TPGT 16T308 NS520 Wendeplatten - Tungaloy

Consistent surface quality and predictable tool life result from the combination of the NS520 cermet grade and a 0.8 mm corner radius, delivering reliable finishing performance on steel. The ISO-compatible triangular geometry with a 60° main angle and a cylindrical hole with a 40°–60° countersink ensures secure clamping in standard holders and straightforward tool changes. Order this Tungaloy insert via Metav Werkzeuge or consult their specialists for tailored application guidance.

TPGT16T308 NS520 ISO turning insert — Tungaloy

A TPGT16T308 NS520 indexable turning insert designed for finish to light finishing of steel in external and internal turning operations

• NS520 cermet for fine finishing
• 60° triangular insert for versatile turning
• 0.8 mm corner radius for superior surface finish
• Cylindrical hole with 40°–60° countersink

Achieve consistent surface finish and dimensional accuracy

The NS520 cutting grade combines cermet cutting material characteristics with a coating suitable for fine finishing, prioritising surface quality and even wear. A 0.8 mm corner radius minimises scallop height while reducing the risk of premature edge chipping, which supports tighter dimensional control during finishing passes. Where part tolerances and surface integrity are critical, this combination reduces rework and improves first-pass yield by favouring uniform flank wear and stable cutting conditions.

Reduce setup time with ISO compatibility and secure mounting

The triangular geometry with a 60° main angle and ISO designation 16T308 ensures compatibility with a wide range of standard external holders and boring bars. A cylindrical hole with a one-sided countersink (40°–60°) provides secure clamping and repeatable location, while a plate thickness of 3.97 mm and size 16 maintain the rigidity required for light finishing. The ISO system approach simplifies tool inventory and replacement procedures, allowing rapid changeovers and consistent positioning in high-mix production environments.

Optimised for finishing steel and productive machining

As a coated cermet grade, NS520 is tuned for finishing to light machining of steel, offering stable chip formation with the supplied single-sided chipbreaker for controlled curl and evacuation. The combination of material, chip control and geometry results in better surface finish and longer steady-state life in finishing operations. Use in both external and internal turning where surface integrity and repeatable geometry are required; the insert supports a workflow focused on productivity and predictable tool costs per part.

For machining-ready guidance and stock information on the Tungaloy TPGT16T308 NS520 turning inserts, contact Metav Werkzeuge for availability and tailored machining recommendations.

Technical Data

• Article number: 6808979
• Manufacturer SKU: TUN6808979
• SKU: 6808979-Tungaloy
• Model series: ISO-Drehwendeschneidplatten

Facts

• Corner radius: 0.8 mm
• Main angle: 60°
• Clearance (relief) angle: 11°
• Plate thickness: 3.97 mm
• Plate size: 16 mm

Special features

• Material: cemented carbide
• Cutting grade: NS520 (cermet / coated cermet)
• Shape: triangular
• Hole: cylindrical hole with one-sided countersink (40°–60°)
• Chipbreaker: single-sided
• ISO designation: 16T308
• Application: turning (external and internal)
• Typical system: indexable insert + external holder or boring bar + clamping pad and screws

FAQ

What machining tasks suit this insert best?
The NS520 cermet grade in the TPGT16T308 is intended for finish to light finishing of steel in both external and internal turning, where high surface quality and dimensional control are required.

Which holders are compatible with this insert?
Compatibility depends on form, relief angle, tolerance class, fastening and plate thickness; the ISO triangular form (16T308) and the cylindrical hole with countersink allow use in standard ISO-compatible turning holders and boring bars.

How does the NS520 cermet compare to conventional carbide?
NS520 cermet provides superior surface finish and more uniform wear in finishing operations compared with some cemented carbides, supporting tighter tolerances and improved part appearance when using the Tungaloy insert.

Is the chip control suitable for unstable setups?
The single-sided chipbreaker is designed for controlled chip formation in finishing passes; stable clamping and appropriate cutting parameters will ensure effective evacuation and consistent results with this insert.

What are the key dimensional data for tool selection?
Refer to the corner radius (0.8 mm), plate thickness (3.97 mm), plate size (16 mm), main angle (60°) and relief angle (11°) when matching the insert to holders and setting cutting parameters for the Tungaloy turning insert.

Manufacturer/Responsible: Tungaloy-NTK Germany GmbH, Katzbergstraße 3a, 40764 Langenfeld - Protected trademarks and product names are the property of their respective owners. Brand names and protected trademarks are mentioned solely for explanatory purposes. There is no affiliation between our company and the mentioned brands. The item offered is an original, brand-new product from the manufacturer.