CNMG 120408 AH6225 Wendeplatten - Tungaloy

Take advantage of the combination of a PVD-coated carbide grade (AH6225), a CNMG120408 80° geometry and a double-sided chipbreaker for consistent machining of stainless steels; order the CNMG120408 AH6225 insert directly via Metav Werkzeuge or ask our consultants if needed

CNMG 120408 AH6225 – Indexable Turning Insert by Tungaloy (for Turning)

CNMG120408 AH6225 Tungaloy insert is an ISO‑standard indexable turning insert designed for external and internal turning operations, optimised for machining stainless steels with a sharp yet stable cutting edge

• ISO CNMG120408 rhombic, 80° cutting angle
• PVD-coated carbide AH6225 for stainless steels
• Double-sided chipbreaker with stable edge
• Cylindrical hole for standard ISO holder compatibility

Consistent performance from the AH6225 PVD-coated grade

The AH6225 grade is a PVD‑coated carbide developed for universal use on stainless steels, offering a balance between sharpness and edge stability for medium machining and variable conditions. The PVD coating reduces adhesion and improves thermal resistance, which helps to avoid workhardening and built‑up edge when cutting alloyed and austenitic stainless steels. For practical decision making: the coated substrate supplies longer tool life under interrupted cuts, while the coated surface improves finish quality without sacrificing economy.

Reliable geometry and fit for ISO systems

Built to the ISO designation CNMG120408, the insert uses a rhombic 80° cutting angle and a corner radius of 0.8 mm, providing predictable contact conditions and accessible cutting directions for both external and internal turning. The 0° clearance and a thickness of 4.76 mm ensure secure clamping and repeatable positioning. Compatibility with a holder depends on form, relief angle, tolerance class, fixing method, size and thickness—selecting the matching ISO holder and shim set ensures correct seating and stable tool life.

Improved chip control and process stability

The double‑sided chipbreaker is designed for balanced chip formation during typical turning cycles, reducing the risk of long, stringy chips and improving swarf evacuation. Good chip control minimises interruptions and cleaning, which contributes to higher production uptime. Where material adhesion is an issue, the combination of a thin PVD film and the chipbreaker geometry stabilises the cutting edge, so fewer unscheduled tool changes are required and process repeatability is increased.

Practical system integration and economical use

Integration into the machining system requires a suitable ISO external holder or boring bar, a matching shim or clamp set and replacement screws—this complete setup enables quick index changes and keeps assembly time low. The two usable cutting edges per side help to spread cost over more edges, supporting a favourable cost‑benefit ratio in high‑mix small‑batch production. The indexable insert concept reduces inventory complexity and simplifies reconditioning compared with brazed tooling solutions.

For technical advice or availability on the Tungaloy CNMG120408 AH6225 insert, contact Metav Werkzeuge for product matching and ordering assistance

Technical data

• Article number: 6946661
• SKU: 6946661-Tungaloy
• Manufacturer SKU: TUN6946661
• Model series: ISO‑indexable turning inserts

Facts

• Size: 12 mm
• Thickness: 4.76 mm
• Corner radius: 0.8 mm
• Cutting angle: 80°
• Clearance angle: 0°

Special features

• Material: carbide
• Coating: PVD
• Grade: AH6225
• Shape: rhombic (CNMG)
• Hole: with cylindrical hole
• Chipbreaker: double‑sided
• Application: turning (external and internal)
• System: ISO indexable insert compatible

FAQ

How compatible is this insert with standard ISO holders?
The CNMG120408 AH6225 insert is manufactured to ISO dimensions and fits standard CNMG holders when the holder matches form, relief angle, tolerance class, fixing style, size and thickness; confirm the clamping interface before use.

Which materials is the AH6225 grade intended for?
AH6225 is a universal PVD‑coated carbide grade optimised for stainless steels and provides a compromise between a sharp cutting edge and edge stability for medium cutting conditions.

Can both sides of the insert be used?
Yes, the insert is double‑sided with a chipbreaker on each side, allowing index changes to extend usable life and reduce tooling costs.

What benefits does the PVD coating provide during turning?
The PVD coating on this carbide insert improves thermal resistance and reduces adhesion, resulting in fewer occurrences of built‑up edge and a more consistent surface finish when machining stainless steels.

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.