless Steel Sintered Wire Cloth

Similar properties as 304ss but lower carbon content to permit better welding.

316SS Stainless Steel Sintered Wire Cloth

Similar properties to 304ss but is stabilized by the addition of Molybdenum for increased resistance to chemical corrosion.

316L Stainless Steel Sintered Wire Cloth

Similar properties as 316ss but lower carbon content to permit better welding.

904L Stainless Steel Sintered Wire Cloth

Hight resistance to corrosion and rust for sea water applications.

Nickel 200 Sintered Wire Cloth

Used in applications where high corrosion properties are required. Some applications could include several chemicals, caustics, and certain organic acids.

Monel 400 Sintered Wire Cloth

One of the most widely used alloys for high corrosion resistance. Used in many food and chemical processes. Monel is a registered trade mark for International Nickel Co INCO.

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