Seco 03273962 Turning Insert WNMG432-MF4 TM1501 Carbide

Product Description

The SECO 03273962 is a solid carbide turning insert in the WNMG432-MF4 series, designed for precision metal cutting on CNC lathes and turning centers. It carries grade TM1501 with a CVD-applied Duratomic coating of TiCN and Al2O3 for enhanced wear resistance and thermal stability. The insert features a trigon (W) shape with an 80-degree included angle, a 0.5-inch inscribed circle, and a 1/32-inch (0.0315-inch) corner radius. Six cutting edges per insert reduce tooling cost per part. The MF4 chip breaker geometry and chamfered-and-honed cutting edge style make this insert well suited for finishing and medium turning operations on difficult-to-machine materials.

This insert is designed primarily for machining stainless steel (ISO material code M) and is also rated for steel (ISO material code P), covering material grades M15, M20, and M25. Typical applications include turning, facing, and boring operations. The neutral hand orientation and negative rake geometry make it compatible with standard WNMG-style toolholders used in production and job-shop turning environments. It is sold individually but requires a minimum order quantity of 10 units. Machinists and CNC operators in aerospace, medical, and general metalworking shops will find this insert suitable for controlled-feed finishing passes and light to medium material removal.

Key Features

• CVD Duratomic TiCN and Al2O3 coating for high wear resistance and thermal stability
• MF4 chip breaker geometry optimized for finishing and medium cuts on stainless steel
• Six usable cutting edges per insert to lower cost per edge
• Chamfered and honed cutting edge for improved edge strength and surface finish
• Compatible with clamp, pin, and lever-lock insert holding methods
• Meets ANSI and ISO standards; ISO designation WNMG080408-MF4

Compatibility

Designed for use in WNMG-style turning toolholders that accept a W-shape (trigon) insert with a 0.5-inch inscribed circle, 3/16-inch thickness, and clamp, pin, or lever-lock holding methods. Suitable for toolholders conforming to ANSI and ISO WNMG standards.

Installation Notes

Insert installation and indexing should be performed by a qualified machinist or CNC tooling technician with the machine fully stopped and in a safe, locked-out state. Ensure the toolholder pocket and clamping surfaces are clean and free of chips before seating the insert. Torque the clamping screw per the toolholder manufacturer's specification, not the insert manufacturer's. Verify insert orientation and edge selection before resuming cutting operations.