Work Material Speed (M/Min) Feed Per Evolution (MM/Rev) 1,0 - 1,5 1,5 - 3,0 3,0 - 6,0 6,0 - 9,0 9,0 - 12,0 Alluminium Alloys 61-122 .051 - .101 .101 - .152 .152 - .203 .203 - .254 .254 - .305 Copper 30-53 .025 - .051 .051 - .076 .076 - .127 .127 - .203 .203 - .254 Brass Bronze 38-76 .025 - 051 .051 - .076 .076 - .127 .127 - .203 .203 - .254 Composites, Plastics 61-122 .051 - .101 .101 - .152 .152 - .203 .203 - .254 .254 - .305 Magnesium Alloys 61-122 .051 - .101 .101 - .152 .152 - .203 .203 - .254 .254 - .305 Cast Iron - Grav 38-61 .025 - .051 .051 - .101 .101 - .152 .152 - .229 .229 - .305 Cast Iron - Ductile 24-53 .025 - .051 .051 - .101 .101 - .152 .152 - .229 .229 - .305 Cast Iron - Malleable 23-46 .025 - 051 .051 - .076 .076 - .127 .127 - .178 .178 - .254 Low Carbon Steel 38Rc 1018,12L14, 8620 38-61 .025 - .051 .051 - .076 .076 - .127 .127 - .203 .203 - .254 Medium Carbon Steel 38Rc 4140, 4340 30-53 .025 - .051 .051 - .076 .076 - .127 .127 - .203 .203 - .203 Tool Die Steels 38 Rc A2, D2, H13, P20 18-30 .025 - .051 .051 - .076 .076 - .127 .127 - .203 .127 - .254 Tool Steels 39 - 48 Rc A2, D2, H13, P20 12-23 .025 - .051 .051 - .076 .076 - .127 .101 - .152 .152 - .203 Tool Steels 49 - 52 Rc A2, D2 9-20 .013 - .025 .025 - .051 .051 - .076 .076 - .101 .101 - .152 Easy to Machine Stainless Steel 416, 410, 302, 303 21-46 .025 - .051 .051 - .076 .076 - .127 .127 - .203 .203 - .254 Moderate Machining Stainless Steels 304, 316, Invar, Kovar 20-33 .025 - .051 .051 - .076 .076 - .127 .127 - .203 .203 - .254 Difficult to Mchine Stainless Steels 316L, 17-4Ph, 15-5Ph, 13-8 PH 15-30 .013 - .025 .025 - .051 .051 - .076 .076 - .101 .101 - .152 Titanium 9-20 .025 - .051 .051 - .076 .076 - .127 .127 - .203 .203 - .254 High Temp Alloys, Inconel, Haynes, Stellite, Hastaloy, Waspalloy 6-15 .013 - .025 .025 - .051 .051 - .101 .101 - .152 .152 - .203