TPGT 090204 NS520 Wendeplatten - Tungaloy

Take advantage of a finishing-grade Cermet NS520 for improved surface quality together with a 0.4 mm nose radius for consistent dimensional control; the compact triangular form and 11° clearance ensure compatibility with standard ISO turning holders. Order directly via Metav Werkzeuge or consult our specialists for holder matching and process setup.

TPGT090204 NS520 turning indexable insert by Tungaloy — ISO 090204, triangular 60° geometry

The TPGT090204 NS520 is an ISO-standard triangular turning insert designed for finishing and light turning of steel, offering optimised wear behaviour and stable surface results in precision applications.

• ISO triangular insert, 60° geometry
• Cermet grade NS520 for finishing steel
• 0.4 mm nose radius for fine surface finish
• Cylindrical hole with single-side countersink

Consistent finishing and dimensional stability

The triangular, ISO-standard geometry delivers a predictable cutting edge for precise finishing and close tolerances. With the Cermet NS520 grade, the insert is formulated to provide a uniform wear pattern, which supports repeatable part quality over longer tool life. The relatively small 0.4 mm nose radius concentrates the cutting forces for fine surface generation while helping to maintain dimensional accuracy in external and internal turning operations. In practice, this combination reduces rework and contributes to a more economical production flow by lowering scrap rates and stabilising cycle times.

Mounting, compatibility and process guidance

Compatibility with toolholders is determined by shape, clearance angle (11°), tolerance class, fastening method, size and thickness; the insert’s cylindrical hole with a one-sided countersink (40°–60°) enables secure seating and reliable clamping with common ISO holders. The 2.38 mm plate thickness and triangular 09 size are standard dimensions that simplify selection for modular turning systems. When integrating the insert into an existing toolset, match the holder form and fastening geometry; selecting a holder with appropriate rigidity and positive support ensures the chipbreaker and edge condition perform as intended for finishing tasks.

Why the NS520 cermet improves productivity

The grade’s formulation focuses on surface integrity and consistent wear rather than aggressive metal removal, making it particularly suitable for final passes where surface finish and dimensional control are priorities. The single-sided chipbreaker promotes manageable chip formation during finishing operations, while the cermet’s hardness and coating characteristics contribute to stable edge retention. For workshops aiming to enhance first-pass quality and reduce inspection cycles, the insert offers a technically efficient solution that balances tool life with surface performance.

For technical consultation on Tungaloy turning inserts or to order item TUN6808894 directly, contact Metav Werkzeuge at info@metav-werkzeuge.com or call +49 2822 7131930 — our team will advise on holder compatibility and optimal cutting parameters.

Technical data

• Article number: 6808894-Tungaloy
• Manufacturer SKU: TUN6808894
• Manufacturer article number: 6808894
• Model series: ISO-Drehwendeschneidplatten
• Material: Carbide

Numbers / Core technical data

• Geometry angle: 60°
• Clearance angle: 11°
• Plate thickness: 2.38 mm
• Nose radius: 0.4 mm
• Plate size: 09

Special features

• Grade: Cermet / coated cermet NS520
• Chipbreaker: single-sided
• Hole: cylindrical hole + one-sided countersink (40°–60°)
• Plate form: triangular
• Application: turning

FAQ

Is this insert suitable for finishing steel?
Yes. The NS520 cermet grade is specifically optimised for finishing to achieve high surface quality and dimensional accuracy with steel components when used as a final-pass insert.

Which holders are compatible with the insert?
Compatibility depends on form, clearance angle, tolerance class, fastening and size; the triangular ISO form and the cylindrical hole with countersink make the insert compatible with standard ISO triangular turning holders designed for 09-size plates.

Can the insert be used for internal turning?
Yes. The geometry and chip control are suitable for both external and internal turning when combined with a suitably rigid boring bar or holder that matches the ISO seat and clamping method.

What are the benefits of the single-sided chipbreaker?
The single-sided chipbreaker supports predictable chip formation during finishing passes, improving surface integrity and reducing the risk of chip-related interruptions in short to medium-length turning operations.

How does the NS520 grade affect tool life and wear?
NS520 is engineered for uniform wear and improved surface finish rather than maximum metal removal rates; this leads to stable edge condition across finishing cycles and consistent part quality.

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.