TurningMillingDrillingTechnicalInformationIndex Machining group Solid carbide milling Recommended cutting data A End mill – GM series Starting values for cutting speed vc [m/min] 5501R302GM5601R302GM5502R302GM5602R302GM GM-2EGM-2EFPGM-2F Brinell Slot milling Shoulder milling Slot milling Shoulder milling Material group Composition / structure / heat treatment hardness Ø [mm] ap max Ø [mm] ae max Ø [mm] ap max Ø [mm] ae max HB 0 12 % Si, cannot be hardened 130 26machining steel, PB> 1%11027 Copper and copper alloys(bronze/brass)CuZn, CuSnZn 90 28 CuSn, Pb-free copper, electrolytic copper 100 29 annealed 200 30 Fe-based alloys hardened 280 31 Heat-resistant alloys annealed 250 32 S Ni or Co bass hardened 350 33 cast 320 34 pure titanium Rm 400 35 Titanium alloys α and β alloys hardened Rm 1050 36 hardened and tempered 55 HRC 37 Hardened steel E H Hard cast iron hardened and tempered 60 HRC 38cast40039 Hardened cast iron hardened and tempered 55 HRC 40 Thermoplasts 41 Thermosetting plastics 42 X Non-metallic materials Plastic, glass-fibre reinforced GFRP 43 Plastic, carbon fibre reinforced CFRP 44 Graphite 45 Wood 46 Note: The given cutting values are guide values, which were determined under ideal conditions. The values have to be adapted in individual cases. Feed rate recommendations on page B460. For examples of material for cutting tool groups view page D22. B 438