Surface Roughness and Abrasive Grain Size

U.S. mesh size and surface roughness

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Relationship between abrasive grain size and workpiece surface roughness:

Surface Roughness

Ra

(μm)

Abrasive Grain Size

(U.S. mesh size)
0.7 - 1.1 46
0.35 - 0.7 60
0.2 - 0.4 80
0.17 - 0.25 100
0.14 - 0.2 120
0.12 - 0.17 150
0.1 - 0.14 180
0.08 - 0.12 220

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