Diamond Grit Size. The diamond grit designations for diamond lapidary tools actually represent a range of diamond particle sizes used to manufacture that designation. GRIT SIZE CHARTEffect on Grit Sizes for Diamond CBN on Surface Finish Ra Micron µm - estimated finishing range according to grit sizes.
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These values also give you an insight into the type of finish youd expect from a diamond abrasive. USA ANSI B7416-1971 R1980 JAPAN JIS4130-1982. Ad Learn How to Buy a Diamond with Blue Niles Diamond Buying Guide Today.
Mainly for contest cutting or hobby cutters.
DIAMOND GRIT SIZE DESIGNATIONS ANSI B7416 ISO 565 FEPA ISO 6106-79 DIN 848 Juni 65 DIN 4188 BS 1987. To make an example a grit size with 20 to 30 micrometer large diamonds is designated by one manufacturer as a D25 and by another as a MD20. Metal bond grinding wheel. Medium GrindingRa Micron µm048 - 132 Rough GrindingRa Micron µm18 - 361.
