150 mesh denotes 150 wires per inch in each direction. For plain weave wire mesh the governing document is ISO 9044 / ASTM E2016; the specification row, aperture-micron conversion and selection guidance for this count follow.
150 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 |
|---|---|---|---|---|---|---|
| 150-Mesh | 0.066 | 0.103 | 103 | 37.2 | 0.34 | ISO 9044 |
150 Mesh to Micron & Aperture
| Openings per inch | 150 |
|---|---|
| Aperture (opening width) | 0.103 mm |
| Micron rating | 103 µm |
| Standard wire diameter | 0.066 mm |
| Open area | 37.1 % |
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 150 Mesh
| Option | Wire dia | Aperture | Micron | Open area | Weight (SS) |
|---|---|---|---|---|---|
| Heavy wire | 0.086 mm | 0.084 mm | 84 µm | 24.3 % | 0.57 kg/m² |
| Standard wire | 0.066 mm | 0.103 mm | 103 µm | 37.2 % | 0.34 kg/m² |
| Fine wire | 0.050 mm | 0.120 mm | 120 µm | 50.1 % | 0.19 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 150 Mesh
The standard 150 mesh weave presents an open area of about 37.1%. A common design rule is to keep the clean-mesh approach velocity low enough that initial pressure drop is negligible; the mesh then acts as the cake support.
150 Mesh Cloth Weight
Standard 150 mesh stainless cloth weighs approximately 0.34 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 150 Mesh Plain Weave Wire Mesh
150 mesh plain weave wire mesh is commonly specified for liquid filtration and clarification, extruder screen packs, hydraulic and fuel strainers, pharmaceutical and food sieving, and laboratory test work.
Plain, Twill or Dutch Weave at This Rating?
Plain square weave is the standard at this count: every opening is a true square of the stated aperture, retention is absolute for hard spherical particles, and the cloth is easy to clean.
When to Step Up or Down from 150 Mesh
Move to 200 mesh when particles are passing that must be retained; drop back to 120 mesh when the element blinds too quickly or the pressure drop is excessive. In a multi-layer pack, pair this count with a coarser support mesh downstream to carry the pressure load.
