CNMG 120408 AH725 Wendeplatten - Tungaloy

Take advantage of the combination of PVD-coated AH725 grade, ISO-standard CNMG geometry and a robust 0.8 mm corner radius for process-secure turning of steels and stainless steels; order the insert directly via Metav Werkzeuge or consult our specialists for holder compatibility.

CNMG120408 AH725 – Indexable turning insert, PVD-coated carbide, Tungaloy

The CNMG120408 AH725 is an ISO-standard indexable insert engineered for external and internal turning, offering a universal, break-resistant cutting grade for steel and stainless steel applications.

• ISO-standard CNMG geometry
• PVD-coated AH725 carbide grade
• Universal for steel and stainless steel
• 0.8 mm corner radius, double-sided

High productivity through proven cutting-grade technology

The insert combines a PVD-coated surface with the AH725 cutting grade to deliver consistent, crack-resistant performance across varying steels. The coating reduces flank wear and improves edge stability, which results in longer tool life and fewer interruptions on the shop floor. This makes the insert particularly suitable for small tools and applications demanding high process reliability, where predictable tool behaviour reduces setup and downtime.

Secure fitment and straightforward system integration

Compatibility with the clamping system is determined by form, clearance angle, tolerance class, fastening method, size and thickness; the CNMG format with an 80° geometry and a 0° clearance angle is versatile for a wide range of holders. The product forms part of a standard system consisting of the ISO-standard insert, an appropriate external holder or boring bar, a shim/clamp set and spare fixing screws. Checking these parameters before selection ensures a secure fit and repeatable results during turning operations.

Practical benefits for shop-floor machining

With a 0.8 mm corner radius and a double-sided design, the insert provides robust edge support and economical indexing: each side can be rotated to present a fresh cutting edge when wear occurs. The rhombic plate form and cylindrical locating hole support stable clamping and simple replacement during production. The result is stable chip formation, reliable surface finish and reduced frequency of insert changes, which together contribute to more efficient machining cycles.

For reliable, process-secure turning with Tungaloy’s AH725 grade, contact Metav Werkzeuge to discuss holder compatibility or to place an order — our technical advisors will assist with selection and system matching.

Technical data

• Article number: 6861179
• SKU: 6861179-Tungaloy
• Manufacturer SKU: TUN6861179
• Manufacturer article number: 6861179
• Model series: ISO-Drehwendeschneidplatten
• Material: Hartmetall
• Grade: AH725 (PVD-coated)

Facts

• Insert designation: CNMG120408
• Insert size: 12 mm
• Thickness: 4.76 mm
• Corner radius: 0.8 mm
• Approach angle: 80°
• Clearance angle: 0°

Special features

• Rhombic plate form
• Cylindrical hole
• Double-sided chipbreaker
• ISO-standardised format
• Suitable for turning of steel and stainless steel
• System components: insert, appropriate holder or boring bar, shim/clamp set, spare screws

FAQ

What holders are compatible with this insert?
Compatibility is determined by form, clearance angle, tolerance class, fastening method, size and thickness; the CNMG120408 AH725 insert is compatible with holders designed for ISO CNMG inserts and the specified dimensions.

Is this grade suitable for stainless steels?
Yes. The AH725 grade is a universal, crack-resistant cutting grade designed for applications in steel and stainless steel, offering good edge stability across varying materials.

How many usable sides does the insert have?
The insert is double-sided; each side provides a usable cutting edge according to the CNMG geometry and the insert's orientation in the holder.

What advantage does the PVD coating bring?
The PVD coating on the AH725 grade reduces flank wear and supports a stable cutting edge, which helps extend tool life and maintain consistent surface quality during turning.

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.