CNMG 120412 AH6225 Wendeplatten - Tungaloy

Take advantage of the combination of a sharp, stable cutting edge and universal PVD-coated carbide for reliable throughput in rostfreier Stahl turning; order the CNMG120412 AH6225 turning insert directly from Metav Werkzeuge or consult their technical team for tailored advice.

CNMG120412 AH6225 turning insert, PVD-coated carbide — Tungaloy

A CNMG120412 AH6225 ISO-standard rhombic insert engineered for external and internal turning, optimised for rostfreier Stahl and medium-duty, variable machining conditions.

*PVD-coated carbide grade AH6225
*Optimised for rostfreier Stahl
*Rhombic CNMG geometry, 80° included angle
*Double-sided chipbreaker with cylindrical hole

Reliable cutting performance for rostfreier Stahl components

The PVD-coated AH6225 grade delivers a sharp yet durable cutting edge designed specifically for machining rostfreier Stahl in mixed production environments. The coating improves wear resistance and helps maintain cutting geometry under fluctuating cutting forces, which results in more consistent surface finishes and fewer insert changes. The insert’s corner radius 1.2 mm and rhombic CNMG form provide a balance between edge strength and form accuracy, making it suitable for both profile turning and finishing operations with predictable results.

Seamless integration into ISO tool systems for predictable setups

Built to the ISO-DIN geometry, this insert ensures compatibility with a wide range of standard holders when form, free angle, tolerance class, fastening method, size and thickness match. The presence of a cylindrical central hole supports secure clamping and repeatable seating, reducing setup variability. Using ISO-conforming components simplifies tool inventory and shortens setup times, enabling faster changeovers and a more reliable production flow.

Economical operation through wear resistance and indexability

The PVD coating combined with a tough carbide substrate enhances edge life under medium cutting conditions, lowering insert consumption and tool-change frequency. The double-sided design provides multiple indexed edges per insert, improving cost-efficiency per cutting length without sacrificing quality. Measurable features such as the 4.76 mm plate thickness, 12 mm size, and 80° included angle contribute to mechanical stability during cuts, reducing vibration and delivering consistent dimensional accuracy across serial parts.

Practical guidance for grade and chipbreaker selection

Select the double-sided chipbreaker version and the AH6225 grade when machining rostfreier Stahl where stable chip control and a moderate feed range are required. For unstable setups or heavy interrupted cuts, opt for a larger corner radius or a more robust holder to enhance support. The insert’s 0° clearance angle and rhombic form make it versatile for both external turning and internal operations when used with the appropriate boring bar. For process planning and choice of holder, Metav Werkzeuge’s technical team can advise on matching form and tolerance class to the intended application.

Contact Metav Werkzeuge for personalised recommendations on using the CNMG120412 AH6225 insert and to arrange supply; email info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: 6946677
• Manufacturer SKU: TUN6946677
• SKU: 6946677-Tungaloy
• Model series: ISO-Drehwendeschneidplatten
• Designation: CNMG120412 AH6225 Tungaloy insert

Dimensions & angles

• Corner radius: 1.2 mm
• Plate thickness: 4.76 mm
• Plate size: 12 mm
• Included angle: 80°
• Free angle: 0°

Design & features

• Shape: rhombic (CNMG)
• Chipbreaker: double-sided
• Hole: with hole, cylindrical hole
• Material/coating: PVD-coated carbide
• Typical application: turning (external and internal)

FAQ

What materials is this insert suited for?
The CNMG120412 AH6225 insert from Tungaloy is intended primarily for rostfreier Stahl and offers a balance of edge sharpness and stability for medium machining tasks.

How is clamping achieved with this insert?
Clamping is achieved via the central cylindrical hole and the ISO seating geometry; the design supports secure, repeatable mounting in compatible holders.

How many useful cutting edges are available per insert?
The double-sided CNMG geometry allows multiple indexable edges per insert; actual count depends on the chosen indexing strategy and wear criteria for the application.

Is this insert compatible with standard ISO CNMG holders?
Yes. The CNMG120412 AH6225 is ISO-standard and is compatible with holders that match form, size, thickness, free angle and tolerance class.

What are the key dimensional values to check when selecting a holder?
Refer to the 12 mm plate size, 4.76 mm thickness, 1.2 mm corner radius and the 80° included angle to ensure proper fit and seating.

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.