HY-PRO® V Vanadium High Speed Steel List 573: Regular Length, 2 Flute List 574: Regular Length, Multiple Flute Slotting with 2FL Hardness – Up to 145 Brinell Up to 20 HRC 20 to 30 HRC 30 to 40 HRC Aluminum AlloyedWork MaterialAluminum PlasticsWoodsMild SteelsBrass BronzeMedium Tensile SteelsMild Steel ForgingsCast IronHard Brass and BronzeCopperHigh Tensile SteelsUnalloyed TitaniumHeat ResistantFerritic Low AlloysHigh Tensile SteelsTool SteelsMedium StrengthStainlessSteels and TitaniumAlloys Cutting Speed 250-350 SFM 80-100 SFM 50-65 SFM 35-45 SFM 20-30 SFM Mill Dia. Speed Feed Speed Feed Speed Feed Speed Feed Speed FeedRPMin/minRPMin/minRPMin/minRPMin/minRPMin/min 1/8 10,000 10.0 4,000 4.5 3,000 7.1 1,800 1.5 1,250 0.9 5/32 8,000 11.4 3,150 5.0 2,360 8.0 1,400 1.6 1,000 1.0 3/16 6,300 12.0 2,500 5.5 1,900 9.0 1,120 1.8 800 1.1 1/4 5,000 13.3 2,000 6.4 1,500 10.1 900 2.0 630 1.3 5/16 4,000 15.3 1,600 7.1 1,180 11.3 710 2.3 500 1.4 3/8 3,550 15.0 1,400 7.4 1,060 11.8 630 2.4 450 1.5 7/16 2,800 14.9 1,120 7.5 850 12.0 500 2.5 355 1.5 1/2 2,500 15.0 1,000 7.5 750 11.4 450 2.4 315 1.5 9/16 2,240 14.1 900 7.3 670 11.4 400 2.4 280 1.6 5/8 2,000 13.4 800 6.8 600 10.6 355 2.4 250 1.6 11/16 1,800 13.5 710 6.8 530 9.5 315 2.3 224 1.6 3/4 1,800 13.5 710 6.8 530 9.5 315 2.3 224 1.6 13/16 1,600 12.8 630 6.3 475 8.4 280 2.3 200 1.6 7/8 1,400 11.9 560 5.9 425 7.5 250 2.0 180 1.5 15/16 1,250 11.3 500 5.6 375 6.8 224 1.8 160 1.3 1 1,250 11.3 500 5.6 375 6.8 224 1.8 160 1.3 1) Based on regular 4FL end mills cutting depth (1.5D) x cutting width (0.1D). 2) For 2FL end mill, decrease feed 50%. 3) For finish, increase RPM 1.3 to 1.5 times. WWW.OSGTOOL.COM End Mill Technical 1125