Sintered Metal Filters

What pore structure do sintered filters provide?

Sintered media offers controlled, interconnected porosity with more stable rating than unsupported mesh under flow and pressure. Multi-layer laminates place coarse capture upstream and fine retention downstream — common in 5-layer hydraulic and polymer filter plates. Rating, thickness and layer stack define differential pressure and dirt holding — specify micron target and maximum differential pressure from your system.

Five-layer laminates are common for hydraulic last-chance protection; thinner single-layer discs suit some polymer breaker plates — layer stack is confirmed from micron target and allowed pressure drop, not guessed from an old part number alone.

Discs, tubes, cartridges and plates — which form?

Discs and plates mount in holders or extruder packs; tubes and cartridges integrate into housings with defined OD/ID and length. Shape follows your housing or OEM part — send drawing with gasket or bolt circle details. Flat laminates may be cut to non-round outlines after sintering where tooling allows.

Non-round discs and rectangular plates may be laser or wire-cut after sintering; send 2D outline with tolerance and edge condition. Bolt-hole patterns and gasket grooves must appear on the drawing to avoid fit issues at installation.

Micron rating, dirt capacity and cleaning

Nominal vs absolute retention should match your test method or OEM spec. Dirt capacity ties to layer depth and porosity. Back-flushing, solvent cleaning and ultrasonic cycles affect long-term performance — describe regeneration frequency and allowed differential pressure rise before change-out.

Sintered tubes for catalyst or fluidized applications may need uniform porosity along length — note if flow is inside-out or outside-in. End caps welded to sintered tube are quoted as assembly with joint inspection points defined on the PO.

Temperature and pressure limits

Peak operating temperature, surge pressure and clean temperature drive alloy and laminate selection. Standard SS316L laminates cover many industrial duties; higher performance requires explicit data — do not extrapolate from unrelated OEM catalogs.

Some duties allow periodic back-flush; others require element change-out when differential pressure hits a limit — describe your SOP so we do not over-specify or under-specify media depth.

What should I send for an accurate sintered filter quotation?

Micron rating, dimensions, shape, alloy, operating differential pressure, temperature, media, cleaning method, quantity and sample or drawing if available.

Special alloys for high-temperature or corrosive gas service are quoted with explicit max operating and clean temperature; do not assume SS316L sintered parts match inconel or hastelloy performance without data.

MOQ and first-article validation

Sintered parts often require tooling for shape and layer stack — MOQ confirmed per quote. New micron ratings or cap interfaces benefit from sample approval before batch release; schedule confirmed per project.

Pair sintered discs with woven pre-layers in extruder packs via Filter Discs & Packs, or specify standalone laminates here. Custom thickness stacks not in catalog are quoted under drawing review.

Related products and next steps

Review sintered family products in the product range section for discs, tubes and laminate forms. Combine with Woven Wire Mesh pre-layers in extruder or inline packs via Filter Discs & Packs when your process uses both rigid and flexible media. Non-standard outline laminates or welded assemblies route to Custom Fabrication. Related technical articles on filtration duty and material selection support RFQ preparation — include micron rating, dimensions, differential pressure and cleaning method when you inquire.

When your holder or extruder pack uses both sintered and woven layers, send the full stack on one RFQ so alloy, thickness and gasket seat align across materials. First-article dimensional reports and material certificates can be included when your validation file requires measured pore rating confirmation — state documentation needs on the PO. Repeat annual releases benefit from fixed layer stack and lot traceability once the first article is approved.