Sandvik Coromant 5732639 Turning Insert DNMG432-MM 1115

Product Description

The SANDVIK COROMANT 5732639 is a DNMG432-MM 1115 grade solid carbide turning insert designed for precision metal cutting in CNC lathe and turning center applications. The insert features a PVD-applied TiAlN and AlCr2O3 dual-layer coating that delivers heat and wear resistance at the cutting edge. The 55-degree diamond shape (Insert Shape Code D) provides a strong, versatile geometry suited to both roughing and finishing passes. With a 0.5789-inch cutting edge length and a 1/32-inch corner radius, it is sized for controlled material removal with a neutral hand orientation. Licensed machinists and CNC operators install this insert as part of indexable tooling systems on production turning equipment.

This insert is intended for turning stainless steel as its primary workpiece material (ISO material code M), with secondary suitability for superalloys and titanium (ISO material code S). It belongs to the SANDVIK COROMANT T-Max P series, which is designed for external and internal turning operations in demanding production environments. The MM chip breaker geometry is optimized for medium machining conditions where chip control and surface finish are critical. It is held in the toolholder via clamp and pin, and is compatible with standard DNMG-style toolholders. The ISO designation for this insert is DNMG 15 04 08-MM 1115.

Key Features

• PVD-coated TiAlN and AlCr2O3 dual-layer coating for heat and wear resistance
• 55-degree diamond insert shape with neutral hand orientation
• MM chip breaker geometry for controlled chip formation in medium turning conditions
• 4 usable cutting edges for extended tooling economy
• 1/32-inch corner radius (0.0313 inches) for versatile finishing and semi-finishing work
• Clamp and pin holding method compatible with standard DNMG toolholder pockets

Compatibility

Designed for use in standard DNMG-style indexable turning toolholders within the SANDVIK COROMANT T-Max P series. The ISO code DNMG 15 04 08-MM 1115 confirms fitment to toolholders specifying DNMG 15 04 08 insert geometry. Primary application is stainless steel; secondary applications include superalloys and titanium.

Installation Notes

Installation should be performed by a qualified CNC machinist or toolroom technician with the machine powered down and the spindle locked before indexing or replacing the insert. Ensure the toolholder pocket and seating surfaces are clean and free of chips before seating the insert. Use the appropriate torque wrench and clamp hardware specified by the toolholder manufacturer - do not overtighten the clamp screw, as this can fracture the carbide substrate. Follow your facility safety plan and applicable OSHA machine guarding standards when working near cutting tools.