Suggested Speeds And FeedsCarbide Thread Mills SFPM & Feed Inches per Tooth Tool Shank Diameter (Number of Flutes) Material Class Typical Grades 1/8" (3) 3/16" (3) 1/4" (3) 5/16" (4) 3/8" (4) 1/2" (5) 3/4" (5) Steel Plain & Low Carbon to 22Rc 1005,1020,1108-1119, 1213-1215, 1513-1518, 4012, 5015, 9310 600 .003 600 .003 600 .004 600 .005 600 .005 600 .006 600 .006 Medium Carbon & Alloy Steels Carbon & Alloys 22 Rc to 32 RC 1025, 1130-1151, 1330-1345, 1520-1572, 4023-4063, 4120-4161, 4320-4340, 4620-4640, 8620-8660, 8720-8750, 6150, 51000, 52100 575 .001 575 .003 575 .002 575 .003 575 .003 575 .004 575 .004 Medium Carbon & Alloy Steels Carbon & Alloys 32 Rc to 42 RC 1040-1095, 1140-1151, 1330-1345, 1520-1572, 4023-4063, 4120-4161, 4330-4340, 4620-4660, 8620-8660, 8740-8750, 6150, 51000, 52100 525 .0003 525 .0003 525 .0005 525 .0006 525 .0007 525 .001 525 .0015 Stainless Steels Austenitic 301-304, 310, 316, 321, 347 525 .001 525 .001 525 .0015 525 .0015 525 .002 525 .003 525 .004 Stainless Steels Martensitic 403, 410, 416, 420, 430, 431, 440C 550 .001 550 .001 550 .0015 550 .0015 550 .002 550 .003 550 .004 Stainless Steels Precipitation Hardening 15-5PH, 17-4PH, AM350, AM355, AM363, PH13-8Mo, PH14-8Mo 300 .001 300 .001 300 .001 300 .0015 300 .0015 300 .002 300 .002 Nickel Nickel Base Alloys Inco 700, 713C, 718, Inconel X, Monel 400, 401, 404 & K401 Rene 41 Rene 95 Waspoloy, Udimet 500 & 700 120 .0005 120 .0005 120 .001 120 .001 120 .0015 120 .002 120 .001 Titanium Titanium and Titanium Alloys Pure Ti, Ti-6AL-4V, Ti-8Al-1Mo, Ti-&Al-4Mo 100 .0005 100 .0005 100 .001 100 .001 100 .0015 100 .002 100 .002 Cast Iron Gray, Malleable & Ductile A48, A220, A436, A319, A536, A602, J158, J434 600 .001 600 .0015 600 .0015 600 .002 600 .003 600 .004 600 .004 Non-Ferrous Low Si & Cast Aluminum 6061, Free Machining Brass 1700 .002 1700 .002 1700 .003 1700 .003 1700 .004 1700 .005 1700 .005
Magnified View - Please use mouse to move page for easier readability