Center Line Chip Loads & SFM RC Hardness

Manufacturing & Design

The following tables specify the Center Line Chip loads and SFM RC Hardness for various engineering materials and high speed end mill cutters.

End Mill Chart Peripheral Finishing

Center Line Chip Loads and SFM by RC Hardness

  SFM SFM SFM SFM SFM
600.00 500.00 450.00 350.00 275.00
Steel< 45 RC Steel 45 to 50 RC Steel 50 to 55 RC Steel 55 to 60 RC Steel 60 to 65 RC
Tool Diameter dec eq chip load chip load chip load chip load chip load
1/32 0.0312 0.00031 0.00021 0.00014 0.00012 0.00011
3/64 0.0468 0.00046 0.00032 0.00021 0.00019 0.00016
1/16 0.0625 0.00061 0.00042 0.00028 0.00025 0.00022
5/64 0.0781 0.00076 0.00053 0.00035 0.00031 0.00027
3/32 0.0937 0.00092 0.00063 0.00042 0.00037 0.00033
7/64 0.1093 0.00107 0.00074 0.00049 0.00044 0.00038
1/8 0.125 0.00122 0.00084 0.00056 0.00050 0.00044
9/64 0.1406 0.00138 0.00095 0.00063 0.00056 0.00049
5/32 0.1562 0.00153 0.00105 0.00070 0.00062 0.00055
11/64 0.1718 0.00168 0.00116 0.00077 0.00069 0.00060
3/16 0.1875 0.00184 0.00127 0.00084 0.00075 0.00066
13/64 0.2031 0.0020 0.0014 0.0009 0.0008 0.0007
7/32 0.2187 0.0021 0.0015 0.0010 0.0009 0.0008
15/64 0.2343 0.0023 0.0016 0.0011 0.0009 0.0008
1/4 0.25 0.0024 0.0017 0.0011 0.0010 0.0009
17/64 0.2656 0.0026 0.0018 0.0012 0.0011 0.0009
9/32 0.2812 0.0028 0.0019 0.0013 0.0011 0.0010
19/64 0.2968 0.0029 0.0020 0.0013 0.0012 0.0010
5/16 0.3125 0.0031 0.0021 0.0014 0.0013 0.0011
21/64 0.3281 0.0032 0.0022 0.0015 0.0013 0.0011
11/32 0.3437 0.0034 0.0023 0.0015 0.0014 0.0012
23/64 0.3593 0.0035 0.0024 0.0016 0.0014 0.0013
3/8 0.375 0.0037 0.0025 0.0017 0.0015 0.0013
25/64 0.3906 0.0038 0.0026 0.0018 0.0016 0.0014
13/32 0.4062 0.0040 0.0027 0.0018 0.0016 0.0014
27/64 0.4218 0.0041 0.0028 0.0019 0.0017 0.0015
7/16 0.4375 0.0043 0.0030 0.0020 0.0018 0.0015
29/64 0.4531 0.0044 0.0031 0.0020 0.0018 0.0016
15/32 0.4687 0.0046 0.0032 0.0021 0.0019 0.0016
31/64 0.4843 0.0047 0.0033 0.0022 0.0019 0.0017
1/2 0.5 0.0049 0.0034 0.0023 0.0020 0.0018
9/16 0.5625 0.0055 0.0038 0.0025 0.0023 0.0020
5/8 0.625 0.0061 0.0042 0.0028 0.0025 0.0022
3/4 0.75 0.0073 0.0051 0.0034 0.0030 0.0026
7/8 0.875 0.0086 0.0059 0.0039 0.0035 0.0031
1 1 0.0098 0.0068 0.0045 0.0040 0.0035
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