Wire Mesh Technical Information by IWM

Wire Mesh Technical Information by IWM

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Understanding Mesh Count

Mesh Count measures the number of openings within each linear inch of wire mesh, in both directions. For instance, a wire mesh with ten openings per inch across both its width and length is referred to as a 10 x 10 mesh or Number 10 mesh.

Off-Count Mesh Explained

An Off-Count Mesh features a varied number of openings per inch in different directions. Hence, a mesh with ten openings per inch lengthwise and seventeen openings per inch widthwise would be designated a 10 x 17 mesh.

Defining Pitch

Pitch combines the aperture size and the wire's diameter. More details on wire gauges and sizes that IWM offers can be found in the Technical section on Wire Sizes.

Warp and Weft Wires

The Warp Wire runs parallel to the mesh's roll length, while the Weft or Shute Wire runs parallel to the mesh's width.

Weave Types

Various weaving styles are available for wire mesh. Twill Weaves involve warp wires passing over and under multiple weft wires, commonly used for filtration media. Crimp Mesh refers to mesh pre-crimped before weaving, such as Intermediate Crimp mesh, where wires are crimped at each opening in both directions.

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Other Weave Types

A Locking Crimp mesh features wires interlocked through crimping, providing a rigid structure. The most common weave is Plain Weave, where warp and weft wires alternate over and under each strand in both directions.

Lockstitch Weave

Lockstitch Weave is similar to plain weave but includes closely spaced warp wires to form lockstitches that prevent fraying along the mesh edges. This technique is particularly useful when trimming the mesh to narrower widths.

Wire Mesh Materials & Spacing

Carbon Steel

Plain low carbon steel, typically ranging from C1006 to C1012 alloy, combines strength and weldability with economic benefits.

Galvanized Before Weaving/Welding

Carbon steel with a light zinc coating applied during manufacturing. Suitable for most indoor applications but not ideal for outdoor installations due to limited corrosion resistance.

Galvanized After Weaving/Welding

Carbon steel coated with a heavy layer of zinc post-manufacture, offering excellent long-term corrosion protection.

High Carbon Steel

Abrasion-resistant steel designed for high-wear applications such as media filtering or sorting. Welding can be challenging; mechanical fastening is recommended for support.

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