Sandvik Coromant 5732709 Turning Insert DNMG432-MR 2025

Product Description

The SANDVIK COROMANT 5732709 is a DNMG432-MR 2025 grade carbide turning insert designed for precision metal cutting on CNC lathes and turning centers. The insert features a CVD-applied multilayer coating of TiCN, AI2O3, and TiN, providing wear resistance and thermal stability during continuous and interrupted cuts. It carries a 55-degree diamond shape (ISO code D), a neutral hand orientation, and an MR chip breaker geometry optimized for stainless steel and other ISO M workpiece materials. Installed by machinists and CNC tooling technicians, this insert fits standard DNMG-style toolholders using clamp and pin holding methods.

This insert is suited for turning applications on stainless steel (ISO M material group) in both production and job-shop environments. The MR chip breaker geometry is intended for medium roughing cuts where chip control and edge durability are priorities. The 55-degree diamond shape provides two usable cutting edges per side for a total of four cutting edges per insert, supporting cost-effective tool management on high-volume turning operations.

Key Features

• CVD multilayer coating: TiCN, AI2O3, TiN for high wear and thermal resistance
• 55-degree diamond insert shape with MR chip breaker for effective chip control
• Four cutting edges per insert for extended tool life value
• Neutral hand orientation compatible with standard DNMG toolholder setups
• Clamp and pin holding method for secure seating under cutting loads
• Optimized for ISO M primary workpiece material: stainless steel

Compatibility

Designed for use in SANDVIK COROMANT T-Max P series toolholders and other standard DNMG-style clamping systems that accept DNMG 15 04 08 inserts (ISO code DNMG 15 04 08-MR 2025).

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Power down and lock out the machine spindle before changing inserts. Seat the insert fully against the toolholder pocket before tightening the clamp or pin, and inspect the pocket for chips or debris that could affect seating. Follow the toolholder manufacturer torque guidance for clamp screws to avoid cracking the carbide substrate.