stainless steel wire mesh filter disc (also known as a pack screen or filter screen) is a precision-engineered circular filtration element made from woven, sintered, or perforated stainless steel wire mesh. These discs are cut to specific diameters and can be single-layer or multi-layered, offering filtration accuracy ranging from 1 micron to 500 microns.
They are widely regarded as one of the most durable, reusable, and cost-effective filtration solutions across industries.
| Grade | Key Properties | Best For |
|---|---|---|
| 304 SS | General corrosion resistance, affordable | Food & beverage, general industrial |
| 304L SS | Low carbon, weldability | Pharmaceutical, high-purity processes |
| 316 SS | Superior pitting & chloride resistance | Marine, chemical, sour gas |
| 316L SS | Ultra-low carbon, maximum corrosion resistance | Pharma, food grade, aggressive chemicals |
| Parameter | Range |
|---|---|
| Disc Diameter | 5 mm – 1000 mm (custom available up to 3000 mm for extruder filters) |
| Mesh Count | 1 – 3500 mesh (20 – 400 mesh most common) |
| Filtration Rating | 1 μm – 500 μm (typical: 4 μm, 5 μm, 7 μm, 25 μm, 50 μm, 100 μm, 200 μm) |
| Wire Diameter | 0.03 mm – 0.50 mm (0.053 – 1.0 mm also available) |
| Thickness | 0.2 mm – 3.0 mm (single layer); up to 6 mm+ (multi-layer) |
| Operating Temperature | Up to 500 °C (some sintered types) |
| Operating Pressure | 6 – 10 bar (standard); higher for special designs |
The production of stainless steel wire mesh filter discs follows a three-step process:
🔬 Sintered filter discs go through an extra step: metal fibers are knitted into wire mesh, layered with fibrofelts, then vacuum-sintered at 1,100–1,500 °C for 1–5 hours — producing a disc with lower filtering resistance and higher precision.