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Speed & Feed Recommendations
55CR, 55 HARDNESS CUT SPEED 1/8 1/4 FEED (inch/flute) 3/4 1
Fractional BRINELL
Type sfm 0.00030 0.0008 3/8 1/2 0.0024 0.0028
CARBON STEEL 175 0.00030 0.0008 0.0024 0.0028
1018, 1040, 1080, 1090, Slot 350 0.00069 0.0018 0.0015 0.0020 0.0055 0.0064
10L50, 1140, 1212, 12L15, > 175 Profile 435 0.00030 0.0008 0.0015 0.0020 0.0024 0.0028
1525, 1536 275 Light 720 0.00030 0.0008 0.0034 0.0046 0.0024 0.0028
Slot 305 0.00069 0.0018 0.0015 0.0020 0.0055 0.0064
ALLOY STEEL 275 Profile 380 0.00023 0.0006 0.0015 0.0020 0.0018 0.0021
4140, 4150, 4320, 5120, Light 630 0.00023 0.0006 0.0034 0.0046 0.0018 0.0021
5150, 8630, 86L20, 50100 > 275 Slot 255 0.00052 0.0014 0.0011 0.0015 0.0041 0.0048
375 Profile 320 0.00023 0.0006 0.0011 0.0015 0.0018 0.0021
Light 530 0.00023 0.0006 0.0026 0.0034 0.0018 0.0021
TOOL STEEL 250 Slot 175 0.00052 0.0014 0.0011 0.0015 0.0041 0.0048
A2, D2, H13, L2, M2, Profile 220 0.00021 0.0006 0.0011 0.0015 0.0017 0.0020
P20, S7, T15, W2 > 250 Light 360 0.00021 0.0006 0.0026 0.0034 0.0017 0.0020
375 Slot 230 0.00048 0.0013 0.0011 0.0014 0.0039 0.0045
Profile 285 0.00017 0.0004 0.0011 0.0014 0.0013 0.0015
CAST IRON 220 Light 470 0.00017 0.0004 0.0024 0.0032 0.0013 0.0015
Gray, Malleable, Ductile > 220 Slot 140 0.00038 0.0010 0.0008 0.0011 0.0030 0.0035
260 Profile 175 0.00030 0.0008 0.0008 0.0011 0.0024 0.0028
STAINLESS (free machining) 275 Light 290 0.00030 0.0008 0.0019 0.0025 0.0024 0.0028
303, 416, 420F, 430F, 440F Slot 340 0.00069 0.0018 0.0015 0.0020 0.0055 0.0064
275 Profile 430 0.00030 0.0008 0.0015 0.0020 0.0024 0.0028
STAINLESS (difficult) Light 705 0.00030 0.0008 0.0034 0.0046 0.0024 0.0028
304, 304L, 316, 316L 325 Slot 255 0.00069 0.0018 0.0015 0.0020 0.0055 0.0064
Profile 320 0.00023 0.0006 0.0015 0.0020 0.0018 0.0021
STAINLESS (PH) 350 Light 525 0.00023 0.0006 0.0034 0.0046 0.0018 0.0021
17-4PH, 15-5PH, Custom Slot 270 0.00052 0.0014 0.0011 0.0015 0.0041 0.0048
450, 16-6PH, PH13-8Mo 300 Profile 340 0.00018 0.0005 0.0011 0.0015 0.0014 0.0017
Light 560 0.00018 0.0005 0.0026 0.0034 0.0014 0.0017
TITANIUM Slot 185 0.00041 0.0001 0.0009 0.0012 0.0033 0.0039
Ti5Al-5V-5Mo, Profile 235 0.00018 0.0005 0.0009 0.0012 0.0014 0.0017
Ti6Al4V, Ti-7Al4Mo Light 385 0.00018 0.0005 0.0021 0.0028 0.0014 0.0017
Slot 170 0.00041 0.0001 0.0009 0.0012 0.0033 0.0039
HIGH TEMPERATURE ALLOY Profile 215 0.00021 0.0006 0.0009 0.0012 0.0017 0.0020
A-286, Hastelloy, Incoloy, Light 355 0.00021 0.0006 0.0021 0.0028 0.0017 0.0020
Inconel, Rene, Waspalloy Slot 190 0.00048 0.0013 0.0011 0.0014 0.0039 0.0045
Profile 235 0.00018 0.0005 0.0011 0.0014 0.0014 0.0017
Light 390 0.00018 0.0005 0.0024 0.0032 0.0014 0.0017
Slot 52 0.00041 0.0001 0.0009 0.0012 0.0033 0.0039
Profile 64 0.0009 0.0012
Light 107 0.0021 0.0028
SLOT CUT TYPE LIGHT* rpm = sfm x 3.82 / D1
PROFILE ipm = (inch/flute) x 5 x rpm
Short Regular Short Regular Short, Regular Long • maximum recommended depths shown
• reduce speed and feed for materials harder than listed
Rw = D1 Rw = D1 Rw = .5 x D1 Rw = .3 x D1 Rw = .05 x D1 Rw = .02 x D1 • long flute tools not recommended for Slot or Profile
Ad = .6 x D1 Ad = .5 x D1 Ad = L2 Ad = 1.5 x D1 Ad = L2 Ad = 3 x D1 * finish cuts typically require reduced feed and cutting
depths of .02 x D1 maximum
•refer to the SGS Tool Wizard for more complete
technical information
(available at )
END MILLS END MILLS 65
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