Machinery's Handbook, 31st Edition
Meshes, Sieves, and Screens 1071 As indicated by the fragment below from Table 1, the specified particles are therefore smaller than 40 mesh and larger than 100 mesh. Particles trapped above the 100 mesh screen range in size from greater than 149 µ m to 400 µ m. Particles smaller than 149 mi- cron are passed through the 100 mesh screen. Approximately 90 percent of the particles trapped will fit within the specified range. Sieve size (mm) Opening Standard Mesh (in.) ( µ m) US Tyler … … … … … 0.4 0.0165 400 40 35 0.149 0.0059 149 100 100 Sieves and screens are stacked with the largest opening (smallest mesh size) above, and the smallest opening (largest mesh size) below, as in Fig. 2. D S I E V E S E R I E S A.S.T.M. E-11 0.0165 IN 0.425 MM SPECIFICATIONS OPENING MICRONS 425
U S S T A N D A R D S I E V A.S.T.M. E-11 0.0059 IN OPENING SPECIFICATIONS SIEVE NO. 100
MICRONS 150
Fig. 2. Table 2. Standard Sieves and Mesh Sizes
Mesh Size µ m
Mesh Size µ m
ASTM E-11 No.
BS 410 Mesh
DIN 4188 mm 0.005 0.01 0.015 0.02 0.022 0.025 0.028 0.032 0.036 0.04 0.045 0.05 0.056 0.063 0.071
ASTM E-11 No.
BS 410 Mesh
DIN 4188 mm 0.112 0.125 0.14 …
TYLER Mesh
TYLER Mesh
5
2500 1250 800 625
… 2500 … 1250 … 800 … 625
106 112 125 140 150 160 180 200 212 280 300 315 400 425 450
150
140
150
10 15 20 22 25 28 32 36 38 40 45 50 53 56 63 71
… … …
115
120
120
… … …
… … …
100
100
100
…
500
… 500
… … …
0.16 0.18 0.2 0.25 0.28 …
… … … … … … … … …
80
80
85
… … …
65 60
70 60
72 60
400
400
400
… 250
… … …
… … …
325
325
350
48
50
52
…
… … …
… … …
0.315 0.355
270
270
300
… 355
42
45
44
… … …
… … …
0.4 …
250
230
240
35
40
36
… … …
… … …
0.45
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