Insert Selection (vc)Cutting Speed Depth of Cut (mm) Exotic Metal Turning Insert Selection Guide Chipbreakers Negative Type NMU 6,0 – NEG 4,0 – NEG NMU NUP NEX (NUP) NEX 2,0 – NEF (NSU) NSU 0 l l l l 0 0,1 0,3 0,3 0,4 Feed Rate (mm/rev) NEF Grades (m/min) CBN Grades for 400 High Speed Finishing 200 Coated Grade for 100 BN7000 Finishing to Rough Cutting Coated Grade for Mediumto Rough Cutting 50 AC510U / EH510 AC520U / EH520 10 Carbide Grade Carbide Grade 0 Finishing Roughing Continuous Cutting General Cutting Interrupted Cutting Recommended Cutting Conditions (Min. - Optimum - Max.) Work Material CuttingProcessChipbreakers Grades Depth of Cut(mm) Feed Rate Cutting Speed(mm/rev)(m/min) Finishing NEF(NSU) AC510U 0,2-0,5-1,5 0,1-0,12-0,2 50-60-90 Light NEX AC510U 0,5-1,0-3,0 0,1-0,20-0,3 40-50-80 Heat-Resistant Alloy Medium NEG AC510U 0,5-2,0-4,0 0,15-0,25-0,3 40-50-80 Rough NMU AC520U 1,0-2,0-4,0 0,2-0,25-0,35 30-45-60 Finishing NEF(NSU) EH510(AC510U) 0,2-0,5-1,5 0,1-0,15-0,2 50-65-80 Light NEX AC510U 0,5-1,0-2,5 0,1-0,20-0,25 40-55-70 Titanium Alloy Medium NEG EH510(AC510U) 0,5-2,0-3,5 0,15-0,25-0,3 40-55-70 Rough NMU AC520U 1,0-2,0-3,5 0,2-0,25-0,3 30-40-50 A12