CNMG 120408 T9215 Wendeplatten - Tungaloy

Take advantage of the combination of high wear resistance, robust fracture toughness and proven ISO compatibility for efficient turning operations; order the insert directly via Metav Werkzeuge or consult our specialists for application advice.

CNMG 120408 T9215 indexable turning insert by Tungaloy — for medium steel turning

CNMG 120408 T9215 Tungaloy-Wendeplatte is an ISO‑normed, rhombic indexable insert designed for external and internal turning in continuous to lightly interrupted cuts

• ISO rhombic insert for standard holders
• CVD-coated carbide grade T9215
• Double-sided geometry with cylindrical hole
• 0° relief angle for robust profile

Consistent productivity in medium steel turning

The CVD-coated carbide composition of this insert, specified as grade T9215, combines high wear resistance with improved fracture toughness to sustain longer tool life under steady machining conditions. This makes the insert particularly suited to medium steel workpieces where a balance between tool life and process stability is required. The rhombic geometry delivers predictable cutting engagement; the design minimises the risk of unexpected breakage during continuous cutting and provides a stable platform for repeatable part quality. Understanding that "CVD-coated" refers to a chemical vapour deposition coating helps clarify that the insert receives a very uniform, wear‑resistant surface layer, which in turn supports higher productivity and reduced downtime.

Optimised chip control and insert geometry for reliable results

Built with a double-sided chipbreaker and a cylindrical hole for secure clamping, the insert offers reliable chip control and repeatable seating in the toolholder. The modest 0° relief and an edge radius of 0.8 mm contribute to a robust cutting edge that tolerates variable cutting forces and small interruptions. For operators less familiar with insert selection: the corner radius influences surface finish and strength—larger radii improve edge strength but may affect finishing, while the rhombic shape provides good access for both external turning and light profiling. These geometric choices translate into fewer tool changes and more sustained production runs.

Practical compatibility and handling in workshop routines

As an ISO‑series insert, the CNMG‑format ensures broad compatibility with standard external holders and boring bars, provided the holder matches the plate form, clearance angle, tolerance class, fixation method and thickness. The insert’s 4.76 mm thickness and 12 mm size are typical for general turning inserts, simplifying tool inventory management. In practice, using this grade reduces the need for frequent re‑qualification of cutting parameters: once the combination of T9215 grade and suitable chipbreaker is established for a material and operation, feed and speed windows remain stable, supporting predictable cycle times and consistent surface quality.

For tailored application guidance on the Tungaloy T9215 grade and to confirm stock and delivery options, contact Metav Werkzeuge for a technical consultation by e‑mail at info@metav-werkzeuge.com or by phone on +49 2822 7131930; our consultants will advise on holder compatibility and cutting data.

Technical data

• Article number: 6772156
• Manufacturer SKU: TUN6772156
• SKU: 6772156-Tungaloy
• Model series: ISO-Drehwendeschneidplatten
• Material: Hartmetall

Facts

• Angle: 80°
• Corner radius: 0.8 mm
• Relief angle: 0°
• Plate thickness: 4.76 mm
• Plate size: 12 mm

Special features

• Grade: T9215 (CVD-coated carbide)
• Shape: rhombic
• Hole: cylindrical hole
• Chipbreaker: double-sided
• Application: turning
• ISO designation: CNMG120408

FAQ

What materials is this insert best suited for?
The T9215 grade is primarily developed for medium steel machining; it combines wear resistance and toughness for productive turning operations.

Is the CNMG format compatible with standard ISO holders?
Yes, the CNMG120408 conforms to ISO dimensions; compatibility depends on matching holder form, thickness and clamp system for secure seating.

How does the 0° relief angle affect cutting?
A 0° relief provides a robust profile that tolerates variable cutting forces and small interruptions, improving edge strength at the cost of requiring an accurately set holder setup.

Can this insert be used for internal boring as well as external turning?
The rhombic shape and standard ISO sizing allow use in suitable boring bars and external holders, enabling both internal and external turning when the holder geometry permits.

What benefits does the CVD coating provide?
The CVD-coated carbide layer offers uniform wear resistance and thermal stability, extending tool life and maintaining cutting-edge integrity during continuous cuts.

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.