HY-PRO® V Vanadium High Speed Steel List 574: Regular Length, Multiple Flute (Continued) Side Milling with 4FL, 6FL 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 325-590 SFM 130-165 SFM 105-125 SFM 65-80 SFM 30-50 SFM Mill Dia. Speed Feed Speed Feed Speed Feed Speed Feed Speed FeedRPMin/minRPMin/minRPMin/minRPMin/minRPMin/min 1/8 16,000 32.0 4,500 10.1 3,550 7.1 2,240 3.6 1,250 1.6 5/32 12,500 35.5 3,550 11.4 2,800 8.0 1,800 4.0 1,000 1.9 3/16 10,000 38.0 2,800 12.4 2,240 9.0 1,400 4.5 800 2.1 1/4 8,000 42.3 2,240 14.4 1,800 10.1 1,120 5.0 630 2.4 5/16 6,300 47.9 1,800 16.1 1,400 11.3 900 5.8 500 2.6 3/8 5,600 47.5 1,600 17.0 1,250 11.8 800 6.1 450 2.9 7/16 4,500 47.8 1,250 16.8 1,000 12.0 630 6.3 355 3.0 1/2 4,000 48.0 1,120 16.8 900 11.4 560 5.9 315 3.0 9/16 3,550 44.8 1,000 16.0 800 11.4 500 6.0 280 3.1 5/8 3,150 42.3 900 15.3 710 10.6 450 6.0 250 3.1 11/16 2,800 42.0 800 15.3 630 9.5 400 5.6 224 3.1 3/4 2,800 42.0 800 15.3 630 9.5 400 5.6 224 3.1 13/16 2,500 40.0 710 14.3 560 8.4 355 5.6 200 3.3 7/8 2,240 38.1 630 13.4 500 7.5 315 5.0 180 2.9 15/16 2,000 36.0 560 12.5 450 6.8 280 4.5 160 2.5 1 2,000 36.0 560 12.5 450 6.8 280 4.5 160 2.5 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. 1126 End Mill Technical WWW.OSGTOOL.COM