Screening, Sizing and Sifting with Wire Cloth

International Wire Cloth Sieve Comparison Table

INTERNATIONAL

ISO 565 (TBL 2)

1987

AMERICAN

U.S. STD/ASTM E 11

1995

BRITISH

BS 410

1986

FRENCH

AFNOR NFX11-501

1987

GERMAN

DIN 4188

1977

Nominal Opening

Millimeters/Microns

Alternative

Inch/Mesh

Aperture

mm/Ám

Equivalent

BS MESH

Opening

mm/Ám

Equivalent

TAMIS No.

Aperture

mm

Approx.

DIN No.

26.50mm 1.06 " 26.50mm   25.0mm   25.00  
25.00mm* 1 " --   22.40mm   22.40  
22.40mm 7/8" 22.40mm   20.00mm   20.00  
19.00mm 3/4" 19.00mm   18.00mm   18.00  
16.00mm 5/8" 16.00mm   16.00mm   16.00  
13.20mm .530" 13.20mm   14.00mm   14.00  
12.50mm* 1/2" --   12.50mm   12.50  
11.20mm 7/16" 11.20mm   11.20mm   11.20  
9.50mm 3/8" 9.50mm   10.00mm   10.00  
-- -- --   9.00mm   9.00  
INTERNATIONAL

ISO 565 (TBL 2)

1987

AMERICAN

U.S. STD/ASTM E 11

1995

BRITISH

BS 410

1986

FRENCH

AFNOR NFX11-501

1987

GERMAN

DIN 4188

1977

Nominal Opening

Millimeters/Microns

Alternative

Inch/Mesh

Aperture

mm/Ám

Equivalent

BS MESH

Opening

mm/Ám

Equivalent

TAMIS No.

Aperture

mm

Approx.

DIN No.

8.00mm 5/16" 8.00mm   8.00mm   8.00  
6.70mm .265" 6.70mm   7.10mm   7.10  
6.30mm* 1/4" --   6.30mm   6.30  
5.60mm 3-1/2 sieve 5.60mm 3 5.60mm   5.60  
4.75mm 4 sieve 4.75mm 3-1/2 5.00mm 38 5.00  
-- -- -- -- 4.50mm -- 4.50  
4.00mm 5 sieve 4.00mm 4 4.00 37 4.00 2E
3.35mm 6 sieve 3.35mm 5 3.55mm -- 3.55  
-- -- -- -- 3.15mm 36 3.15  
2.80mm 7 sieve 2.80mm 6 2.80mm -- 2.80  
2.36mm 8 sieve 2.36mm 7 2.50mm 35 2.50  
INTERNATIONAL

ISO 565 (TBL 2)

1987

AMERICAN

U.S. STD/ASTM E 11

1995

BRITISH

BS 410

1986

FRENCH

AFNOR NFX11-501

1987

GERMAN

DIN 4188

1977

Nominal Opening

Millimeters/Microns

Alternative

Inch/Mesh

Aperture

mm/Ám

Equivalent

BS MESH

Opening

mm/Ám

Equivalent

TAMIS No.

Aperture

mm

Approx.

DIN No.

-- -- -- -- 2.24mm -- 2.24 --
2.00mm 10 sieve 2.00mm 8 2.00mm 34 2.00 3E
1.70mm 12 sieve 1.70mm 10 1.80mm -- 1.80 --
-- -- -- -- 1.60mm 33 1.60 --
-- -- -- -- -- -- 1.50* 4
1.40mm 14 sieve 1.40mm 12 1.40mm -- 1.40 --
1.18mm 16 sieve 1.18mm 14 1.25mm 32 1.25 --
-- -- -- -- -- -- 1.20* 5
-- -- -- -- 1.12mm -- 1.12 --
1.00mm 18 sieve 1.00mm 16 1.00mm 31 1.00 6
850Ám 20 sieve 850Ám 18 900Ám -- 0.900 --
INTERNATIONAL

ISO 565 (TBL 2)

1987

AMERICAN

U.S. STD/ASTM E 11

1995

BRITISH

BS 410

1986

FRENCH

AFNOR NFX11-501

1987

GERMAN

DIN 4188

1977

Nominal Opening

Millimeters/Microns

Alternative

Inch/Mesh

Aperture

mm/Ám

Equivalent

BS MESH

Opening

mm/Ám

Equivalent

TAMIS No.

Aperture

mm

Approx.

DIN No.

-- -- -- -- 800Ám 30 0.800 --
-- -- -- -- -- -- 0.750* 8
710Ám 25 sieve 710Ám 22 710Ám -- 0.710 --
-- -- -- -- 630Ám 29 0.630 --
600Ám 30 sieve 600Ám 25 -- -- 0.600* 10
-- -- -- -- 560Ám -- 0.560 --
500Ám 35 sieve 500Ám 30 500Ám 28 0.500 12
-- -- -- -- 450Ám -- 0.450 --
425Ám 40 sieve 425Ám 36 -- -- 0.430 14
-- -- -- -- 400Ám 27 0.400 16
355Ám 45 sieve 355Ám 44 355Ám -- 0.355 --
INTERNATIONAL

ISO 565 (TBL 2)

1987

AMERICAN

U.S. STD/ASTM E 11

1995

BRITISH

BS 410

1986

FRENCH

AFNOR NFX11-501

1987

GERMAN

DIN 4188

1977

Nominal Opening

Millimeters/Microns

Alternative

Inch/Mesh

Aperture

mm/Ám

Equivalent

BS MESH

Opening

mm/Ám

Equivalent

TAMIS No.

Aperture

mm

Approx.

DIN No.

-- -- -- -- -- -- 0.340* 18E
-- -- -- -- 315Ám 26 0.315 --
300Ám 50 sieve 300Ám 52 -- -- 0.300* 20
-- -- -- -- 280Ám -- 0.280 --
250Ám 60 sieve 250Ám 60 250Ám 25 0.250 24
212Ám 70 sieve 212Ám 72 224Ám -- 0.224 --
-- -- -- -- 200Ám 24 0.200 30
180Ám 80 sieve 180Ám 85 180Ám -- 0.180 --
-- -- -- -- -- -- 0.170* 35E
-- -- -- -- 160Ám 23 0.160 --
150Ám 100 sieve 150Ám 100 -- -- 0.150* 40
INTERNATIONAL

ISO 565 (TBL 2)

1987

AMERICAN

U.S. STD/ASTM E 11

1995

BRITISH

BS 410

1986

FRENCH

AFNOR NFX11-501

1987

GERMAN

DIN 4188

1977

Nominal Opening

Millimeters/Microns

Alternative

Inch/Mesh

Aperture

mm/Ám

Equivalent

BS MESH

Opening

mm/Ám

Equivalent

TAMIS No.

Aperture

mm

Approx.

DIN No.

-- -- -- -- 140Ám -- 0.140 --
125Ám 120 sieve 125Ám 120 125Ám 22 0.125 --
-- -- -- -- -- -- 0.120* 50
106Ám 140 sieve 106Ám 150 112Ám -- 0.112 --
-- -- -- -- 100Ám 21 0.100 60
90Ám 170 sieve 90Ám 170 90Ám -- 0.090 70
-- -- -- -- 80Ám 20 0.080 --
75Ám 200 sieve 75Ám 200 -- -- 0.075* 80
-- -- -- -- 71Ám -- 0.071 --
-- -- -- -- -- -- 0.067* 90E
63Ám 230 sieve 63Ám 240 63Ám 19 0.063 --
INTERNATIONAL

ISO 565 (TBL 2)

1987

AMERICAN

U.S. STD/ASTM E 11

1995

BRITISH

BS 410

1986

FRENCH

AFNOR NFX11-501

1987

GERMAN

DIN 4188

1977

Nominal Opening

Millimeters/Microns

Alternative

Inch/Mesh

Aperture

mm/Ám

Equivalent

BS MESH

Opening

mm/Ám

Equivalent

TAMIS No.

Aperture

mm

Approx.

DIN No.

-- -- -- -- -- -- 0.060* 100
53Ám 270 sieve 53Ám 300 56Ám -- 0.056 110
-- -- -- -- 50Ám 18 0.050 120
45Ám 325 sieve 45Ám 350 45Ám -- 0.045 --
38Ám 400 sieve 38Ám 400 40Ám 17 0.040 --
-- -- -- -- 36Ám -- 0.036 130
32Ám 450 sieve 32Ám 440 32Ám -- 0.032 --
25Ám 500 sieve -- -- 25Ám -- 0.025 200
20Ám 635 sieve -- -- 20Ám -- 0.020 --
16Ám -- -- -- -- -- 0.016 --
10Ám -- -- -- -- -- 0.010 --
*Figures included for commonality
1,000 micrometers (microns) = 1.00mm

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Last modified: December 23, 2012