SNMA 120408 NS520 Wendeplatten - Tungaloy

Take advantage of the combination of ISO conformity, a wear‑resistant cermet grade and a compact square format to ensure consistent finishing results and predictable tool life; order directly via Metav Werkzeuge or request advice from the consultants for optimal holder selection.

SNMA120408 NS520 indexable turning insert (square, 12 mm) – Tungaloy

A SNMA120408 NS520 indexable insert engineered for fine to light turning operations on steel, optimised for surface quality and dimensional stability

• ISO‑standard SNMA insert format
• Cermet grade NS520 for fine finishing
• 12 mm square with 0.8 mm corner radius
• Cylindrical hole and 0° relief angle

Consistent finishing and predictable wear for high-quality parts

The SNMA120408 NS520 insert delivers a controlled cutting performance geared towards finishing and light machining of steel. The NS520 cermet composition combines high hardness with a stable wear pattern, which supports an improved surface finish and long‑term dimensional accuracy. Due to the material properties of the cermet and the square geometry, the cutting edge maintains form under steady cutting conditions, resulting in fewer interruptions for insert changes and a more predictable process flow. This benefit is particularly relevant where repeatable part quality and minimised rework are required.

Clear compatibility and secure mounting for process reliability

Designed to the ISO SNMA format, compatibility with holders is governed by shape, relief angle, tolerance class, fastening and thickness. The insert features a cylindrical hole for secure clamping and a 0° relief angle that suits conventional external and internal turning arrangements. Specifying the correct holder geometry and clamping set ensures proper seat contact and repeatable indexability, reducing the risk of movement or chipping during operation. The standardised format simplifies tool inventory management and reduces setup time across multiple machines.

Material selection and application advantages for steel finishing

The insert is supplied in a cermet or coated cermet variant under the NS520 grade, paired with a cemented carbide substrate that promotes stable cutting at finishing feeds. The square 12 mm form with a corner radius of 0.8 mm is tailored to produce refined edge transitions while maintaining sufficient edge strength for light interrupted cuts. The result is a balance between excellent surface quality and predictable wear behaviour, making this grade suitable for components where surface integrity and dimensional tolerance are priorities.

For dependable finishing performance with Tungaloy’s NS520 cermet inserts, contact Metav Werkzeuge for tailored holder recommendations and availability at info@metav-werkzeuge.com or +49 2822 7131930

Technical data

• Article number: 6806621
• Manufacturer SKU: TUN6806621
• Brand: Tungaloy
• Model series: ISO‑Drehwendeschneidplatten

Core data

• Insert designation: SNMA120408
• Size: 12 mm
• Plate thickness: 4.76 mm
• Corner radius: 0.8 mm
• Relief angle: 0°
• Included angle: 90°

Special features

• Grade: NS520 (cermet / coated cermet)
• Material: cemented carbide substrate
• Shape: square
• Hole: with cylindrical hole
• Chipbreaker: without
• Typical application: external and internal turning; finishing to light machining of steel
• Compatibility determined by holder form, relief angle, tolerance class, fastening, size and thickness

FAQ

What types of operations is this insert suited for? This indexable turning insert is designed primarily for finishing and light machining operations on steel; the NS520 grade emphasises surface quality and dimensional control.

How is the insert secured in the holder? The SNMA120408 features a cylindrical hole and matches ISO SNMA clamping systems; proper holder geometry and clamping ensure repeatable seat contact and secure fixation.

Can this grade be used for interrupted cuts? The cermet composition and the 0.8 mm corner radius provide reasonable edge strength for light interruptions, but the grade is optimised for continuous finishing passes.

How does the NS520 grade affect surface finish? NS520’s cermet properties promote low and even wear, which helps maintain a consistent cutting edge and thus improved and repeatable surface quality across multiple parts.

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.