SNGG 120408 NS520 Wendeplatten - Tungaloy

Combine cermet finishing with ISO compatibility and a compact square geometry for stable, high-quality turning results; benefit from the NS520 grade's consistent wear and surface integrity and order the insert directly via Metav Werkzeuge or consult our specialists for application advice.

SNGG 120408 NS520 Turning insert – square ISO cermet insert for turning, 0° relief – Tungaloy

The SNGG120408-01 NS520 is an ISO-indexed square turning insert designed for finishing to light machining of steel, offering a small corner radius and a cermet cutting grade for superior surface quality.

• ISO square insert 12 mm size
• Cermet grade NS520 for finishing
• 0° relief for stable cutting engagement
• 0.8 mm corner radius for fine surface finish

Delivering repeatable surface quality and dimensional control

The NS520 cermet grade is engineered for finishing and light turning operations on steel, prioritising surface finish and dimensional accuracy. A cermet edge provides low built-up edge tendency and predictable wear, which maintains part tolerances over longer production runs. The combination of the small 0.8 mm corner radius and the low-relief geometry supports fine finishing passes that reduce secondary operations and rework. Selecting a cermet insert reduces variability in batch production and helps achieve consistent part presentation straight from the lathe.

Designed for straightforward integration into ISO tool systems

As an ISO indexable insert, the component integrates with standard square holders provided the form, relief angle, tolerance class, clamping style, size and thickness match. The insert’s square form and central cylindrical hole permit secure clamping and enable up to four usable cutting edges per index, which supports efficient tool rotation and stock management. Clear identification of the insert geometry simplifies tool changeover and lowers machine downtime in production environments, delivering measurable improvements in throughput and process stability.

Process guidance for turning steel with the NS520 grade

For finishing passes on steel, prefer moderate cutting speeds and light feeds to exploit the NS520 grade’s strength: excellent surface quality and even flank wear. The small corner radius is suited to fine profiles and tight tolerances; avoid aggressive depths of cut that would demand a more robust grade. The supplied chipbreaker 01 is matched to the intended light machining tasks—choose an alternative breaker if cutting conditions or material grades produce problematic chip forms. Stable workholding and correct tool overhang complement the insert’s properties and are decisive for repeatable, high-quality results.

Contact Metav Werkzeuge for tailored recommendations on using the Tungaloy NS520 inserts in specific turning setups, or request application support via info@metav-werkzeuge.com / +49 2822 7131930

Technical data

• Article number: 6806522
• SKU: 6806522-Tungaloy
• Manufacturer SKU: TUN6806522
• ISO designation: SNGG120408-01

Dimensions & geometry

• Size: 12 mm
• Thickness: 4.76 mm
• Corner radius: 0.8 mm
• Relief angle: 0°
• Shape: square
• Hole: with cylindrical hole
• Chipbreaker: 01

Materials & features

• Cutting grade: NS520 (cermet / coated cermet)
• Substrate material: carbide
• Intended use: turning
• Series: ISO turning indexable inserts

FAQ

What materials is this insert intended for?
The NS520 grade is optimised for finishing to light machining of steel; the SNGG120408-01 is best applied where surface quality and dimensional control are priorities.

How many cutting edges are available per insert?
The square form of the SNGG120408-01 provides up to four indexable edges before replacement is required.

Will this insert fit my existing ISO holder?
Compatibility depends on form, relief angle, tolerance class, clamping method, size and thickness; the insert follows ISO indexing standards for straightforward matching.

Is this insert suitable for roughing operations?
The NS520 cermet is formulated for finishing and light cuts; heavy roughing typically requires a tougher grade and a different chipbreaker geometry.

What advantages does the NS520 cermet provide?
NS520 offers improved surface finish, stable and even wear progression, and reliable dimensional results in finishing applications with 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.