Carbide Insert Selection Workflow
A reliable recommendation requires the grade, chipbreaker, insert geometry and cutting parameters to be selected as one complete application solution.
Step 1 — Identify the Workpiece Material
| ISO Group | Workpiece Material | JetEdge Recommendation |
| P | Steel and alloy steel | JE8025P / JE8035P |
| M | Stainless steel | JE6025M |
| K | Cast iron | JE4025K |
| N | Aluminium and non-ferrous materials | Contact JetEdge |
| S | Heat-resistant alloys and titanium alloys | Contact JetEdge |
| H | Hardened steel | JE9025H, project-based |
Step 2 — Identify the Operation
Turning, grooving, parting, threading and milling require different insert geometries and edge designs.
Step 3 — Evaluate the Cutting Condition
• Continuous cutting
• Light interrupted cutting
• Interrupted cutting
• Stable or unstable setup
• Dry or coolant machining
Step 4 — Select the Grade
Select the grade according to the workpiece material, wear resistance requirement and required edge toughness.
Step 5 — Select the Chipbreaker and Geometry
Confirm the feed range, depth of cut, surface requirement, insert size, nose radius and toolholder compatibility.
Step 6 — Establish Starting Cutting Data
Starting cutting conditions must be adjusted according to the workpiece material, hardness, insert geometry, machine rigidity, tool overhang, coolant and production target.
Basic Calculation Reference
The following formulas provide general calculation references. Actual starting parameters must be selected according to the specific insert, workpiece and machining condition.
| Calculation | Formula |
| Turning spindle speed | n = (1000 × vc) / (π × D) |
| Turning feed rate | vf = n × fn |
| Milling spindle speed | n = (1000 × vc) / (π × D) |
| Milling feed rate | vf = n × z × fz |
Where:
n = spindle speed, r/min
vc = cutting speed, m/min
D = workpiece or cutter diameter, mm
vf = feed rate, mm/min
fn = feed per revolution, mm/rev
fz = feed per tooth, mm/tooth
z = number of effective teeth
Initial Troubleshooting Guide
| Current Problem | Initial Check |
| Edge chipping | Check setup stability, edge strength, interruption and grade toughness |
| Rapid flank wear | Review cutting speed, wear resistance and coolant condition |
| Built-up edge | Review edge sharpness, cutting speed and lubrication |
| Poor chip control | Match feed and depth of cut to the chipbreaker working range |
| Poor surface finish | Check nose radius, feed, runout, edge condition and setup rigidity |
| Unstable tool life | Check clamping, runout, interruption, batch consistency and cutting parameters |
Request Starting Cutting Data
Please provide:
• Workpiece material and hardness
• Insert and holder designation
• Machining operation
• Workpiece diameter or cutting width
• Continuous or interrupted condition
• Current cutting speed, feed and depth of cut
• Coolant condition
• Current problem and target
Need Application Support?
Send us your current insert designation, toolholder, workpiece material, hardness and machining conditions. JetEdge will review the application and recommend a suitable grade, chipbreaker and starting direction.