CCMT 120412 AH725 Wendeplatten - Tungaloy

Benefit from the combination of a PVD-coated AH725 carbide grade and a single-sided chipbreaker to secure stable chip formation and consistent performance when turning steel and stainless steels; order the insert directly via Metav Werkzeuge or consult our specialists for tailored selection advice.

CCMT120412 AH725 — Tungaloy indexable turning insert, PVD-coated carbide, 1.2 mm radius

CCMT120412 AH725 is an ISO‑design indexable turning insert for external and internal turning, engineered for robust chip control and dependable performance in mixed‑material production.

Universal PVD-coated carbide AH725 Rhombic CCMT form, 12 mm size 7° clearance, 1.2 mm nose radius Cylindrical hole with single-side countersink

Stable cutting and controlled chip flow for consistent cycle times

The PVD‑coated AH725 grade offers a balanced solution between toughness and resistance to adhesion, making it suitable for mixed batches of steel and stainless steels where process security is crucial. The combination of a coated carbide substrate and a dedicated chipbreaker reduces the risk of edge chipping and ensures predictable chip formation, which in turn lowers the likelihood of unplanned stoppages. The PVD coating increases edge strength at elevated temperatures and improves wear resistance during medium to high cutting speeds; this yields a reliable machining window and contributes to more uniform tool life.

Precision geometry that simplifies setup and improves repeatability

The rhombic CCMT form with a 12 mm inscribed circle and a 1.2 mm nose radius gives a predictable profile for finishing and light to medium turning operations. The insert features a 7° clearance angle and an 80° geometry, compatible with a wide range of external and internal holders when the form, tolerance class, fastening and thickness match the toolholder specification. A cylindrical central hole with a single‑side countersink (40°–60°) ensures secure clamping and simple indexable replacement, reducing set‑up time and improving repeatability across batches. Clear indication of dimensions and ISO designation simplifies tool management and reordering.

Suited to demanding shopfloor use and flexible production environments

As a universal, breakout‑resistant grade, this insert is particularly beneficial where small‑scale tooling or frequent material changes occur. The single-sided chipbreaker is optimised for consistent swarf evacuation in turning, supporting shorter cycle times and cleaner workpieces. In a typical system build—indexable insert, matched external holder or boring bar, shim/underlay and replacement screws—the modular approach allows rapid fault recovery: worn edges can be indexed or replaced without complex regrinding. The result is a practical combination of productivity and low process variability, ideal for production runs that require both flexibility and stability.

Contact Metav Werkzeuge for precise advice on matching the Tungaloy AH725 grade to holders and processes; call +49 2822 7131930 or email info@metav-werkzeuge.com to request assistance or place an order

Technical data

• Article number: 6856768
• Manufacturer SKU: TUN6856768
• SKU: 6856768-Tungaloy
• Model series: ISO turning indexable inserts
• ISO designation: CCMT120412

Core technical data

• Nose radius: 1.2 mm
• Clearance angle: 7°
• Included angle/geometry: 80°
• Plate thickness: 4.76 mm
• Plate size (inscribed circle): 12 mm
• Manufacturer article number: 6856768

Features & applications

• Material: carbide
• Coating: PVD (AH725)
• Chipbreaker: single-sided
• Plate shape: rhombic (CCMT)
• Hole style: cylindrical hole + single-side countersink (40°–60°)
• Typical application: external and internal turning
• Suitable materials: steel and stainless steels
• System setup: insert, holder/boring bar, shim/underlay, screws
• ISO‑standardised insert designation

FAQ

What machining tasks is this insert best suited for?
The CCMT120412 AH725 Tungaloy insert is designed for external and internal turning with a focus on mixed production of steel and stainless steels where reliable chip control and process security are required.

How does the AH725 coating help in everyday production?
The PVD coating of the AH725 grade improves edge strength and wear resistance at elevated temperatures; this enhances tool life and provides more consistent performance across varying cutting speeds and material batches when using the Tungaloy indexable turning insert (SKU 6856768-Tungaloy).

Which holder features are necessary for correct compatibility?
Compatibility depends on the holder matching the insert form, clearance angle, tolerance class, fastening method, size and thickness; the CCMT120412 geometry and central hole style require a holder designed for CCMT‑type, 12 mm inserts.

Can the insert be used for finishing and light profiling?
Yes, with a 1.2 mm nose radius and rhombic geometry the insert performs well in finishing and light to medium profiling operations, delivering repeatable surface results when clamped in the appropriate holder.

What replacement parts are recommended for a complete system setup?
A complete setup typically includes the indexable insert, a compatible external holder or boring bar, a shim/underlay and replacement screws; selecting the correct holder and fastening hardware is essential for the CCMT120412 AH725 insert to achieve stable results.

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.