depth of cut (in) depth of cut (mm) WIDIA™ Victory™ • High-Performance Inserts Insert Selection System Step 1 • Select the insert geometry P Steel M Stainless Steel K Cast Iron Negative Inserts N Non-Ferrous S High-Temp Alloys feed rate (mm/rev) H Hardened Materials -RH -UR Roughing -ML -MR Medium Machining feed rate (in/rev) -FF Finishing Step 2 • Select the grade Negative Insert Geometry Positive Insert Geometry cutting condition -FF -ML -MR -UR -RH -FP -MU -MP heavily interrupted cut WP15CT WP25CT WP35CT/WP25CTWP35CT WP35CT WP25CT/WS25PTWP35CT WM35CT lightly interrupted cut WP15CT WP25CT WP25CT WP35CT WP35CT WP25CT WP25CT WP25CT varying depth of cut,casting, or forging skin WP15CT WP15CT WP15CT WP25CT WP25CT WP15CT WP15CT WP15CT smooth cut, pre-turned surface WP15CT WP15CT WP15CT WP25CT WP25CT WP15CT WP15CT WP15CT Step 3 • Selecting the cutting speed 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 WIDIA Material Group Selection Guide: To optimise speed recommendations, material subgroups have been added to each of the six workpiece material groups. material group number of material material ISO code subgroups steel P 1–6 stainless steel M 1–3 cast iron K 1–3 non-ferrous materials N 1–8 high-temp alloys S 1–4 hardened materials H 1 widia.com B9