Stainless Woven Mesh Formulas
Calculating the aperture
1. Count of a convenient number of apertures (N)
2. Measure the length covered by the N apertures (L)
3. Measure the wire diameter (D)
4. The average aperture (A)
Working example of calculating the aperture of 6/20 woven wire mesh
1. Number of apertures counted N = 6
2. Length covered by apertures centre to centre L = 25.4mm
3. Diameter of wire D = 0.9mm
The woven wire is identified as 3.33mm aperture / 0.9mm diameter
If the aperture and the diameter are known the mesh count can be determined
Percentage Open Area
The mesh has a 62% open area
Micron (micrometer) is a unit of measure, in which usually only fine mesh under 1mm is referred to. A micron us a thousandth of a millimetre.
In this example 325/48.5, 0.043mm aperture, 0.035mm diameter is used.
Types of Weave
The most common and simplest weaves.Each warp wire (wire running parallel to the length of the cloth) passes alternatively over and under the wires running transversly through the cloth at 90 degree angles.
Is Produced by passing each fill wire alternatively over and under two warp wires.
Has extra crimps in warp and weft wires between intersections.
Is produced with pre-crimped wire. Lock crimp weave is stabilised by a notch or bump at the wire intersections.