OPERATING GUIDELINES , ROUND LINE - HIGH FEED END MILL (4 AND/OR 6 FLUTE) OPERATING GUIDELINES Series 47A, 48A Workpiece Material Diameter / Programming cutting speed feed per tooth recommended radius cutting depth in Vc in/min fz (in) ap (in) Unalloyed steel .250 R.040 650 - 950 .012 .012 P .312 R.065 650 - 950 .015 .015.375 R.080650 - 950.020.020 .500 R.100 650 - 950 .020 .025 .625 R.125 650 - 950 .025 .030 .750 R.160 650 - 950 .030 .040 1.00 R.145 650 - 950 .030 .045 High Carbon steel .250 R.040 600 - 850 .012 .012 P .312 R.065 600 - 850 .015 .015.375 R.080600 - 850.020.020 .500 R.100 600 - 850 .020 .025 .625 R.125 600 - 850 .025 .030 .750 R.160 600 - 850 .030 .040 1.00 R.145 600 - 850 .030 .045 Alloyed / Tool steel .250 R.040 500 - 700 .012 .008 < 1400N/mm² .312 R.065 500 - 700 .015 .012 P .375 R.080 500 - 700 .020 .015 .500 R.100 500 - 700 .020 .020 .625 R.125 500 - 700 .025 .025 .750 R.160 500 - 700 .030 .030 1.00 R.145 500 - 700 .030 .040 Stainless steel .250 R.040 450 - 650 .012 .008 M .312 R.065 450 - 650 .015 .012 .375 R.080 450 - 650 .020 .015 .500 R.100 450 - 650 .020 .020 .625 R.125 450 - 650 .025 .025 .750 R.160 450 - 650 .030 .030 1.00 R.145 450 - 650 .030 .040 Gray cast iron .250 R.040 650 - 950 .012 .012 K .312 R.065 650 - 950 .015 .015 .375 R.080 650 - 950 .020 .020 .500 R.100 650 - 950 .020 .025 .625 R.125 650 - 950 .025 .030 .750 R.160 650 - 950 .030 .040 1.00 R.145 650 - 950 .030 .045 Cast alloys .250 R.040 500 - 700 .012 .008 K .312 R.065 500 - 700 .015 .012 .375 R.080 500 - 700 .020 .015 .500 R.100 500 - 700 .020 .020 .625 R.125 500 - 700 .025 .025 .750 R.160 500 - 700 .030 .030 1.00 R.145 500 - 700 .030 .040 466