316L Stainless Steel filter discs is stocked to ISO 9044 base cloth. The alloy provides superior resistance, including chlorides, brines, food CIP and mild acids and is essentially non-magnetic; the practical service limit is approx. +550 °C continuous. Property data, alloy comparison and the specification table follow.
Why Choose 316L Stainless Steel for Filter Discs
The default filtration and process-industry grade. For filter discs, this matters when superior resistance, including chlorides, brines, food CIP and mild acids is the controlling requirement.
Alloy Properties
| Grade designation | AISI 316L (1.4404) |
|---|---|
| Magnetic response | Essentially non-magnetic |
| Service temperature | approx. +550 °C continuous |
| Corrosion characteristic | Superior resistance, including chlorides, brines, food CIP and mild acids |
Corrosion Behavior in Filtration Service
316/316L adds 2–3% molybdenum to the 304 composition, which sharply improves resistance to chloride pitting and mild acids. For filter discs in marine, brine, food-CIP and chemical-process service, 316L is the default filtration grade; the L (low-carbon) variant also resists sensitization where elements are welded into frames.
Comparable Alloys
Below 316L sits 304 (general purpose, lower cost). Above it: duplex 2205 (strength + chloride resistance), 904L and Hastelloy C-276 (hot chlorides, sulfuric), Monel 400 (HF, seawater), titanium (chlorides at minimum weight) for filter discs.
Specifications of Filter Discs Available in 316L Stainless Steel
| Diameter (mm) | Mesh / micron options | Layers | Edge treatment | Reference standard |
|---|---|---|---|---|
| 10 | 40-Mesh to 500-Mesh / 25-400 u00b5m | 1-5 | Plain cut or spot welded | ISO 9044 base cloth |
| 20 | 40-Mesh to 500-Mesh / 25-400 u00b5m | 1-5 | Plain cut or spot welded | ISO 9044 base cloth |
| 38 | 40-Mesh to 500-Mesh / 25-400 u00b5m | 1-5 | Spot welded or bound rim | ISO 9044 base cloth |
| 50 | 40-Mesh to 500-Mesh / 25-400 u00b5m | 1-7 | Aluminum / SS bound rim | ISO 9044 base cloth |
| 100 | 40-Mesh to 635-Mesh / 20-400 u00b5m | 1-7 | Aluminum / SS bound rim | ISO 9044 base cloth |
| 200 | 40-Mesh to 635-Mesh / 20-400 u00b5m | 1-7 | SS bound rim | ISO 9044 base cloth |
| 300 | 40-Mesh to 635-Mesh / 20-400 u00b5m | 1-7 | SS bound rim | ISO 9044 base cloth |
Where 316L Stainless Steel Filter Discs Is Used
- Plastic extrusion: single and multi-layer extruder screens.
- Fuel, oil & hydraulics: inlet strainer discs in pumps and fittings.
- Spray & nozzles: nozzle filter screens.
- Appliances & medical: small metal mesh filter discs in valves and devices.
Ordering Filter Discs in 316L Stainless Steel
- Diameter & shape: Round, rectangular, kidney or custom shapes cut to drawing.
- Mesh & layers: Single layer or a stack of different meshes for strength and rating.
- Edge: Plain cut, spot-welded, aluminum/copper/stainless rimmed or sintered edge.
Mistakes to Avoid with Filter Discs
- Plain-cut fine discs that fray and shed wires.
- Stacking layers in the wrong order.
