CNMG 120412 AH725 Wendeplatten - Tungaloy

Take advantage of the combination of a universal AH725 grade, reliable PVD-coated carbide and ISO compatibility for consistent turning results; request stock details or technical advice from Metav Werkzeuge to ensure seamless integration into the production process.

CNMG120412 AH725 — ISO turning insert (CNMG 120412), PVD-coated carbide by Tungaloy

CNMG120412 AH725 is an ISO‑standard rhombic turning insert designed for external and internal turning applications, offering a robust combination of wear resistance and process security.

• ISO rhombic insert CNMG 80° geometry
• PVD-coated AH725 carbide for steel & stainless
• Double-sided chipbreaker with cylindrical hole

Reliable performance for demanding turning operations

The rhombic CNMG geometry with an 80° included angle provides a stable cutting edge for a wide range of turning tasks. The PVD-coated surface enhances wear resistance and reduces built-up edge, which translates into longer tool life and fewer interruptions in the machining cycle. Designed for both roughing and finishing, this indexable insert promotes steady material removal rates and predictable tool behaviour, supporting repeatable process results in small and medium batch production.

Versatile material compatibility and the benefits of AH725

The AH725 grade is a PVD-coated carbide developed for versatile use on steel and stainless steel, particularly where varied workpiece materials and high process reliability are required. The coating reduces friction and improves thermal stability, helping to maintain cutting-edge integrity during interrupted cuts or mixed material lots. For users less familiar with grades and coatings: PVD (physical vapour deposition) produces a thin, adherent film that protects the carbide substrate while preserving sharpness and dimensional accuracy.

Design details that simplify setup and clamping

This insert is double-sided and features a cylindrical hole for secure fastening, allowing economical utilisation of both cutting edges before replacement. With a 4.76 mm thickness and a 1.2 mm corner radius, the component offers a balance between edge strength and surface finish capability; the moderate corner radius helps absorb cutting forces while still enabling fine surface results. The ISO designation ensures compatibility with holders that match the CNMG form, clearance angle, tolerance class, fastening method, size and thickness.

Practical application guidance for reliable processing

For external and internal turning tasks, select a chipbreaker and grade that suit the workpiece material and the rigidity of the setup — the included double-sided chipbreaker aids chip control in both continuous and interrupted cuts. When switching between workpiece alloys, the universal character of AH725 reduces the need for multiple specialised grades, simplifying tool inventory and lowering setup complexity. Use appropriate coolant and adjust speeds and feeds in line with machine rigidity and clamping stability to exploit the full potential of the insert.

For machining operations that require a dependable, universal turning solution with the AH725 grade, contact Metav Werkzeuge for availability and tailored technical advice via info@metav-werkzeuge.com or +49 2822 7131930

Technical Data

• Article number: 6861932
• SKU: 6861932-Tungaloy
• Manufacturer SKU: TUN6861932
• Model series: ISO turning inserts
• Material: carbide
• Insert designation: CNMG120412
• Grade: AH725
• Shape: rhombic

Facts

• Corner radius: 1.2 mm
• Thickness: 4.76 mm
• Size: 12 mm
• Included angle: 80°
• Clearance angle: 0°

Special features

• PVD-coated carbide
• Double-sided chipbreaker
• Cylindrical hole for secure fixing
• ISO standard format for holder compatibility
• Suitable for external and internal turning
• Universal grade for steel and stainless steel

FAQ

What materials is this insert suitable for?
The CNMG120412 AH725 insert is specified for machining steel and stainless steel, the AH725 grade providing a balanced performance across these materials.

How does the PVD coating benefit machining performance?
The PVD-coated layer on the carbide substrate improves wear resistance and thermal stability, which helps to maintain edge geometry and extend the service life of the insert.

Can both cutting edges be used before replacement?
Yes, the insert is double-sided and designed to be indexed, allowing the use of multiple edges to optimise tool utilisation.

Which holders are compatible with this ISO insert?
Compatibility depends on the holder's form, clearance angle, tolerance class, fastening method, size and thickness; ISO CNMG holders matching the CNMG120412 designation are required.

What is the significance of the 1.2 mm corner radius?
A 1.2 mm corner radius offers increased edge strength for more stable cutting while still delivering acceptable surface finish for general turning tasks.

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.