Yg-1 Tool Company 4G MILL, 4 Flute 30° Helix Rib Square End mill, SEME7304045, D=4 L=90

YG-1 4G MILL, 4 Flute 30° Helix Rib Square End mill, SEME7304045, D=4  L=90   EDP No. R D1 D2 L1 L3 L2 Mill Dia. Tolerance Shank Dia.Tolerance No. of Flute SEME7304045 　 4 6 6 45 90 0~-0.030 h5 4  (Unit : mm) Feature ▶Due to new coating and new tool geometry, outstanding cutting ability and wear resistance. ▶Excellent for cutting prehardened steels, carbon steels, alloy steels of molds and dies, up to HRc55 and machine parts. ▶Available various length of cut and overall length products.     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 ◎ : Excellent ○ : Good P 1 Non-alloy steel About 0.15% C            Annealed 125 ○ 2 About 0.4