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SFM & CPT
RECOMMENDATIONS *
OVER 32 HRc HARD GRADE MATERIALS
|
MATERIAL |
SFM |
1/8" |
3/16" |
1/4" |
3/8" |
1/2" |
5/8" |
3/4" |
1" |
|
NON-FERROUS
MATERIALS |
Aluminum Alloys
440, 356, 380, C61300 |
500-1000 |
0.001 |
0.0015 |
0.002 |
0.003 |
0.004 |
0.005 |
0.006 |
0.008 |
Copper
Navel Brass, High Silicon Bronze, A17, C-17200 |
800-1000 |
0.001 |
0.0015 |
0.002 |
0.0025 |
0.003 |
0.004 |
0.0045 |
0.005 |
Copper Alloys
Nickel Silver, Beryllium Copper, Oxygen-Free Copper |
800-1000 |
0.001 |
0.0015 |
0.002 |
0.0025 |
0.003 |
0.0047 |
0.004 |
0.005 |
Plastics
Polycarbonate |
200-500 |
0.001 |
0.002 |
0.003 |
0.004 |
0.006 |
0.008 |
0.01 |
0.012 |
|
STAINLESS STEELS |
Precipitation
17/4, 17/7, AF-71, Custom 450/635, 15/7MO |
90-125 |
0.0003 |
0.0005 |
0.001 |
0.001 |
0.002 |
0.003 |
0.004 |
0.005 |
Austenitic
304, 310, 314, 316, 321, 330, 347, 348 |
90-150 |
0.0002 |
0.0003 |
0.0005 |
0.001 |
0.002 |
0.0025 |
0.0035 |
0.004 |
Martensitic
420, 430F, 440C, 446 |
90-170 |
0.0002 |
0.0003 |
0.0005 |
0.001 |
0.0015 |
0.0025 |
0.0025 |
0.004 |
|
HIGH TEMP ALLOYS |
Cobalt Base
Air-Resist 13/213/215, Haynes 21/36, Howmet 3, Hs 6/51, Nasa Co-W-Re,
Mar-M-302, MP-159 |
50-80 |
0.0003 |
0.0004 |
0.0006 |
0.0008 |
0.0012 |
0.0015 |
0.002 |
0.0025 |
Nickel Base
Hastelloy-C/B/G/X, Inconel 718, Waspaloy, M252, Rene 41-95, Nimonic
75-80, Astroloy, Udimet 500-700 |
50-80 |
0.0004 |
0.0005 |
0.0008 |
0.001 |
0.002 |
0.0025 |
0.003 |
0.004 |
Iron Base
A286, Haynes 556, Discoloy, V-57 |
70-110 |
0.0004 |
0.0005 |
0.001 |
0.0015 |
0.002 |
0.0025 |
0.003 |
0.004 |
|
STEELS |
High Strength
Steels
4140, 4340M, EDT-150, HP9-430, 11-10, 300M, D6Ac, H11, H13, Armor Plate |
80-140 |
0.0004 |
0.0006 |
0.001 |
0.0015 |
0.0015 |
0.0025 |
0.003 |
0.004 |
High Alloy
Steels-Mold & Die
Hy-Tugg, Stressproof, Armor Plate |
80-140 |
0.0004 |
0.0006 |
0.001 |
0.0015 |
0.0015 |
0.0025 |
0.003 |
0.004 |
Medium Alloy
Steels
200, 250, 300 |
80-140 |
0.0005 |
0.0005 |
0.001 |
0.002 |
0.0025 |
0.0035 |
0.004 |
0.005 |
Low Alloy Steels-Maraging
23XX, 31XX |
100-120 |
0.0005 |
0.0007 |
0.0012 |
0.002 |
0.003 |
0.004 |
0.005 |
0.006 |
|
CAST IRONS |
Ductile Iron
Ductile Cast Iron |
80-140 |
0.0005 |
0.008 |
0.0015 |
0.002 |
0.0022 |
0.003 |
0.004 |
0.006 |
Cast Iron
Malleable, Chilled |
80-140 |
0.0005 |
0.001 |
0.002 |
0.003 |
0.004 |
0.005 |
0.006 |
0.008 |
|
TITANIUM |
Titanium Alloys
5AL-2.5-Sn-ELi, 8AL-1 Mo-1V |
80-100 |
0.0003 |
0.0004 |
0.0005 |
0.001 |
0.0015 |
0.0025 |
0.003 |
0.004 |
RPM = SFM X 3.82 / TOOL
DIAMETER
FEED (IN INCHES PER MINUTE) = RPM X CPT X # OF FLUTES
* These are baseline
recommendations. Adjust your feeds and speeds according to your individual
circumstances.
Call our technical
support department for further assistance with speeds and feeds
800-447-1476
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