CNGG 120404 NS520 Wendeplatten - Tungaloy

Take advantage of the NS520 cermet grade together with an 80° rhombic geometry and a 0.4 mm corner radius to achieve consistent surface finish and stable dimensional control in finish to light turning operations; order the insert directly via Metav Werkzeuge or request application advice from the consultants.

CNGG 120404 NS520 — ISO turning insert for Turning by Tungaloy

The CNGG120404 NS520 is an ISO-standard rhombic turning insert designed for finish to light turning of steel, optimised for surface quality and even wear.

• ISO rhombic 80° geometry
• NS520 cermet for fine finishing
• 0.4 mm corner radius
• Cylindrical-hole, holder compatible

Deliver consistent surface quality with a cermet grade built for finishing

The combination of the NS520 grade and a cermet substrate provides a cutting edge tailored to finish and light turning of steel, prioritising surface quality and dimensional accuracy. The cermet composition reduces built-up edge formation and promotes even wear, which helps maintain part tolerances over longer tool life. For applications where surface finish is critical, the insert’s geometry and grade contribute to reliable outcomes with reduced need for secondary finishing.

Integrates smoothly into ISO turning systems for quick setup

Specified as part of the ISO turning insert family, compatibility with toolholders is determined by form, clearance angle, tolerance class, fastening method, size and thickness. The rhombic shape with an 80° included angle and a cylindrical hole supports secure clamping in standard external holders and boring bars, while the 4.76 mm plate thickness provides robust seat support during cutting. Selecting a suitable holder and correct clamping torque ensures repeatable positioning and reduces vibration during operation.

Improves process stability and productivity in light turning tasks

For finish-oriented turning the insert’s properties reduce the need for conservative feeds and excessive rework. The NS520 cermet grade delivers a balance between edge strength and fine-grain wear characteristics, which can translate into more consistent cycle times and stable surface roughness. The double-sided chipbreaker design allows economical indexing when minor flank wear occurs, extending usable life while maintaining predictable performance across batches.

Practical handling guidance and recommended applications

With a 0.4 mm corner radius, 12 mm size and a 4.76 mm thickness, this insert is well suited to external and internal finishing passes where dimensional control matters. The rhombic geometry and double-sided chipbreaker are appropriate for steel turning operations that demand good surface integrity. When choosing a chipbreaker and grade, match the NS520 characteristics to workpiece alloy, feed and depth of cut to obtain the best compromise between tool life and surface finish; request detailed cutting data if needed for specific steels.

Contact Metav Werkzeuge for delivery and application advice on the Tungaloy NS520 CNGG120404 turning insert — email info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: 6801856
• Manufacturer SKU: TUN6801856
• SKU: 6801856-Tungaloy
• Model series: ISO-Drehwendeschneidplatten
• ISO designation: CNGG120404

Facts

• Size: 12 mm
• Thickness: 4.76 mm
• Corner radius: 0.4 mm
• Included angle: 80°
• Clearance angle: 0°

Special features

• Rhombic insert form
• Cylindrical hole for clamping
• Double-sided chipbreaker
• Grade: NS520 (cermet / coated cermet)
• Material: carbide
• Application: Turning
• Compatible with ISO holders by form, clearance, tolerance, fastening, size and thickness

FAQ

What materials is this insert suitable for? The CNGG120404 NS520 Tungaloy turning insert is intended primarily for steel finishing operations; the NS520 cermet grade focuses on surface quality and even wear in steel turning.

How does the NS520 grade affect finishing performance? NS520 provides a fine-grain cermet characteristic that reduces built-up edge and promotes consistent wear, helping the CNGG120404 NS520 insert to deliver improved surface finish and dimensional control.

Which holder types are compatible with this insert? Compatibility depends on holder form, clearance angle and clamping arrangement; the CNGG120404 NS520 insert uses a cylindrical hole and rhombic form to fit standard ISO external holders and appropriate boring bars.

Is the insert reversible or indexable? The insert features a double-sided chipbreaker design, enabling economical indexing to extend usable life while maintaining cutting performance for finishing tasks.

What are the key geometry values to check when selecting this insert? Key values include the 80° included angle, 0.4 mm corner radius, 12 mm size and 4.76 mm thickness; verify these against the holder and the intended turning operation.

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.