Recommended Cutting Conditions Cutting Dia. under φ16mm ¢ Recommended Cutting Conditions - External Turning (Positive Insert) [ap indicates radius] ISO Workpiece Hardness Cutting Applications Recommended Recommended Corner-R Lower Limit - Recommendation - Upper Limit Classification Material Range Chipbreaker Insert Grade (rε) Vc (m/min) ap (mm) f (mm/rev) Precision Finishing Continuous F PR1425 0.05 100 - 150 - 200 0.05 - 0.07 - 0.15 0.03 - 0.05 - 0.1 Interruption PR1425 0.2 80 - 120 - 160 0.05 - 0.1 - 0.2 0.03 - 0.1 - 0.15 Precision Finishing Continuous CF PR1425 0.2 100 - 150 - 200 0.02 - 0.05 - 0.1 0.02 - 0.05 - 0.12 Low Carbon (Molded Chipbreaker) Steel HB Continuous PR1425 0.2 100 - 140 - 180 0.2 - 0.5 - 1.0 0.05 - 0.1 - 0.2 ≤ Low Carbon Finishing Interruption GF PR1425 0.4 80 - 120 - 160 0.2 - 0.5 - 1.0 0.05 - 0.1 - 0.2 300 Alloy Finishing-Medium Continuous GQ PR1425 0.2 80 - 120 - 160 0.8 - 3.0 - 5.0 0.03 - 0.05 - 0.1 Interruption PR1425 0.4 60 - 100 - 140 0.8 - 2.0 - 3.0 0.03 - 0.05 - 0.1 E Low Feed & Large ap Continuous J, U PR1425 0.2 80 - 100 - 140 0.5 - 2.0 - 3.5 0.02 - 0.05 - 0.1 Precision Finishing Continuous F PR1425 0.05 100 - 150 - 200 0.05 - 0.07 - 0.15 0.03 - 0.05 - 0.1 Interruption PR1425 0.2 80 - 120 - 160 0.05 - 0.1 - 0.2 0.03 - 0.1 - 0.15 Precision Finishing Continuous CF PR1425 0.2 100 - 150 - 200 0.02 - 0.05 - 0.1 0.02 - 0.05 - 0.12 Medium (Molded Chipbreaker) *P Carbon Steel HB Continuous PR1425 0.2 100 - 140 - 180 0.2 - 0.5 - 1.0 0.05 - 0.1 - 0.2 Medium ≤ Finishing Interruption GF PR1425 0.4 80 - 120 - 160 0.2 - 0.5 - 1.0 0.05 - 0.1 - 0.2 Small Tools Carbon Alloy 330 0.2 80 - 120 - 160 0.8 - 3.0 - 5.0 0.03 - 0.05 - 0.1 Finishing-Medium Continuous GQ PR1425 Interruption PR1425 0.4 60 - 100 - 140 0.8 - 2.0 - 3.0 0.03 - 0.05 - 0.1 Low Feed & Large ap Continuous J, U PR1425 0.2 80 - 100 - 140 0.5 - 2.0 - 3.5 0.02 - 0.05 - 0.1 Precision Finishing Continuous F PR1425 0.05 100 - 150 - 200 0.05 - 0.07 - 0.15 0.03 - 0.05 - 0.1 Interruption PR1425 0.2 80 - 120 - 160 0.05 - 0.1 - 0.2 0.03 - 0.1 - 0.15 Precision Finishing Continuous CF PR1425 0.2 100 - 150 - 200 0.02 - 0.05 - 0.1 0.02 - 0.05 - 0.12 (Molded Chipbreaker) High Carbon HB Continuous PR1425 0.2 100 - 140 - 180 0.2 - 0.5 - 1.0 0.05 - 0.1 - 0.2 Alloy ≤ Finishing Interruption GF PR1425 0.4 80 - 120 - 160 0.2 - 0.5 - 1.0 0.05 - 0.1 - 0.2 280 0.2 80 - 120 - 160 0.3 - 1.5 - 3.0 0.03 - 0.05 - 0.1 Finishing-Medium Continuous GQ PR1425 Interruption PR1425 0.4 60 - 100 - 140 0.3 - 1.0 - 2.0 0.03 - 0.05 - 0.1 Low Feed & Large ap Continuous J, U PR1425 0.2 80 - 100 - 140 0.5 - 2.0 - 3.5 0.02 - 0.05 - 0.1 Finishing Continuous GF PR1225 0.2 80 - 100 - 120 0.1 - 0.3 - 0.5 0.03 - 0.05 - 0.1 HB Interruption PR1535 0.4 60 - 80 - 100 0.3 - 0.5 - 1.0 0.05 - 0.1 - 0.15 Stainless Steel ≤ Continuous PR1225 0.2 80 - 100 - 120 0.5 - 1.5 - 3.0 0.03 - 0.08 - 0.12 220 Medium GQ 0.4 60 - 80 - 100 0.5 - 1.0 - 2.0 0.05 - 0.1 - 0.15 M Interruption PR1535 Finishing Continuous GF PR1225 0.2 40 - 60 - 80 0.1 - 0.3 - 0.5 0.03 - 0.05 - 0.1 HB Interruption PR1535 0.4 30 - 50 - 70 0.3 - 0.5 - 1.0 0.05 - 0.1 - 0.15 Stainless Steel ≤ Continuous PR1225 0.2 40 - 60 - 80 0.5 - 1.0 - 2.0 0.03 - 0.08 - 0.12 300 Medium GQ 0.4 30 - 50 - 70 0.5 - 1.0 - 1.5 0.05 - 0.1 - 0.15 Interruption PR1535 Finishing Continuous Standard CA4505 0.4 100 - 120 - 150 0.2 - 0.5 - 1.0 0.1 - 0.15 - 0.2 HB Interruption CA4505 0.4 80 - 100 - 120 0.2 - 0.5 - 1.0 0.05 - 0.1 - 0.15 Gray Cast Iron ≤ Continuous CA4505 0.4 100 - 120 - 150 0.5 - 1.0 - 2.0 0.1 - 0.15 - 0.2 250 Medium Standard 0.8 80 - 100 - 120 0.5 - 1.0 - 2.0 0.05 - 0.1 - 0.15 K Interruption CA4505 Finishing Continuous Standard CA4515 0.4 80 - 100 - 120 0.2 - 0.5 - 1.0 0.1 - 0.15 - 0.2 Nodular Cast HB Interruption CA4515 0.4 60 - 80 - 100 0.2 - 0.5 - 1.0 0.05 - 0.1 - 0.15 Iron ≤ Continuous CA4515 0.4 80 - 100 - 120 0.5 - 1.0 - 2.0 0.1 - 0.15 - 0.2 270 Medium Standard 0.8 60 - 80 - 100 0.5 - 1.0 - 2.0 0.05 - 0.1 - 0.15 Interruption CA4515 Non-ferrous High Speed Machining Continuous Without Chipbreaker KPD001 0.2 150 - 250 - 350 0.05 - 0.1 - 0.3 0.05 - 0.1 - 0.15 Metals (Rainbow Surface Gloss) Copper Alloy Finishing Continuous F, FSF PDL025 0.2 100 - 150 - 200 0.05 - 0.3 - 0.5 0.02 - 0.07 - 0.1 N Aluminum HB (Long Tool Life) Interruption PDL025 0.4 100 - 150 - 200 0.05 - 0.3 - 0.5 0.02 - 0.07 - 0.1 Aluminum ≤ Continuous KW10 0.2 100 - 150 - 200 0.05 - 0.3 - 0.5 0.02 - 0.07 - 0.1 Alloys 100 Finishing F, FSF 0.4 100 - 150 - 200 0.05 - 0.3 - 0.5 0.02 - 0.07 - 0.1 Interruption KW10 (Si10% or less) Medium Continuous U, USF KW10 0.2 100 - 150 - 200 0.2 - 0.5 - 1.5 0.03 - 0.1 - 0.2 etc. Interruption KW10 0.4 100 - 150 - 200 0.2 - 0.5 - 1.5 0.03 - 0.1 - 0.2 Precision Finishing Continuous Without Chipbreaker KPD001 0.2 100 - 120 - 150 0.05 - 0.1 - 0.3 0.03 - 0.07 - 0.1 Titanium HB (Rainbow Surface Gloss) Interruption KPD001 0.4 70 - 100 - 120 0.05 - 0.1 - 0.3 0.03 - 0.07 - 0.1 Alloys ≤ Continuous KW10 0.4 30 - 50 - 70 0.1 - 0.5 - 1.0 0.03 - 0.1 - 0.2 400 Medium FSF, USF 0.4 30 - 50 - 70 0.1 - 0.5 - 1.0 0.03 - 0.1 - 0.2 S Interruption KW10 Finishing Continuous F, U KW10 0.4 10 - 30 - 50 0.1 - 0.3 - 0.5 0.03 - 0.05 - 0.1 Heat-resistant HB Interruption Without Chipbreaker KW10 0.8 10 - 30 - 50 0.2 - 0.5 - 0.7 0.03 - 0.05 - 0.1 Alloys ≤ Continuous PR1310 0.4 40 - 60 - 80 0.1 - 0.3 - 0.5 0.03 - 0.05 - 0.1 350 Finishing MQ 0.8 40 - 60 - 80 0.1 - 0.3 - 0.5 0.03 - 0.05 - 0.1 Interruption PR1310 Hardened 40 ~ 50 Finishing Continuous GK PR1425 0.2 40 - 60 - 80 0.1 - 0.3 - 0.5 0.02 - 0.07 - 0.1 H Steel HRC Interruption PR1425 0.4 40 - 60 - 80 0.1 - 0.3 - 0.5 0.02 - 0.07 - 0.1 Hard Materials 50 ~ 68 Finishing Continuous ME KBN05M 0.2 80 - 120 - 150 0.1 - 0.3 - 0.5 0.02 - 0.07 - 0.1 HRC Interruption MET KBN05M 0.4 60 - 100 - 120 0.1 - 0.3 - 0.5 0.02 - 0.07 - 0.1 * For machining free-cutting steels, such as SUM, etc., use PR1005 at Vc=200m/min or less. For ap and f, refer to specs for low carbon steels. E44