depth of cut (in) depth of cut (mm) depth of cut (in) depth of cut (mm) WIDIA™ VariTurn™ High-Temp Alloys • Iron-, Cobalt-, Nickel-Based, and Titanium Alloys „Step 1 • Select the insert geometry Negative Inserts Positive Inserts feed rate (mm/rev) feed rate (mm/rev) 2P 1P Finishing Finishing ..GP Medium feed rate (in/rev) feed rate (in/rev) „Step 2 • Select the grade Negative Insert Geometry Positive Insert Geometry cutting condition 2P ..GP 1P heavily interrupted cut TN15U – TN15U lightly interrupted cut TN10U TN10U TN15U varying depth of cut,casting, or forging skin TN10U TN10U TN10U smooth cut, pre-turned surface TN10U TN10U TN10U „Step 3 • Select the cutting speed Iron-Based, Heat-Resistant Alloys (135–320 HB) ()34 HRC) speed — m/min Starting Conditions Material Group grade 15 45 75 105 140 170 200 230 260 m/min TN10U 50 S1 TN15U 33 Cobalt-Based, Heat-Resistant Alloys (150–425 HB) ()45 HRC) speed — m/min Starting Conditions Material Group grade 15 45 75 105 140 170 200 230 260 m/min TN10U 54 S2 TN15U 36 Nickel-Based, Heat-Resistant Alloys (140–475 HB) ()48 HRC) speed — m/min Starting Conditions Material Group grade 15 45 75 105 140 170 200 230 260 m/min TN10U 63 S3 TN15U 42 Titanium and Titanium Alloys (110–450 HB) ()48 HRC) speed — m/min Starting Conditions Material Group grade 15 45 75 105 140 170 200 230 260 m/min TN10U 63 S4 TN15U 42 B116 widia.com