TNMG 220412 AH6225 Wendeplatten - Tungaloy

Take advantage of a PVD-coated AH6225 grade that balances a sharp, stable cutting edge with broad material suitability and simple holder compatibility; order directly through Metav Werkzeuge for rapid supply or consult for holder selection.

TNMG220412 AH6225 Tungaloy indexable insert for turning (ISO 220412)

The TNMG220412 AH6225 Tungaloy insert is an ISO‑standard triangular turning insert designed for external and internal turning of stainless steels, offering reliable edge stability in medium machining and variable conditions.

• TNMG220412 indexable insert for turning
• PVD-coated AH6225 grade for stainless steels
• Double-sided with 0° clearance angle
• 60° triangular form, 1.2 mm corner radius

Consistent performance for stainless steels and mixed batches

The TNMG220412 AH6225 insert combines a PVD coating with a wear‑resistant carbide substrate to provide consistent cutting behaviour when machining stainless steels. The AH6225 grade is formulated to maintain a sharp and stable cutting edge at medium cutting parameters, which reduces the need for frequent insert changes and supports steady machining cycles. This makes the insert especially suitable for mixed production runs where tool life and predictable surface finish are priorities.

Secure seating, standard fit and simple retrofitting

Compatibility with toolholders is governed by form, clearance angle, tolerance class, mounting method, size and thickness. The insert’s 60° triangular form, 22 mm inscribed circle and 4.76 mm thickness follow ISO conventions, enabling straightforward selection of matching external holders or boring bars. The central cylindrical hole allows positive clamping and repeatable positioning, while the 0° clearance angle ensures stable contact under varying cutting forces. Such standard dimensions help reduce setup time and simplify inventory management.

Improved chip control and stable cutting in variable conditions

A double-sided chipbreaker provides balanced chip control for turning operations, helping to form predictable chips and reduce the risk of entanglement in long or interrupted cuts. The 1.2 mm corner radius supports a robust cutting edge that tolerates moderate feed variations and contributes to a consistent surface finish. For shops prioritising uptime and reproducible part quality, this combination of edge geometry and chip control increases process reliability and reduces scrap rates.

Practical benefits in day-to-day turning processes

Designed for both external and internal turning, the insert’s geometry and coating allow flexible use across a range of part sizes and workpiece setups. The PVD layer enhances oxidation resistance at elevated cutting temperatures typical of stainless steel machining, extending effective tool life. With ISO conformity and common mount characteristics, the insert integrates easily into existing tool inventories, supporting efficient changeovers and predictable production flow.

Contact Metav Werkzeuge for tailored recommendations on holders, compatible tool systems and stocking options for Tungaloy inserts — email info@metav-werkzeuge.com or call +49 2822 7131930 to discuss requirements.

Technical data

• Article number: 6903221
• SKU: 6903221-Tungaloy
• Manufacturer SKU: TUN6903221
• Model series: ISO-Drehwendeschneidplatten
• Label: TNMG220412 AH6225 Tungaloy-Wendeplatte

Facts

• Corner radius: 1.2 mm
• Thickness: 4.76 mm
• Inscribed circle: 22 mm
• Form angle: 60°
• Clearance angle: 0°

Special features

• Grade: AH6225
• Coating: PVD-coated carbide
• Shape: triangular indexable insert
• Hole: with cylindrical hole for clamping
• Chipbreaker: double-sided
• Application: Turning (external and internal)
• ISO designation: TNMG220412

FAQ

What materials is this insert best suited to machine?
The TNMG220412 AH6225 Tungaloy insert is optimised for stainless steels and performs well across varying conditions typical of medium turning operations.

Can this insert be used for both external and internal turning?
Yes, the ISO‑standard geometry and clamping hole make the insert suitable for both external and internal turning with compatible holders.

How does the AH6225 grade affect tool life and edge stability?
The AH6225 grade offers a balanced combination of sharpness and edge robustness; the PVD coating improves wear resistance and supports longer, more predictable tool life in stainless steel applications.

Is the insert reversible or single‑use?
This is a double‑sided indexable insert; both edges can be indexed, which doubles the available cutting edges per insert compared with single‑sided designs.

Which dimensions must be matched when choosing a holder?
Match the insert’s form (triangle), 22 mm inscribed circle, 4.76 mm thickness, hole style and clearance angle to the holder specification to ensure secure clamping and correct geometry.

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.