Below are some general guidelines for cutting speeds for various materials. These are all generally on the conservative side, favoring a finished part over a broken tool. If it sounds good when you’re cutting it, then crank it!
If at all possible, use the recommendations from the tool manufacturer. If those aren’t available, then these values can generally be used successfully.
For Carbide Cutting Tools
|Mild Steel||400 SFM|
|Cast Iron||200 SFM|
|Stainless Steel||150 SFM|
|Alloy Steel/Tool Steel||200 SFM|
|High-Temp Alloys||50 SFM|