CNMG 120408 AH6225 Wendeplatten - Tungaloy

Take advantage of the combination of a sharp, stable cutting edge and a universal PVD-coated carbide grade for confident stainless-steel turning; the ISO CNMG 120408 geometry with 0° clearance and an 80° angle ensures reliable seating and repeatable performance. Order directly via Metav Werkzeuge or contact the consultants for tailored holder compatibility advice.

CNMG 120408 AH6225 Tungaloy turning indexable insert — PVD-coated carbide, 80° lead angle

CNMG 120408 AH6225 Tungaloy is an ISO‑standard rhombic turning insert designed for external and internal turning of rostfreier Stahl, offering a balance of sharpness and edge stability for medium machining tasks.

• PVD-coated carbide AH6225 for rostfreier Stahl
• ISO CNMG 120408 rhombic insert
• Double-sided chipbreaker with cylindrical hole
• 0° clearance angle and 80° lead angle

Precision and process stability for stainless‑steel turning

The rhombic CNMG 120408 geometry delivers a predictable contact condition with the workpiece and stable clamping in widely used holders. The PVD-coated AH6225 grade combines a carbide substrate with a thin, wear-resistant coating to resist built-up edge formation common in rostfreier Stahl machining; this yields longer effective cutting life and more consistent cycle times. For shops aiming to reduce process variation, the insert’s balanced design reduces vibration risk and helps maintain part tolerances during batch production.

Compatibility and practical holder selection

Compatibility is determined by insert shape, clearance, tolerance class, mounting style, size and thickness. The rhombic form, 4.76 mm thickness and 12 mm size of this insert make it suitable for a broad range of external holders and boring bars; the cylindrical hole ensures secure fastening and easy indexability. Choosing a holder with matching pocket geometry and correct screw clamping will ensure the 80° lead angle and 0° clearance deliver the expected cutting orientation. For varied applications, pairing the insert with a holder that provides adequate rigidity is the most direct route to improved surface finish and repeatability.

Coating, chip control and tool life explained

The PVD-coated surface of the AH6225 grade enhances thermal and adhesive wear resistance while preserving a relatively sharp cutting edge for stainless‑steel work. The double-sided chipbreaker supports controlled chip formation under changing conditions, reducing the likelihood of tangling and workpiece damage. In practice this translates into fewer unscheduled tool changes and more productive setup-to-finish cycles. For users less familiar with coating terminology: PVD (physical vapour deposition) is a thin-film process that bonds a hard layer to the carbide base, improving wear protection without significantly dulling the edge geometry.

For a recommendation tailored to specific holders or to order the CNMG 120408 AH6225 Tungaloy insert, contact Metav Werkzeuge — technical consultants are available by e‑mail or telephone to advise on compatibility and delivery options.

Technical data

• Article number: 6946963
• SKU: 6946963-Tungaloy
• Manufacturer SKU: TUN6946963
• Model series: ISO-Drehwendeschneidplatten

Numerical data

• Insert size: 12 mm
• Corner radius: 0.8 mm
• Thickness: 4.76 mm
• Lead/insert angle: 80°
• Clearance angle: 0°
• Manufacturer article number: 6946963

Designs / Special features

• Material: carbide
• Coating: PVD
• Shape: rhombic
• Hole: with cylindrical hole
• Chipbreaker: double-sided
• Application: turning (external and internal)
• Grade: AH6225 — universal for rostfreier Stahl

FAQ

What materials is this insert suited for?
The CNMG 120408 AH6225 Tungaloy insert is optimised for rostfreier Stahl and performs well in medium cutting conditions where a balance of sharpness and edge stability is required.

How does the PVD coating benefit machining performance?
The PVD-coated AH6225 grade on this turning insert improves resistance to adhesive and thermal wear, which in turn helps maintain cutting edge profile and extends tool life during rostfreier Stahl operations.

Is this insert compatible with standard CNMG holders?
Yes — the insert follows ISO CNMG 120408 dimensions; compatibility depends on matching the holder pocket, clamping style, tolerance class and insert thickness to ensure correct seating and clamping force.

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.