CNMG 120412 AH6225 Wendeplatten - Tungaloy

Benefit from the combination of a PVD-coated AH6225 carbide grade for reliable stainless steel turning, the ISO CNMG 120412 rhombic form for fast changeovers, and a 1.2 mm nose radius that balances edge strength with surface finish; order directly via Metav Werkzeuge or request application advice from our consultants.

CNMG 120412 AH6225 indexable turning insert for turning by Tungaloy — PVD-coated carbide, 80°

CNMG120412 AH6225 indexable turning insert designed for stable, versatile performance in external and internal turning of stainless steels and similar materials

• PVD-coated carbide AH6225 grade
• ISO CNMG 120412 rhombic geometry
• 80° included angle, 1.2 mm nose radius
• Cylindrical hole for secure clamping

Consistent cutting performance for medium turning operations

The PVD-coated carbide grade AH6225 delivers a sharp yet stable cutting edge specifically developed for changing machining conditions. The coating improves adhesion resistance and thermal stability, which translates into longer, more predictable tool life during medium cutting tasks on stainless steel. The 1.2 mm corner radius provides a compromise between robustness and surface quality: larger radii absorb cutting forces to protect the edge, while the CNMG geometry keeps chip formation controllable. This results in steady component tolerances and fewer insert changes in serial production.

Faster set-up and process reliability thanks to ISO compatibility

As an ISO-standard CNMG insert, the plate matches common external holders and boring bars when form, relief angle, tolerance class, fixing method, size and thickness are aligned. The cylindrical hole and double-sided chipbreaker enable secure clamping and reversible use, reducing inventory pressure and set-up time. With a relief angle of 0° and a rhombic plate form, this solution offers predictable seating and repeatable indexing; the CNMG120412 insert therefore supports stable cycle times and lowers the risk of clamping-related deviations.

Integrated system approach for improved chip control and finish

The insert is intended for use as part of a complete system — the indexable plate, an appropriate external holder or boring bar, underlay/clamping set and spare fixing screws — to achieve consistent results. Selecting the matching chipbreaker and the AH6225 grade according to the workpiece material and machine stability ensures effective chip control and an improved surface finish. For difficult-to-machine alloys or interrupted cuts, the combination of the CNMG geometry and PVD-coated carbide helps maintain an even cutting edge, enabling more efficient, cost-effective machining in batch production.

Contact Metav Werkzeuge for application-specific recommendations and availability of original Tungaloy CNMG120412 inserts: info@metav-werkzeuge.com | +49 2822 7131930

Technical data

• Article number: 6903166
• Manufacturer SKU: TUN6903166
• SKU: 6903166-Tungaloy
• Model series: ISO-Drehwendeschneidplatten
• Manufacturer: Tungaloy

Facts

• Corner radius: 1.2 mm
• Included angle: 80°
• Relief angle: 0°
• Plate thickness: 4.76 mm
• Plate size: 12 mm

Special features

• Grade/coating: AH6225, PVD-coated carbide
• Plate form: rhombic (CNMG)
• Hole: cylindrical hole
• Chipbreaker: double-sided
• Application: turning (external and internal)
• Compatibility: ISO CNMG holders; check form and tolerance

FAQ

What materials is this insert best suited for? The CNMG120412 AH6225 Tungaloy indexable turning insert is optimised for stainless steel and similar alloys; the AH6225 PVD-coated carbide balances edge sharpness and wear resistance for medium turning tasks.

Can the plate be flipped to use both sides? Yes — the insert features a double-sided chipbreaker and a central cylindrical hole, allowing reversible clamping and two cutting edges per side on the CNMG120412 insert (SKU 6903166-Tungaloy).

Which holders are compatible with this CNMG geometry? Compatibility requires a matching ISO CNMG holder that accommodates the 80° rhombic form, 12 mm size and 4.76 mm thickness; check holder form, relief angle and tolerance class when selecting equipment for the Tungaloy insert.

How does the 1.2 mm corner radius affect machining? A 1.2 mm radius increases edge strength and improves surface finish stability in medium cuts; the AH6225 grade helps maintain this edge with good wear resistance under variable conditions.

Is this insert suitable for internal boring as well as external turning? Yes — the design and chip control characteristics of the CNMG120412 AH6225 insert make it suitable for both external and internal turning operations when used with an appropriate boring bar or holder.

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.