Sandvik Coromant 5734179 Turning Insert DNMG431-MF 1125

Product Description

The SANDVIK COROMANT 5734179 is a DNMG431-MF 1125 series turning insert designed for single-point turning operations on CNC lathes and turning centers. This solid carbide insert features a dual-layer TiAlN and AlCr2O3 PVD coating that provides heat resistance and wear protection during high-speed steel cutting. The 55-degree diamond insert shape (ISO code DNMG 15 04 04-MF 1125) delivers a balance of edge strength and clearance. With four available cutting edges and an MF chip breaker geometry, it is well suited for medium finishing passes on steel and stainless steel. Machining professionals and CNC operators typically specify this insert for its consistent performance across a range of steel alloys.

This insert is intended for use in the T-Max P series toolholding system. Primary workpiece material is steel (ISO code P), with secondary suitability for stainless steel, superalloys, and titanium. It fits standard DNMG-style toolholders that accept a 0.5-inch inscribed circle insert with clamp and pin holding methods. Typical applications include finishing and semi-finishing operations in production turning environments, including job shops, aerospace component machining, and general metalworking. The neutral hand orientation makes it compatible with both conventional and back-turning setups.

Key Features

• Solid carbide substrate with dual-layer TiAlN and AlCr2O3 PVD coating for extended tool life in steel cutting
• 55-degree diamond insert shape (Shape Code D) provides strong cutting edge geometry with adequate relief
• MF chip breaker geometry engineered for medium finishing cuts with effective chip control
• Four usable cutting edges per insert reduces per-edge tooling cost
• Neutral hand orientation suits both conventional and back-turning configurations
• Compatible with clamp and pin holding methods for secure seating in the toolholder

Compatibility

Designed for use in DNMG-style toolholders within the SANDVIK COROMANT T-Max P series system. Accepts a 0.5-inch inscribed circle and fits holders specifying clamp and pin retention. Primary workpiece material compatibility is steel (ISO P); secondary workpiece materials include stainless steel, superalloys, and titanium (ISO M, P, and S codes).

Installation Notes

Insert seating and clamping should be performed with the machine spindle fully stopped and all stored energy released per the machine tool manufacturer lockout procedure. Verify the toolholder pocket and insert seating surfaces are clean and free of chips before seating the insert. Tighten the clamp screw to the toolholder manufacturer specification — do not over-torque. Index to a fresh cutting edge only after confirming the machine is in a safe state.