Grit Sizes

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Sieve Grit Designations					Micro Grit Sizes
Diamond Wheel + CBN FEPA-Standard		Diamond Wheel + CBN USA Standard ASTM-E-11-70		Norminal mesh size to ISO 6106 DIN 848 Part 1, 1980	Diamond Wheel	For comparison grit size μm
narrow	wide	narrow	wide	Norminal mesh size to ISO 6106 DIN 848 Part 1, 1980	Diamond Wheel	For comparison grit size μm
D 851	D 852	20/25	20/30	850/710	D 25	32-52
D 711	D 852	25/30	20/30	710/600	D 20	30-40
D 601	D 620	30/35	30/40	600/500	D 20	25-30
D 501	D 620	35/40	30/40	500/425	D 15	10-25
D 426	D 427	40/45	40/50	425/355	D 7	5-10
D 356	D 427	45/50	40/50	355/300	D 3	2-5
D 301		50/60		300/250	D 1	1-2
D 251	D 252	60/70		250/212	D 0,7	0,5-1
D 213	D 252	70/80		212/180	FEPA = Fédération Européenne des Fabricants de Produits Abrasifs.
D 181		80/100		180/150
D 151		100/120		150/125
D 126		120/140		125/106
D 107		140/170		106/90
D 91		170/200		90/75
D 76		200/230		75/63
D 64		230/270		63/53
D 54		270/325		53/45
D 46		325/400		45/38

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