CNMG 120412 AH6225 Wendeplatten - Tungaloy

Take advantage of the combination of a PVD-coated carbide grade and a sharp yet stable cutting edge for reliable stainless-steel turning; order directly via Metav Werkzeuge or consult our specialists for tool selection and availability.

CNMG 120412 AH6225 indexable turning insert — ISO 120412 for Drehen by Tungaloy

CNMG120412 AH6225 Tungaloy insert for ISO-standard turning applications, engineered for external and internal turning of stainless steels with a sharp, stable cutting edge and a double-sided chipbreaker.

• PVD-coated carbide grade AH6225
• Optimised for stainless steel turning
• Rhombic shape with 80° approach angle
• Double-sided chipbreaker, with cylindrical hole

High-efficiency turning for stainless steels with controlled tool life

The PVD coating on this carbide grade improves wear resistance and helps maintain a stable cutting edge during mixed and interrupted cuts. Designed specifically for machining rostfreie Stähle in medium cutting conditions, the insert offers a balance between edge sharpness and robustness that reduces chatter and repeat reloads. The result is a more predictable tool life and fewer unscheduled tool changes, which supports higher machine uptime and lower overall production cost.

Secure seating and ISO compatibility to simplify tool set-up

The rhombic form and the ISO 120412 designation ensure compatibility with standard CNMG holders when the form, clearance angle, tolerance class, fixing and plate thickness are matched. The insert’s cylindrical hole and precise tolerance class permit consistent clamping and repeatability in production settings. This standardised fit reduces set-up time and minimises the risk of incorrect mounting, supporting efficient changeovers and stable process control.

Geometry and dimensions that deliver surface quality and productivity

With a nose radius of 1.2 mm and a thickness of 4.76 mm, the insert provides a compromise between strong edge integrity and the ability to produce good surface finishes on contoured workpieces. The 80° approach angle contributes to favourable chip flow and cutting forces for many turning operations. The double-sided chipbreaker further helps to control chips, improving evacuation and reducing re-cutting of swarf, which enhances both component quality and operator convenience.

Material and grade considerations for consistent results

The AH6225 grade is a universal, PVD-coated carbide developed for a wide range of stainless-steel alloys. Its formulation emphasises stable micro-geometry retention under variable conditions, making it suitable for batch production and mixed-series work. Selecting this grade reduces the need for frequent grade changes and simplifies tooling strategies across different stainless-steel types, delivering consistent process reliability and lower inventory complexity.

For tailored advice on integrating this Tungaloy insert into existing toolholders or for availability and lead times, contact Metav Werkzeuge — eMail: info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: 6946867
• SKU: 6946867-Tungaloy
• Manufacturer SKU: TUN6946867
• Model series: ISO turning indexable inserts
• Name: CNMG120412 AH6225 Tungaloy insert

Facts

• Geometry: CNMG 120412 (ISO 120412)
• Approach angle: 80°
• Nose radius: 1.2 mm
• Thickness: 4.76 mm
• Size: 12 mm
• Clearance angle: 0°

Special features

• Material: carbide
• Coating: PVD
• Grade: AH6225 — universal for stainless steels
• Chipbreaker: double-sided
• Plate form: rhombic
• Hole style: cylindrical hole
• Typical application: external and internal turning

FAQ

What steels is this insert best suited for?
The CNMG120412 AH6225 Tungaloy insert is optimised for rostfreie Stähle (stainless steels); the AH6225 grade provides a balance of sharpness and edge stability for medium cutting conditions.

Can this insert be used in any CNMG holder?
The insert follows ISO 120412 dimensions and will fit CNMG-compatible holders provided the holder’s form, clearance angle, tolerance class, fixing method and plate thickness match the insert specifications.

How does the PVD coating benefit performance?
The PVD coating on the AH6225 grade increases wear resistance and helps maintain edge integrity under varying cutting conditions, leading to longer usable life and more consistent component quality.

Is the chip control suitable for automated turning cells?
Yes. The double-sided chipbreaker and the rhombic geometry support reliable chip evacuation, which is advantageous in automated or enclosed machining environments.

What are the key mounting dimensions to check before ordering?
Confirm the insert size (12 mm), thickness (4.76 mm), nose radius (1.2 mm) and hole style (cylindrical) to ensure proper clamping and repeatability.

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.