Positive Insert Geometry Cutting Condition -LF -HP ..MT -FST -ST KCU10B/ KC5410/KCU10B/ KCU10B/ KD1400/ KD1400/ heavily interrupted cut K313 K313 K313 KD1425 KD1425 KC5410/KCU10B/ KC5410/KCU10B/ KC5410/KCU10B/ KD1400/ KD1400/ lightly interrupted cut K313 K313 K313 KD1425 KD1425 varying depth of cut, KC5410/KCU10B/ KC5410/KCU10B/ KC5410/KCU10B/ KD1425/ KD1425/ casting, or forging skin K313 K313 K313 KD1400 KD1400 smooth cut, KC5410/KCU10B/ KC5410/KCU10B/ KC5410/KCU10B/ KD1425/ KD1425/ pre-turned surface K313 K313 K313 KD1400 KD1400 NOTE: Bold is first choice when showing multiple grades. Step 3 - Select the cutting speed Wrought Aluminum Alloys m/min SFM material group grade MIN START MAX MIN START MAX KC5410 200 700 1200 660 2300 3940 N1 K313 198 488 617 650 1600 2020 KCU10B 200 600 900 660 1970 2950 Low-Silicon Aluminum Alloys and Magnesium Alloys; Si12.2% m/min SFM material group grade MIN START MAX MIN START MAX KC5410 125 550 1000 410 1800 3280 K313 100 450 600 330 1480 1970 N2 KCU10B 125 500 900 410 1640 2950 KD1400 250 765 2625 820 2510 8610 High-Silicone Aluminum and Magnesium Alloys; Si>12.2% m/min SFM material group grade MIN START MAX MIN START MAX KD1405 250 580 1125 820 1900 3690 N3 KD1425 250 520 1000 820 1710 3280 Copper, Brass, Zinc-Based on a Machinability Index Range of 70-100 m/min SFM material group grade MIN START MAX MIN START MAX KC5410 125 275 750 410 900 2460 K68 125 260 360 410 850 1180 K313 107 260 366 350 850 1200 N4 KCU10B 125 270 700 410 890 2300 KD1400/KD1405 250 520 1000 820 1710 3280 KD1425 125 500 750 410 1640 2460 Nylon, Plastics, Rubbers, Phenolics, Resins, Fiberglass m/min SFM material group grade MIN START MAX MIN START MAX KC5410 125 170 400 410 560 1310 KCU10B 100 150 350 330 490 1150 N5 KD1400/KD1405 125 400 750 410 1310 2460 KD1425 125 365 500 410 1200 1640 76