Code

Porosity

ISO-4793

ASTM

P00

250....500 µm

P500

170....220 µm

Extra Coarse (XC)

P0

160....250 µm

P250

P1

100....160 µm

P160

P2

40....100 µm

P100

40....60 µm

Coarse (C)

P3

16....40 µm

P40

P4

10....16 µm

P16

Medium (M)

4....5,5 µm

Fine (F)

2....2,5 µm

Very Fine (VF)

P5

1,0....1,6 µm

P1,6

0,9....1,4 µm

Ultra Fine (UF)