316L Stainless Steel

SS Sintered Powder Filter Element

316L SS powder, vacuum-sintered into a rigid, uniform-pore structure. Bubble-point test data available on request per ASTM F316.

0.22–100 µmFilter rating
400 °CMax operating temp
≈ 0.6 MPaMax pressure (typical)
CoCTest data on request
Filter Cartridge

SS Sintered Powder Filter Element

A sintered stainless steel filter cartridge made by isostatic pressing of 316L powder, then vacuum sintered at high temperature. No binder, no adhesive — the result is an all-metal rigid structure with interconnected pores through the entire wall thickness.
Material
316L Stainless Steel (304, 304L, 310S on request)
Filter rating
0.22 – 100 µm
Porosity
30 – 45%
Max pressure
≈ 0.6 MPa typical (wall-thickness dependent)
Max temperature
400 °C max (not recommended above)
Standard
GB/T 6886-2008

Select cleaning chemistry, temperature and reverse-flow pressure for the material and deposited contaminants. Reuse depends on inspection and agreed performance checks after cleaning; unchanged structure or unlimited regeneration is not guaranteed.

A polished outer surface is available on customer request. The smooth finish reduces particle adhesion on the cartridge exterior, extending the interval between cleanings and making visual inspection easier — particularly useful in pharmaceutical production and hygienic process environments.

End connections are supplied in all standard types to suit the housing: DOE (double open end), 222/226 O-ring quick-connect, M20 or M30 threaded end, 1″ NPT, and fin-end configurations — all to customer specification.

SS sintered powder filter elements with smooth polished outer surface and threaded end connections
Technical Specifications

SS Sintered Powder Filter Element — Full Specification

Properties & Performance
Material
316L SS powder (304/304L/310S on request)
Filter rating
0.22 – 100 µm
Porosity
30 – 45%
Permeability
3 – 1,300 m³/(m²·h·kPa)
Max pressure
≈ 0.6 MPa typical (wall-dependent)
Max temperature
400 °C max
Specific surface
10 – 40 cm²/cm³
Standard
GB/T 6886-2008
Dimensions & Configuration
Tube OD
φ20 – φ200 mm
Tube length
100 – 1,200 mm
Wall thickness
1 – 10 mm
Custom dims
Yes — to customer drawing
End caps
316L welded; other alloys on request
End connections
DOE · 222/226 · M20/M30 · 1″ NPT · Fin
O-ring / Gasket
Silicone · Buna-N · EPDM · PTFE; others on request
Surface finish
Standard sintered; external polish on request
Product Features

Engineering Advantages of SS Sintered Powder Elements

Backwashable and Reusable

Reverse gas pulse, liquid backwash, 5% HNO₃ soak, or ultrasonic cleaning. The sintered metal structure is typically regenerable over repeated cleaning cycles, subject to service conditions and cleaning method.

All-Metal Filtration Structure

No binder or polymer filtration layer is used in the 316L sintered matrix, helping reduce media migration risk in pharmaceutical, food, and semiconductor-related service.

Rated to 400 °C (alloy and duty dependent)

All-metal filter body; assembly temperature limits depend on the seals, connections and service conditions.

Custom Dimensions

Non-standard OD, length, wall thickness, and end-cap configuration to drawing — including a threaded end connection, an O-ring quick-connect for snap-in housings, or a large-bore NPT/BSP port. Typical lead time 3–5 weeks for custom items.

Smooth External-Polish Finish

An optional polished outer surface — available on both 316L and titanium elements — resists particle build-up and extends the interval between cleanings, for vacuum-pump protection, exhaust, and catalyst-recovery duty.

Material Compatibility Requires Process Review

316L compatibility depends on the medium, concentration, temperature, chloride level, oxidizing conditions, crevices and flow. Provide the actual process conditions for a material recommendation and, where needed, corrosion testing. Titanium or a higher-alloy material may be appropriate for aggressive service.

Applications

Typical Applications for SS Sintered Powder Elements

API Decarburization

Pre-polishing filtration of pharmaceutical active ingredients and solvents. Tightly-controlled pore size limits carbon particle carry-over into product.

1–5 µm · CoC

RO Pre-filtration

Backwashable when suitable for the process; cleaning and replacement intervals require validation.

5–20 µm · 316L · Backwashable

Chemical Intermediate Filtration

Specify liquid composition, concentration, temperature, pressure, flow and cleaning method before selecting 316L. FILTURE can review the service conditions and recommend a suitable alloy and element configuration.

0.5–20 µm · Process review required

Petroleum Product Polishing

Terminal filtration of refined petroleum products and hydraulic fluids before storage or dispatch. Removes particulate to specification.

5–25 µm · High pressure · 316L

Compressed Gas Filtration

Particle and aerosol removal from N₂, H₂, compressed air, and process gases. Pressure rating depends on wall thickness — heavier wall sections available for higher-pressure lines.

0.22–5 µm · Dry service

Semiconductor Process Gas

Particle removal from bulk gas delivery lines — N₂, Ar, H₂. Low particle-release risk; cleanroom-style packaging available on request.

0.5–2 µm · Clean-pack

Pneumatic Muffler and Flame Arrestor

Porous metal components for flame-arrestor applications require validation in the complete assembly for the specified gas group, installation, temperature and pressure. Pore size alone does not establish flame-arresting performance. Cleaning and reuse require an agreed procedure and reassessment; no complete-device certification is asserted here.

Custom OD · 316L · Reusable

Vacuum and Exhaust Gas Protection

Externally polished elements resist particle build-up on vacuum-pump inlet protection, fermentation exhaust, and catalyst-recovery filtration — extending intervals between cleanings.

Smooth-polish option · 316L or Ti

Request Specifications or a Quote

Send your pore size, process conditions, and housing dimensions. We'll confirm material grade, certification options, and delivery lead time.

FILTURE is a supplier and exporter of sintered metal filter elements — parts are made to order and shipped worldwide.