Tungaloy 6811957 SNMG432TH AH120 Carbide Turning Insert

Product Description

The TUNGALOY 6811957 is a solid carbide turning insert in the SNMG-TH series, designated SNMG432TH with manufacturer grade AH120. It features a TiAlN coating applied via PVD process, a negative rake angle of -20 degrees, and a chamfered and honed cutting edge style. The insert carries a square shape with a 90-degree included angle, a 0.5000-inch inscribed circle, and a 0.0315-inch corner radius. With 8 available cutting edges and a neutral hand orientation, this insert is suited for high-productivity general turning operations across a range of workpiece materials. Licensed machinists and CNC lathe operators are the primary installers.

This insert is designed for turning, facing, and boring applications on steel, stainless steel, cast iron, superalloys, titanium, and hard materials, corresponding to ISO material codes P, M, K, S, and H. Material grades supported include P15, P25, M15, M25, K15, K30, S10, and S25. It is well matched to production environments where multiple workpiece material types are encountered on the same tooling setup. The TH chip breaker geometry is optimized for controlled chip formation across these material groups.

Key Features

• TiAlN PVD coating for wear resistance across steel, stainless, cast iron, superalloys, and hard materials
• 8 usable cutting edges per insert, reducing per-edge tooling cost
• Chamfered and honed cutting edge style for edge strength and surface finish consistency
• TH chip breaker geometry for reliable chip control in turning, facing, and boring
• Negative rake angle (-20 degrees) supports interrupted cuts and harder workpiece materials
• Compatible with clamp and pin insert holding methods
• Meets ANSI and ISO standards; ISO code SNMG432

Compatibility

Designed as an OEM-style replacement or standard fitment insert for toolholders accepting SNMG 432 style inserts with clamp or pin holding, conforming to ANSI and ISO SNMG432 specifications.

Installation Notes

Installation is performed by machinists or CNC toolroom technicians. Power down and lock out the machine spindle before changing inserts. Seat the insert fully against the toolholder pocket and verify clamp or pin engagement before resuming operation. Do not run a chipped or worn insert, as edge failure can damage the toolholder pocket.