Widia 4171504 Turning Insert CNMG432RH WP25CT Carbide

Product Description

The WIDIA 4171504 is a CNMG432RH WP25CT-grade carbide turning insert designed for general turning operations on steel and cast iron workpieces. It carries a multilayer CVD coating stack - TiN, TiCN, Al2O3, and ZrCN - applied via MT-CVD process to extend wear resistance and tool life under continuous and interrupted cutting conditions. The insert features an 80-degree diamond (rhombic) shape, a negative rake geometry, and a honed cutting edge with an RH chip breaker. With 8 usable cutting edges, this insert delivers consistent cost-per-edge performance in production turning environments. Typical installers are CNC machinists and tool-room technicians working on lathes and turning centers.

This insert is intended for turning applications on steel (ISO P25 material grade) and cast iron (ISO K). The RH chip breaker geometry is suited for medium-depth roughing and semi-finishing passes. The neutral hand orientation allows use on standard CNMG-style toolholders without orientation restrictions. It is appropriate for both light production and job-shop environments where consistent chip control on ferrous materials is required. The insert conforms to ANSI and ISO standards and carries the ISO designation CNMG120408RH, also referenced by the industry standard number CNMG432RH.

Key Features

• Multilayer CVD coating: TiN, TiCN, Al2O3, ZrCN for wear and crater resistance on ferrous materials
• 80-degree diamond (rhombic) insert shape with negative rake for strong cutting edge geometry
• RH chip breaker optimized for steel and cast iron turning at medium material removal rates
• 8 cutting edges per insert for lower cost per edge in production turning
• Neutral hand - compatible with standard CNMG clamp-and-pin toolholders
• Conforms to ANSI and ISO standards; ISO code CNMG120408RH

Compatibility

Designed for use in CNMG-style clamp-and-pin toolholders accepting a 0.5 inch inscribed circle insert with a 3/16 inch thickness. Compatible toolholders must accommodate the CNMG432 insert size code. Primary workpiece materials are steel (ISO P) and cast iron (ISO K).

Installation Notes

Installation is performed by machinists on CNC or manual lathes using the appropriate CNMG clamp-and-pin toolholder. Ensure the machine spindle is fully stopped and the toolholder is secured in the turret before seating or indexing the insert. Inspect the insert pocket and seating surfaces for chips or debris before clamping to ensure proper insert support and edge repeatability. Follow the toolholder manufacturer torque specifications for the clamping screw.