CNMG 120404 AH6225 Wendeplatten - Tungaloy

Take advantage of the combination of durable PVD coating, precise 80° rhombic geometry, and easy indexability for productive turning of stainless steel; order directly via Metav Werkzeuge or consult our advisors for application support.

CNMG120404 AH6225 Tungaloy turning insert — 80° rhombic, 0.4 mm radius

CNMG120404 AH6225 Tungaloy turning insert for general turning applications, designed as an ISO‑standard indexable insert for external and internal turning where a sharp yet stable cutting edge is required.

• ISO rhombic insert, 80° geometry
• PVD‑coated carbide AH6225
• 0.4 mm corner radius
• Double‑sided chipbreaker, cylindrical hole

Proven cutting performance for stainless steel and mixed production

The PVD‑coated grade AH6225 is engineered as a universal solution for machining stainless steel, delivering a balance between a sharp cutting edge and robust edge stability under variable cutting conditions. The applied coating increases wear resistance and adhesion control, which helps to extend tool life during medium cutting depths. For production environments requiring consistent cycle times, this indexable insert supports repeatable performance and predictable tool change intervals, contributing to improved throughput and reduced tooling costs.

Geometry and indexability that improve productivity

The rhombic form with an 80° geometry and a 0.4 mm corner radius provides a versatile compromise between strength and form accuracy. The double‑sided layout and the cylindrical hole enable two effective cutting edges per insert, reducing tooling expenditure per part. The insert thickness of 4.76 mm and an IC size of 12 mm offer mechanical stability in common external holders and boring bars, while the 0° relief angle supports neutral cutting action for a wide range of turning operations. These features together increase uptime and simplify inventory management.

Stable chips and surface quality through matched chipbreakers and grade

A properly matched chipbreaker and the AH6225 grade produce controlled chip formation and consistent surface finish. Choosing the correct chipbreaker style and adapting cutting data to the component material and setup stiffness directly influences process reliability. The combination of the PVD layer and the substrate hardness reduces built‑up edge tendencies on stainless workpieces, helping to achieve reproducible part quality with fewer rework steps. The ISO conformity of the insert ensures predictable interchangeability with compatible holders when form, relief angle, tolerance class, fastening, size and thickness are observed.

Practical system guidance and compatibility notes

This insert is part of a cutting system comprising the ISO indexable plate, a matching external holder or boring bar, plus an underlay/clamping set and replacement screws where required. Compatibility depends on matching the plate shape and the mechanical parameters noted above; verify holder seat and screw type before assembly. The insert is optimised for turning operations and is suitable for both external and internal applications when installed in an appropriate clamping system. For customers new to indexable tooling, the technical advisors at Metav Werkzeuge can recommend holders, insert rotations and starting cutting data to suit machine rigidity and part geometry.

Contact Metav Werkzeuge for application advice on Tungaloy CNMG120404 AH6225 inserts and to discuss availability; email info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: 6946674

• SKU: 6946674-Tungaloy

• Manufacturer SKU: TUN6946674

• Designation: CNMG120404

• Grade: AH6225

• Material: Carbide

• Coating: PVD

• Manufacturer: Tungaloy

Facts

• Corner radius: 0.4 mm

• Thickness: 4.76 mm

• Size (IC): 12 mm

• Geometry angle: 80°

• Relief angle: 0°

Special features

• ISO turning insert, rhombic form

• Double‑sided chipbreaker

• Cylindrical hole for fixation

• Universal grade for stainless steel

• Suitable for external and internal turning

FAQ

What workpiece materials suit this insert best? The AH6225 grade is a universal PVD‑coated carbide designed primarily for stainless steel and comparable stainless alloys; it also performs well in mixed production where a balance of edge sharpness and stability is required.

How does the insert index and how many cutting edges are available? The rhombic CNMG form is double‑sided and offers two usable edges per side; orientation and indexing follow the ISO standard, enabling economical edge rotation.

Which holders are compatible with this insert? Compatibility requires matching the insert form, relief angle, tolerance class, fastening method, size and thickness to the holder seat; use standard ISO external holders or boring bars compatible with CNMG120404 geometry.

Can this insert improve surface finish on stainless steel? Yes, the combination of the AH6225 grade and a suitable chipbreaker promotes stable chip formation and reduced built‑up edge, which together support improved and repeatable surface finish.

Is the coating beneficial for higher cutting speeds? The PVD coating increases wear resistance and can enable higher cutting speeds within the machine and process limits; adjust feeds and speeds according to machine rigidity and component thermal sensitivity.

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.