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Center Line Chip Loads & SFM RC Hardness
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 |