Sandvik Coromant 5731726 Turning Insert DNMA432-KR 3205

Product Description

The SANDVIK COROMANT 5731726 is a solid carbide turning insert designed for precision metal cutting in CNC and manual turning operations. Manufactured to DNMA style with a 55-degree diamond shape, this insert carries a CVD-applied multilayer coating of TiCN, Al2O3, and TiN for extended tool life and wear resistance at elevated cutting temperatures. It features a 1/2 inch inscribed circle, a 1/32 inch corner radius, and a neutral hand orientation. The KR chip breaker geometry is engineered for controlled chip flow in cast iron and similar workpiece materials. Machinists and CNC operators working with ferrous materials in production environments are the primary installers of this insert.

This insert is intended for use in external turning applications where cast iron is the primary workpiece material, as indicated by its K-series ISO code classification. The T-Max P series designation identifies it for use in SANDVIK COROMANT T-Max P toolholders and compatible clamping systems. It is suited for medium to finishing cuts in production machining environments, including component manufacturing, job shops, and maintenance turning operations. The DNMA 15 04 08-KR 3205 ISO code provides direct cross-reference for toolholder and insert pairing in engineering documentation.

Key Features

• CVD-applied TiCN, Al2O3, and TiN multilayer coating for thermal and abrasion resistance
• 55-degree diamond insert shape (Shape Code D) for versatile profiling and turning access
• KR chip breaker geometry optimized for cast iron workpiece materials
• Neutral hand orientation compatible with both left- and right-hand toolholder setups
• 4 usable cutting edges per insert for extended service life per unit
• Clamp and screw holding method for secure, repeatable seating in T-Max P toolholders

Compatibility

Designed for use in SANDVIK COROMANT T-Max P series toolholders that accept DNMA style inserts with a 1/2 inch inscribed circle and clamp or screw holding. ISO code DNMA 15 04 08-KR 3205 provides the exact pairing reference for toolholder selection. Primary workpiece material designation is cast iron (ISO material code K).

Installation Notes

Insert seating and indexing should be performed with the machine fully powered down and the spindle locked. Use the appropriate torx or hex key as specified by the toolholder manufacturer when tightening the clamping screw. Inspect the insert pocket and clamping surfaces for chips or debris before seating a new insert. Proper torque and seating are critical to maintaining dimensional accuracy and preventing insert movement during cutting.