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Standard Sieve Sizes

September.17 Coal

Sieving is a practical and cost effective way to determine particle size distributions for coarser materials. Two accepted scales are the US Sieve and Tyler Equivalent, sometimes called Tyler Mesh Size or Tyler Standard Sieve Series. The most common mesh opening sizes for these scales are given in the table below and provide an indication of particle sizes.

Mesh Size  (microns) TYLER ASTM-E11 BS-410 DIN-4188
µm Mesh No. Mesh mm
5 2500   2500 0.005
10 1250   1250 0.010
15 800   800 0.015
20 625   625 0.020
22       0.022
25 500   500 0.025
28       0.028
32       0.032
36       0.036
38 400 400 400  
40       0.040
45 325 325 350 0.045
50       0.050
53 270 270 300  
56       0.056
63 250 230 240 0.063
71       0.071
75 200 200 200  
80       0.080
90 170 170 170 0.090
100       0.100
106 150 140 150  
112       0.112
125 115 120 120 0.125
140       0.140
150 100 100 100  
160       0.160
180 80 80 85 0.180
200       0.200
212 65 70 72  
250 60 60 60 0.250
280       0.280
300 48 50 52  
315       0.315
355 42 45 44 0.355
400       0.400
425 35 40 36  
450       0.450
500 32 35 30 0.500
560       0.560
600 28 30 25  
630       0.630
710 24 25 22 0.710
800       0.800
850 20 20 18  
900       0.900
1000 16 18 16 1.0
1120       1.12
1180 14 16 14  
1250       1.25
1400 12 14 12 1.4
1600       1.6
1700 10 12 10  
1800       1.8
2000 9 10 8 2.0
2240       2.24
2360 8 8 7  
2500       2.5
2800 7 7 6 2.8
3150       3.15
3350 6 6 5  
3550       3.55
4000 5 5 4 4.0
4500       4.5
4750 4 4 3.5  
5000       5.0

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