271 866-888-9600 gorillamill.com SPEEDS & FEEDS STANDARD PERFORMANCE 3 FLUTE (INCH) 3 FLUTE PRIMATES (INCH) COATED SPEEDS & FEEDS CHART, 1X DIAMETER DEEP, CHIMP LOAD PER TOOTH RECOMMENDED RPM AND FEED RATES FOR COATED STANDARD 3 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 21.9 4,584 15.1 3,667 21.9 3,056 22.8 2,619 21.1 2,292 20.6 1,833 19.2 1,528 18.3 1,146 15.5 Soft Steels (A36,1018,8620,1045) 225 6,876 14.4 3,438 10.3 2,750 9.9 2,292 9.6 1,964 9.3 1,719 9.2 1,375 9.1 1,146 10.3 860 9.1 Alloy Steels (4340,4140 ) 140 4,278 5.1 2,139 5.1 1,711 5.1 1,426 5.1 1,222 4.8 1,069 4.8 855 5.1 713 5.3 535 4.8 Tool Steels(A2,D2,S7) 125 3,820 4.6 1,910 4.6 1,528 4.6 1,273 4.6 1,091 4.2 955 4.2 764 4.5 637 4.7 477 4.3 Die Steels (H13,P20) 125 3,820 4.6 1,910 4.6 1,528 4.6 1,273 4.6 1,091 4.2 955 4.2 764 4.5 637 4.7 477 4.3 Stainless Steel (303, 304, 316) 175 5,348 7.9 2,674 7.2 2,139 9.6 1,782 9.6 1,528 8.7 1,337 7.9 1,070 8.1 891 8.1 668 6.9 Difficult Stainless Steel, (400 & PH Series) 100 3,056 4.6 1,528 3.6 1,222 3.6 1,018 3.9 873 3.6 764 3.3 611 3.6 509 3.8 382 3.4 High Temp. Alloys 80 2,444 2.9 1,222 2.5 977 2.6 815 2.9 698 2.7 611 2.5 489 2.6 407 2.7 305 2.7 Titanium (6AL4V) 60 1,833 3.3 916 2.4 733 2.6 611 2.5 524 2.4 458 2.4 367 2.4 305 2.7 229 2.4 Run UNCOATED endmills 25% less on SFM 3 FLUTE PRIMATE (INCH) SPEEDS & FEEDS CHART FOR FULL SLOTTING AND PROFILING, CHIMP LOAD PER TOOTH WORK PIECE MATERIAL SFM 1/8" 3/16" 1/4" 5/16" 3/8" 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 0.0014 0.0010 0.0007 0.0018 0.0012 0.0008 0.0022 0.0014 0.0010 0.0027 0.0018 0.0015 0.0031 0.0020 0.0018 Soft Aluminum (6061) 650 0.0009 0.0006 0.0005 0.0013 0.0008 0.0005 0.0018 0.0012 0.0012 0.0023 0.0016 0.0015 0.0027 0.0018 0.0014 Copper (200 Brinell <) 400 0.0007 0.0005 0.0005 0.0011 0.0007 0.0006 0.0018 0.0012 0.0010 0.0027 0.0018 0.0012 0.0032 0.0022 0.0015 Copper (200 Brinell >) 400 0.0007 0.0005 0.0004 0.0011 0.0007 0.0005 0.0014 0.0010 0.0007 0.0022 0.0014 0.0012 0.0029 0.0019 0.0013 Cast Aluminum, Silicon 6% < 500 0.0007 0.0005 0.0005 0.0011 0.0007 0.0007 0.0020 0.0013 0.0010 0.0027 0.0018 0.0015 0.0036 0.0024 0.0018 Cast Aluminum, Silicon 6% > 400 0.0007 0.0005 0.0005 0.0011 0.0007 0.0007 0.0014 0.0012 0.0010 0.0022 0.0014 0.0013 0.0029 0.0019 0.0017 Brass 800 0.0007 0.0005 0.0004 0.0009 0.0006 0.0005 0.0013 0.0010 0.0008 0.0020 0.0013 0.0012 0.0027 0.0018 0.0016 Bronze 400 0.0007 0.0005 0.0004 0.0009 0.0006 0.0005 0.0013 0.0008 0.0006 0.0020 0.0013 0.0010 0.0025 0.0019 0.0014 WORK PIECE MATERIAL SFM 7/16" 1/2" 5/8" 3/4" 1" 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 0.0040 0.0026 0.0020 0.0045 0.0030 0.0023 0.0054 0.0036 0.0030 0.0063 0.0042 0.0035 0.0072 0.0048 0.0040 Soft Aluminum (6061) 650 0.0032 0.0022 0.0020 0.0038 0.0025 0.0023 0.0049 0.0032 0.0030 0.0058 0.0038 0.0035 0.0072 0.0048 0.0040 Copper (200 Brinell <) 400 0.0036 0.0024 0.0017 0.0043 0.0029 0.0020 0.0050 0.0034 0.0023 0.0061 0.0041 0.0029 0.0072 0.0048 0.0033 Copper (200 Brinell >) 400 0.0036 0.0024 0.0017 0.0040 0.0026 0.0020 0.0047 0.0031 0.0023 0.0054 0.0036 0.0029 0.0065 0.0043 0.0033 Cast Aluminum, Silicon 6% < 500 0.0041 0.0028 0.0020 0.0045 0.0030 0.0023 0.0050 0.0034 0.0030 0.0061 0.0041 0.0035 0.0072 0.0048 0.0040 Cast Aluminum, Silicon 6% > 400 0.0034 0.0023 0.0020 0.0040 0.0026 0.0023 0.0047 0.0032 0.0030 0.0058 0.0038 0.0033 0.0068 0.0046 0.0040 Brass 800 0.0031 0.0020 0.0019 0.0036 0.0024 0.0021 0.0045 0.0030 0.0027 0.0054 0.0036 0.0033 0.0063 0.0042 0.0040 Bronze 400 0.0029 0.0020 0.0017 0.0034 0.0023 0.0020 0.0040 0.0030 0.0027 0.0050 0.0038 0.0031 0.0059 0.0045 0.0040 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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