Tungaloy 6808633 TNMG432TM AH120 Turning Insert

Product Description

The TUNGALOY 6808633 is a solid carbide turning insert designated TNMG432TM in the AH120 grade, featuring a PVD-applied TiAlN coating for extended tool life across a range of workpiece materials. The insert conforms to both ANSI and ISO standards (ISO code TNMG220408) and carries a 60-degree triangular shape with a negative rake angle of -6 degrees and a neutral hand orientation. With 6 usable cutting edges, a 0.031-inch corner radius, and a sharp cutting edge style, this insert is engineered for roughing and medium machining operations. It is sized at 0.866 inches in length with a 0.500-inch inscribed circle and 0.188-inch thickness. Licensed machinists and CNC turning specialists are the primary installers.

This insert is suited for turning, facing, and boring operations on steel, stainless steel, cast iron, superalloys, and titanium. The AH120 grade targets a range of material grades from P15 through P25 for steel, M15 and M25 for stainless steel, K15 and K30 for cast iron, and S10 and S25 for special and super alloys. The TM chip breaker geometry is optimized for roughing through medium stock removal, making it appropriate in both production turning centers and manual engine lathes where controlled chip evacuation is needed at moderate to aggressive feed rates.

Key Features

• AH120 grade with PVD TiAlN coating for moderate wear resistance and toughness across steel, stainless, cast iron, and superalloy applications
• 60-degree triangular insert shape with 6 cutting edges, maximizing cost-per-edge efficiency
• TM chip breaker geometry rated for roughing and medium machining operations
• Sharp cutting edge style with negative rake (-6 degrees) and negative side clearance for stable clamping
• Compatible with clamp and pin insert holding methods
• Conforms to ANSI and ISO standards; ANSI code TNMG432, ISO code TNMG220408

Compatibility

Designed as an OEM-style replacement insert for toolholders accepting TNMG432 (TNMG220408) triangular inserts with clamp or pin clamping systems, as specified by ANSI and ISO insert standards.

Installation Notes

Installation is performed by a qualified machinist or CNC tooling technician. Always power down and lock out the machine spindle before indexing or replacing inserts. Seat the insert fully against the toolholder pocket before engaging the clamp or pin; do not overtighten the clamp screw beyond the toolholder manufacturer's specification. Inspect the insert seat and clamp for wear or damage each time the insert is indexed to maintain cutting accuracy and operator safety.