274 866-888-9600 gorillamill.com SPEEDS & FEEDS STANDARD PERFORMANCE 4 FLUTE (INCH) 4 FLUTE PRIMATE (INCH) COATED SPEEDS & FEEDS CHART, 1X DIAMETER DEEP, FULL SLOTTING, CHIMP LOAD PER TOOTH RECOMMENDED RPM AND FEED RATES FOR COATED STANDARD 4 FLUTE CARBIDE END MILLS WORK PIECE MATERIAL SFM 1/8" 1/4" 5/16" 3/8" 7/16" 1/2" 5/8" 3/4" 1" RPM IPM RPM IPM RPM IPM RPM IPM RPM IPM RPM IPM RPM IPM RPM IPM RPM IPM Gray Cast Iron 300 9,168 29.3 4,584 20.1 3,667 29.3 3,056 30.5 2,619 28.2 2,292 27.5 1,833 25.6 1,528 24.4 1,146 20.6 Soft Steels (A36,1018,8620,1045) 225 6,876 19.2 3,438 13.8 2,750 13.2 2,292 12.8 1,964 12.5 1,719 12.3 1,375 12.1 1,146 13.7 860 12.0 Alloy Steels (4340,4140 ) 140 4,278 6.8 2,139 6.8 1,711 6.8 1,426 6.8 1,222 6.4 1,069 6.4 855 6.8 713 7.1 535 6.4 Tool Steels (A2,D2,S7) 125 3,820 6.1 1,910 6.1 1,528 6.1 1,273 6.1 1,091 5.6 955 5.7 764 6.1 637 6.3 477 5.7 Die Steels (H13,P20) 125 3,820 6.1 1,910 6.1 1,528 6.1 1,273 6.1 1,091 5.6 955 5.7 764 6.1 637 6.3 477 5.7 Stainless Steel (303, 304, 316) 175 5,348 10.6 2,674 9.6 2,139 12.8 1,782 12.8 1,528 11.6 1,337 10.6 1,070 10.7 891 10.7 668 9.3 Difficult Stainless Steel (400 & PH Series) 100 3,056 6.1 1,528 4.9 1,222 4.9 1,018 5.3 873 4.8 764 4.5 611 4.9 509 5.1 382 4.6 High Temp. Alloys 80 2,444 3.9 1,222 3.4 977 3.5 815 3.9 698 3.6 611 3.4 489 3.5 407 3.7 305 3.6 Titanium (6AL4V) 60 1,833 4.4 916 3.3 733 3.5 611 3.4 524 3.3 458 3.3 367 3.2 305 3.6 229 3.2 Run UNCOATED endmills 25% less on SFM STANDARD PERFORMANCE 4 FLUTE (METRIC) 4 FLUTE PRIMATE (METRIC) SPEEDS & FEEDS CHART FOR FULL SLOTTING AND PROFILING, CHIMP LOAD PER TOOTH WORK PIECE MATERIAL SFM 3mm 4mm 5mm 6mm 8mm PERCENTAGE OF CUTTER DIAMETER 10% 20% Slot 10% 20% Slot 10% 20% Slot 10% 20% Slot 10% 20% Slot Aircraft Aluminum (2000,5000 & 7000 series) 800 0.0350 0.0250 0.0150 0.0400 0.0270 0.0190 0.0460 0.0290 0.0210 0.0530 0.0330 0.0220 0.0680 0.0450 0.0380 Soft Aluminum (6061) 650 0.0220 0.0150 0.0120 0.0280 0.0190 0.0180 0.0350 0.0230 0.0230 0.0430 0.0270 0.0250 0.0580 0.0400 0.0380 Copper (200 Brinell <) 400 0.0170 0.0120 0.0120 0.0250 0.0160 0.0150 0.0350 0.0220 0.0210 0.0430 0.0270 0.0250 0.0680 0.0450 0.0300 Copper (200 Brinell >) 400 0.0170 0.0120 0.0100 0.0250 0.0160 0.0140 0.0350 0.0220 0.0210 0.0330 0.0220 0.0150 0.0550 0.0350 0.0300 Cast Aluminum, Silicon 6% < 500 0.0170 0.0120 0.0120 0.0250 0.0160 0.0140 0.0350 0.0230 0.0210 0.0480 0.0300 0.0220 0.0680 0.0450 0.0380 Cast Aluminum, Silicon 6% > 400 0.0170 0.0120 0.0120 0.0250 0.0160 0.0140 0.0350 0.0230 0.0210 0.0330 0.0270 0.0220 0.0550 0.0350 0.0330 Brass 800 0.0170 0.0120 0.0100 0.0250 0.0160 0.0120 0.0350 0.0230 0.0150 0.0300 0.0220 0.0170 0.0500 0.0330 0.0300 Bronze 400 0.0170 0.0120 0.0100 0.0250 0.0160 0.0120 0.0350 0.0220 0.0140 0.0300 0.0170 0.0150 0.0500 0.0330 0.0250 WORK PIECE MATERIAL SFM 10mm 12mm 16mm 20mm 25mm PERCENTAGE OF CUTTER DIAMETER 10% 20% Slot 10% 20% Slot 10% 20% Slot 10% 20% Slot 10% 20% Slot Aircraft Aluminum (2000,5000 & 7000 series) 800 0.0830 0.0530 0.0480 0.1090 0.0730 0.0550 0.1370 0.0910 0.0760 0.1670 0.1110 0.0910 0.1820 0.1210 0.1010 Soft Aluminum (6061) 650 0.0730 0.0480 0.0500 0.0910 0.0610 0.0550 0.1240 0.0810 0.0760 0.1540 0.1010 0.0910 0.1820 0.1210 0.1010 Copper (200 Brinell <) 400 0.0860 0.0580 0.0400 0.1040 0.0710 0.0480 0.1270 0.0860 0.0580 0.1620 0.1090 0.0760 0.1820 0.1210 0.0830 Copper (200 Brinell >) 400 0.0780 0.0500 0.0350 0.0960 0.0630 0.0480 0.1190 0.0780 0.0580 0.1440 0.0960 0.0760 0.1650 0.1090 0.0830 Cast Aluminum, Silicon 6% < 500 0.0960 0.0630 0.0480 0.1090 0.0730 0.0550 0.1270 0.0860 0.0760 0.1620 0.1090 0.0910 0.1820 0.1210 0.1010 Cast Aluminum, Silicon 6% > 400 0.0780 0.0500 0.0450 0.0960 0.0630 0.0550 0.1190 0.0810 0.0760 0.1540 0.1010 0.0860 0.1720 0.1160 0.1010 Brass 800 0.0730 0.0480 0.0430 0.0860 0.0580 0.0500 0.1140 0.0760 0.0680 0.1440 0.0960 0.0860 0.1600 0.1060 0.1010 Bronze 400 0.0680 0.0500 0.0380 0.0810 0.0550 0.0480 0.1010 0.0760 0.0680 0.1340 0.1010 0.0810 0.1500 0.1140 0.1010 Run UNCOATED endmills 25% less on SFM STANDARD CARBIDE END MILLS * NOTE: Recommended Speeds & Feeds, applications may vary. These Speeds & Feeds are based on Standard & Stub LOC. * NOTE: Recommended Speeds & Feeds, applications may vary. These Speeds & Feeds are based on Standard & Stub LOC.
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