Copper Wire Mesh, Brass and Bronze Mesh

Filtalloy supplies copper wire mesh, brass wire mesh, commercial bronze mesh and phosphor bronze mesh for filtration, screening, conductive mesh assemblies and decorative applications. We supply mesh rolls, rectangular cut pieces, discs, custom shapes and formed mesh parts, with specifications selected for your operating conditions.

The plain weave specifications below cover 3–325 mesh across the material options shown. Pure copper is available up to approximately 200–250 mesh, brass and commercial bronze up to 250 mesh, and phosphor bronze up to 325 mesh. Specifications outside the table can be customized.

Applications and Selection Conditions

Filtration and screening: strainers, particle separation and air or liquid screens where the selected copper alloy is compatible with the process medium. Select the opening, wire diameter and supporting structure for the required flow and mechanical load.
EMI/RFI shielding assemblies: conductive mesh for enclosures, vents and partitions. Shielding performance depends on frequency, opening size, electrical continuity, grounding and the complete assembly; confirm the required performance by testing.
Architecture and interiors: wall and ceiling panels, room dividers, cabinet inserts, lighting features and decorative screens. Consider the alloy color, surface finish, expected oxidation or patina, and mounting method.
Insect screens and gutter guards: choose an opening suited to the exclusion requirement and a wire diameter suited to handling and installation.
Art and fabricated parts: sculpture, craftwork and formed mesh components requiring a copper alloy appearance or formability.

Material selection should account for chemical exposure, temperature, abrasion, required stiffness and cleaning methods. Nominal aperture and open area describe mesh geometry; they do not establish filtration accuracy, pressure drop, separation efficiency or shielding effectiveness.

Copper Alloy Materials and Grade References

Pure Copper Wire Mesh

Pure copper offers high electrical and thermal conductivity, ductility and ease of forming. Its reddish color can change with oxidation and patina development. Consider pure copper when conductivity or formability is a primary selection requirement, and provide support where the mesh must carry a load. Supply extends to approximately 200–250 mesh.

US grade reference: UNS C11000, electrolytic tough-pitch copper, specifies a minimum of 99.90% copper including silver. Copper content alone does not establish a grade; confirm the specified grade and condition in the purchase requirements and material certificate.

Brass Wire Mesh

Brass is a copper-zinc alloy with a yellow-gold appearance. It is a material option for decorative screens, strainers and fabricated mesh parts where the process chemistry is suitable. Supply extends to 250 mesh. Check the environment for dezincification risk, particularly with acidic or chloride-bearing exposure.

US grade reference: UNS C27000 yellow brass has a nominal composition of 65% copper and 35% zinc. Its specified copper range is 63.0–68.5%, with zinc as the remainder.

Commercial Bronze Wire Mesh

Commercial bronze mesh offers a warm reddish-gold appearance for screening, filtration and decorative applications. Supply extends to 250 mesh. Select wire diameter and material condition to meet the required rigidity and forming needs.

US grade reference: UNS C22000 is known as “Commercial Bronze, 90%,” but is a copper-zinc alloy: nominally 90% copper and 10% zinc, with a specified copper range of 89.0–91.0%. It is distinct from tin bronze and phosphor bronze.

Phosphor Bronze Wire Mesh

Phosphor bronze is a copper-tin-phosphorus alloy selected where strength, resilience and resistance to repeated flexing are relevant. Actual behavior depends on wire size and temper. Supply extends to 325 mesh for finer woven specifications.

US grade reference: UNS C51000, phosphor bronze 5% A, specifies 4.2–5.8% tin and 0.03–0.35% phosphorus, with copper as the remainder.

Grade references follow the Copper Development Association profiles for C11000, C27000, C22000 and C51000. ASTM B134/B134M covers brass wire, including C22000 and C27000; ASTM B159/B159M covers phosphor bronze wire, including C51000. These are wire material specification references. Required grade, temper, standard and documentation are agreed for the order.

CWM-1: Copper Wire Mesh

CWM-2: Brass Wire Mesh

CWM-3: Bronze Wire Mesh

Supply Specifications and Custom Processing

Mesh count: all specifications listed in the table are available in the materials indicated. Other mesh counts can be customized; pure copper specifications around 200–250 mesh can be arranged to suit the required wire and opening.
Wire diameter: the table shows the regular supply range of 0.0356–1.6002 mm across the listed specifications. Diameters outside this range can be customized.
Aperture: listed openings are nominal geometric dimensions, ranging from 0.0432 to 7.27 mm in the table.
Weave options: plain weave, twill weave, Dutch weave and reverse Dutch weave can be supplied in copper, brass, commercial bronze and phosphor bronze. The table below applies to plain weave; specify separate requirements for other weaves.
Common stock widths: 1 m and 1.2 m. Other widths can be customized.
Regular roll length: 30 m. Other lengths can be customized.
Cutting and forming: mesh rolls, rectangular pieces, circular discs, custom-shaped cut pieces and formed mesh parts.
Surface condition: bare copper in the as-woven condition and tinned copper are common options. Passivation or cleaning and degreasing can be arranged to the agreed requirements.
Packing: paper tube, waterproof paper wrapping and wooden case.

Plain Weave Copper Alloy Mesh Specification Table

Millimetre values are the reference dimensions. Inch values are converted using 1 inch = 25.4 mm and rounded to five decimal places. Open area is expressed as a percentage. For square plain weave, nominal open area = [opening ÷ (opening + wire diameter)]² × 100. Rounded dimensions may produce small differences from nominal mesh count calculations.

Specification of Copper Woven Wire Mesh
Code	MESH	WIRE DIA		APERTURE		OPEN AREA	Material
Code	PER INCH	MM	INCH	MM	INCH	%	Material
CWM003160	3 × 3	1.6002	0.06300	6.858	0.27000	65.74	Copper, Brass, Bronze, Phos Bronze
CWM003120	3 × 3	1.2	0.04724	7.27	0.28622	73.67	Copper, Brass, Bronze, Phos Bronze
CWM004119	4 × 4	1.1938	0.04700	5.1562	0.20300	65.93	Copper, Brass, Bronze, Phos Bronze
CWM005100	5 × 5	1	0.03937	4.08	0.16063	64.50	Copper, Brass, Bronze, Phos Bronze
CWM006089	6 × 6	0.889	0.03500	3.3528	0.13200	62.48	Copper, Brass, Bronze, Phos Bronze
CWM007080	7 × 7	0.8	0.03150	2.83	0.11142	60.78	Copper, Brass, Bronze, Phos Bronze
CWM008071	8 × 8	0.7112	0.02800	2.4638	0.09700	60.22	Copper, Brass, Bronze, Phos Bronze
CWM010051	10 × 10	0.51	0.02008	2.03	0.07992	63.87	Copper, Brass, Bronze, Phos Bronze
CWM010064	10 × 10	0.635	0.02500	1.905	0.07500	56.25	Copper, Brass, Bronze, Phos Bronze
CWM012051	12 × 12	0.508	0.02000	1.6	0.06299	57.61	Copper, Brass, Bronze, Phos Bronze
CWM012058	12 × 12	0.5842	0.02300	1.524	0.06000	52.26	Copper, Brass, Bronze, Phos Bronze
CWM014051	14 × 14	0.508	0.02000	1.3	0.05118	51.70	Copper, Brass, Bronze, Phos Bronze
CWM016046	16 × 16	0.4572	0.01800	1.143	0.04500	51.02	Copper, Brass, Bronze, Phos Bronze
CWM018043	18 × 18	0.4318	0.01700	0.9906	0.03900	48.50	Copper, Brass, Bronze, Phos Bronze
CWM018050	18 × 18	0.5	0.01969	0.91	0.03583	41.65	Copper, Brass, Bronze, Phos Bronze
CWM020041	20 × 20	0.4064	0.01600	0.8636	0.03400	46.24	Copper, Brass, Bronze, Phos Bronze
CWM020045	20 × 20	0.45	0.01772	0.82	0.03228	41.69	Copper, Brass, Bronze, Phos Bronze
CWM024036	24 × 24	0.3556	0.01400	0.7112	0.02800	44.44	Copper, Brass, Bronze, Phos Bronze
CWM028030	28 × 28	0.3	0.01181	0.61	0.02402	44.93	Copper, Brass, Bronze, Phos Bronze
CWM030025	30 × 30	0.25	0.00984	0.6	0.02362	49.83	Copper, Brass, Bronze, Phos Bronze
CWM030030	30 × 30	0.3048	0.01200	0.5334	0.02100	40.50	Copper, Brass, Bronze, Phos Bronze
CWM030033	30 × 30	0.33	0.01299	0.52	0.02047	37.43	Copper, Brass, Bronze, Phos Bronze
CWM040025	40 × 40	0.254	0.01000	0.381	0.01500	36.00	Copper, Brass, Bronze, Phos Bronze
CWM050020	50 × 50	0.203	0.00799	0.31	0.01220	36.52	Copper, Brass, Bronze, Phos Bronze
CWM050023	50 × 50	0.2286	0.00900	0.2794	0.01100	30.25	Copper, Brass, Bronze, Phos Bronze
CWM060018	60 × 60	0.178	0.00701	0.25	0.00984	34.12	Copper, Brass, Bronze, Phos Bronze
CWM060019	60 × 60	0.1905	0.00750	0.2286	0.00900	29.75	Copper, Brass, Bronze, Phos Bronze
CWM070012	70 × 70	0.12	0.00472	0.24	0.00945	44.44	Copper, Brass, Bronze, Phos Bronze
CWM080014	80 × 80	0.1397	0.00550	0.1778	0.00700	31.36	Copper, Brass, Bronze, Phos Bronze
CWM080017	80 × 80	0.165	0.00650	0.15	0.00591	22.68	Copper, Brass, Bronze, Phos Bronze
CWM090013	90 × 90	0.127	0.00500	0.16	0.00630	31.08	Copper, Brass, Bronze, Phos Bronze
CWM100100	100 × 100	0.1	0.00394	0.15	0.00591	36.00	Copper, Brass, Bronze, Phos Bronze
CWM100114	100 × 100	0.1143	0.00450	0.1524	0.00600	32.65	Copper, Brass, Bronze, Phos Bronze
CWM110102	110 × 110	0.1016	0.00400	0.1295	0.00510	31.40	Copper, Brass, Bronze, Phos Bronze
CWM120094	120 × 120	0.094	0.00370	0.1168	0.00460	30.70	Copper, Brass, Bronze, Phos Bronze
CWM150066	150 × 150	0.066	0.00260	0.1041	0.00410	37.45	Copper, Brass, Bronze, Phos Bronze
CWM160064	160 × 160	0.0635	0.00250	0.0965	0.00380	36.38	Copper, Brass, Bronze, Phos Bronze
CWM180050	180 × 180	0.05	0.00197	0.09	0.00354	41.33	Copper, Brass, Bronze, Phos Bronze
CWM180058	180 × 180	0.0584	0.00230	0.0838	0.00330	34.73	Copper, Brass, Bronze, Phos Bronze
CWM200053	200 × 200	0.0533	0.00210	0.0737	0.00290	33.68	Copper, Brass, Bronze, Phos Bronze
CWM250041	250 × 250	0.0406	0.00160	0.061	0.00240	36.05	Brass, Bronze, Phos Bronze
CWM270041	270 × 270	0.0406	0.00160	0.0533	0.00210	32.22	Phos Bronze
CWM300039	300 × 300	0.039	0.00154	0.0457	0.00180	29.11	Phos Bronze
CWM325036	325 × 325	0.0356	0.00140	0.0432	0.00170	30.05	Phos Bronze

Quality Inspection and Material Documentation

Routine outgoing inspection includes:

Material grade verification.
Mesh count, wire diameter and opening.
Dimensions, roll width and specified cutting tolerances.
Weaving defects, including broken wires, skipped interlacings, sparse areas and holes.
Appearance, including oxidation, oil contamination and burrs.

Mill test certificates (MTCs) and spectrometric composition testing can be provided. Customer-specified third-party inspection, such as SGS, can be arranged on request; cost and lead time are agreed separately.

Filtration accuracy, pressure drop and efficiency testing are available on request under agreed test conditions. These performance tests are not part of routine inspection for every batch.

Cleaning and Handling

Rinse with low-pressure clean water or deionized water, or use a controlled compressed-air backflush.
For oily deposits, soak in a neutral detergent or mild alkaline degreasing solution, then clean gently with a soft brush and rinse.
Fine mesh can be cleaned ultrasonically with suitable cleaning conditions and support to avoid deformation.

Avoid steel-wire brushes, hard scraping and prolonged soaking in strong acids or alkalis. Avoid chloride-containing or hydrochloric-acid cleaning solutions, especially for brass because of dezincification risk. Do not use open-flame drying, excessive heat or forceful bending of fine mesh. For tinned copper, avoid cleaners that attack the tin coating. Select a cleaning method compatible with the alloy, surface treatment and retained deposits.

Copper Wire Mesh FAQs

What mesh counts can Filtalloy supply?

The listed plain weave specifications span 3–325 mesh across the materials indicated. Pure copper is available up to approximately 200–250 mesh, brass and commercial bronze up to 250 mesh, and phosphor bronze up to 325 mesh. Specifications outside the table can be customized.

Are all weave types available in each copper alloy?

Yes. Plain weave, twill weave, Dutch weave and reverse Dutch weave can be supplied in copper, brass, commercial bronze and phosphor bronze. The specification table on this page applies to plain weave.

Does nominal aperture specify filtration accuracy?

Nominal aperture is a geometric description of the mesh opening. Filtration accuracy, pressure drop and efficiency depend on the medium, flow conditions, particle characteristics and assembly. Performance testing can be arranged on request under agreed conditions.

Can copper mesh be supplied as cut or formed parts?

Yes. We supply rolls, rectangular cut pieces, circular discs, custom-shaped pieces and formed mesh parts. Common stock widths are 1 m and 1.2 m, with a regular roll length of 30 m; other dimensions can be customized.

Which surface treatments are available?

Bare copper in the as-woven condition and tinned copper are common options. Passivation or cleaning and degreasing can be arranged to the agreed requirements.

Can you provide material certificates and third-party inspection?

Mill test certificates and spectrometric composition testing can be provided. Customer-specified third-party inspection, including SGS, can be arranged on request, with cost and lead time agreed separately. Performance testing is not a routine requirement for every batch.

Discuss Your Copper Mesh Specification

Send the material grade, mesh count or opening, wire diameter, weave, width and length, quantity, surface condition and application. For cut or formed parts, include a drawing and dimensional tolerances. Specify any material certificates or performance tests required so we can confirm a suitable supply specification.

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