Conversion Chart Abrasives - Grit Sizes

Use this Conversion chart to view the different standards and as a guide to know when you can start using Micro-mesh. Use conventional abrasives as normal prior to going into the Micro-mesh stage.

Definitions:

FEPA (Fédération Européenne des Fabricants de Produits Abrasifs) Federation of European Producers of Abrasives. The FEPA distinquishes between grain for sanding paper (FEPA P) and grain for sharpening stones or wheels (FEPA F) The decisive factor for comparison is FEPA F. FEPA P is only used for sanding paper.
JIS (Japanese Industrial Standard) issued by the Japanese Standards Association.
ANSI American National Standards Institute.
MICRON (μ) is the letter "micron" in the Greek alphabet. As measuring unit it describes 1 thousandth of a millimeter (1 μ = 0.001 mm). A Micron row is added to each FEPA P, FEPA F, JIS und ANSI row for comparison.
MM Micro-mesh grit in comparison to other standards.

The grit sizes are defined by the number of lines per inch (25.4 mm) length of each sieve e.g. 150 lines per inch. Abrasives grit 150 will pass this sieve. This chart is a general overview only. We are not responsible for any errors.