CNMG 120412 AH6225 Wendeplatten - Tungaloy

Take advantage of a robust combination of precision geometry and a wear‑resistant PVD coating to maintain stable cutting performance in stainless steel turning; order the CNMG120412 AH6225 insert directly via Metav Werkzeuge or consult the technical team for grade selection and holder compatibility.

CNMG 120412 AH6225 — ISO turning insert for stainless steel, 80° CNMG form, Tungaloy

The CNMG120412 AH6225 is a rhombic ISO indexable insert designed for external and internal turning of stainless steels, offering a balanced edge geometry for medium machining under variable conditions.

• Universal grade AH6225 for stainless steels
• PVD‑coated carbide for improved wear resistance
• ISO‑norm CNMG 80° rhombic insert
• Double‑sided chipbreaker with cylindrical hole

Consistent cutting performance for stainless steel turning

The rhombic CNMG form with an 80° approach angle and a 1.2 mm corner radius delivers a blend of rigidity and edge sharpness that supports stable cuts in rostfreiem Stahl (stainless steels). The AH6225 grade is a PVD‑coated carbide designed to keep a sharp, damage‑resistant cutting edge during medium turning operations. The PVD layer reduces flank wear and improves adhesion resistance, which in practical terms means longer intervals between indexings and fewer unplanned tool changes—supporting higher productivity and predictable cycle times.

Fast, reliable set‑up and holder compatibility

As an ISO‑standard insert the CNMG120412 requires a matching CNMG holder; compatibility depends on form, clearance angle, tolerance class, fastening method, size and thickness. The insert’s cylindrical hole and double‑sided design permit simple clamping and economical use of both cutting edges. Explaining the geometry: the double‑sided chipbreaker gives a controlled chip form for common stainless turning feeds, while the 0° clearance angle specification minimises the need for unusual holder offsets. This results in efficient set‑up and stable machining across typical production environments.

Process security and cost efficiency in production

Choosing a PVD‑coated AH6225 insert reduces heat‑related edge softening and improves resistance to built‑up edge, common when machining rostfreier Stähle. The grade’s balanced toughness and wear resistance lead to reliable tool life and consistent surface finish, which lowers scrap rates and rework. For operations aiming to balance tool cost and part quality, this insert supports repeatable results and contributes to steady throughput—an economically sensible choice for job shops and production lines alike.

Practical notes on application and handling

The indexable insert is intended for turning applications; selection of the chipbreaker and grade should match the workpiece alloy, machining method and assembly rigidity. A moderate cutting speed and adequate coolant management help exploit the PVD coating’s advantages. When fitting the insert, ensure the holder matches the CNMG contour and that the clamping torque and seating surfaces are clean to maintain the ISO‑defined tolerance for repeatable positioning.

For recommendations on insert grades, holder selection or to request application data for Tungaloy inserts, contact Metav Werkzeuge — technical consultation and supply are available through Metav Werkzeuge.

Technical Data

• Article number: 6946773
• Manufacturer item number: 6946773
• Manufacturer SKU: TUN6946773
• SKU: 6946773‑Tungaloy
• Model series: ISO‑Drehwendeschneidplatten
• Application: Turning

Core specifications

• Corner radius: 1.2 mm
• Thickness: 4.76 mm
• Size: 12 mm
• Clearance angle: 0°
• Approach angle: 80°
• Hole: with hole
• Hole style: cylindrical hole

Materials & special features

• Grade: AH6225, PVD‑coated carbide
• Suitable for: stainless steels
• Chipbreaker: double‑sided
• Plate form: rhombic
• Mounting: ISO insert; compatibility depends on holder form, clearance angle, tolerance class, fastening, size and thickness

FAQ

Is this insert suitable for turning stainless steels?
The CNMG120412 AH6225 insert by Tungaloy is specifically formulated for rostfreie Stähle (stainless steels) and is suitable for medium turning tasks where a sharp, stable cutting edge is required.

Can both sides of the insert be used?
Yes, the CNMG120412 AH6225 is double‑sided with a cylindrical hole, allowing both cutting edges to be indexed for economical tool usage.

What benefits does the PVD coating provide?
The PVD‑coated AH6225 grade reduces wear and improves resistance to built‑up edge during turning, extending the effective life of the carbide body under variable cutting conditions.

Which holder type is required for this ISO insert?
A CNMG‑compatible external or internal turning holder is required; compatibility is determined by the holder’s form, clearance angle, tolerance class, fastening and size to match the insert’s dimensions.

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.