Single End Cobalt High Speed Steel List 595: 5˚ Taper on Side - 3 Flute List 596: 7˚ 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 Steels Med. Strength Titanium Alloys Med. Strength Stainless Steels High Carbon Steel Titanium Alloys High Strength Stainless SteelsHeat ResistantHigh AlloysAustenitic AlloysNickel Base AlloysHeat ResistantHigh AlloysAustenitic AlloysNickel Base AlloysAluminumAluminum Alloys Cutting Speed 80-120 SFM 60-80 SFM 45-60 SFM 8 - 15 SFM 5 - 10 SFM 150-350 SFM Mill Dia. Speed Feed Speed Feed Speed Feed Speed Feed Speed Feed Speed FeedRPMin/minRPMin/minRPMin/minRPMin/minRPMin/minRPMin/min 5/64 3,592 2.4 2,760 1.9 1,760 1.1 540 0.4 378 0.2 12,400 7.5 3/32 2,920 2.3 2,240 1.8 1,400 1.0 456 0.3 319 0.2 10,000 7.5 1/8 2,040 2.1 1,600 1.9 880 1.1 340 0.4 238 0.2 7,200 7.7 3/16 1,160 2.2 880 2.0 540 1.2 224 0.4 157 0.2 4,000 7.8 1/4 720 2.4 512 2.2 320 1.2 168 0.3 118 0.1 3,120 8.2 3/8 565 2.6 400 2.0 280 1.3 84 0.4 59 0.2 1,980 8.3 1/2 452 2.4 360 1.9 200 1.2 68 0.4 48 0.2 1,584 7.9 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 AlloysAustenitic AlloysNickel Base AlloysHeat ResistantHigh AlloysAustenitic AlloysNickel Base AlloysAluminumAluminum Alloys Cutting Speed 130-165 SFM 105-125 SFM 65-80 SFM 20-50 SFM 15-20 SFM 400-590 SFM Mill Dia. Speed Feed Speed Feed Speed Feed Speed Feed Speed Feed Speed FeedRPMin/minRPMin/minRPMin/minRPMin/minRPMin/minRPMin/min 5/64 4,515 6.8 3,450 4.9 2,200 3.1 1,130 1.6 791 1.0 15,500 23.3 3/32 3,650 5.1 2,800 3.9 1,750 2.5 900 1.3 630 0.8 12,500 17.6 1/8 2,550 6.0 2,000 4.7 1,200 2.8 600 1.4 420 0.9 9,000 21.1 3/16 1,450 4.8 1,100 3.5 675 2.2 400 1.3 280 0.9 5,000 16.4 1/4 900 3.4 640 2.1 400 1.4 300 1.1 210 0.7 3,900 14.7 3/8 800 7.5 500 4.6 375 3.5 265 2.4 186 1.6 3,300 31.1 1/2 750 8.8 450 4.8 250 2.8 200 2.2 140 1.4 2,400 28.1 Aa = 1.5D Aa Ar = 0.1D Ar WWW.OSGTOOL.COM End Mill Technical 1137