S TA N D A R D CUTTING CONDITIONS Feed: f (mm/rev) ISO Workpiece material Cutting speed DC (mm) Vc (m/min) ø4 - 4.4 ø4.5 - 4.9 ø5 - 5.9 Low carbon steels (C < 0.3) SS400, SM490, S25C, etc. 80 - 140 0.04 - 0.07 0.04 - 0.08 0.07 - 0.13 C15E4, E275A, E355D, etc. High carbon steels (C > 0.3) S45C, S55C, etc. 70 - 120 0.04 - 0.07 0.04 - 0.08 0.07 - 0.13 C45, C55, etc. Low alloy steels SCM415, etc. 70 - 120 0.04 - 0.06 0.05 - 0.08 0.07 - 0.13 18CrMo4, etc. Alloy steels SCM440, SCr420, etc. 40 - 90 0.04 -0.07 0.05 - 0.08 0.07 - 0.13 42CrMo4, 20Cr4, etc. Stainless steels SUS304, SUS316, etc.X5CrNi18-9, 30 - 70 - - 0.04 - 0.08 X5CrNiMo17-12-2, etc. Grey cast irons FC250, etc. 80 - 180 0.04 - 0.08 0.04 - 0.08 0.1 - 0.15 GG25, etc. Ductile cast irons FCD700, etc. 80 - 140 0.04 - 0.08 0.04 - 0.08 0.1 - 0.15 GGG70, etc. Aluminium alloys ADC12, etc. 80 - 220 - - - AlSi11Cu3, etc. Titanium alloysTi-6Al-4V, etc. 20 - 50 - - - Nickel-based alloys 20 - 50 - - - Hardened steel 20 - 50 - - - - Cutting conditions in the above table show standard cutting conditions - Machined hole diameter may change depending upon the rigidity of the machine - Cutting conditions may change due to the rigidity and power of the machine and tool or cutting conditions the workpiece material 144 NEW PRODUCTS