CNMG 120412 AH6225 Wendeplatten - Tungaloy

Benefit from the combination of a PVD‑coated cemented carbide grade and a rhombic CNMG geometry for reliable, versatile turning performance; order the insert directly via Metav Werkzeuge or consult our advisers for optimal selection and integration.

CNMG 120412 AH6225 Tungaloy — Turning indexable insert, PVD‑coated carbide, 80°

CNMG 120412 AH6225 Tungaloy is an ISO‑format turning indexable insert designed for external and internal turning, optimised for stainless steel machining with a sharp yet stable cutting edge.

• PVD-coated cemented carbide grade AH6225
• Rhombic CNMG 80° geometry
• 1.2 mm corner radius for precise finishing
• Double-sided chipbreaker with cylindrical hole

Reliable, economical cutting for stainless steels

The AH6225 grade is a PVD‑coated cemented carbide developed as a universal solution for stainless steel machining. Its composition and coating balance a sharp cutting edge with wear resistance, enabling stable performance under varying cutting conditions. This results in consistent surface quality and fewer index changes, which supports smoother production cycles and predictable tool life. For mid‑range feeds and interrupted cuts, the grade minimises edge chipping while preserving cutting efficiency.

Secure clamping and accurate geometry for repeatable results

The insert’s CNMG geometry with an 80° included angle and cylindrical hole ensures reliable seating in compatible external holders or boring bars. Because compatibility depends on form, clearance angle, tolerance class, fixation and thickness, the insert fits standard ISO tool systems when matched correctly. The 1.2 mm corner radius is suited for finishing and light roughing, providing a balance between strength and surface definition while supporting repeatable indexing and accurate positioning in tool assemblies.

Improved chip control and reduced downtime

A double‑sided chipbreaker helps control swarf formation and evacuation, which contributes to predictable chip shapes and safer machining. This chip control, combined with the stable cutting edge of the grade, reduces interruptions for chip management and regrinding. The result is increased process reliability and lower auxiliary costs, supporting higher throughput without compromising component quality or operator safety.

System integration and selection guidance

An insert operates as part of a system: ISO insert, matching external holder or boring bar, locating shim or clamping kit and replacement screws. Select the chipbreaker and grade based on workpiece material, cutting direction and machine stability. If the exact holder compatibility is unclear, consult the technical documentation for holder form, clearance angle and tolerance class to ensure correct fitment. For complex setups or unusual materials, further advice can be provided to match cutting parameters and extend productive tool life.

Contact Metav Werkzeuge for tailored recommendations on the CNMG 120412 AH6225 insert and system components; our consultants are available to assist with selection and integration — eMail: info@metav-werkzeuge.com · Phone: +49 2822 7131930

Technical data

• Article number: 6824944
• SKU: 6824944-Tungaloy
• Manufacturer SKU: TUN6824944
• Manufacturer: Tungaloy

Core dimensions

• ISO designation: CNMG120412
• Included angle: 80°
• Corner radius: 1.2 mm
• Plate thickness: 4.76 mm
• Plate size: 12 mm

Design & features

• Plate shape: rhombic
• Hole: with cylindrical hole
• Chipbreaker: double-sided
• Coating / grade: PVD-coated cemented carbide AH6225
• Application: Turning
• Model series: ISO turning indexable inserts

FAQ

What materials is this insert suited for?
The CNMG 120412 AH6225 insert is formulated as a universal grade for stainless steel machining and performs well in a range of alloyed and austenitic steels.

How does the AH6225 grade affect tool life?
The AH6225 PVD coating and cemented carbide substrate provide a balance of sharpness and wear resistance, supporting stable edge life under medium cutting conditions and variable machining environments.

Which holders are compatible with this CNMG insert?
Compatibility depends on the holder’s form, clearance angle, tolerance class, fixation method, size and thickness; the insert fits ISO‑compliant external holders or boring bars when these parameters match the CNMG120412 specification.

Can the insert be used for internal turning?
Yes, the geometry and chip control of this CNMG insert make it suitable for both external and internal turning operations when installed in an appropriate boring bar or internal holder.

Is the insert reversible or indexed?
The insert is double‑sided with a chipbreaker on both faces, allowing indexing to a fresh edge and supporting repeated use until both edges are consumed.

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.