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Particle Chart
 
DIANAMIC ® SUPERABRASIVE PARTICLE SIZE REFERENCE CHART
MESH SIZE TOLERANCE* FEPA** APPLICATION
16/18 .055" +/-.0080"* 1181 Extra Heavy Stock Removal
18/20 .039" +/-.0060" 1001 Extra Heavy Stock Removal
20/25 .033" +/-.0050" 851 Extra Heavy Stock Removal
20/30 .0330" +/-.0030" 852 Extra Heavy Stock Removal
25/30 .028" +/-.0050" 711 Extra Heavy Stock Removal
30/40 .0230" +/-.0045" 602 Very Heavy Stock Removal
40/50 .0160" +/-.0020" 427 Heavy Stock Removal Saw Grit
60/80 .0100" +/-.0020" 252 Coarse Roughing
80/100 .0070" +/-.0010" 181 Standard Roughing
100/120 .0060" +/-.0012" 151 General Purposes
120/140 .0050" +/-.0010" 126 General Purposes
140/170 .0040" +/-.0010" 107 General Purposes
170/200 .0035" +/-.0010" 91 General Purposes
200/230 .0029" +/-.0010" 76 General Finishing
230/270 .0025" +/-.0009" 64 Finishing
270/325 .0021" +/-.0007" 54 Fine Finishing
325/400 .0017" +/-.0005" 46 Fine Finishing

DIANAMIC ® SUPERABRASIVE MICRON SIZE REFERENCE CHART
MICRON SIZE TOLERANCE* APPLICATION
60 .0024" +/-.0009" Finishing
45 .0018" +/-.0005" Fine Finishing
30 .0012" +/-.0003" Fine Finishing
15 .0006" +/-.0002" Very Fine Finishing
9 .00035" +/-.0002" Very Fine Finishing
6 .00024" +/-.0002" Very Fine Finishing
3 .00012" +/-.0002" Very Fine Finishing

*Achievable tolerance on products after coating.
**FEPA Standard for Superabrasive Grain Sizes 1997

The DIANAMIC ® Superabrasive (Diamond and cBN) Particle Size Chart should be used as a reference guide when manufacturing steel blanks for coating.

1. A MALE RADIUS should finish SMALLER than the required finish size. SUBTRACT the particle size from the finished size to achieve the correct pre coat dimension.

2. A FEMALE RADIUS should finish LARGER than the required finish size. ADD the particle size to the finished size to achieve the correct pre coat dimension.

DIANAMIC highly recommends that we be contacted for technical support and recommendations when manufacturing blanks.


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