|
SFM & CPT
RECOMMENDATIONS *
UNDER 32 HRc SOFT GRADE MATERIALS
|
MATERIAL |
SFM |
1/8" |
3/16" |
1/4" |
3/8" |
1/2" |
5/8" |
3/4" |
1" |
|
NON-FERROUS
MATERIALS |
Aluminum Alloys
2024-T4/T6, 2014, 6061-T6/T651, 7075-T6 |
800-2000 |
0.001 |
0.002 |
0.003 |
0.004 |
0.005 |
0.0069 |
0.008 |
0.010 |
Magnesium
Die-Cast, Extruded |
800-1500 |
0.001 |
0.0015 |
0.002 |
0.003 |
0.004 |
0.006 |
0.008 |
0.009 |
Copper
Yellow brass, High Lead Brass, Red Brass |
800-1000 |
0.001 |
0.0012 |
0.002 |
0.0025 |
0.003 |
0.004 |
0.004 |
0.005 |
Copper Alloys
Aluminum/Bronze, Low
Silicon Bronze |
800-1000 |
0.001 |
0.0012 |
0.002 |
0.0025 |
0.003 |
0.004 |
0.004 |
0.005 |
Plastics,
Acrylics, Phenolics
Polysulfone, G10, G11 |
200-500 |
0.001 |
0.002 |
0.003 |
0.004 |
0.006 |
0.008 |
0.010 |
0.012 |
Carbon, Graphites
Carbon, Graphites |
200-500 |
0.002 |
0.003 |
0.004 |
0.006 |
0.008 |
0.009 |
0.010 |
0.012 |
|
STAINLESS STEELS |
Precipitation
13/8, 15/5, AM-350/355 |
80-250 |
0.0003 |
0.0005 |
0.001 |
0.001 |
0.002 |
0.003 |
0.004 |
0.005 |
Austenitic
200 Series, 302, 303,
304L, 316L |
100-350 |
0.0002 |
0.0003 |
0.0005 |
0.001 |
0.002 |
0.0025 |
0.0035 |
0.0045 |
Martensitic
403, 410, 416 |
80-250 |
0.0002 |
0.0003 |
0.0005 |
0.001 |
0.0015 |
0.0025 |
0.003 |
0.004 |
|
HIGH TEMP ALLOYS |
Cobalt Base
Stelite, HS-21, Haynes
25/188, X-40, L-605 |
50-90 |
0.0003 |
0.0004 |
0.0006 |
0.0008 |
0.0012 |
0.0015 |
0.002 |
0.0025 |
Nickel Base
Inconnel 600/625, Nickel
200-270, Invar, Monel 400-405, K-Monel, PermaNickel 300, Incoloy 600-800,
Mar-M-246/247 |
50-95 |
0.0004 |
0.0005 |
0.0008 |
0.001 |
0.002 |
0.0025 |
0.003 |
0.004 |
Iron Base
Incoloy 800-802,
Multimet N-155, Timken 16-26-6 |
70-125 |
0.0004 |
0.0005 |
0.001 |
0.0015 |
0.002 |
0.0025 |
0.003 |
0.004 |
|
STEELS |
High Strength
Steels
4140,4340,6150,52100,H-11, H-13 |
100-160 |
0.0004 |
0.0006 |
0.001 |
0.0015 |
0.002 |
0.0025 |
0.003 |
0.004 |
High Alloy
Steels-Mold & Die
A-2/6/10, P20, 01, 01,
06 |
100-160 |
0.0004 |
0.0006 |
0.001 |
0.0015 |
0.0015 |
0.0025 |
0.003 |
0.004 |
Medium Alloy
Steels
200, 250, 300 |
100-350 |
0.0005 |
0.00058 |
0.001 |
0.002 |
0.0025 |
0.0035 |
0.004 |
0.005 |
Low Alloy Steels-Maraging
10XX, 11XX, 13XX |
100-350 |
0.0005 |
0.0007 |
0.0012 |
0.002 |
0.003 |
0.004 |
0.005 |
0.006 |
|
CAST IRONS |
Ductile Iron
Ductile Cast Iron |
120-350 |
0.0005 |
0.008 |
0.0015 |
0.002 |
0.0022 |
0.003 |
0.004 |
0.006 |
Cast Iron
Gray Cast Iron |
120-300 |
0.0005 |
0.001 |
0.002 |
0.003 |
0.004 |
0.005 |
0.006 |
0.008 |
|
TITANIUM |
Titanium Alloys
Commercially Pure, 6AL-4V, ASTM 1/2/3, 6AL-2SN-4Zr-2Mo-Si |
100-250 |
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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