Screen mesh count and pore size specification table

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This post was last edited by Thank goodness you're here on 2015-11-16 at 15:31. The factors to consider when choosing a stainless steel sieve include: material, weaving method, mesh size, wire diameter, mesh width, porosity, and pore size. The commonly used mesh sizes are 635 mesh, 600 mesh, 500 mesh, 450 mesh, 400 mesh, 370 mesh, 363 mesh, 350 mesh, 325 mesh, 300 mesh, 280 mesh, 270 mesh, and 250 mesh. Mesh count is a common parameter for stainless steel screens used in the filtration and screening industry; it generally refers to the number of mesh holes per 1 inch/25.4 mm of length, which is also the same as the number of wires in the screen. This parameter was originally a term established by screen manufacturers; in the 1980s and 1990s, stainless steel screens were mainly used for export, so inches were used as the unit of measurement for length. For example, a 635-mesh sieve means that there are 635 mesh holes, or 635 stainless steel wires, within 25.4 mm. It can therefore be concluded that sieves/filters with the same mesh number have the same “wire diameter + pore size”. Different wire diameters correspond to different pore sizes, and screens with different mesh numbers may have similar pore sizes. This phenomenon is particularly common with screens ranging from 300 to 400 mesh. For example, for a 350-mesh twill woven sieve, if the wire diameter is 0.030 mm, the corresponding pore size is 25.4/350 – 0.030 = 0.043 mm ； For a 325-mesh twill-woven sieve, if the wire diameter is 0.035 mm, the corresponding pore size is 25.4/325 – 0.035 = 0.043 mm. In the screening industry, it is necessary to consider not only the mesh size of the screen but also the particle size of the powder material being screened, as well as the wire diameter and pore size of the screen. (The above data is kindly provided by Wuxi Tianlong Screen Mesh Co., Ltd.) Specification table for square-hole stainless steel wire mesh: Mesh size, wire diameter, aperture, open area %, mesh weight (pounds)/100 sq. ft. Inches, millimeters, inches, millimeters. 1×10: 0.08, 2.03, 0.92, 23.37, 84.64, 1.1. 2×20: 0.063, 1.6, 0.437, 11.17, 6.45, 1.2. 3×30: 0.054, 1.37, 0.279, 7.09, 70.15, 6.7. 4×40: 0.063, 1.6, 0.187, 4.75, 561, 104.8. 4×40: 0.047, 1.19, 0.203, 5.16, 65.95, 7.6. 5×50: 0.041, 1.04, 0.159, 4.04, 63.25, 4.9. 6×60: 0.035, 0.89, 0.132, 3.35, 62.74, 8.1. 8×80: 0.028, 0.71, 0.097, 2.46, 60.24, 1.1. 10×100: 0.025, 0.64, 0.075, 1.91, 56.34, 1.2. 10×100: 0.02, 0.51, 0.082, 2.03, 6426.1. 12×120: 0.023, 0.584, 0.061, 1.52, 51.84, 2.2. 12×120: 0.02, 0.508, 0.063, 1.65, 7.23, 1.6. 14×140: 0.023, 0.584, 0.048, 1.22, 45.24, 9.8. 14×140: 0.02, 0.508, 0.051, 1.35, 137.2. 16×160: 0.018, 0.457, 0.0445, 1.13, 50.73, 4.5. 18×180: 0.017, 0.432, 0.0386, 0.98, 48.33, 4.8. 20×200: 0.02, 0.508, 0.03, 0.76, 3655.2. 20×200: 0.016, 0.406, 0.034, 0.86, 46.23, 4.4. 24×240: 0.014, 0.356, 0.0277, 0.74, 44.23, 1.8. 30×300: 0.013, 0.33, 0.0203, 0.52, 37.13, 4.8. 30×300: 0.012, 0.305, 0.0213, 0.54, 40.82, 9.4. 30×300: 0.009, 0.229, 0.0243, 0.62, 53.11, 6.1. 35×350: 0.011, 0.279, 0.0176, 0.45, 37.92, 9. 40×400: 0.01, 0.254, 0.015, 0.38, 3627.6. 50×500: 0.009, 0.229, 0.011, 0.28, 30.32, 8.4. 50×500: 0.008, 0.203, 0.012, 0.31, 3622.1. 60×600: 0.0075, 0.191, 0.0092, 0.23, 30.52, 3.7. 60×600: 0.007, 0.178, 0.0097, 0.25, 33.9, 20.4. 70×700: 0.0065, 0.165, 0.0078, 0.22, 9.82, 20.8. 80×800: 0.0065, 0.165, 0.006, 0.15, 2323.2. 80×800: 0.0055, 0.14, 0.007, 0.18, 1316.9. 90×900: 0.005, 0.127, 0.0061, 0.16, 30.11, 5.8. 100×1000: 0.0045, 0.114, 0.0055, 0.14, 30.31, 4.2. 100×1000: 0.004, 0.102, 0.006, 0.15, 3611. 100×1000: 0.0035, 0.089, 0.0065, 0.17, 42.38, 8.3. 110×1100: 0.004, 0.1016, 0.0051, 0.1295, 30.71, 2.4. 120×1200: 0.0037, 0.094, 0.0064, 0.1168, 30.71, 1.6. 150×1500: 0.0026, 0.066, 0.0041, 0.1041, 37.47, 7.1. 160×1600: 0.0025, 0.0635, 0.0038, 0.0965, 36.45, 5.94. 180×1800: 0.0023, 0.0584, 0.0033, 0.0838, 34.76, 6.7. 200×2000: 0.0021, 0.0533, 0.0029, 0.0737, 33.66, 6.2. 250×2500: 0.0016, 0.0406, 0.0024, 0.0613, 64.4. 270×2700: 0.0016, 0.0406, 0.0021, 0.0533, 32.24, 4.7. 300×3000: 0.0051, 0.0381, 0.0018, 0.0457, 29.73, 3.04. 325×3250: 0.0014, 0.0356, 0.0017, 0.0432, 304.4. 400×4000: 0.001, 0.0254, 0.0015, 0.0373, 63.3. 500×5000: 0.001, 0.0254, 0.001, 0.0254, 253.8. 635×6350: 0.0008, 0.0203, 0.0008, 0.0203, 252.63