Sandvik Coromant 5756527 Turning Insert WNMG432-MM 1115

Product Description

The SANDVIK COROMANT 5756527 is a solid carbide turning insert in the WNMG432-MM 1115 designation, part of the T-Max P series. It features a trigon (80-degree included angle) insert shape with a neutral hand orientation and a 0 degree relief angle (clearance code N, tolerance code M). The insert carries a dual-layer PVD coating of TiAlN and AlCr2O3, engineered to resist heat and wear during continuous and interrupted turning operations. With 6 available cutting edges per insert and a chip breaker geometry designated MM, this grade is targeted at medium machining applications in difficult-to-cut materials. Licensed machinists and CNC turning specialists install these inserts in indexable toolholders designed for WNMG-style seats.

This insert is primarily specified for turning stainless steel (ISO material code M) and is rated for secondary use on superalloys and titanium (ISO material code S). The MM chip breaker geometry is designed to manage tough, stringy chips common in stainless steel and superalloy turning, making it well suited for medium depth-of-cut finishing and semi-finishing passes on CNC lathes and turning centers in both job shop and production environments. The ISO designation for this insert is WNMG 08 04 08-MM 1115.

Key Features

• Dual PVD coating (TiAlN and AlCr2O3) for high heat resistance and extended tool life in stainless and superalloy turning
• MM chip breaker geometry controls stringy chips in medium-finish stainless steel and titanium applications
• 6 indexable cutting edges per insert for maximum value per unit
• Trigon (W) insert shape with 80-degree included angle provides strong cutting edge with versatile entry angles
• Compatible with clamp and pin insert holding methods
• Neutral hand orientation suits standard right-hand and left-hand toolholder configurations

Compatibility

Designed as an OEM-style replacement turning insert for indexable toolholders accepting WNMG-style inserts with a 1/2-inch inscribed circle. ISO designation WNMG 08 04 08-MM 1115 can be used to cross-reference compatible toolholder pocket specifications.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Power down and lock out the machine spindle before indexing or replacing inserts. Use the correct torque wrench and manufacturer-specified clamping hardware for the toolholder seat to ensure proper insert seating — do not overtighten the clamp screw by hand estimation alone. Inspect the insert pocket and shim for wear or debris before seating a new insert.