FEPA Gradation Chart

FEPA Particle size distribution for our fine Boron Carbide and Silicon Carbides
Grading: FEPA Standard

Grit size	3% max., larger than, um	50% min., in size range, um	94% min., larger than, um	Grit size	3% max., larger than, um	50% min., in size range, um	94% min., larger than, um
F12	2000	N/A	1400	F120	125	N/A	90
F14	1700	N/A	1180	F150	106	N/A	63
F16	1400	N/A	1000	F180	90	N/A	53
F20	1180	N/A	850	F220	75	50.0-56.0	45
F24	850	N/A	600	F240	70	42.5-46.5	28
F30	710	N/A	500	F280	59	35.0-38.0	22
F36	600	N/A	425	F320	49	27.7-30.7	16.5
F40	500	N/A	355	F360	40	21.3-24.3	12
F46	425	N/A	300	F400	32	16.3-18.3	8
F54	355	N/A	250	F500	25	11.8-13.8	5
F60	300	N/A	212	F600	19	8.3-10.3	3
F70	250	N/A	180	F800	14	5.5-7.5	2
F80	212	N/A	150	F1000	10	3.7-5.3	1
F90	180	N/A	125	F1200	7	2.5-3.5	1
F100	150	N/A	106

Note: JIS and P Standard graded powder is available on request