CNGG 120408 NS520 Wendeplatten - Tungaloy

The Cermet NS520 grade and the rhombic ISO form deliver a consistent surface finish and reliable dimensional control, while the double-sided geometry and cylindrical hole provide economical indexability and secure clamping; order the insert directly via Metav Werkzeuge or consult our specialists for application advice.

CNGG 120408 NS520 — ISO indexable turning insert by Tungaloy, rhombic 80° form, 0.8 mm corner radius

A CNGG120408 NS520 indexable insert engineered for finishing to light turning of steel, offering a coated cermet cutting grade optimised for surface quality and uniform wear

• Cermet grade NS520 for superior surface finish
• Double-sided insert for economical indexability
• Rhombic form CNGG with 80° cutting angle
• 0.8 mm corner radius with cylindrical hole interface

Consistent surface quality from a specialised cermet grade

The first benefit of this insert is its focus on finish and repeatability: the NS520 cermet composition combines high hardness with a metal binder to produce a fine surface and steady wear behaviour. For finishing and light turning of steel, this material class reduces built-up edge and supports dimensional accuracy across longer tool life. The result is fewer reworks and more predictable component tolerances, particularly where surface integrity and tight limits matter.

Secure clamping and efficient indexability for production

Designed as an ISO-standard indexable insert, the plate features a cylindrical hole and a double-sided chipbreaker arrangement that enable two usable cutting edges per insert and dependable seating in compatible holders. Compatibility with the clamping system is determined by the insert’s shape, clearance angle (0°), tolerance class, fastening method, size (12 mm) and thickness (4.76 mm). The rhombic form with an 80° included angle gives a balanced compromise between strength and accessibility for external and internal turning setups.

Application fit and process guidance for steel machining

This grade is intended for finishing to light turning of steel, prioritising surface finish and consistent wear rather than heavy material removal. Operators should match the chipbreaker and grade to the machining stability and the component’s surface requirements. Selecting the appropriate feed and cutting speed will preserve the cermet’s advantages: improved surface integrity and predictable tool consumption. Where higher removal rates are required, consider alternative geometries or grades better suited to roughing.

For reliable finishing performance choose the Tungaloy CNGG120408 NS520 indexable insert — contact Metav Werkzeuge for tailored recommendations or order directly; email info@metav-werkzeuge.com or call +49 2822 7131930 to discuss application details

Technical Data

• Article number: 6801870
• SKU (manufacturer): TUN6801870
• Our SKU: 6801870-Tungaloy
• Designation: CNGG120408 NS520 Tungaloy indexable insert
• Material: carbide (cermet/coated cermet option)

Core Data

• ISO series: ISO indexable turning inserts
• Size: 12 mm
• Thickness: 4.76 mm
• Corner radius: 0.8 mm
• Clearance angle: 0°
• Included angle / form: rhombic, 80°
• Hole: with cylindrical hole
• Chipbreaker: double-sided

Special features

• Cermet grade NS520 optimised for finish and uniform wear
• Double-sided geometry for two indexable edges
• ISO-compatible: form, clearance, tolerance and thickness determine holder fit
• Typical use: finishing to light turning of steel
• System comprises insert, matching external holder or boring bar, backing/clamping kit and replacement screws (holder and accessories not included)

FAQ

What materials is this insert best suited for?
The insert is formulated as a cermet NS520 grade and is best suited for finishing to light turning of steel, offering improved surface quality and consistent wear for steel applications.

How many cutting edges are available per insert?
The double-sided geometry provides two usable cutting edges per indexable insert, allowing economical reindexing before replacement.

Which holder types are compatible with this plate?
Compatibility is determined by ISO form, clearance angle (0°), tolerance class, fastening and thickness; the plate seats in holders designed for rhombic CNGG 120408 inserts with a cylindrical hole.

Does the insert require a specific chipbreaker selection?
Yes, chipbreaker choice should match workpiece material, machining type and machine stability; the supplied double-sided breaker suits finishing and light turning tasks.

What is the significance of the NS520 designation?
NS520 denotes a cermet cutting grade optimised for surface finish, dimensional control and even wear behaviour during finishing operations in steel.

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.