Sumitomo CNMG432EGUW AC405K CVD Carbide Turning Insert (3 Pcs)

The Sumitomo CNMG432EGUW AC405K is a new, indexable CVD-coated cemented carbide turning insert in the ISO CNMG shape — 80° diamond, 0° clearance angle, M-tolerance class, with a double-sided (G) hole and chipbreaker configuration. Decoded from the part number: size designation 4 (½ in / 12.7 mm inscribed circle), thickness designation 3 (3/16 in / 4.76 mm), and nose radius designation 2 (1/32 in / 0.794 mm); the EGUW suffix designates Sumitomo's proprietary EGU chipbreaker geometry on a negative (W) insert. The AC405K grade features a multi-layer CVD coating (TiCN + Al₂O₃ + TiN) over a fine-grained carbide substrate engineered for general-purpose turning of steel (ISO P) and cast iron (ISO K) at medium-to-high cutting speeds, delivering high wear resistance and extended tool life. These inserts are compatible with standard CNMG 432 toolholders (e.g., PCLNR/L, MCLNR/L style shanks calling for CNMG 432) and are suited for continuous to mildly interrupted cut operations on CNC lathes and turning centers. Sold as a lot of 3 new inserts from an original factory box of 15 (part 43415579), as clearly visible on the package label.

Product Specifications