Sandvik Coromant 5909106 Turning Insert WNMG431SF 1105

Product Description

The SANDVIK COROMANT 5909106 is a solid carbide turning insert carrying the ANSI designation WNMG431SF and ISO code WNMG 08 04 04-SF 1105. It is part of the T-Max P series and is designed for finishing operations on stainless steel, superalloys, and titanium workpieces. The insert features an 80-degree trigon (W) shape with a neutral hand orientation and a negative side clearance, making it suitable for a wide range of external turning applications. A PVD-applied TiAlN2 coating delivers high wear resistance at elevated cutting temperatures. The SF chip breaker geometry is optimized for light, controlled cuts where surface finish and edge stability are critical. CNC lathe operators and machining center technicians install this insert in compatible T-Max P toolholders.

This insert is intended for finishing-pass turning on difficult-to-machine materials classified under ISO material group S, specifically stainless steel, superalloys, and titanium. The WNMG shape provides six usable cutting edges, which improves cost-per-edge value in high-production turning environments. A maximum depth of cut of 3.20 mm (0.1260 inches) and a corner radius of 0.40 mm (1/64 inches) support precise, low-force cutting on heat-resistant alloys where tool pressure and work hardening are primary concerns. This insert is well suited to aerospace, medical, and chemical processing component machining where tight tolerances and superior surface finishes are required.

Key Features

• TiAlN2 coating applied via PVD process for high wear resistance on superalloys and stainless steel
• SF chip breaker geometry optimized for finishing operations with controlled chip formation
• 80-degree trigon (W) shape provides six cutting edges per insert
• Maximum depth of cut: 3.20 mm (0.1260 inches) for light finishing passes
• Corner radius of 0.40 mm (1/64 inches) for precise surface finish on difficult materials
• Negative side clearance with M tolerance code for secure, repeatable clamping via clamp and pin holding method

Compatibility

Designed for use in T-Max P series toolholders that accept WNMG 08 04 04 inserts with clamp and pin insert holding. Compatible with turning applications involving stainless steel (ISO group S), superalloys, and titanium workpieces.

Installation Notes

This insert is installed by a qualified machinist or CNC tooling technician. Always index or replace inserts with the machine powered down and the spindle fully stopped. Use the correct torque wrench and manufacturer-specified clamping hardware for the T-Max P toolholder to ensure proper seating and avoid insert rocking. Inspect the insert pocket and seating surface for chips or debris before installation, as contamination can compromise edge position and surface finish results.