304 Stainless Steel cylindrical filter cartridges is stocked to ISO 2941 / ISO 3724. The alloy provides good general corrosion resistance in atmosphere and fresh water and is essentially non-magnetic (annealed); the practical service limit is approx. +450 °C continuous. Property data, alloy comparison and the specification table follow.
Why Choose 304 Stainless Steel for Cylindrical Filter Cartridges
The standard general-purpose stainless mesh alloy. For cylindrical filter cartridges, this matters when good general corrosion resistance in atmosphere and fresh water is the controlling requirement.
Alloy Properties
| Grade designation | AISI 304 (1.4301) |
|---|---|
| Magnetic response | Essentially non-magnetic (annealed) |
| Service temperature | approx. +450 °C continuous |
| Corrosion characteristic | Good general corrosion resistance in atmosphere and fresh water |
Corrosion Behavior in Filtration Service
304 gives good resistance to atmospheric exposure, fresh water and most neutral media, and is the standard general-purpose grade for cylindrical filter cartridges. In chloride-bearing service (seawater, brines, road-salt spray) step up to 316L; in reducing acids consider a nickel alloy.
Cleaning & Compatibility
Stainless cylindrical filter cartridges can be cleaned by backflush, ultrasonic bath, steam and most CIP chemistry. Two cautions: (1) avoid extended contact with hydrochloric acid or hypochlorite sanitizers, which pit even 316; (2) where the mesh contacts carbon steel during fabrication or service, iron pick-up can rust-stain the surface — specify passivation after fabrication.
Specifications of Cylindrical Filter Cartridges Available in 304 Stainless Steel
| Outer diameter (mm) | Length (mm) | Micron rating (u00b5m) | End connection | Reference standard |
|---|---|---|---|---|
| 25 | 100 | 25 / 50 / 100 | Plain ends | ISO 2941 collapse-tested |
| 40 | 150 | 10 / 25 / 50 / 100 | Plain or threaded | ISO 2941 collapse-tested |
| 50 | 250 | 10 / 25 / 50 / 100 | M20 / G1/2 fitting | ISO 2941 collapse-tested |
| 65 | 250 | 5 / 10 / 25 / 50 | DOE gasket | ISO 2941 collapse-tested |
| 65 | 500 | 5 / 10 / 25 / 50 | DOE / 222 / 226 | ISO 2941 collapse-tested |
| 65 | 750 | 5 / 10 / 25 / 50 | DOE / 222 / 226 | ISO 2941 collapse-tested |