Specification data for 400 mesh plain weave wire mesh to ISO 9044 / ASTM E2016: aperture and micron rating, standard and alternative wire diameters, open area, weight per square metre, and the applications this fineness is commonly used for.
400 Mesh Specification Row (ISO 9044 / ASTM E2016)
| Mesh count | Wire diameter (mm) | Aperture (mm) | Micron rating (u00b5m) | Open area (%) | Weight SS (kg/mu00b2) | Reference standard |
|---|---|---|---|---|---|---|
| 400-Mesh | 0.030 | 0.034 | 34 | 27.8 | 0.19 | ISO 9044 |
400 Mesh to Micron & Aperture
| Openings per inch | 400 |
|---|---|
| Aperture (opening width) | 0.034 mm |
| Micron rating | 34 µm |
| Standard wire diameter | 0.03 mm |
| Open area | 27.7 % |
Aperture = (25.4 mm ÷ mesh count) − wire diameter. The micron rating equals the aperture in micrometres; actual retention also depends on particle shape and cake formation.
Wire Diameter Options at 400 Mesh
| Option | Wire dia | Aperture | Micron | Open area | Weight (SS) |
|---|---|---|---|---|---|
| Heavy wire | 0.039 mm | 0.025 mm | 25 µm | 14.9 % | 0.31 kg/m² |
| Standard wire | 0.030 mm | 0.034 mm | 34 µm | 27.8 % | 0.19 kg/m² |
| Fine wire | 0.023 mm | 0.041 mm | 41 µm | 41.7 % | 0.10 kg/m² |
Heavier wire adds strength and abrasion life but closes the aperture; finer wire opens the aperture and raises throughput at the cost of durability. Specify mesh count AND wire diameter to fix the aperture unambiguously.
Open Area & Flow at 400 Mesh
The standard 400 mesh weave presents an open area of about 27.7%. At this fineness, pressure drop rises quickly as cake builds — size the element area generously and plan a cleaning or backwash cycle.
400 Mesh Cloth Weight
Standard 400 mesh stainless cloth weighs approximately 0.19 kg/m² (density 7.93 g/cm³ basis; brass and copper weave roughly 10% heavier, aluminum about one third). Use this figure for roll handling and freight estimation.
Typical Applications for 400 Mesh Plain Weave Wire Mesh
400 mesh plain weave wire mesh is commonly specified for micro-filtration of process liquids and gases, catalyst recovery, fine chemical and pharmaceutical processing, and precision laboratory analysis.
Plain, Twill or Dutch Weave at This Rating?
At this fineness, compare plain weave against twill (heavier wire, more durable) and dutch weave (higher strength, pressure-resistant, nominal rather than absolute rating) before finalizing the specification.
What Plain Weave Wire Mesh Does
General screening, sieving and filtration with square-aperture stainless steel wire mesh, where each wire passes alternately over and under the next — the most widely used woven wire cloth from coarse 2 mesh to fine 635 mesh.
Fitting & Care
- Cut on a guillotine or with sharp shears and bind or weld the edges of fine cloth so wires do not unravel.
- Support fine stainless steel wire mesh with a coarse backing screen whenever it filters against pressure.
