Etched Micro-Slot Filter Screen in 316L Stainless Steel (AISI 316L (1.4404)) is used for filtering through precise micro-slots etched into thin metal foil, which give more open area than round holes of the same width and resist blinding by flat or fibrous particles. The alloy gives superior resistance, including chlorides, brines, food CIP and mild acids and is essentially non-magnetic, with a practical service limit of approx. +550 °C continuous.
Alloy Properties
| Grade designation | AISI 316L (1.4404) |
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| Magnetic response | Essentially non-magnetic |
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| Service temperature | approx. +550 °C continuous |
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| Corrosion characteristic | Superior resistance, including chlorides, brines, food CIP and mild acids |
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Specifications of Etched Micro-Slot Filter Screen Available in 316L Stainless Steel
| Size | Hole diameter (mm) | Pitch (mm) | Thickness (mm) | Open area (%) | Slot (mm) |
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| Slot 0.05 | 0.05 | 0.15 | 0.05 | 18 | 0.05 u00d7 1.0 |
| Slot 0.10 | 0.10 | 0.25 | 0.10 | 24 | 0.10 u00d7 2.0 |
| Slot 0.20 | 0.20 | 0.40 | 0.20 | 30 | 0.20 u00d7 3.0 |
Where 316L Stainless Steel Etched Micro-Slot Filter Screen Is Used
- Fuel & hydraulic valves: slot filters that fit inside compact valve and injector bodies.
- Medical devices: slot screens in infusion pumps and catheters.
- Beverage dispensers: micro-slot strainers on syrup and water lines.
- Instrumentation: sensor-port and sampling screens.
Ordering Etched Micro-Slot Filter Screen in 316L Stainless Steel
- Slot width: 0.05–0.2 mm — the width, not the length, sets particle retention.
- Slot length & pattern: Longer slots raise open area; staggered rows keep the sheet stiff.
- Foil: 0.05–0.2 mm SS316L, with slot width at least equal to foil thickness.
Mistakes to Avoid with Etched Micro-Slot Filter Screen
- Specifying slots narrower than the foil thickness, which etching cannot produce cleanly.
- Ignoring slot orientation when forming the screen into a cup or tube.
