40 Mesh to Micron Conversion
Standard sieve is a tool for particle size classification and particle size detection of substances. It is a sieve that has been inspected, appraised, and deemed to comply with the agreement by a designated organization. Internationally, mesh size is expressed as the number of holes per inch. The larger the mesh size, the finer the material particle size; The smaller the mesh size, the larger the particle size of the material.
40 mesh refers to the number of mesh holes per inch of the sieve. It is a sieve used for screening coarse and large particle powders. After sieving through a 40 mesh sieve, the powder particles are divided into two parts: one is the powder above the 40 mesh sieve (It is represented as:
+40 mesh), and the other is the powder below the 40 mesh sieve (It is represented as:
-40 mesh).
Analysis of 40 Mesh to Micron
In theory, 40 mesh corresponds to 420 μm. - 40 mesh means that the majority of powder particles have a size less than 420 μm. However, in the actual screening process, due to the different morphologies of powder particles (spherical, irregular, flaky, elliptical, dendritic). This leads to significant differences in the particle size distribution of the screening results. Based on Fushel's experience, if it is a spherical powder with -40 mesh, more than 80% of the powder particles are smaller than 420 μm. If it is irregular powder, only 60% or lower proportion is less than 420 um.
40 Mesh to Micron Conversion Table
Therefore, based on years of experience in powder screening, Fushel conducted a further analysis about the distribution of 40 mesh of different shapes powders. The details are as follows:
| ASTM |
TYLER |
Microns |
Shape |
| 40 Mesh |
40 Mesh |
420 um |
/ |
| -40 Mesh |
-40 Mesh |
＜420 um (≥80%) |
Spherical |
| -40 Mesh |
-40 Mesh |
＜420 um (≤70%) |
Ellipsoidal |
| -40 Mesh |
-40 Mesh |
＜420 um (≤60%) |
Flaky |
| -40 Mesh |
-40 Mesh |
＜420 um (≤60%) |
Irregular |
| +40 Mesh |
+40 Mesh |
＞420 um (≥90%) |
Spherical |
| +40 Mesh |
+40 Mesh |
＞420 um (≥90%) |
Ellipsoidal |
| +40 Mesh |
+40 Mesh |
＞420 um (≥90%) |
Flaky |
| +40 Mesh |
+40 Mesh |
＞420 um (≥90%) |
Irregular |
The above only provides further explanation and analysis on the conversion of
40 Mesh to Micron. For more
Mesh to Micron Conversions, Pls go to the following page:
https://www.fusnano.com/news/mesh-micron-conversion-chart.html
https://www.fusnano.com/news/100-mesh-to-micron-conversion.html
https://www.fusnano.com/news/200-mesh-to-micron-conversion.html
