CNMG 120408 T9215 Wendeplatten - Tungaloy

Take advantage of a proven CVD-coated carbide grade that balances wear resistance and fracture toughness for reliable mid-range steel machining, combined with ISO compatibility and a modest corner radius for versatile turning tasks; order the inserts directly via Metav Werkzeuge or consult our specialists for application advice.

CNMG 120408 T9215 indexable insert for turning — Tungaloy

The CNMG 120408 T9215 is an ISO-standard rhombic indexable insert designed for external and internal turning, combining a CVD-coated carbide grade with a double-sided geometry and cylindrical hole for secure clamping.

• ISO‑standard CNMG form, compatible with many holders
• CVD‑coated carbide grade T9215 for medium steel
• Rhombic plate, 4.76 mm thickness, cylindrical hole
• Double‑sided insert with 0.8 mm corner radius
• Suitable for external and internal turning

Consistent cutting performance for medium steel turning

The rhombic geometry and the CVD‑coated T9215 grade deliver a stable balance between wear resistance and edge toughness, which is particularly beneficial for continuous to lightly interrupted cuts. The coating reduces flank wear while the substrate offers shock tolerance; this combination supports longer cutting intervals and predictable tool life. For users seeking steady throughput, the insert’s specifications promote reliable chip formation and repeatable surface finish, supporting leaner process windows and fewer tool changes.

Clear guidance on compatibility and secure clamping

Compatibility with a turning toolholder is determined by form, clearance angle, tolerance class, fastening style, size and thickness. The ISO CNMG outline and the centrally positioned cylindrical hole ensure straightforward seating and positive clamping with standard CNMG holders. The 0.8 mm corner radius provides a compromise between strength and edge definition, enabling stable engagement on a broad range of turning setups without requiring custom fixtures or special mounting procedures.

What the cutting grade and coating mean in practice

The T9215 grade is a CVD‑coated carbide engineered as a first choice for medium-steel applications: it combines high abrasion resistance with good resistance to chipping. In practice, this means fewer interruptions for insert changes and consistent part quality over longer runs. CVD coatings deposit hard ceramic layers that resist abrasive wear; the underlying carbide maintains substrate toughness. For operations where a balance between productivity and edge security is needed, this grade reduces the risk of sudden edge failure while maintaining acceptable flank wear rates.

Practical application tips to maximise productivity

Use the insert in conventional turning feeds and speeds for medium steels, and select a chipbreaker and cutting parameters matched to the workpiece stability and machining strategy. The double‑sided design effectively doubles the number of usable edges per insert, improving cost efficiency. Where interrupted cuts are expected, moderate downforce and controlled entry angles will conserve edge life. For optimised results, pair the insert with a holder that matches the CNMG form and tolerance class to ensure consistent seating and repeatable results.

For application-specific recommendations or to secure supply of Tungaloy inserts, contact Metav Werkzeuge for personalised advice and ordering — eMail: info@metav-werkzeuge.com | Tel: +49 2822 7131930

Technical data

• Article number: 6773890
• Manufacturer SKU: TUN6773890
• Internal SKU: 6773890-Tungaloy
• Model series: ISO‑Drehwendeschneidplatten
• Application: Turning

Core dimensions

• Size: 12
• Thickness: 4.76 mm
• Corner radius: 0.8 mm
• Clearance angle: 0°
• Approach angle: 80°

Design & special features

• Plate form: rhombic
• Coating / substrate: CVD‑coated carbide
• Grade: T9215
• Hole: with cylindrical hole
• Sidedness: double‑sided insert
• Chipbreaker: double‑sided

FAQ

What materials is this insert intended for?
The CNMG 120408 T9215 insert is designed primarily for medium steel machining; the T9215 CVD‑coated carbide grade balances wear resistance and toughness for such materials.

Is the insert suitable for both external and internal turning?
Yes. The rhombic CNMG form and the central cylindrical hole make the insert suitable for both external and internal turning operations.

How many usable cutting edges does the insert offer?
The insert is double‑sided, providing multiple indexable edges; how many usable edges depend on the specific holder orientation and wear on each edge.

What does the 0° clearance angle mean for setup?
A 0° clearance angle indicates the flank relief geometry of the insert; matching holder geometry and correct seating are essential to achieve the intended cutting behaviour and surface finish.

Which chipbreaker should be chosen for roughing versus finishing?
Select a more aggressive chipbreaker and higher feed for roughing and a finer chipbreaker with reduced feed for finishing; the double‑sided chipbreaker on this insert supports a range of feeds depending on stability and desired surface quality.

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.