304 Stainless Steel slotted hole perforated sheet is stocked to DIN 24041 (Lg). 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 Slotted Hole Perforated Sheet
The standard general-purpose stainless mesh alloy. For slotted hole perforated sheet, 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 slotted hole perforated sheet. In chloride-bearing service (seawater, brines, road-salt spray) step up to 316L; in reducing acids consider a nickel alloy.
Comparable Alloys
The direct upgrade from 304 is 316L (chlorides, acids, CIP). Downgrade options for dry, indoor screening are galvanized or plain steel. For heat beyond ~450 °C move to Inconel 600; for seawater immersion consider Monel 400 or duplex 2205 for slotted hole perforated sheet.
Specifications of Slotted Hole Perforated Sheet Available in 304 Stainless Steel
| Slot width (mm) | Slot length (mm) | Bridge (mm) | Open area (%) | Thickness (mm) | Reference standard |
|---|---|---|---|---|---|
| 0.5 | 10 | 1.0 | 28 | 0.8 | DIN 24041 |
| 1.0 | 12 | 1.5 | 33 | 1.0 | DIN 24041 |
| 1.5 | 20 | 2.0 | 38 | 1.2 | DIN 24041 |
| 2.0 | 20 | 2.5 | 40 | 1.5 | DIN 24041 |
| 3.0 | 25 | 3.0 | 43 | 2.0 | DIN 24041 |
| 5.0 | 40 | 4.0 | 45 | 2.0 | DIN 24041 |
Where 304 Stainless Steel Slotted Hole Perforated Sheet Is Used
- Grain & seed handling: dryer floors, aeration floors and sorting screens.
- Mining & aggregate: dewatering screens and sizing panels.
- Food processing: vegetable washers, blanchers and draining conveyors.
- HVAC & architecture: linear vent panels and sunscreens.
Ordering Slotted Hole Perforated Sheet in 304 Stainless Steel
- Slot size: Width × length, e.g. 1 × 10 mm; the width controls retention.
- Pattern: Staggered slots for strength, straight rows for maximum open area.
- Orientation: State whether slots run along or across the material flow.
Mistakes to Avoid with Slotted Hole Perforated Sheet
- Turning the sheet 90° in fabrication, so the slots face the wrong way.
- Choosing a sheet thinner than the slot width, which tears around the ends.
