• Porous Metal Sheet, Porous Stainless Steel Sheet

  • Porous Metal Sheet, Porous Stainless Steel Sheet

  • Porous Metal Sheet, Porous Stainless Steel Sheet

Porous Sintered Metal Square Plate

Jintai specializes in customizing porous metal square plates based on your applications and specifications. Utilizing proprietary manufacturing techniques, the filtration grade can reach as low as 0.1um. These plates can be tailored to meet various filtering, flow, and chemical compatibility requirements of your product or process. Parameters such as length, width, thickness, alloy, and media grade can be adjusted to fulfill your specific process needs.


High temperature and pressure resistance, high flow rate.

Good durability for most corrosive fluids.

Good air permeability and uniform pore distribution.

Stable shape, high strength of components.

High mechanical resistance.

Stable filtration accuracy even after multiple washings.

Backwashing support with low manual maintenance and cost.

Material selectionTitanium
Stainless steel: 316L, 304L, 310S, 321, 904L
Hastelloy C22 C276 X
Inconel 600
Monel 400
Other materials required by the customer
Filtration Grade0.1um 0.3um 0.5um 1um 3um 5um 10um 15um 20um 30um 50um 80um 100um
Other grade required by the customer
Data & SpecificationsSide length: The maximum can be 380mm
Thickness: Min. 1mm,  Max. 20mm
Other specifications and sizes required by customers

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Jintai's Porous Metal Sheet Solutions

At Jintai, we take pride in offering cutting-edge porous metal sheet solutions tailored to meet the diverse needs of our clients. Our porous metal sheets are meticulously designed and engineered to excel in a wide range of applications, ensuring optimal performance, durability, and efficiency.

Versatile Applications

Fuel Cells: Jintai's porous metal sheets play a crucial role in fuel cell applications, providing efficient gas diffusion and separation.

Gas Generation: Experience superior performance in gas generation processes with our advanced porous metal sheets.

Gas Storage: Our sheets contribute to reliable and effective gas storage solutions, ensuring stability and safety.

Filtration Excellence: Address diverse filtration needs with Jintai's porous metal sheets, offering precision and reliability.

Flow Control Mastery: Achieve unmatched flow control in various processes with our specialized porous metal sheets.

Porous metal stainless steel sheet

Porous stainless steel sheet is a type of stainless steel product that is widely used in various industries such as chemical, medical, and food processing due to its excellent corrosion resistance and high strength. As a manufacturer, we produce porous stainless steel sheet using a sintering process, which involves compacting stainless steel powder into the desired shape and then sintering it at high temperatures.

During the sintering process, the stainless steel powder particles are bonded together to form a solid structure with interconnected pores of controlled size and shape. The resulting porous stainless steel sheet has a high strength-to-weight ratio and can withstand high temperatures and harsh chemical environments.

Our porous stainless steel sheet can be customized to meet specific customer requirements, including pore size, pore distribution, and thickness. We can also produce porous stainless steel sheet with complex geometries, including cylindrical, conical, and flat shapes, to meet a wide range of applications.

To ensure the quality of our products, we perform rigorous testing on our porous stainless steel sheet, including pore size distribution analysis, compressive strength testing, and corrosion resistance testing. We also provide technical support and advice to our customers to help them optimize the performance of our porous stainless steel sheet in their specific applications.

As a manufacturer, we take pride in producing high-quality porous stainless steel sheet that meets the demanding requirements of our customers and contributes to their success.

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FAQ About Sintered Porous Metal Filter

How are sintered stainless steel sheets made?

The manufacture of sintered stainless steel is accomplished by powder sintering. This method is used to improve the structural integrity and strength of the steel metal powder. The sintering process of stainless steel undergoes the fusion of metal powders as well as other materials such as alloying elements. It is heat treated using a single furnace which is slender and has different temperature zones. The sintering temperature is mostly below the melting point of the material.

The sintering process of stainless steel sheets is divided into three stages:

First stage:

The material is heated in the furnace at a certain temperature so that a crystalline martensitic structure begins to form. Complete compaction does not occur because the sintering temperature is not very high in order to melt the particles. The integration of the material may eventually be accomplished in a number of ways.

These include the use of tools to compact the material into one piece, or the use of a laser capable of partially melting the powder in 3D form. The particles may also be joined by cold welding, which provides robust strength to the powder throughout the process.

Intermediate stage:

The density of the particles increases and they eventually merge. Some of the two related methods to achieve this are permanent sintering of the liquid phase and one of the transient liquids. If the sintered powder solid consists of iron, the liquid phase sintering process is used.

In this phase, the copper powder is mixed with the iron powder. At a known sintering temperature, the copper melts and then mixes with the iron, thus hardening the material into one piece. During the permanent phase process, liquid materials are added, such as cemented carbide. It then flows into some open pores and cracks to further bond the material.

Final phase:

Through the powder sintering phase, the original powder used for sintering eventually becomes solid. This is the final process of the liquid phase and is permanent for sintering. The binder and liquid additives flow into some open cracks and even pores to bond the filler in a successful manner.

What are the benefits of sintered stainless steel sheets?

High strength and toughness: During the sintering process, the stainless steel powder particles are tightly bonded to each other, which makes the sintered stainless steel sheet have high strength and toughness and can withstand certain impact and pressure.

Excellent corrosion resistance: Stainless steel itself has good corrosion resistance, and through sintering a uniform microporous structure can be formed, which further improves the corrosion resistance of stainless steel sheets.

Can be made into complex shapes: Through the sintering process, various complex shapes and pore sizes of stainless steel sheets can be made, which can meet the needs of different industries and applications.

Pore size and porosity can be adjusted: By adjusting the parameters of the sintering process, the pore size and porosity of the stainless steel sheet can be controlled to obtain the properties required for different applications such as filtration, separation and adsorption.

Can be recycled: Stainless steel sheets can be recycled and reused, reducing the waste of resources and conforming to the concept of sustainable development.

Are there any disadvantages of using sintered stainless steel sheets?

In an economic sense, the use of sintered stainless steel would be beneficial when considering mass production. This is due to the need to manufacture molds or dies to produce the sintered material.

Another factor that should be considered for sintered stainless steel is the high cost of purchasing the surprisingly large amount of powder used. However, with the mass production of powders and improvements in production methods, this limitation may be eliminated.

A third factor relates to the need for surprising powders to have high purity. This is critical for iron powders and their alloys. This is because their impurities in the surprising material may not be completely removed from the material that has been sintered after their production. This drawback is slowly being eliminated by mass production of the actual powder after atomization of the iron in the molten state. Known measures are used in the preservation and storage of the finished parts. This also applies to the intermediate products of porous sintered stainless steel sheets.

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Why use sintered stainless steel filters?

The first major application of sintering is the joining of metal particles into one.

In most cases, sintering is used in metals with high melting points because it is not dependent on reaching melting temperatures.

Some devices used for 3D printing sinter metals into a single layer at a time to provide a customized form of metal.

The act of sintering metals for 3D printing may help save energy.

That is, compared to melting the metal.

It also allows for more control and consistency because the material does not liquefy as a whole.

However, this may leave tiny gaps rather than the whole liquefaction that occurs when they are melted.

Sintering can also be used to reduce the porosity of surface objects.

This can enhance the performance of sintered stainless steel filters.

What are the applications of sintered stainless steel sheets?

The following are the main applications of sintered stainless steel sheets.

They are used as filters where liquids are separated from solids and gases; e.g. for retaining catalysts, fuel oil burner fuels, polymer processing, instruments, pressure regulators, medical drug delivery systems, filters for cryogenic fluids.

Fluid flow metering and pressure control; e.g. flow restrictors, calibrated leaks, pneumatic delays.

Fluid reservoirs; e.g. self-lubricating bearings, cooling devices, wicks, heat exchange elements.

Spark arrestors and S-arrestors for preventive handling of flammable gases. Examples include welding or electrical enclosures.

Attenuation and sound cancellation: e.g. silencers and pneumatic mufflers, microphone attenuators.

Injection and gas distribution: e.g. vacuum plates, air bearings, ozone injection and oxygen vapor extraction.

Media retention: e.g. as permeable barriers for desiccants, purifiers and aspirants.

What are the best metal grades for sintered stainless steel sheets?

The best metal grades are 304 and 316 for applications subject to aggressive corrosive conditions.

The 303 grade is for situations where you are focused on easy processing.

Can you machine sintered stainless steel plate?

Yes. Porous metal parts do have their best use when sintered.

How do you machine sintered stainless steel sheet?

The alternative to conventional machining requires electric discharge machining (EDM).

This is done to come up with special shapes.

As with conventional machining and laser cutting, acid etching is usually required to remove the surface.

It will be coated and reactivate the pores, and performing the correct EDM treatment may eventually leave the holes open, so only careful cleaning is required.

EDM processing is primarily used for prototype components.

This is because of the higher processing as well as the cost required for cleaning.

Cutting with the help of laser and mechanical processing may eventually become cheaper.

That is if you produce a large number of products and the surface pores do not need to be reactivated.

The act of machining a non-working area is mainly done without cooling it.

In addition, the parts to be passed through the machine should be cared for with hands free of oil.

It is important to add a part that has been processed by sintered bonding, adhesive bonding and welding.

What products can you manufacture from sintered stainless steel sheets?

Sintered stainless steel wire mesh

Sintered wire cloth filters

Sintered metal powder porous 3162

Perforated filter elements

316L stainless steel fibers, etc.

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Can you spot weld sintered stainless steel sheets?


Welding of sintered steel varies depending on the type of thickness and the finish of the material or the purpose of the finished product.

As with the many methods of welding stainless steel, there are three most common types used by welders in the United States.

The stainless steel welding methods are TIG welding, MIG welding and resistance welding (spot welding).

Spot or resistance welding is the most economical type.

In most cases, the same equipment is very versatile, which means it can be used on a large scale or on a small scale.

The method uses an electric current to heat the worn edges of the metal and then seals them together.

Spot welding is very effective on metal types that have a low melting point, as it can be sheared to prevent it from deforming.

What are the popular sizes of sintered stainless steel sheets?

The popular sizes are 314 and 304 types.

What is the maximum number of holes you can punch in a sintered stainless steel sheet?

The rule of thumb states that the diameter of the hole to be punched should not be smaller than the gauge of the plate to be punched.

As the tensile strength of the material increases, it is recommended that the diameter of the punch range from the gauge thickness to 1.5 times the gauge thickness.

That is, the thickness of the sheet metal gauge you want to punch.

How do you specify a porous sintered stainless steel plate?

To specify a porous sintered stainless steel plate, you need to have the following information.

You should know the application (fluidization, filtration, gas dispersion in liquids)

A. The material to be passed

B. Corrosion issues

C. Special operating conditions involving pressure, temperature, etc.

D. Contaminants encountered

E. The shape, dimensions and tolerances required

F. How it should be supported

G. The required flow rate and pressure allowed by the filter unit.

What are the important design advantages of porous sintered stainless steel parts?

1. Performance.

A. They are high strength, corrosion resistant and durable, elements of each powder base metal.

B. They have controlled porosity to achieve a given filtration performance.

C. They have controlled permeability to achieve flow specifications.

D. They have a wide range of designs to filter particles

E. They flow from small leaks to large volumes.

F. They achieve rigidity, impact resistance and ease of cleaning.

2. Their availability.

A. They are derived from commercially available metal powders.

B. They are typically supplied by experienced metal manufacturers worldwide.

C. They are manufactured in a variety of sizes and shapes.

3. Cost.

A. They have proven mass production techniques.

B. Most of their parts are well suited for automatic assembly.

C. Tight dimensional control can be achieved with them.

D. The design of the net feature shape eliminates the need for major machining and the loss of scrap.

There is a wide variety of porous metal materials; some of the major porous materials are derived from stainless steel.

Industry standards exist for density, pore size and permeability.

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What is axial compaction in the manufacturing process of sintered stainless steel?

It is a manufacturing method in which metal powders are confined within a mold under appropriate pressure.

In other words, the powder particles are connected at different contact points with the appropriate strength to the part to be treated after being sprayed.

The "raw" strength of this part is related to the properties of the metal powder (particle size, composition, purity, shape, etc.) and the molding pressure.

Porous parts of metals are different from known structural parts.

Because they are pressed at a lower pressure than the former, they can tighten the mesh powder cut and thus achieve a given requirement for porosity.

After forming is complete, the raw parts are eventually heated and even sintered at temperature and pressure.

You should keep these parameters below the melting point of the particular metal.

However, the conditions must be sufficient to bind the particles together and therefore increase the strength of the part.

Stainless steel is mostly processed in this way.

Advantages include high porosity, well-controlled permeability; and correct dimensional reproducibility.

How do you fabricate sintered stainless steel by gravity technology?

Gravity, also known as loose powder technology, is used to fabricate metal porous parts from powders that can be easily diffusion bonded.

Most products usually come from bronze.

At this stage, there is no external pressure to shape the part.

The correct material, molded to size, is placed into the cavity of the mold, which is some of the voids in the shape of the finished part.

In addition, the metal particles are then heated to sintering temperature at the point where bonding occurs.

A joint neck is formed at the point of contact.

When considering this process, the design engineer responsible must visualize the final shape completely enclosed by the mold.

At the same time, the top access hole is omitted, allowing the cavity to be filled with powder.

This is done when considering gravity sintering.

The already formed shape can be easily extracted from the mold after sintering and must also be visualized.

In a general sense, an extraction of 1 degree on the side of the part is sufficient to remove it from the mold.

Although the rule of thumb depends on the filling depth and material grade.

How do you manufacture sintered stainless steel sheets using the spray technique?

With this technique, metal powders may be the start of the structure.

They are porous and are created by passing molten metal onto some substrate, while achieving control of porosity.

That is, by spraying or co-spraying some other material with conditions that may be removed later.

What are the characteristics of Type 316L sintered stainless steel sheet?

Typical composition is: 18% Cr, 13% Ni, 2% Mo, 1% Si, 0.03% max C.

Porous parts are specified within the stainless steel so that they can take special advantage of the metal's corrosion and heat resistance.

From a manufacturing point of view, stainless steel is used.

From a commercial standpoint, of the range of sizes required to manufacture porous metal parts, only Type 316L is available to match the known types.

Type 316 L powders with high nickel and molybdenum content are more resistant to corrosion than standard types.

In addition, made from Type 316L

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Typical Application