Yg-1 Tool Company 4G MILL, 2 Flute 30°Helix Rib Ball End mill, SEM84600806, D=0.8

YG-1 4G MILL, 2 Flute 30°Helix Rib Ball End mill, SEM84600806, D=0.8   EDP No. R D1 D2 L1 L3 L2 Mill Dia. Tolerance Shank Dia.Tolerance No. of Flute SEM84600806 R0.40 0.8 4 0.8 6 45 0~-0.012 h5 2  (Unit : mm) Feature ▶Due to new coating and new tool geometry, outstanding cutting ability and wear resistance. ▶Due to unique ball nose geometry and cutting edges, cutting force decreased, and wear resistance increased. ▶Excellent performance when cutting prehardened steels, up to HRc55 which are used for molds & dies.   High Speed Cutting for Pre-Hardened Steels up to HRc55 -4G MILLS Suitable for a wide range of work material, specifically for increasing tool life when machining pre-hardened materials, low hardness materials, cast iron, etc. High speed cutting, dry and wet cut recommended together.    Cutting Conditions ISO VDI 3323 Material Description Composition / Structure / Heat Treatment HB HR SEM846 P 1 Non-alloy steel About 0.15% C            Annealed 125 ○