CNMG 120404 AH6225 Wendeplatten - Tungaloy

Take advantage of the PVD‑coated carbide AH6225 and the 0.4 mm nose radius to achieve consistent surface finish and long tool life in medium stainless steel turning; the ISO compatibility ensures simple integration into existing tool systems. Order the CNMG120404 AH6225 Tungaloy insert directly via Metav Werkzeuge or ask our consultants if needed.

CNMG 120404 AH6225 Tungaloy turning insert — PVD‑coated carbide, 0.4 mm radius

The CNMG120404 AH6225 is an ISO‑standard turning insert for external and internal turning, engineered for reliable performance when machining stainless steels and variable cutting conditions.

• ISO‑standard CNMG 120404 insert
• PVD‑coated carbide grade AH6225
• 0.4 mm nose radius for fine surface
• Cylindrical mounting hole, secure clamping

Faster, more consistent stainless steel turning with a sharp, stable edge

The PVD‑coated carbide grade AH6225 combines a keen cutting edge with structural stability, optimised for medium‑duty turning of stainless steel. The coating reduces adhesive wear and improves heat resistance, so material transfer to the cutting edge is minimised and tool life is extended under fluctuating conditions. The rhomboid CNMG geometry with an 80° cutting angle delivers a balance between cutting strength and accessibility in shoulder and contour work, while the 0.4 mm nose radius helps achieve a fine surface finish without excessive cutting forces. These characteristics translate into fewer insert changes and a steadier production flow.

System compatibility and secure clamping for predictable setups

As an ISO‑standard indexable insert, the part integrates with common external holders and boring bars; compatibility is governed by form, clearance, tolerance class, fastening and size rather than by brand. The cylindrical mounting hole and standard dimensions (size 12, thickness 4.76 mm) ensure firm seating and repeatable positioning in the seat and clamp. The insert is double‑sided with a chipbreaker on each face, allowing economical use of both cutting edges and facilitating predictable chip control when the appropriate chipbreaker and grade are selected for the workpiece and rigidity of the setup. This standardisation reduces set‑up time and inventory complexity.

Productive machining and predictable tool life for workshop efficiency

The grade selection aims for wide applicability: a sharp but robust cutting edge for medium cutting depths, good wear resistance from the PVD layer and stable chip formation across a broad range of stainless alloys. For customers seeking to increase uptime, the combination of a reliable carbide substrate and a controlled chipbreaking geometry supports higher material removal rates without compromising surface quality. The indexable format also reduces per‑part tooling cost by enabling rapid edge changes and consistent replacement, supporting a leaner production process and lower overall tooling expenditure.

For tailored cutting data, toolholder pairing or to request sample inserts from Metav Werkzeuge, please contact Metav Werkzeuge for application advice and availability.

Technical data

• Article number: 6946940
• Our SKU: 6946940-Tungaloy
• Manufacturer SKU: TUN6946940
• Material: Carbide

Numbers / core technical data

• ISO designation: CNMG120404
• Size: 12
• Thickness: 4.76 mm
• Nose radius: 0.4 mm
• Cutting angle: 80°
• Clearance (relief) angle: 0°
• Mounting: with cylindrical hole

Designs / special features

• Rhomboid plate form
• PVD coating on carbide substrate
• Grade AH6225 for stainless steel
• Double‑sided chipbreaker
• ISO‑standard indexable insert for turning
• Compatible with standard external holders and boring bars

FAQ

What materials is this insert suited for? The CNMG120404 AH6225 Tungaloy insert (SKU 6946940‑Tungaloy) is optimised for stainless steel machining and offers a wide material coverage for common stainless alloys.

How does the PVD coating benefit the cutting process? The PVD coating on the AH6225 grade increases wear resistance and reduces adhesion, which improves edge stability and extends cutting life under medium turning conditions.

Can the insert be used on both external and internal turning operations? Yes, the ISO‑standard geometry and the rhomboid CNMG form make the insert suitable for external turning and internal applications when paired with the correct holder.

How does the 0.4 mm nose radius affect surface finish and strength? A 0.4 mm radius provides a compromise between a fine surface finish and edge strength; it reduces scallop height while maintaining sufficient robustness for medium cutting depths.

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.