Kaifil supplies stainless steel sintered fiber felt for pleated cartridges and porous filter components. The 0.5 mm sheet series combines 5–60 µm filtration grades with a porous metal-fiber structure.
Sintered metal filters and mediaShare a drawing, reference sample or application requirements to discuss the configuration.
Metal fiber felt sheets — Product view
| Parameter | Specification | Notes |
|---|---|---|
| Filter medium | Sintered stainless steel fiber felt | — |
| Filtration grades | 5 / 7 / 10 / 15 / 20 / 25 / 30 / 40 / 60 µm | — |
| Series thickness | 0.5 mm | — |
| Porosity | 75–79 % | Each grade has its own porosity in the structure table. |
| Stainless steel grades | 304 / 316L | — |
| Air-permeability test differential | 200 Pa | Test medium: air. |
| Supply forms | Sheets / cut blanks / pleated media | — |
| Support construction | Bare felt / mesh-supported felt | — |
Materials: 304 / 316L stainless steel; Inconel; Hastelloy; FeCrAl
Fine stainless steel fibers form a porous nonwoven web. Sintering bonds the fiber contacts and gives the sheet a connected three-dimensional pore structure. Particles are captured through the fiber network, while the interconnected voids provide flow paths and space for collected solids. The material is used as flat media or formed into pleated filter elements.
The selected series keeps sheet thickness at 0.5 mm across nine filtration grades. The tables pair every grade with its air permeability, porosity and dirt-holding capacity. Air permeability uses air at a 200 Pa pressure difference. This gives buyers a consistent basis for comparing the flow and solids-capacity characteristics of the grades within this series.
Pleating increases active area inside a cartridge envelope. Pleat height, spacing and count work together with an inner core and outer support to preserve drainage channels. Mesh-supported felt provides additional handling support during conversion. Mark the working face, cutting direction, seam width and end-cap joining area on the element drawing.
Start with the solids size and target retention, then add fluid viscosity, flow and available housing space. A higher solids load calls for an appropriate combination of medium grade and filtration area. For reusable elements, select cleaning chemistry and backwash conditions together with the support and joints. Measure recovery at the same clean-flow conditions after each cleaning cycle.
The nonwoven fiber network is the filtering medium. A protective wire mesh adds handling support while retaining a separate role from the felt. Define which face carries the support, the flow direction and the final composite thickness. The 0.5 mm performance tables describe the stainless felt series; added mesh and finished pleats receive their own assembly dimensions.
Cut size defines the material blank. Pleat height, pitch and count define the developed surface inside the finished cartridge. The core and outer support preserve channels between pleats; the longitudinal seam and end seals close the filtration boundary. Keep fiber alloy, protective-mesh alloy, core and fittings as separate entries in the component specification.
Inconel and Hastelloy fiber felts form separate alloy options. FeCrAl felt is made from iron–chromium–aluminium fibers for burner, exhaust and hot-gas applications. Each alloy branch has its own fiber and support specification. The stainless 0.5 mm permeability and capacity series stays with its stated material construction.
The 0.5 mm series is compared using air at a differential pressure of 200 Pa.
| Filtration grade (µm) | Thickness (mm) | Air permeability (L/min/dm²) |
|---|---|---|
| 5 | 0.5 | 35 |
| 7 | 0.5 | 55 |
| 10 | 0.5 | 100 |
| 15 | 0.5 | 140 |
| 20 | 0.5 | 260 |
| 25 | 0.5 | 320 |
| 30 | 0.5 | 480 |
| 40 | 0.5 | 650 |
| 60 | 0.5 | 1100 |
Use the same filtration grade to connect each row to the flow table.
| Filtration grade (µm) | Porosity (%) | Dirt-holding capacity (mg/cm²) |
|---|---|---|
| 5 | 75 | 5 |
| 7 | 75 | 6 |
| 10 | 79 | 7 |
| 15 | 78 | 9 |
| 20 | 77 | 15 |
| 25 | 76 | 21 |
| 30 | 75 | 26 |
| 40 | 77 | 35 |
| 60 | 77 | 38 |
| Construction | Layer definition | Conversion route |
|---|---|---|
| Bare felt | Sintered fiber web with its two faces identified | Flat blanks, discs and supported element fabrication. |
| Single protective mesh | Felt combined with a protective woven layer on one face | Identify the mesh face on the cutting and pleating drawing. |
| Two protective meshes | Felt between protective woven layers on both faces | Specify both mesh grades, composite thickness and seam margin. |
| Supply item | Order basis |
|---|---|
| Production lead time | 2–3 weeks after order and drawing confirmation. |
| Trial orders | Small trial quantities for fit and process evaluation. |
| Regular material orders | Quantity follows the selected roll, sheet or cut-length format; US$3,000 regular order value. |
| Quotation basis | Alloy, media construction, wire or stock thickness, delivery format and quantity. |
Include these details when discussing your requirements.
Porous felt adds active filtration area through a compact pleat structure.
Metal-fiber media captures particles and gels in a supported melt-filter element.
Sheet and cylindrical constructions provide reusable porous media for equipment integration.
Fiber felt uses a nonwoven depth structure. Sintered wire mesh uses defined woven layers bonded into a laminate.
Thickness is the sheet dimension. Filtration grade describes the media rating; this series provides nine grades at the same 0.5 mm thickness.
It expresses retained contaminant mass per unit filter area. Use it alongside permeability and the selected filtration grade when comparing the series.
Provide finished diameter and length, pleat height and count, support arrangement, seam, end fittings and cleaning direction.
Explore related products and technical guidance.
Define the dimensions, media, joints and inspection records before confirming the order.
