HSS and HSS/Co drills CUTTING PARAMETERS 138HB INFO Material Group N4 TTYAP-HHTOAO-4NHTA ISO 513 Hardness/Rm TPYUP-HHPOUON Vc (m/min) 40-60 D n fn Vf (mm) (rpm) (mm/rev) (mm/min) TSUYPHHOON 1.5 10620 0.065 690 2 7960 0.080 640 2.5 6370 0.090 570 3 5310 0.100 530 TAYLPHHOON 3.5 4550 0.110 500 4 3980 0.120 480 4.5 3540 0.130 460 THYRPCHOON 5 3180 0.140 450 6 2650 0.160 420 7 2270 0.180 410 TSUYPHHMOIONIN 8 1990 0.200 400 9 1770 0.220 390 10 1590 0.250 400 THYLPHOON C-SD-TA LFTA SUTA HDSRSIL-LHSSS/CO G2 MDTA HF VH/UP MEF ALU MEX UH HENSSD/CMOIL-LHSSSP CBUARRRBSIDE 257