Sumitomo DCMT070204N-SU AC320P Carbide Turning Insert 10pc
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The Sumitomo DCMT070204N-SU is a new, factory-packed carbide turning insert in grade AC320P, a PVD-coated cemented carbide grade optimized for finishing to light-medium turning of steel (ISO P workpiece material). Decoded per ISO 1832: D = 55° diamond shape, C = 7° clearance angle, M = medium tolerance class, T = with hole and chipbreaker (top-face), 07 = 7.94 mm (5/16 in) inscribed circle, 02 = 2.38 mm thickness, 04 = 0.4 mm nose radius, N-SU = negative rake / SU chipbreaker geometry designed for light finishing cuts. The AC320P grade features Sumitomo's ACE Coat PVD TiAlN-based multilayer coating, delivering high wear resistance and thermal stability, suitable for finishing carbon steel, alloy steel, and hardened steel at cutting speeds of 200–340 m/min (660–1115 SFM) with feed rates of 0.05–0.3 mm/rev (0.002–0.012 IPR) as stated on the package label. These inserts are compatible with DCLNR/L, SDNCN, and other DCMT-compatible toolholders requiring a 55° diamond seat, and are sold as a factory box of 10 inserts made in Japan.
Product Specifications
| Brand | Sumitomo Electric |
| MPN | DCMT070204N-SU |
| Alternate ISO Designation | DCMT21.51ESU |
| Grade | AC320P |
| Insert Shape | D — 55° Diamond |
| Clearance Angle | C — 7° |
| Tolerance Class | M |
| Chipbreaker | SU (finish/light-medium turning) |
| Inscribed Circle (IC) | 7.94 mm (5/16 in) |
| Thickness | 2.38 mm (3/32 in) |
| Nose Radius | 0.4 mm (1/64 in) |
| Cutting Edge Style | Negative rake, single-sided |
| Coating | PVD TiAlN multilayer (ACE Coat) |
| ISO Material Group | P (Steel) |
| Recommended Cutting Speed | 200–340 m/min (660–1115 SFM) |
| Recommended Feed Rate | 0.05–0.3 mm/rev (0.002–0.012 IPR) |
| Application | Finish (F) |
| Country of Origin | Japan |
| Quantity per Box | 10 inserts |
| Condition | New |