
Chipbreaker and Grade Selection Guide for Turning Material Steel Work Steel Grades ● Fine Cutting to Finishing (Cermet) ● Finishing to Roughing (Coated Carbide) Insert Grades 400 400 High-speed Cutting Cutting Speed Vc (m/min) Cutting Speed Vc (m/min) High-speed Cutting T1000A High-speed to General-purpose Cutting AC8015P 300 T1500Z 300 General-purpose Cutting General-purpose Cutting AC8025P A T1500A 200 200 Continuous/Light Cutting 100 General-purpose and 100 AC6030M Interrupted to Heavy Interrupted Cutting Interrupted Cutting AC8035P T3000Z For Small Lathes AC1030U 0 0 Steel Fine Cutting Finishing Finishing Roughing Continuous Partially Interrupted Interrupted Continuous Partially Interrupted Interrupted Stainless Steel Main Chipbreakers Cast Iron Negative Type Positive Type Exotic Alloy MU Type MU Type 6 ME Type 3 ME Type MU Type SU Type Depth of Cut a p (mm) GE Type SU Type Depth of Cut ap (mm) Hardened (Emphasis on crater wear resistance) MU Type Steel 4 2 LB Type GU Type GE Type (Sharper Edge) LB Type SE Type GU Type SU Type LU Type 2 1 Non-Ferrous SU Type LU Type FB Type Metal FE Type FB Type SE Type 0 0.2 0.4 0.6 0 0.2 0.4 Feed Rate f (mm/rev) Feed Rate f (mm/rev) FE Type For Small Lathes Sub-Chipbreakers Negative Type Chipbreakers for High-efficiency Machining Strong Cutting Edge Chipbreakers 6 6 Depth of Cut a p (mm) ME Type MX Type Depth of Cut a p (mm) 4 4 UX Type GE Type SE Type 2 2 SX Type FE Type 0 0.2 0.4 0.6 0.8 0 0.2 0.4 0.6 Feed Rate f (mm/rev) Feed Rate f (mm/rev) Chipbreakers for Shallow Depth of Cut Wiper Insert Chipbreakers for Heavy Cutting 15 3 6 HF Type Depth of Cut a p (mm) Depth of Cut a p (mm) Depth of Cut a p (mm) 10 2 4 HW Type LU Type GUW Type FB Type 5 1 2 SEW Type HU Type FL Type/FA Type FE Type LUW Type MP Type HP Type 0 0.2 0.4 0.6 0 0.3 0.6 0.9 0 0.4 0.8 1.2 1.6 Feed Rate f (mm/rev) Feed Rate f (mm/rev) Feed Rate f (mm/rev) A10