Mesh specifications of woven wire mesh - Robinson Wire Cloth Ltd.

The table below provides data on most woven wire stainless steel mesh that is commercially available. Apertures range between 25 microns and 15.0 mm. We have included data for mesh count, wire diameter, standard wire gauge (swg), aperture, open area and weight. Our stock mesh specifications are indicated by an asterisk. Likewise, those meshes that are available to buy from our online shop have their mesh counts highlighted in blue. A pdf version of the table is available to download at the bottom of this page.

Please note, we have an online ‘Calculator‘ that also provides this data on mesh specifications. Our calculator allows you to determine the aperture size, open area and weight of stainless woven wire mesh. It also converts standard wire gauges into wire diameters and converts between feet/inches and metres/centimetres/millimetres. Lastly, the calculator details the AISI grade compositions of stainless steel and considers the tolerances acceptable in woven wire mesh as set out in ISO 9044:1999.

* denotes stock item; to easily purchase, those mesh counts highlighted in blue are linked to our online shop.

Mesh Count	Wire Diameter (inches)	Wire diameter (mm)	Standard wire gauge (swg)	Aperture (inches)	Aperture (mm)	Open Area (%)	Weight (kg/m2)
2 Mesh	0.079	2.00	14	0.42	10.70	71.0	4.00
2 Mesh	0.071	1.80	15	0.43	10.90	73.7	3.24
2 Mesh*	0.063	1.60	16	0.44	11.10	76.4	2.56
3 Mesh	0.079	2.00	14	0.25	6.47	58.3	6.00
3 Mesh	0.071	1.80	15	0.26	6.67	62.0	4.86
3 Mesh*	0.063	1.60	16	0.27	6.87	65.8	3.84
3 Mesh*	0.047	1.20	18	0.29	7.27	73.7	2.16
4 Mesh*	0.063	1.60	16	0.19	4.75	56.0	5.12
4 Mesh*	0.047	1.20	18	0.20	5.15	65.8	2.88
4 Mesh*	0.035	0.90	20	0.21	5.45	73.7	1.62
5 Mesh	0.063	1.60	16	0.14	3.48	46.9	6.40
5 Mesh	0.055	1.40	17	0.14	3.68	52.5	4.90
5 Mesh	0.047	1.20	18	0.15	3.88	58.3	3.60
5 Mesh*	0.039	1.00	19	0.16	4.08	64.5	2.50
5 Mesh	0.035	0.90	20	0.16	4.18	67.7	2.03
6 Mesh*	0.047	1.20	18	0.12	3.03	51.3	4.32
6 Mesh	0.039	1.00	19	0.13	3.23	58.3	3.00
6 Mesh*	0.035	0.90	20	0.13	3.33	62.0	2.43
6 Mesh	0.031	0.80	21	0.14	3.43	65.8	1.92
6 Mesh	0.028	0.71	22	0.14	3.52	69.3	1.51
7 Mesh	0.035	0.90	20	0.11	2.73	56.5	2.84
7 Mesh	0.031	0.80	21	0.11	2.83	60.8	2.24
7 Mesh*	0.028	0.71	22	0.11	2.92	64.7	1.76
8 Mesh*	0.035	0.90	20	0.090	2.28	51.3	3.24
8 Mesh	0.031	0.80	21	0.094	2.38	56.0	2.56
8 Mesh*	0.028	0.71	22	0.10	2.47	60.3	2.02
8 Mesh	0.025	0.63	23	0.10	2.55	64.3	1.59
8 Mesh	0.022	0.56	24	0.10	2.62	67.8	1.25
9 Mesh*	0.031	0.80	21	0.080	2.02	51.3	2.88
9 Mesh	0.028	0.71	22	0.083	2.11	56.0	2.27
9 Mesh	0.025	0.63	23	0.086	2.19	60.3	1.79
10 Mesh*	0.035	0.90	20	0.065	1.64	41.7	4.05
10 Mesh	0.031	0.80	21	0.069	1.74	46.9	3.20
10 Mesh*	0.028	0.71	22	0.072	1.83	51.9	2.52
10 Mesh	0.025	0.63	23	0.075	1.91	56.5	1.98
10 Mesh*	0.022	0.56	24	0.078	1.98	60.8	1.57
10 Mesh	0.020	0.50	25	0.080	2.04	64.5	1.25
10 Mesh	0.018	0.45	26	0.082	2.09	67.7	1.01
12 Mesh	0.028	0.71	22	0.055	1.41	44.2	3.02
12 Mesh*	0.025	0.63	23	0.059	1.49	49.3	2.38
12 Mesh*	0.022	0.56	24	0.061	1.56	54.1	1.88
12 Mesh*	0.020	0.50	25	0.064	1.62	58.3	1.50
12 Mesh	0.018	0.45	26	0.066	1.67	62.0	1.22
14 Mesh*	0.020	0.50	25	0.052	1.31	52.5	1.75
14 Mesh*	0.018	0.45	26	0.054	1.36	56.5	1.42
14 Mesh	0.016	0.40	27	0.056	1.41	60.8	1.12
16 Mesh*	0.022	0.56	24	0.040	1.03	41.9	2.51
16 Mesh	0.018	0.45	26	0.045	1.14	51.3	1.62
16 Mesh*	0.016	0.40	27	0.047	1.19	56.0	1.28
16 Mesh	0.015	0.38	27.5	0.048	1.21	58.3	1.13
16 Mesh*	0.014	0.355	28	0.049	1.23	60.3	1.01
16 Mesh	0.013	0.32	30	0.050	1.27	63.7	0.82
16 mesh*	0.009	0.22	34	0.054	1.36	73.8	0.40
18 Mesh *	0.018	0.45	26	0.038	0.961	46.4	1.82
18 Mesh	0.016	0.40	27	0.040	1.01	51.3	1.44
18 Mesh	0.015	0.38	27.5	0.041	1.04	53.9	1.27
18 Mesh*	0.014	0.355	28	0.042	1.06	56.0	1.13
18 Mesh	0.013	0.32	30	0.043	1.09	59.8	0.92
20 Mesh*	0.018	0.45	26	0.032	0.820	41.7	2.03
20 Mesh *	0.016	0.40	27	0.034	0.870	46.9	1.60
20 Mesh*	0.014	0.355	28	0.036	0.915	51.9	1.26
20 Mesh*	0.009	0.23	29	0.041	1.04	67.1	0.53
24 Mesh*	0.014	0.355	28	0.028	0.703	44.2	1.51
24 Mesh*	0.012	0.30	29	0.030	0.758	51.3	1.08
24 Mesh	0.007	0.19	30	0.034	0.868	67.3	0.43
28 Mesh*	0.014	0.355	28	0.022	0.552	37.0	1.76
30 Mesh	0.012	0.32	30	0.021	0.532	39.4	1.49
30 Mesh	0.011	0.29	31	0.022	0.557	43.2	1.26
30 Mesh*	0.011	0.28	32	0.022	0.567	44.8	1.18
30 Mesh	0.010	0.25	33	0.023	0.597	49.7	0.94
34 Mesh*	0.010	0.25	33	0.020	0.497	44.3	1.06
36 Mesh*	0.010	0.25	33	0.018	0.456	41.7	1.13
40 Mesh	0.010	0.25	33	0.015	0.385	36.8	1.25
40 Mesh*	0.0088	0.22	34	0.016	0.411	41.9	1.00
40 Mesh	0.0079	0.20	35	0.017	0.435	46.9	0.80
50 Mesh*	0.0088	0.22	34	0.011	0.284	31.3	1.25
50 Mesh*	0.0079	0.20	35	0.012	0.308	36.8	1.00
50 Mesh	0.0071	0.18	36	0.013	0.328	41.7	0.81
60 Mesh	0.0071	0.18	36	0.010	0.243	33.0	0.97
60 Mesh*	0.0063	0.16	37	0.010	0.263	38.7	0.77
70 Mesh	0.0063	0.16	37	0.0080	0.203	31.3	0.90
70 Mesh*	0.0059	0.15	38	0.0084	0.213	34.4	0.79
80 Mesh*	0.0055	0.14	39	0.0070	0.178	31.3	0.78
80 Mesh	0.0051	0.13	38.5	0.0074	0.188	34.9	0.68
80 Mesh	0.0049	0.13	40	0.0076	0.193	36.8	0.63
90 Mesh	0.0049	0.13	40	0.0062	0.157	31.0	0.70
90 Mesh	0.0045	0.12	41	0.0066	0.167	35.1	0.60
100 Mesh*	0.0044	0.112	41	0.0056	0.142	31.3	0.63
100 Mesh*	0.0039	0.100	42	0.0061	0.154	36.8	0.50
100 Mesh	0.0035	0.090	43	0.0065	0.164	41.7	0.41
120 Mesh*	0.0035	0.090	43	0.0048	0.122	33.0	0.49
120 Mesh	0.0031	0.080	44	0.0052	0.132	38.7	0.38
130 Mesh	0.0035	0.090	43	0.0041	0.105	29.1	0.53
140 Mesh	0.0032	0.081	44	0.0040	0.100	30.6	0.46
140 Mesh*	0.0028	0.071	45	0.0043	0.110	37.0	0.35
150 Mesh	0.0028	0.071	45	0.0039	0.098	33.7	0.38
150 Mesh*	0.0026	0.065	45.5	0.0041	0.104	38.0	0.32
150 Mesh*	0.0024	0.060	46	0.0043	0.109	41.7	0.27
160 Mesh*	0.0024	0.061	46	0.0038	0.098	37.9	0.30
180 Mesh*	0.0020	0.050	47	0.0036	0.091	41.7	0.23
180 Mesh	0.0018	0.046	47.5	0.0037	0.095	45.4	0.19
200 Mesh*	0.0020	0.050	47	0.0030	0.077	36.8	0.25
200 Mesh	0.0016	0.040	48	0.0034	0.087	46.9	0.16
230 Mesh*	0.0014	0.036	48.5	0.0029	0.074	45.4	0.15
250 Mesh*	0.0020	0.050	47	0.0020	0.052	25.8	0.31
250 Mesh*	0.0016	0.040	48	0.0024	0.062	36.8	0.20
270 Mesh*	0.0014	0.036	48.5	0.0023	0.058	38.1	0.17
300 Mesh*	0.0016	0.040	48	0.0018	0.045	27.8	0.24
300 Mesh	0.0014	0.036	48.5	0.0019	0.049	33.0	0.19
325 Mesh*	0.0014	0.036	48.5	0.0017	0.042	29.1	0.21
325 Mesh*	0.0012	0.030	49	0.0019	0.048	38.0	0.15
365 Mesh*	0.0012	0.030	49	0.0016	0.040	32.4	0.16
400 Mesh*	0.0012	0.030	49	0.0013	0.034	27.8	0.18
500 Mesh*	0.0010	0.025	50	0.0010	0.026	25.8	0.16

Interpretation of Mesh Specifications

It is worth noting that working in aperture size is, typically, far more useful than talking in terms of mesh count. This is because the aperture size of any given mesh count will depend on the wire diameter used to weave it. For example, we stock 3 different 4 meshes, as below:

4.75 mm aperture 4 mesh with a 1.6 mm wire.
5.15 mm aperture 4 mesh with a 1.2 mm wire.
5.45 mm aperture 4 mesh with a 0.9 mm wire.

So, when deciding what you need, consider the aperture size first!

A second consideration when choosing mesh is deciding on the balance between open area and wire strength. For example, let’s look at the following 2 mesh specifications that have roughly the same aperture size:

9 mesh with a 0.8 mm wire and an aperture of 2.02 mm, having an open area of 51.3 %.
10 mesh with a 0.56 mm wire and an aperture of 1.98 mm, having an open area of 60.8 %.

In the above example, the 9 mesh is woven with a much thicker and stronger wire. As a result, this reduces the open area. In contrast, the 10 mesh has a greater open area, allowing a greater throughput of material. The downside is that the thinner wire may not last as long.