CNMG 120404 AH6225 Wendeplatten - Tungaloy

Take advantage of the combination of ISO-standard geometry, a PVD-coated carbide grade tuned for stainless steels, and a double-sided chipbreaker for economical indexing and stable machining; order directly via Metav Werkzeuge or consult the team for application-specific advice.

CNMG120404 AH6225 – Indexable turning insert (ISO) by Tungaloy

CNMG120404 AH6225 Tungaloy indexable insert is an ISO‑standard rhombic insert designed for external and internal turning in a wide range of stainless steels and similar materials

• CNMG120404 geometry, ISO-standard for easy fit
• AH6225 PVD-coated carbide for stainless steel machining
• Double-sided chipbreaker for external and internal turning
• 0.4 mm corner radius for precise edge control

Reliable geometry for consistent holder compatibility

The ISO-series rhombic format with an 80° included angle and 0° relief provides a predictable contact geometry that simplifies toolholder selection and setup. Compatibility with toolholders depends on form, relief angle, tolerance class, fastening and plate thickness; this insert’s ISO-standard CNMG form reduces guesswork at the bench and shortens set‑up times. The presence of a cylindrical hole and standard dimensions ensures secure clamping in commonly used external holders and boring bars, supporting both roughing and finishing passes without unexpected movement or chatter.

Coating and grade tailored for stainless steels and mixed conditions

The insert is manufactured from PVD‑coated carbide (AH6225), a universal grade developed for rostfreie Stähle and similar alloys. The coating stabilises the cutting edge at moderate cutting speeds and varying conditions, while the substrate maintains toughness to resist chipping. The result is a sharp but stable cutting edge that helps extend interval between indexings, improves surface finish and reduces rework. For shops facing mixed batches, this grade offers a balance between wear resistance and edge stability, translating into more predictable tool life and lower per‑part tool cost.

Practical features that increase workshop productivity

Built with a 4.76 mm thickness and a nominal 12 mm size, the insert delivers robust support in the pocket and reliable chip control. The double-sided chipbreaker provides economical use—each insert can be indexed multiple times before replacement—while the 0.4 mm corner radius allows controlled engagement for repeatable edge strength and dimensional accuracy on turned components. These practical attributes help maintain cutting performance in medium machining operations and make the insert suitable for both workshop milling and satellite turning applications where consistent repeatability is required. For detailed process parameters, Metav Werkzeuge’s technical advisors can recommend feeds and speeds aligned to material and stability.

Contact Metav Werkzeuge for personalised application advice on the Tungaloy AH6225 grade and to arrange a tailored supply solution via info@metav-werkzeuge.com or +49 2822 7131930

Technical Data

• Article number: 6946684
• Manufacturer SKU: TUN6946684
• SKU: 6946684-Tungaloy
• Material: Carbide
• Grade/coating: AH6225, PVD-coated

Facts

• Geometry: CNMG120404 (ISO 120404)
• Corner radius: 0.4 mm
• Thickness: 4.76 mm
• Size: 12 mm
• Included angle: 80°
• Relief (free) angle: 0°

Special features

• Plate form: rhombic
• Hole: with cylindrical hole
• Chipbreaker: double-sided
• Typical application: external and internal turning
• Series: ISO turning indexable inserts

FAQ

What materials is this insert recommended for?
The CNMG120404 AH6225 Tungaloy indexable insert is specified for rostfreie Stähle (stainless steels) and performs well on mixed batches where a balance of edge stability and wear resistance is required.

How does the AH6225 grade affect machining performance?
AH6225 PVD‑coated carbide offers a sharp, stable cutting edge at moderate conditions; the coating improves wear resistance while the substrate maintains toughness for predictable tool life with the CNMG geometry.

Can the insert be used for both external and internal turning?
Yes, the combination of CNMG form, double‑sided chipbreaker and cylindrical hole fastening makes the insert suitable for external and internal turning operations using compatible holders and boring bars.

What does the 0.4 mm corner radius mean for surface finish?
A 0.4 mm radius provides controlled edge strength and helps achieve repeatable dimensional accuracy, contributing to improved surface finish on turned parts during medium machining.

Which spare parts or consumables are required for mounting?
Standard clamping sets, mounting screws and an appropriate support pad for the CNMG ISO form are required; specifications depend on the chosen holder and tolerance class.

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.