Stainless Steel Sintered Powder Filter Cartridge & Cylinder
Heavy-Duty Industrial Porous Metal Elements for Harsh Chemical, High-Temperature Industries
Core Product Overview
Stainless steel sintered powder filter cartridges and cylinders are porous metallic filtration elements manufactured from atomized 316L/304L stainless steel powder through cold isostatic pressing and high-temperature vacuum sintering. The resulting rigid, depth-filtration matrix delivers reliable particle retention, high differential pressure resistance, and long-term chemical durability without fiber migration.
Technical Specifications Technical Performance Datas
| Specification | Standard Range / Value |
| Material Grade | AISI 316L, 304L (Optional: Nickel, Monel, Inconel) |
| Filtration Precision (Micron Rating) | 0.2 µm, 0.5 µm, 1 µm, 3 µm, 5 µm, 10 µm, 20 µm, 50 µm, 100 µm |
| Porosity | 28% – 50% |
| Operating Temperature | -200°C to 600°C (up to 800°C in inert atmospheres) |
| Max Differential Pressure | Up to 3.0 MPa (30 bar / 435 psi) |
| Outer Diameter (OD) | 10 mm – 200 mm |
| Length | 100 mm – 1200 mm (Seamless or welded assemblies) |
| End Fittings / Interfaces | DOE (Double Open End), 222, 226, NPT/BSP Threaded, Flanged |
Technical Performance Datas
The following matrix outlines the performance metrics across our standard porous 316L sintered metal powder element grades:
| Grade Code | Nominal Micron Rating (µm) | Absolute Rating (99.9% Efficiency) | Porosity (%) | Permeability (m³/h·m²·kPa) | Min. Bubble Point Pressure (KPa) |
| SPE-002 | 0.2 µm | 0.5 µm | 30% ± 2% | 0.8 – 1.2 | ≥ 18.0 kPa |
| SPE-005 | 0.5 µm | 1.0 µm | 32% ± 2% | 2.5 – 3.5 | ≥ 12.0 kPa |
| SPE-010 | 1.0 µm | 3.0 µm | 35% ± 3% | 6.0 – 8.5 | ≥ 8.5 kPa |
| SPE-050 | 5.0 µm | 10.0 µm | 38% ± 3% | 22.0 – 28.0 | ≥ 4.2 kPa |
| SPE-100 | 10.0 µm | 18.0 µm | 40% ± 3% | 55.0 – 70.0 | ≥ 2.5 kPa |
| SPE-200 | 20.0 µm | 35.0 µm | 42% ± 3% | 120.0 – 150.0 | ≥ 1.2 kPa |
| SPE-500 | 50.0 µm | 75.0 µm | 45% ± 4% | 300.0 – 380.0 | ≥ 0.6 kPa |
Note: Bubble point pressure tested in according to ISO 2942 standards using ethanol/water medium.
Key Features & Advantages
Rigid Depth Filtration Matrix: Uniform interconnected tortuous pores capture fine contaminants across the entire media thickness, preventing sudden surface clogging.
Superior 316L Corrosion Resistance: Low-carbon chemistry minimizes intergranular corrosion during thermal cycles and contact with strong acids or alkalis.
High Differential Pressure Tolerance: Self-supporting porous metal body withstands severe pressure surges and hydraulic shocks without structural deformation.
Fully Cleanable & Regenerable: Reusable through online backflushing, ultrasonic bath cleaning, solvent soaking, or high-temperature burnout.
Primary Industrial Applications
Hydrogen Production & Water Electrolyzers: Electrolyte filtration, liquid-gas separation, and diffusion layers in alkaline and PEM electrolyzer systems.
Chemical & Petrochemical Processing: Fine catalyst recovery, high-temperature gas solid separation, polymer melt filtration, and organic solvent purification.
Pharmaceutical & Biotech: Steam sterilization filtration, decarburization, fluid sparging, and active pharmaceutical ingredient (API) separation.
Food & Beverage Processing: Process steam filtration, beverage carbonation, and high-purity gas injection.
Custom Engineering & OEM Options
We provide complete OEM/ODM manufacturing services for sintered porous metal elements:
Custom length, wall thickness, and diameter configurations.
Precision TIG welding for custom end caps, threaded adapters, and mounting flanges.
Technical data sheet (TDS) and material test certificates (MTC according to EN 10204 3.1) provided with orders.
Frequently Asked Questions (FAQ)
Q1: What is the main difference between sintered powder filter cartridges and sintered multi-layer wire mesh filters?
Sintered powder cartridges offer a dense depth filtration structure with high tortuosity, ideal for fine sub-micron retention and deep particle holding. Sintered wire mesh features higher flow permeability and easier surface cleaning for coarser liquid/gas filtration.
Q2: How can a 316L sintered metal powder element be cleaned for reuse?
Elements can be regenerated using backflushing (reverse flow gas or liquid), ultrasonic cleaning in chemical solvents, or chemical soaking in acid/alkali solutions based on the specific contaminant type.
Q3: Can these filter cylinders be customized for high-pressure hydrogen gas diffusion?
Yes. We adjust powder particle size distributions and pressing pressures to achieve controlled porosity and bubble point pressure suited for gas diffusion and electrolysis processes.
Get a Custom Quote & Datasheet
Looking for reliable 316L sintered stainless steel powder filter cartridges or custom OEM porous metal cylinders for your industrial filtration system? Contact our technical team today for engineering support, product samples, and direct factory pricing.
