Abrasive particle size number | Machining surface roughness Ra/μm | ||
Resin, vitrified bond | Metal bond | ||
80/100-100/120 100/120-170/200 170/200-270/325 325-400- W10/20 W8/12-W4/8 W4/8-W1.5/3 | - 0.16~0.63 0.08~0.32 0.04~0.16 0.02~0.08 0.01~0.04 | 0.32 ~ 2.5 0.16~1.25 0.16~0.63 - - - |