Single End Cobalt High Speed Steel List 597: 10˚ Taper on Side - 3 Flute Slotting Hardness Up to 145 Brinell Up to 20 HRC 20 to 30 HRC 30 to 40 HRC 40 to 50 HRC – Work Material Mild SteelsHard BrassBronzeCast IronMed. Carbon SteelsMed. StrengthTitanium AlloysMed. StrengthStainless SteelsHigh Carbon SteelTitanium AlloysHigh StrengthStainless SteelsHeat ResistantHigh AlloysAustentitic AlloysNickel Base AlloysHeat ResistantHigh AlloysAustentitic AlloysNickel Base AlloysAluminumAluminum Alloys Cutting Speed 80-120 SFM 60-80 SFM 45-60 SFM 25-45 SFM 5 - 12 SFM 150-350 SFM Mill Dia. Speed Feed Speed Feed Speed Feed Speed Feed Speed Feed Speed FeedRPMin/minRPMin/minRPMin/minRPMin/minRPMin/minRPMin/min 3/32 2,800 1.7 2,240 1.6 1,400 1.0 440 0.3 286 0.2 10,000 7.1 1/8 2,000 2.1 1,600 1.9 960 1.1 328 0.4 213 0.2 7,200 7.5 1/4 720 2.2 520 2.0 320 1.2 164 0.3 107 0.2 3,120 8.2 Cutting Depth = (1/3)D 1/3D Side Milling Hardness Up to 145 Brinell Up to 20 HRC 20 to 30 HRC 30 to 40 HRC 40 to 50 HRC – Work Material Mild SteelsHard BrassBronzeCast IronMed. Carbon Steels Med. Strength Titanium Alloys Med. Strength Stainless Steels High Carbon Steel Titanium Alloys High Strength Stainless SteelsHeat ResistantHigh AlloysAustentitic AlloysNickel Base AlloysHeat ResistantHigh AlloysAustentitic AlloysNickel Base AlloysAluminumAluminum Alloys Cutting Speed 80-120 SFM 60-80 SFM 45-60 SFM 25-45 SFM 15-20 SFM 150-350 SFM Mill Dia. Speed Feed Speed Feed Speed Feed Speed Feed Speed Feed Speed FeedRPMin/minRPMin/minRPMin/minRPMin/minRPMin/minRPMin/min 3/32 3,500 4.9 2,800 3.9 1,750 2.5 900 1.3 630 0.8 12,500 17.7 1/8 2,550 6.0 2,000 4.7 1,200 2.8 600 1.4 420 0.9 9,000 21.3 1/4 900 3.4 650 2.2 400 1.4 300 1.1 210 0.7 3,900 13.8 Aa = 1.5D Aa Ar = 0.1D Ar 1138 End Mill Technical WWW.OSGTOOL.COM