best carbide grade for Inconel 718. Get instant SFM, m/min, RPM for your machining parameters.
Let our engineers find the right factory for your specs. 100% Quality Guaranteed.
Request a Proposal →Not all tooling manufacturers publish their SFM to m/min Speed Converter the same way. While the underlying physics doesn't change, the recommended ranges, safety margins, and application guidance vary considerably across Dormer Pramet, Korloy, and Nachi. Understanding these differences helps you make better tooling decisions.
Takes a material-group-first approach with CemeCon-coated grades as default. Their application guides provide conservative starting values with wide adjustment bands. CoroPlus digital integration offers real-time SFM to m/min Speed Converter optimization via ToolGuide.
Known for aggressive starting parameters — particularly in steel and cast iron. NOVO digital platform auto-adjusts SFM to m/min Speed Converter based on tool path engagement. Often the go-to reference for high-feed applications.
Pioneers of multi-directional SFM to m/min Speed Converter — their IQ series inserts thrive in turning profiles where engagement angle shifts continuously. Application-specific grades for ISO P/M/K with narrow, optimized SFM to m/min Speed Converter windows.
Key takeaway: Always default to your specific tool supplier's SFM to m/min Speed Converter charts. The differences between Dormer Pramet, Korloy, and Nachi reflect different coating chemistries (CemeCon vs. in-house) and carbide substrate formulations. A Dormer Pramet parameter won't necessarily translate to a Korloy equivalent — even at the same ISO grade designation.
Surface speed (cutting speed) is the relative velocity between the cutting edge and the workpiece surface. It is measured in surface feet per minute (SFM) in imperial shops and metres per minute (m/min) in metric shops.
SFM is standard in the United States where imperial units dominate machine shop practice. Metric countries (Europe, Asia) use m/min. The conversion factor is 1 m/min = 3.28084 SFM.
Surface speed depends on the workpiece material and cutting tool material. Carbide in mild steel: 150-300 m/min (490-980 SFM). Carbide in aluminium: 300-600 m/min (980-1970 SFM). HSS in steel: 20-40 m/min (65-130 SFM).
Excessive surface speed generates excessive heat at the cutting edge, leading to rapid flank wear, built-up edge, poor surface finish, and potential insert failure. Reduce speed by 15-20% if you see burning or discoloration.
Enter your tool or workpiece diameter and RPM to get the surface speed in both m/min and SFM. Alternatively, work backwards from a target surface speed to find the required RPM.
Continue with closely related tools from the machining calculator library.
Use the calculator freely. If the result points to a tooling or process problem, we can source the exact carbide tooling you need from vetted factories in China. Compare factory-direct pricing.
Explore more precision machining tools and calculators