WIDIA™ Victory™ • High-Performance Inserts Steel • Carbon, Alloy, and Tool Steels up to 450 HB (48 HRC) Step 3 • Select the cutting speed (continued) Low-Carbon (<0.3% C) and Free-Machining Steel speed — m/min Starting Conditions material group grade 135 180 225 275 320 360 410 455 495 m/min WP15CT 395 WP25CT 275 P0/P1 WP35CT 210 WS10PT 280 WM35CT 280 Medium- and High-Carbon Steels (<0.3% C) speed — m/min Starting Conditions material group grade 135 180 225 275 320 360 410 455 495 m/min WP15CT 265 WP25CT 195 P2 WP35CT 150 WS10PT 200 WM35CT 200 Alloy Steels and Tool Steels ()330 HB) ()35 HRC) speed — m/min Starting Conditions material group grade 135 180 225 275 320 360 410 455 495 m/min WP15CT 190 WP25CT 155 P3 WP35CT 120 WS10PT 155 WM35CT 155 Alloy steels and Tool Steels (340–450 HB) (36–48 HRC) speed — m/min Starting Conditions material group grade 60 90 120 150 180 210 240 270 300 m/min WP15CT 145 WP25CT 105 P4 WP35CT 95 WS10PT 110 WM35CT 110 Ferritic, Martensitic, and PH Stainless Steels ()330 HB) ()35 HB) speed — m/min Starting Conditions material group grade 120 150 180 210 240 270 300 330 360 m/min WP15CT 215 WP25CT 195 P5 WP35CT 135 WS10PT 200 Ferritic, Martensitic, and PH Stainless Steels (340–450 HB) (36–48 HRC) speed — m/min Starting Conditions material group grade 105 135 165 195 225 255 285 315 345 m/min WP15CT 180 WP25CT 150 P6 WP35CT 105 WS10PT 150 widia.com B11