Etched Fuel Injector Spray Plate in 316L Stainless Steel (AISI 316L (1.4404)) is used for shaping gasoline and urea sprays at the injector tip with thin etched orifice plates, whose hole size, count and layout set droplet size and spray pattern. 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 Fuel Injector Spray Plate Available in 316L Stainless Steel
| Size | Plate diameter (mm) | Thickness (mm) | Hole diameter (mm) | Hole count | Hole rings | Spray angle (u00b0) |
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| Port injector 4-hole | 5.0 | 0.10 | 0.18 | 4 | 2 | 15 |
| Port injector 12-hole | 5.5 | 0.10 | 0.15 | 12 | 2 | 20 |
| Urea doser 6-hole | 6.0 | 0.15 | 0.12 | 6 | 2 | 25 |
Where 316L Stainless Steel Etched Fuel Injector Spray Plate Is Used
- Port fuel injector makers: multi-hole orifice discs for cleaner combustion.
- SCR / AdBlue dosing: urea doser spray plates.
- Small engines & motorcycles: injector spray plates.
- Industrial atomizers: fine-spray orifice plates for humidifiers and coaters.
Ordering Etched Fuel Injector Spray Plate in 316L Stainless Steel
- Hole count & diameter: 4–12 holes of 0.12–0.18 mm, matched to target flow.
- Spray angle: Set by hole position and wall taper on the etch exit face.
- Thickness & alloy: 0.1–0.15 mm SS316L or martensitic stainless for wear.
Mistakes to Avoid with Etched Fuel Injector Spray Plate
- Burrs or etch residue that distort the spray.
- Hole-size variation between plates on one engine.
