ResultBest impact resistance
Cutting conditions
| Grade | KBCN7030 (coated) |
|---|---|
| Insert model | DNGA150408 |
| Workpiece material | SCM440H (42CrMoH) alloy steel (HRC50) |
| Part / feature | Shaft — outer diameter |
| Operation | Interrupted turning |
| Cutting speed vc | 170 m/min |
| Feed f | 0.1 mm/rev |
| Depth of cut ap | 0.2 mm |
| Coolant | Dry |
| Data source | Internal cutting test |
Result and comparison basis
In strongly interrupted turning of HRC 50 alloy steel, the coated KBCN7030 grade delivered the best combination of impact endurance and flank wear among the compared grades.
Comparison basis: Three competitor reference grades.
Comparative data from Koves internal cutting tests and customer field applications. Competitor grades are anonymized as reference grades. Results depend on workpiece, machine and setup; validate on your own production before adopting parameters.
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