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Material | Rockwell Hardness | Uncoated Speed (SFM) | AlTiN+ Coated Speed (SFM) | Feed (IPT) for Calculated Cutting Diameter <0.125 | Feed (IPT) for Calculated Cutting Diameter .125-.1875 | Feed (IPT) for Calculated Cutting Diameter .1875-250 | Feed (IPT) for Calculated Cutting Diameter .250-.3125 | Feed (IPT) for Calculated Cutting Diameter .3125-.375 | Feed (IPT) for Calculated Cutting Diameter .375-.500 | Feed (IPT) for Calculated Cutting Diameter .500-.625 | Feed (IPT) for Calculated Cutting Diameter .625-.750 |
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Gray Cast Iron | 85Rb | 250 | 450 | 0.0012 | 0.0022 | 0.0035 | 0.0045 | 0.0050 | 0.0055 | 0.0070 | 0.0090 |
Ductile Cast Iron | 85Rb | 180 | 375 | 0.0007 | 0.0015 | 0.0020 | 0.0028 | 0.0035 | 0.0040 | 0.0055 | 0.0070 |
Carbon Steel | 18Rc | 225 | 450 | 0.0007 | 0.0015 | 0.0022 | 0.0028 | 0.0035 | 0.0045 | 0.0055 | 0.0070 |
Alloy Steel | 20Rc | 200 | 400 | 0.0006 | 0.0012 | 0.0020 | 0.0025 | 0.0030 | 0.0040 | 0.0050 | 0.0060 |
Heat Treated Alloys | 40Rc | 100 | 200 | 0.0003 | 0.0007 | 0.0010 | 0.0012 | 0.0018 | 0.0020 | 0.0028 | 0.0035 |
Tool Steel | 20Rc | 150 | 325 | 0.0006 | 0.0010 | 0.0018 | 0.0022 | 0.0028 | 0.0035 | 0.0045 | 0.0055 |
300 Stainless Steel | 80Rb | 120 | 250 | 0.0005 | 0.0009 | 0.0015 | 0.0018 | 0.0022 | 0.0028 | 0.0035 | 0.0045 |
400 Stainless Steel | 95Rb | 140 | 325 | 0.0004 | 0.0009 | 0.0012 | 0.0018 | 0.0022 | 0.0025 | 0.0035 | 0.0045 |
Nickel Alloy | 20Rc | 120 | 175 | 0.0005 | 0.0009 | 0.0012 | 0.0018 | 0.0022 | 0.0028 | 0.0035 | 0.0045 |
Cobalt Alloy | 20Rc | 140 | 225 | 0.0003 | 0.0006 | 0.0009 | 0.0012 | 0.0015 | 0.0018 | 0.0022 | 0.0030 |
Titanium | 25Rc | 160 | 250 | 0.0005 | 0.0009 | 0.0012 | 0.0018 | 0.0022 | 0.0028 | 0.0035 | 0.0045 |
Aluminum | 60Rb | 1000 | 1900 | 0.0010 | 0.0028 | 0.0040 | 0.0055 | 0.0070 | 0.0080 | 0.0110 | 0.0130 |
Brass, Zinc, Copper | 41Rb | 320 | 600 | 0.0008 | 0.0015 | 0.0022 | 0.0030 | 0.0040 | 0.0045 | 0.0060 | 0.0080 |