Particle (Micron) Size Chart For All Metals Used In A Firework Device
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1Particle (Micron) Size Chart for all Metals used in a Firework Device
All firework applications submitted for approval to the U.S. Department of Transportation will need
to describe the particle (micron) size for any metal composition used in a device. The following
chart provides the conversion for standard entries from mesh to microns.
Example : Titanium is required to be larger than 100 mesh in a 1.4G device – the equivalent
conversion would be 149 microns.
US MESH
INCHES
MICRONS
MILLIMETERS
50
0.0117
297
0.297
60
0.0098
250
0.250
70
0.0083
210
0.210
80
0.0070
177
0.177
100
0.0059
149
0.149
120
0.0049
125
0.125
140
0.0041
105
0.105
170
0.0035
88
0.088
200
0.0029
74
0.074
230
0.0024
63
0.063
270
0.0021
53
0.053
325
0.0017
44
0.044
400
0.0015
37
0.037
NOTE(s):
**** T
itanium - particle size must be larger than 149 microns
****
Particle size must be provided for all metals in the Fireworks (EX) Approval Application
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Parent category: Life