Your One-Stop Wire Mesh Fence Supplier | POLYMETAL
Copper wire mesh—also called red copper mesh, pure copper mesh, or copper filter mesh—is a soft, highly conductive, non-magnetic screening medium that pairs excellent EMI/RFI shielding with good formability and corrosion resistance in many atmospheres. It can be supplied in rolls or cut/formed into discs, strips, sleeves, and custom shapes.
 |  |
- Material: Red copper wire, Cu ≥99.9% (C11000-class purity)
- Mesh count range: 1–200 mesh (other fine sizes on request)
- Wire diameter range: 0.05–2.03 mm (mesh-dependent)
- Weaves: Plain weave (standard), Twill weave
- Common roll size: 1.0 m × 30 m (others: 1.2 × 30 m, 1.5 × 30 m, 2.0 × 30 m)
- Available widths: 0.60–1.80 m (typical)
- Features: Non-magnetic; wear-resistant; acid/alkali resistant (moderate); high electrical & thermal conductivity; good ductility; EMI/EMF shielding
- Shapes: Round, oval, square, rectangular, triangular, trapezoidal; can be cropped to 30 mm minimum pieces (strips, discs, pads)
Applications Copper Wire Mesh
- EMI/RFI/EMF shielding: Faraday cages, room/building shielding, electronic enclosures, cable joints
- Acoustic & noise mitigation (with shielding)
- Screening & filtration: powders, grains, porcelain clay, glass; gas & liquid pre-filters
- Architectural & decorative: ventilation screens, façade inserts, restoration
- Laboratory & craft use: insect screens for research, chemical test sieves
- Grounding & static control: bonding straps, gasketing, conductive tapes
Shielding note: Actual attenuation depends on frequency & field type, mesh count, wire diameter, and continuity/grounding. Finer meshes and larger wire diameters generally improve shielding at higher frequencies; ensure good electrical bonding around seams and edges.
Our equipments
 |  |
Specifications
A. General Mesh Envelope
| Item | Specification |
|---|---|
| Material (purity) | Red copper (pure copper), Cu ≥99.9% |
| Mesh count | 1–200 mesh |
| Wire diameter | 0.05–2.03 mm (mesh-dependent) |
| Weave technology | Plain weave, Twill weave |
| Standard roll | 1.0 m × 30 m |
| Other rolls | 1.2 × 30 m, 1.5 × 30 m, 2.0 × 30 m |
| Typical widths | 0.60–1.80 m |
| Shapes | Discs, rings, strips, sleeves; round/oval/square/rectangular/triangular/trapezoid; custom per drawing |
| Processing | Shear, slit, stamp, laser/water-jet cut; form, fold, hem; edge wrap |
B. Shielding-Oriented Size Table (as provided)
| Mesh/inch | Wire Dia. (mm) | Aperture (mm) | Mesh/inch | Wire Dia. (mm) | Aperture (mm) | Mesh/inch | Wire Dia. (mm) | Aperture (mm) |
|---|---|---|---|---|---|---|---|---|
| 2 | 1.60 | 11.10 | 20 | 0.25 | 1.02 | 110 | 0.09 | 0.141 |
| 4 | 0.91 | 5.44 | 30 | 0.21 | 0.64 | 120 | 0.09 | 0.122 |
| 6 | 0.71 | 3.52 | 40 | 0.19 | 0.45 | 130 | 0.07 | 0.125 |
| 8 | 0.50 | 2.67 | 50 | 0.15 | 0.36 | 140 | 0.07 | 0.111 |
| 10 | 0.50 | 2.04 | 60 | 0.15 | 0.27 | 150 | 0.06 | 0.109 |
| 12 | 0.45 | 1.66 | 70 | 0.13 | 0.232 | 160 | 0.06 | 0.098 |
| 14 | 0.40 | 1.41 | 80 | 0.12 | 0.197 | 180 | 0.053 | 0.088 |
| 16 | 0.30 | 1.28 | 90 | 0.11 | 0.172 | 200 | 0.053 | 0.074 |
| 18 | 0.25 | 1.16 | 100 | 0.10 | 0.154 | 220 | 0.05 | 0.065 |
Interpretation:
• Mesh/inch = openings per linear inch.
• Aperture (opening) and wire diameter together determine open area and resistance.
• For shielding, pick higher mesh for higher frequencies and ensure continuous electrical bonding.
Copper Wire Mesh vs. Brass vs. Phosphor Bronze
| Item | Red Copper Mesh | Brass Wire Mesh | Phosphor Bronze Mesh |
|---|---|---|---|
| Material | Pure copper (Cu 99.9%) | H65 (Cu 65%, Zn 35%) or H80 (Cu 80%, Zn 20%) | Cu 85–90%, Sn 5–15% (with P) |
| Typical mesh range | 10–200 | 1–250 | 2–400 |
| Magnetic? | Non-magnetic | Non-magnetic | Non-magnetic |
| Mechanical | Very ductile, soft | Stronger than pure Cu; springier | Good spring, wear & fatigue resistance |
| Corrosion | Good in many atmospheres | Good general; susceptible to dezincification in some media | Good, improved fatigue & wear |
| Color | Reddish | Yellow/gold | Reddish-brown |
| Typical uses | EMI/RFI shielding, Faraday cages, building anti-noise/EMF, fine screening | General screening, sieving powders/particles | Precision sieving, springs, contacts, fine filters |
 |
Features & Handling
- Non-magnetic: Diamagnetic; safe for magnet-sensitive applications
- Conductive: Excellent electrical & thermal conductivity → superior EMI shielding and heat spreading
- Formable: Easy to cut, bend, fold, and hem; suitable for shaped screens and gaskets
- Durable: Good wear resistance and ductility; can be soldered/brazed; spot welding possible with care
- Chemical resistance: Good in many atmospheres; avoid strong oxidizers (e.g., nitric acid, ferric chloride, ammonia complexes)
Fabrication & Finishing Options Copper Wire Mesh
- Cutting: shear, slitting, stamping, laser/water-jet
- Forming: fold, roll, cylindrical sleeves, cones
- Edges: raw cut, hemmed, edge-wrapped, framed in copper or brass strip
- Joining: soldering, brazing, mechanical crimping; conductive adhesives/gaskets for EMI seams
- Surface: degreased, bright, tinned (on request) for improved solderability
Quality, Standards & Documentation
- Standards reference: Industrial woven wire cloth practices (e.g., ASTM E2016; ISO 9044 terminology)
- Inspection (on request): dimensional check (mesh, wire dia., width/length), visual finish, conductivity verification
- Traceability: batch/lot labels; COA on request
Packing & Logistics
- Rolls: moisture-proof film → kraft/woven wrap → labeled carton
- Cut parts: bagged by batch, corner/edge protection for framed pieces
- Export: wooden cases; palletization for bulk shipments
Selection Tips (Shielding)
- Frequency: Higher frequencies → higher mesh count; ensure continuous, conductive seams.
- Attenuation target: Thicker wire and tighter mesh often increase shielding; model or test for your band.
- Grounding: Bond mesh to ground at multiple points to eliminate leakage paths.
- Environment: For outdoor or corrosive settings, consider protective coatings or periodic maintenance.
RFQ Checklist Copper Wire Mesh
What is copper wire mesh?
A woven wire cloth made from pure (red) copper used for screening, filtration, and EMI/RFI/EMF shielding. It’s soft, highly conductive, and non-magnetic.
What purity is typical?
Most copper mesh uses ≥99.9% copper (often C11000/ETP grade). Higher purities are available for specialty electrical or shielding needs.
Which standards apply?
Industrial woven wire cloth commonly references ASTM E2016 for general requirements and tolerances, and ISO 9044 for terminology and dimensional definitions (aperture, wire diameter, pitch).
What mesh counts and wire diameters are available?
Typical market range is about 1–200 mesh with wire diameters from roughly 0.05–2.03 mm, depending on the mesh and weave.
Which weaves are offered?
Plain weave is standard for most sizes; twill weave is available where different drape or mechanical behavior is desired.
What are common roll sizes and widths?
Common roll size is 1.0 m × 30 m. Other frequent options include 1.2 × 30 m, 1.5 × 30 m, and 2.0 × 30 m. Typical width availability spans roughly 0.60–1.80 m.
Is copper mesh magnetic?
No. Copper is diamagnetic (non-magnetic), which is useful around magnet-sensitive equipment and in shielding applications.
How effective is copper mesh for EMI/RFI shielding?
Very effective due to high electrical conductivity. Actual attenuation depends on frequency, mesh geometry (count and wire size), enclosure continuity, seam treatment, and grounding.
What mesh is “best” for a Faraday cage?
There’s no single best mesh. Higher mesh counts (smaller openings) help at higher frequencies, but ensure continuous coverage, overlapping seams, conductive gasketing, and solid grounding—these factors often matter more than the exact mesh.
Can copper mesh be formed into shapes?
Yes. It can be cut, slit, stamped, laser/water-jet cut, folded, hemmed, edge-wrapped, and shaped into discs, rings, sleeves, and panels. It can also be cropped into small pieces (e.g., around 30 mm wide strips).
Can it be soldered or brazed?
Yes. Copper mesh solders and brazes readily. Use compatible fluxes and ensure good electrical bonding for shielding effectiveness.
How does copper mesh compare with brass or phosphor bronze?
Copper: highest conductivity; best for EMI/RFI shielding; very ductile.
Brass: stronger/springier; lower conductivity than copper; good general screening.
Phosphor bronze: good spring, wear and fatigue resistance; lower conductivity than copper; favored for precision sieving and contacts.
Is copper mesh corrosion-resistant?
It resists many atmospheres and forms a protective patina (verdigris) over time. Avoid strong oxidizers or ammonia-bearing environments that can attack copper.
What are typical filtration and screening uses?
Sieving powders and grains, gas and liquid pre-filters, porcelain clay and glass processing, lab sieves, and architectural ventilation screens.
Does copper mesh offer thermal benefits?
Yes. Copper’s high thermal conductivity aids heat spreading and can help with thermal management in enclosures and vents.
What finishes or treatments are available?
Standard supply is bright or degreased. Optional treatments include passivation, edge hemming/wrapping, framing, or tinning for improved solderability.
How should copper mesh be cleaned and maintained?
For bright finishes, use gentle copper-compatible cleaners, rinse thoroughly, and dry. For many outdoor uses, the natural patina is acceptable and protective.
What should I specify to get a firm quote?
Material purity (≥99.9% Cu), mesh count and wire diameter (or target aperture/open area), width and roll length or cut-part sizes, weave (plain/twill), edge/finish requirements, quantity/MOQ, and required documentation (material/inspection certificates); and—if your assembly also uses stainless steel welded wire mesh panels— include the stainless grade (304/304L/316/316L), opening and wire size, panel dimensions, and finish.
Are custom sizes and shapes available?
Yes. Most suppliers provide custom widths, lengths, and cut parts per drawing, including round, oval, rectangular, triangular, trapezoidal, and framed panels.
Summary
Copper wire mesh (red copper, 99.9% Cu) combines excellent conductivity, non-magnetic behavior, and easy formability with reliable EMI/EMF shielding and versatile screening performance. With mesh counts from 1–200, wire diameters from 0.05–2.03 mm, and roll sizes up to 2.0 × 30 m, it can be tailored for enclosures, Faraday rooms, filters, and architectural screens—cut, formed, and finished exactly to your specification.
