Sandvik DNMG 150608-LC 4315 CVD Carbide Turning Insert (10pc)

This is a new, factory-sealed 10-piece box of Sandvik Coromant DNMG 150608-LC 4315 (ANSI: DNMG442-LC) carbide turning inserts from the T-Max P product line, designed for external and internal longitudinal turning and facing of steel components. The ISO designation decodes as follows: D = 55° diamond shape, N = 0° clearance (negative rake), M = ±0.08 mm / ±0.05 mm tolerance class, G = with hole and chipbreaker, 15 = 15.875 mm inscribed circle, 06 = 6.35 mm thickness, 08 = 0.8 mm nose radius, LC = light-cutting chipbreaker geometry optimized for finishing and semi-finishing. Grade 4315 is a CVD-coated cemented carbide (TiCN/Al₂O₃ multilayer) in Sandvik's GC4315 series, engineered for ISO P materials (unalloyed and low-alloyed steels, P2.1.Z.AN at ≤175 HB); the gold/black dual-tone appearance visible in the photos confirms the TiN top layer over Al₂O₃ mid-layer. Published cutting data for this insert in P-steel at 175 HB: cutting speed 360–1200 m/min (1300–1100 sfm nominal), feed 0.1–0.3 mm/r (0.004–0.012 in/r), depth of cut 0.2–1.5 mm (0.008–0.059 in). Compatible toolholders use DNMG 15 06 pocket seats with 55° diamond pockets and negative-rake clamping (e.g., PDNNL/PDNNR, MDJNL/MDJNR style holders).

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