Single End Cobalt High Speed Steel List 593: 2˚ Taper on Side - 3 Flute List 594: 3˚ 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 SteelsHigh Carbon SteelTitanium AlloysHigh StrengthStainless SteelsHigh Carbon SteelTitanium AlloysHigh StrengthStainless SteelsAluminumAluminum Alloys Cutting Speed 80-120 SFM 60-80 SFM 45-60 SFM 25-45 SFM 8-20 SFM 150-350 SFM Mill Dia. Speed Feed Speed Feed Speed Feed Speed Feed Speed Feed Speed FeedRPMin/minRPMin/minRPMin/minRPMin/minRPMin/minRPMin/min 5/64 3,774 2.5 3,020 2.1 1,887 1.1 566 0.4 396 0.2 13,211 7.6 3/32 3,152 2.4 2,522 2.1 1,576 1.1 473 0.3 330 0.2 11,032 7.8 1/8 2,370 2.5 1,896 2.2 1,185 1.4 356 0.4 248 0.2 8,295 7.9 3/16 1,576 2.4 1,261 2.4 788 1.3 236 0.4 165 0.2 5,516 8.1 1/4 1,180 2.8 944 2.8 590 1.6 177 0.3 123 0.2 4,132 8.5 3/8 788 3.4 630 2.9 394 1.9 118 0.5 82 0.3 2,758 10.5 1/2 591 3.2 473 2.5 296 1.6 89 0.5 62 0.3 2,070 9.4 5/8 473 2.6 378 2.3 236 1.5 71 0.4 49 0.2 1,654 8.5 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 SteelsHigh Carbon SteelTitanium AlloysHigh StrengthStainless SteelsHigh Carbon SteelTitanium AlloysHigh StrengthStainless SteelsAluminumAluminum Alloys Cutting Speed 130-150 SFM 105-120 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 5,000 7.1 3,800 5.4 2,400 3.4 1,300 1.8 910 1.2 17,500 24.1 3/32 4,100 5.8 3,200 4.5 2,000 2.8 1,100 1.6 770 1.0 14,500 20.5 1/8 3,100 7.3 2,400 5.6 1,500 3.5 800 1.8 560 1.2 11,000 25.9 3/16 2,500 8.2 1,900 6.2 1,200 3.9 650 2.1 455 1.4 8,800 29.1 1/4 2,050 7.2 1,600 5.6 1,000 3.5 550 1.9 385 1.2 7,300 25.8 3/8 1,250 11.8 950 8.9 600 5.6 330 3.1 231 2.0 4,400 41.5 1/2 1,000 11.2 800 8.9 500 5.6 275 3.1 193 2.0 3,600 40.3 5/8 750 9.3 600 7.4 380 4.7 200 2.4 140 1.6 2,700 33.5 Aa Aa = 1.5D Ar = 0.1D Ar 1136 End Mill Technical WWW.OSGTOOL.COM