Copper | Brass | Phosphor Bronze Wire Mesh

For woven wire mesh, we can specify copper wire mesh size by confirming mesh counts, wire diameter and opening (aperture) size. It’s also ok if two of them are known because we can calculate another one by the following formula.

Mesh counts = 25.4 mm / (wire diameter [mm] + opening size [mm])

• Mesh counts: the number of holes per inch (25.4 mm)
• Wire diameter: the thickness of one wire
• Opening / aperture size: the distance between two adjacent parallel wires

• Firstly, we need to know the size of wire diameter and aperture. It’s better to use micrometer to measure the diameter of wire, and ruler or vernier caliper to measure the aperture size. Let’s assume wire diameter is 0.406 mm and opening size is 0.86 mm.
• Secondly, using the formula to calculate the mesh size. Mesh counts = 25.4 mm / (0.406 mm + 0.86 mm) = 20.06319……
• We can know that mesh number is approximately 20.

Actually, for some coarse mesh, we can specify wire mesh size by counting the number of openings per liner inch (25.4 mm). For example, 5X5 or 10X10 mesh copper mesh. We just need to check the number of openings is 5 or 10 in both lengthwise and crosswise.

For fine mesh (100 120 150 180 200 250 300 350 mesh count or others), it may be difficult to find a tool to measure the aperture size. Moreover, there are too many holes per inch to count. Microscope may help you to figure out the mesh size.

For 40 mesh, weave type of mesh is typically plain and has 40 openings (square shape holes) in both lengthwise and crosswise.

40 mesh is mainly short for 40X40 mesh.

According to the mesh screen size chart, we can know that its wire diameter is 0.254 mm and opening size is 0.38 mm.

200 mesh means there are 200 openings in both directions. We can also figure out that the mesh has 0.0533 mm wire diameter and 0.0838 mm opening size.

1 micron (0.001 mm) in mesh size is 500*3200. 1 micron means mesh’s nominal opening size is 0.001 mm and its material is typically stainless steel 316L.

• Copper wire mesh can only down to 60 micron (in other words, mesh size can up to 250).
• The smallest micron size of brass wire mesh is 60 (the highest mesh size is 250 till now).
• The finest phosphor bronze wire mesh is 350 mesh, roughly 43 micron.

Here we mainly introduce woven copper wire mesh and knitted copper mesh.

Copper woven wire cloth is interlaced with two distinct sets of wires (warp wires and weft [is also called woof or filling] wires). Warp and woof wires are both straight and at right angles to each other.

But the wire of knitted copper wire mesh is meandering which makes the mesh can stretch in all directions.

So the elasticity of knitted mesh is better than woven mesh.

We also call it copper mesh, copper wire cloth | screen | netting, pure copper mesh, red copper wire mesh.

It is a soft (low hardness), malleable, and ductile metal mesh. Copper wire mesh has high ductility, thermal conductivity, electrical conductivity and superior heat dissipation property.

The softness of copper partly explains its high electrical conductivity and high thermal conductivity. That is because the resistivity to electron transport in metals at room temperature originates primarily from scattering of electrons on thermal vibrations of the lattice, which are relatively weak in a soft metal.

• Copper woven wire mesh is suitable for Faraday cage to block radio frequency interference (RFI) / EMI / electromagnetic.
  • Usually, the higher the mesh count of copper mesh screen, the better the shielding ability. So Faraday cages may use fine copper mesh for shielding. Popular mesh counts are 100 120 150 180 200 and 250 mesh. They are suitable for different environments.
  • Here is a test about 200 mesh copper screen to block cell phone signal.
    • Cell phone signal

• • • Cell phone signal is blocked by ultra fine copper mesh screen

• Heat dissipation may use woven copper mesh because of its superior heat dissipation properties.

• Knitted copper mesh

• Knitted copper | stainless steel mesh

As we all know, mice can go through many kinds of openings (even smaller than itself), and will destroy something. So maybe we all want to fill holes to stop mice from crawling through openings.

Answer is yes. When we talk about copper mesh for mice (mouse) rats rodents squirrels pest control, it mostly refers to knitted copper wire mesh.

• Copper mouse mesh is a good choice because of its highly flexible and adaptable properties which makes it easy to fill holes, to seal weep holes and around pipes.
• It’s difficult for rodents / mice / rats / squirrels / pest to chew / eat through and destroy knitted copper wire mesh.

• Firstly, you need to estimate how much copper mesh to fill holes to keep mice out.
• Then cut and roll it to create a kind of mesh “plug” or ”roll”.
• Finally, putting the copper mouse mesh into holes.

Or you can stuff copper mesh for rats into openings until cannot fit in anymore, then cut.

Knitted copper mesh is suitable for slugs control because it can give them a shock when slugs come in contact with copper.

Home distilling may also use knitted copper wire mesh.

Why use copper mesh packing for distillation?

• Copper can react with sulfur compounds, and helps to remove sulfides from the distillate. That is good because sulfur compounds (they are byproducts during fermentation and can also be found in some fruits) will make your final product smells and tastes bad.

Brass is an alloy of copper and zinc. Brass mesh is also known as brass screen, brass metal mesh, brass wire cloth, brass woven wire mesh.