Sandvik Coromant 8020998 Turning Insert Tpmt 06 T1 04-PF 4415

Product Description

The SANDVIK COROMANT 8020998 is a TPMT-series triangular turning insert designed for precision metal cutting on CNC lathes and turning centers. Manufactured from solid carbide with a CVD-applied multilayer coating of TiCN, Al2O3, and TiN, this insert is engineered for consistent performance on steel workpieces. It features a 0.156-inch inscribed circle diameter and a 0.0156-inch corner radius, making it well-suited for finishing and semi-finishing passes where edge accuracy and surface finish matter. The neutral hand orientation supports use in both left- and right-hand toolholders. Installation is handled by licensed machinists and CNC tooling technicians in job shop and production environments.

This insert is intended for turning operations on steel and similar ferrous materials. The PF chip breaker geometry promotes controlled chip formation during light to medium cuts. The CVD coating provides thermal resistance and extended wear life in continuous or mildly interrupted cuts. Typical applications include OD turning of carbon steel, alloy steel, and comparable workpiece materials in both job shop and high-volume production settings. The TPMT insert style is held by clamp or screw in compatible TPMT-style toolholders.

Key Features

• CVD multilayer coating: TiCN, Al2O3, and TiN for wear resistance and thermal stability
• Triangular insert shape (T) with neutral hand — fits left- and right-hand holders
• 0.0156-inch corner radius for finishing and semi-finishing cut profiles
• 0.156-inch inscribed circle for compatibility with standard TPMT toolholder pockets
• PF chip breaker geometry optimized for controlled chip evacuation on steel
• Manufacturer Grade 4415 — a coated carbide grade rated for steel turning

Compatibility

Designed for use in TPMT-style clamp or screw-lock toolholders accepting a triangular insert with a 0.156-inch inscribed circle. Compatible with toolholder systems specifying ISO code TPMT 06 T1 04. Verify toolholder pocket geometry and clamping method before installation.

Installation Notes

Insert seating and clamping should be performed by a qualified machinist or CNC tooling technician. Power down and lock out the machine spindle before changing inserts. Seat the insert fully against the pocket walls and locating pin before tightening the clamp or screw. Inspect the toolholder pocket for wear or debris that could affect insert seating and cutting edge repeatability.