CNMG 120408 AH6225 Wendeplatten - Tungaloy

Combining the PVD-coated AH6225 carbide grade with an 80° rhombic geometry and a 0.8 mm corner radius, this insert offers a balanced combination of edge sharpness and stability for medium turning tasks on stainless steels; order the part directly via Metav Werkzeuge or consult their specialists for holder compatibility and delivery options.

CNMG120408 AH6225 indexable turning insert for turning — Tungaloy

The CNMG120408 AH6225 is an ISO-format rhombic insert engineered for external and internal turning operations, optimised for reliable performance on stainless steels and varying workpiece conditions.

• PVD-coated carbide for stainless steels
• 80° rhombic geometry for versatile turning
• Double-sided insert with cylindrical hole
• 0.8 mm corner radius for fine finishing

Stable cutting edge for consistent medium-duty turning

The PVD-coated AH6225 carbide composition provides a sharp yet robust cutting edge, designed to cope with the tendency of stainless steels to work-harden. The coating improves wear resistance and reduces built-up edge formation, so tool life is extended under fluctuating cutting conditions. As an ISO-format rhombic insert, the component benefits from a widely supported geometry that is compatible with many clamping systems; compatibility is determined by geometry, relief angle, tolerance class, fastening method, size and thickness. This results in reproducible machining quality and fewer unplanned tool changes during production runs.

System compatibility and secure clamping for reliable setup

Supplied as an ISO-standard insert with a cylindrical hole, the part is intended for use with a matching external holder or boring bar plus support shim and replacement screws. Fixing is achieved through the central hole and the appropriate clamping assembly, ensuring positional repeatability and stable cutting conditions. The insert is double-sided, enabling economical indexation and reduced tooling costs per cutting edge. The ISO designation eases selection within existing tool systems and allows the insert to be integrated into established setups with predictable clearance and tolerance behaviour.

Practical machining advantages and application guidance

The 80° angle and 0.8 mm corner radius produce a geometry that balances strength and surface finish—suitable for general turning tasks where a fine surface is required without sacrificing edge life. The double-sided chipbreaker supports consistent chip formation across variable depths of cut; for heavily interrupted cuts or poor rigidity, a more robust chipbreaker and larger radius may be chosen. Feed, speed and coolant strategy should be adjusted to material condition and machine stability; if machining parameters or holder compatibility are uncertain, technical advice is available to select the optimal chipformer and cutting data for a smooth process.

For specific advice on integrating this Tungaloy insert into existing turning systems or to check stock and delivery, contact Metav Werkzeuge for a tailored recommendation and technical consultation.

Technical Data

• Article number: 6796304
• SKU: 6796304-Tungaloy
• Manufacturer SKU: TUN6796304
• Manufacturer: Tungaloy
• Model series: ISO turning indexable inserts
• Designation: CNMG120408

Facts

• Insert size: 12 mm
• Thickness: 4.76 mm
• Corner radius: 0.8 mm
• Relief angle: 0°
• Principal angle: 80°
• Mounting hole: with hole (cylindrical)

Special features

• Material: carbide
• Coating / grade: AH6225, PVD-coated
• Shape: rhombic
• Chipbreaker: double-sided
• Typical application: turning (external and internal)
• Compatibility: ISO-format — holder fit depends on form, clearance, tolerance, fastening, size and thickness

FAQ

Which materials is this insert best suited for?
The CNMG120408 AH6225 insert is optimised for machining stainless steels; the AH6225 PVD-coated carbide grade provides a balance of edge sharpness and wear resistance for medium cutting tasks.

Is this insert indexable on both sides?
Yes, the component is double-sided, permitting indexation to the second cutting edge and improving cost-efficiency per edge.

How is the insert fixed in the holder?
Fixing is realised via the cylindrical hole and an appropriate clamping assembly; correct seating depends on the holder form, tolerance class and fastening method.

What does the AH6225 designation indicate?
AH6225 denotes a PVD-coated carbide grade tuned for process stability and controlled chip formation when turning stainless steels under varying conditions.

Can this insert be used for internal turning as well as external?
Yes, the ISO-format rhombic geometry and 80° principal angle make the insert suitable for both external and internal turning, provided the holder and tool overhang allow adequate rigidity.

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.