Ingersoll Cutting Tools 5520471 Turning Insert CNMG431FC TT9215

Product Description

The INGERSOLL CUTTING TOOLS 5520471 is a solid carbide turning insert in the CNMG series, designed for precision finishing operations on difficult-to-machine materials. Carrying the ANSI code CNMG431 and ISO code CNMG120404, it features a CVD-applied multilayer coating of TiCN, Al2O3, and TiN that delivers high wear resistance across a broad hardness range. The insert geometry is neutral-hand with an 80-degree diamond (rhombic) shape, a 0.016-inch corner radius, and a negative rake and side clearance. Four usable cutting edges make this insert an efficient choice for production turning environments.

This insert is suited for finishing cuts on stainless steel, superalloys, and titanium workpieces in both job-shop and production machining settings. The FC chip breaker geometry is optimized for finishing operations, helping to control chip flow at light-to-moderate depths of cut up to 0.059 inches. Machinists working on aerospace components, medical parts, and other high-alloy applications will find the TT9215 grade characteristics appropriate for moderate to high wear-resistance demands combined with adequate toughness.

Key Features

• CVD multilayer coating: TiCN, Al2O3, and TiN for high wear resistance on stainless steel and superalloys
• FC chip breaker geometry optimized for finishing operations
• 80-degree diamond insert shape (CNMG) with negative rake for stable, chatter-resistant cuts
• Four cutting edges per insert for extended tool life per unit
• Maximum depth of cut: 0.059 inches, suitable for light finishing passes
• Clamp-style holding method compatible with standard CNMG toolholders

Compatibility

Designed as an OEM-style replacement and direct fit for standard CNMG-series toolholders accepting a 0.5-inch inscribed circle insert. Compatible workpiece materials include stainless steel (ISO material code M), superalloys, and titanium (ISO material code S).

Installation Notes

Installation is performed by a qualified machinist or toolroom technician. Power down and lock out the machine spindle before seating or indexing the insert. Use the appropriate torque wrench and clamp hardware specified by the toolholder manufacturer when securing the insert. Inspect the pocket seat and clamp for wear or debris before installation to ensure proper seating and avoid insert breakage during the cut.