Tungaloy DNMG150612-SM AH630 Carbide Turning Insert (10pc)
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The Tungaloy DNMG150612-SM AH630 (also designated DNMG 443 SM AH630) is a new, 55° diamond-shaped (D), negative-rake (N), ground-periphery (G) indexable carbide turning insert with a 7° clearance angle (M tolerance class), double-sided geometry, and an SM chipbreaker optimized for stainless steel (ISO M) finishing to medium turning. The AH630 grade is a CVD-coated cemented carbide in Tungaloy's AH series, featuring a TiCN/Al₂O₃ multilayer coating with a black oxide top layer visible in the photos, designed for excellent crater and flank wear resistance on stainless steels and other difficult-to-cut materials. Per the Tungaloy packaging label, recommended cutting parameters for stainless steel are: feed rate f = 0.2–0.5 mm/rev (0.008–0.020 ipr) and cutting speed Vc = 90–190 m/min (300–620 sfm). This insert has an inscribed circle of 9.525 mm (3/8 in), a thickness of 6.35 mm (1/4 in, ANSI size 4), a nose radius of 1.2 mm (ANSI size 3 → "12"), and a central through-hole for screw-on toolholder clamping; compatible with standard DDJNR/DDJNL and MDJNR/MDJNL style toolholders accepting DNMG 15 series inserts. Sold as a new factory pack of 10 inserts.
Product Specifications
| Brand | Tungaloy |
| MPN | DNMG150612-SM AH630 |
| ANSI Designation | DNMG 443 SM |
| ISO Insert Shape | D — 55° Diamond |
| Clearance Angle | N — 0° (negative rake) |
| Tolerance Class | M |
| Insert Type / Chipbreaker | G (with hole) / SM |
| Inscribed Circle (IC) | 15.875 mm (5/8 in) |
| Thickness | 6.35 mm (1/4 in) |
| Nose Radius | 1.2 mm |
| Grade | AH630 |
| Coating | CVD TiCN/Al₂O₃ multilayer (black) |
| ISO Material Applicability | M (Stainless Steel), P, O |
| Feed Rate (f) | 0.2–0.5 mm/rev (0.008–0.020 ipr) |
| Cutting Speed (Vc) | 90–190 m/min (300–620 sfm) |
| Quantity | 10 inserts per pack |
| Country of Origin | Japan |
| Condition | New |