Particle size comparison Chart

 
 
Measurements
 
Sieve (Screen)
 
Millimeters
 
Microns (µ)
 
Inches
 
Mils
 
U.S. Std. Sieve Designation*
 
Tyler Std. Sieve
 
0.0254
 
25.4
0.00100
 
1.00
 
-
 
-
 
0.0318
 
31.8
0.00125
 
1.25
 
-
 
-
 
0.0381
 
38.1
0.00150
 
1.50
 
38 µm (No. 400)
 
400 mesh
 
0.0445
 
44.5
0.00175
 
1.75
 
45 µm (No. 325)
 
325 mesh
 
0.0508
 
50.8
0.00200
 
2.00
 
-
 
-
 
0.0533
 
53.3
0.00210
 
2.10
 
53 µm (No. 270)
 
270 mesh
 
0.0635
 
63.5
0.00250
 
2.50
 
63 µm (No. 230)
 
250 mesh
 
0.0737
 
73.7
0.00290
 
2.90
 
75 µm (No. 200)
 
200 mesh
 
0.0762
 
76.2
0.00300
 
3.00
 
-
 
-
 
0.0889
 
88.9
0.00350
 
3.50
 
90 µm (No. 170)
 
170 mesh
 
0.1016
 
101.6
0.00400
 
4.00
 
-
 
-
 
0.1050
 
105.0
0.00413
 
4.13
 
106 µm (No. 140)
 
150 mesh
 
0.1250
 
125.0
0.00492
 
4.92
 
125 µm (No. 120)
 
115 mesh
 
0.1490
 
149.0
0.00587
 
5.87
 
150 µm (No. 100)
 
100 mesh
 
0.1770
 
177.0
0.00697
 
6.97
 
180 µm (No. 80)
 
80 mesh
 
0.2500
 
250.0
0.00984
 
9.84
 
250 µm (No. 60)
 
60 mesh
 
0.4200
 
420.0
0.01654
 
16.54
 
425 µm (No. 40)
 
35 mesh
 
0.8410
 
841.0
0.03311
 
33.11
 
850 µm (No. 20)
 
20 mesh
 
1.0000
 
1000.0
0.03937
 
39.37
 
1 mm (No. 18)
 
16 mesh

 

SOURCE

What is Torch Brazing ?

Brazing vs Welding

Buy a Brazing Torch/ Reviews

Advantages of Torch Brazing

Limitations of Torch Brazing

Torch Brazing company

Brazing Tips

Heat Sources of Brazing

Cleaning the Braze joint

Particle Size chart

Brazing Paste

Eye Protection for Brazing

All Torch Brazing Links