CNMG 120412 AH6225 Wendeplatten - Tungaloy

Take advantage of the PVD-coated carbide grade AH6225 and the CNMG rhombic geometry to ensure consistent cutting performance on stainless steels; order the item through Metav Werkzeuge or consult the team for application advice.

CNMG120412 AH6225 ISO turning insert for turning applications — Tungaloy

The CNMG120412 AH6225 is an ISO-standard, rhombic indexable insert designed for external and internal turning, optimised for machining rostfreier Stahl with a sharp yet resilient cutting edge.

• ISO CNMG rhombic form, 80° included angle
• PVD-coated carbide grade AH6225
• Double-sided chipbreaker, with cylindrical hole
• 1.2 mm corner radius for robust edge integrity

Consistent performance where material varies

The CNMG-style indexable insert offers a balance of edge sharpness and durability thanks to the PVD-coated carbide AH6225 grade. When machining rostfreier Stahl, the coating reduces built-up edge and improves wear resistance under changing cutting conditions. The 80° geometry of the rhombic shape supports stable cutting forces and smooth chip flow; this helps maintain surface finish while allowing for moderate feed and depth of cut choices. In practice, the combination of substrate and coating reduces the need for frequent index changes, improving uptime.

Precision features that simplify setup and clamping

A 1.2 mm corner radius provides a predictable cutting edge for turning operations and supports dimensional stability at the workpiece surface. The insert is produced to ISO tolerances, so compatibility with standard CNMG holders depends on form, clearance angle, thickness and fastening method; the cylindrical locating hole ensures secure seating with a suitable clamping kit. For workshops preferring repeatable setups, these characteristics translate into faster tool changes and lower setup variability.

Chip control and application suitability

Equipped with a double-sided chipbreaker, the insert accommodates both finishing and medium-turning passes while controlling chip shape for reliable evacuation. The double-sided design also doubles indexable life per insert, improving cost-efficiency across production runs. The grade is specified as universal for rostfreie Stähle and performs well under interrupted cuts or when component geometry causes variable engagement, allowing productive turning with fewer insert changes.

Practical benefits for production planning

Using ISO-standard inserts like this one eases inventory management and toolholder selection: the CNMG120412 form is widely supported, the 4.76 mm plate thickness provides rigidity in the pocket, and the PVD coating delivers extended edge life in mixed-series production. For procurement and process engineering, these features mean predictable tool-life calculations and simpler qualification across batches, which supports efficient scheduling and stable process output.

For reliable rostfrei machining with proven cutting-edge technology, contact Metav Werkzeuge to discuss availability and application recommendations for the Tungaloy CNMG120412 AH6225 insert — email info@metav-werkzeuge.com or call +49 2822 7131930.

Technical data

• Article number: 6796274
• SKU: 6796274-Tungaloy
• Manufacturer SKU: TUN6796274
• Model series: ISO-Drehwendeschneidplatten
• Material: Hartmetall
• Grade/coating: AH6225 (PVD)

Facts

• Insert designation: CNMG120412
• Size: 12 mm
• Plate thickness: 4.76 mm
• Corner radius: 1.2 mm
• Relief angle: 0°
• Included angle: 80°

Special features

• Rhombic plate form (CNMG)
• Double-sided chipbreaker
• Cylindrical locating hole
• ISO-standard compatibility
• Designed for turning (Drehen)
• Suitable for rostfreie Stähle

FAQ

What materials are recommended for this insert?
The CNMG120412 AH6225 insert is specified for rostfreie Stähle and performs reliably on a broad range of stainless steel alloys.

How does the AH6225 grade affect tool life?
The PVD-coated AH6225 grade provides a balance of wear resistance and edge sharpness, extending life under varying cutting conditions compared with uncoated grades.

Is the insert compatible with standard CNMG holders?
Compatibility is determined by ISO form, plate thickness (4.76 mm), hole style and tolerance; the CNMG120412 fits standard CNMG pockets that accept ISO inserts.

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.