Seco 03280031 WNMG432-M3 TM3501 Carbide Turning Insert

Product Description

The SECO 03280031 is a solid carbide turning insert in the WNMG-M3 series, designed for precision metal removal on CNC lathes and turning centers. It carries a CVD-applied Duratomic coating of TiCN, Al2O3, and Cr, which extends tool life during demanding cuts. The insert features a trigon (W) shape with an 80-degree included angle, a negative rake geometry, and a chamfered and honed cutting edge. With 6 usable cutting edges and an M3 chip breaker, this insert delivers consistent chip control across a range of depths. It meets both ANSI and ISO standards and is cataloged under ISO code WNMG080408-M3.

This insert is sized for applications in stainless steel (primary) and steel (secondary) workpiece materials, making it a practical choice for shops running mixed-material production schedules. The M3 chip breaker geometry handles boring, facing, and turning operations. It is appropriate for medium to roughing passes and suits material grades M30 and M40 per ISO classification. The neutral hand orientation gives machinists flexibility in setup across standard WNMG-compatible toolholders using clamp, pin, or lever lock holding methods.

Key Features

• CVD Duratomic coating — TiCN, Al2O3, and Cr layers for extended wear resistance
• 6 cutting edges per insert for maximum cost-per-edge value
• M3 chip breaker optimized for stainless steel and steel turning
• Negative rake, chamfered and honed edge for stable, predictable cuts
• Compatible with clamp, pin, and lever lock toolholder systems
• Meets ANSI and ISO standards; ISO code WNMG080408-M3

Compatibility

Designed for use in WNMG-style toolholders that accept a 1/2-inch inscribed circle trigon insert with clamp, pin, or lever lock holding. Verify toolholder pocket geometry and insert seat specifications before installation.

Installation Notes

Installation is performed by a machinist or CNC toolroom technician. Power down and lock out the machine before changing inserts. Use the appropriate torque wrench and clamp screw specified by the toolholder manufacturer — do not overtighten, as this can crack the carbide. Inspect the insert seat and shim for damage or debris before seating the new insert.