CNMG 120412 T9215 Wendeplatten - Tungaloy

Take advantage of a purpose-designed indexable insert that combines CVD-coated cemented carbide and a compact 80° rhombic geometry to deliver consistent productivity when turning medium steels; request availability or technical advice from Metav Werkzeuge for seamless integration into existing toolholders.

CNMG 120412 T9215 – Indexable turning insert, 80° rhombic (Tungaloy)

CNMG 120412 T9215 is an ISO‑format indexable turning insert engineered for medium‑duty steel machining, offering a robust radiused cutting edge and stable chip control for continuous to slightly interrupted cuts.

• CVD-coated cemented carbide grade T9215
• 80° rhombic geometry for stable turning
• 1.2 mm corner radius for robust edges
• Double-sided chipbreaker, cylindrical hole

Delivering consistent productivity on medium steels

The insert’s CVD coating combined with a cemented carbide body gives a reliable balance between wear resistance and edge strength. This composition makes it especially suited to sustained production runs where tool life and process stability matter. Selecting the T9215 grade supports higher cutting parameters without compromising component quality, so material removal rates can be optimised while maintaining repeatable results.

Precise edge form for dependable surface finish

The 80° rhombic geometry with a 1.2 mm corner radius produces a stable cutting edge that reduces vibration and improves surface integrity during external and internal turning. The double-sided chipbreaker fosters reliable chip formation and evacuation, which lowers the risk of built-up edge and conserves machine uptime. Together these features enable improved part finishes and a predictable tool change schedule.

Compatibility and simple replacement in tooling systems

As an ISO‑standard insert, the CNMG120412 fits holders that match the insert shape, clearance angle and clamping arrangement. The insert’s cylindrical hole and standard dimensions (size 12, thickness 4.76 mm) support straightforward indexing and replacement, reducing fixture downtime. Clear labelling of the ISO designation and grade simplifies inventory and reordering processes for production planning.

Engineered for a range of turning conditions

Designed for turning applications, the grade performs well in continuous to slightly interrupted cuts typical of many turning operations. The combination of T9215 metallurgy and the supported chipbreaker makes this insert a solid choice for shops seeking both edge durability and consistent chip control, translating into fewer scrap parts and more efficient cycle times.

Practical benefit summary for the workshop

Adopting this grade and geometry helps stabilise the machining process: higher sustained cutting speeds become feasible, regrinds are minimised and tool changes become predictable. The technical balance of coating, substrate and geometry contributes to a measurable increase in process reliability and overall throughput for medium steel components.

Contact Metav Werkzeuge for tailored advice on integrating the Tungaloy CNMG120412 T9215 indexable insert into specific turning operations; email info@metav-werkzeuge.com or call +49 2822 7131930

Technical specification

• Article number: 6796066
• Manufacturer SKU: TUN6796066
• SKU: 6796066-Tungaloy
• Model series: ISO-Drehwendeschneidplatten
• ISO designation: CNMG120412
• Grade: T9215
• Material: cemented carbide
• Coating: CVD-coated
• Application: Turning
• Typical use: External and internal turning
• Geometry: rhombic, 80°
• Size: 12
• Thickness: 4.76 mm
• Corner radius: 1.2 mm
• Clearance angle: 0°
• Hole: with hole
• Hole style: cylindrical
• Chipbreaker: double-sided

Performance data

• Designed for medium steel machining
• Suitable for continuous to slightly interrupted cuts
• Balances wear resistance and fracture toughness
• Promotes stable chip formation

Features and handling

• ISO‑standard form for easy replacement
• Double-sided usability for cost efficiency
• Cylindrical hole for secure clamping
• Compact radiused edge for improved surface finish

FAQ

What materials is this insert intended for?
The CNMG120412 T9215 insert is optimised for medium steel machining and provides a robust balance of wear resistance and toughness suitable for those materials.

How does the CVD coating influence performance?
The CVD-coated surface on the cemented carbide body increases thermal and abrasive wear resistance, extending edge life and enabling higher cutting parameters with consistent results.

Can the insert be used for interrupted cuts?
Yes, the grade and edge geometry are suitable for continuous to slightly interrupted cuts; for heavy interruptions, a different edge preparation may be advisable.

How is the insert mounted and indexed?
The insert uses a cylindrical hole and standard ISO geometry; it indexes on compatible holders that match the rhombic form, clearance angle and thickness.

What are the key benefits of the 1.2 mm corner radius?
A 1.2 mm corner radius strengthens the cutting edge against chipping, reduces vibration and contributes to a superior surface finish on turned parts.

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.