CNMA 120412 T9205 Wendeplatten - Tungaloy

Benefit from the combination of CVD‑coated carbide T9205, ISO CNMA geometry and a 1.2 mm corner radius for productive, reliable turning under stable conditions; order the CNMA120412 insert directly via Metav Werkzeuge or request specialist advice from our consultants.

CNMA120412 T9205 ISO turning indexable insert for turning by Tungaloy

The CNMA120412 T9205 is an ISO‑standard rhombic indexable insert designed for external and internal turning of steel where stable setups and higher cutting speeds are required.

• ISO rhombic CNMA insert form
• CVD-coated carbide grade T9205
• 1.2 mm corner radius for strength
• Cylindrical hole for secure clamping

Maximised productivity through wear‑resistant coating and grade

The combination of a CVD‑coated surface and carbide substrate in grade T9205 provides pronounced wear resistance, enabling higher cutting speeds and longer intervals between index changes in productive turning operations. For metalcutting shops aiming to reduce cycle time, this insert converts material removal demands into consistent throughput; the coating reduces flank wear while the substrate maintains edge integrity during continuous cuts. The result is more stable machining and fewer unplanned tool changes, supporting efficient production runs.

Reliable geometry for consistent clamping and cutting forces

Adopting an ISO‑standard rhombic CNMA form with an 80° approach angle gives a balanced compromise between cutting-edge strength and versatility for external and internal turning. The 1.2 mm corner radius increases edge robustness for interrupted cuts and longer engagement times, while the cylindrical hole ensures secure clamping in compatible toolholders. These geometric choices reduce vibration sensitivity and help maintain repeatable part tolerances, translating insert geometry into measurable process stability for serial production.

Clear application window and material focus

Designed primarily for turning steel under stable cutting conditions, the insert suits operations where a continuity of cut and controlled chip flow are present. The geometry and the absence of an integrated chipbreaker make it appropriate for steady, high‑productivity cutting rather than aggressive chip control scenarios. The insert’s dimensions — including 4.76 mm thickness and size 12 designation — support robust engagement and are compatible with standard CNMA‑type clamping systems, facilitating straightforward integration into existing machining cells.

System compatibility and practical integration advice

Compatibility depends on holder form, clearance angle, tolerance class, clamping type, size and thickness; matching the insert to the correct external holder or boring bar is essential for best results. The insert is intended to be used as part of a system comprising the insert, a matching toolholder, a seating or clamping kit and replacement screws. For workshops seeking an immediate upgrade in turning performance, the insert provides a reliable component within a proven ISO system that simplifies stock keeping and holder interchangeability.

For high‑productivity turning with Tungaloy’s T9205 grade, contact Metav Werkzeuge for direct supply and tailored technical consultation.

Technical Data

• Article number: 6785727
• Manufacturer article number: 6785727
• Manufacturer SKU: TUN6785727
• Model series: ISO turning indexable inserts
• Designation: CNMA120412

Core dimensions

• Corner radius: 1.2 mm
• Thickness: 4.76 mm
• Size: 12
• Approach angle: 80°
• Clearance angle: 0°

Special features

• Material: carbide
• Coating: CVD
• Grade: T9205
• Shape: rhombic
• Hole: with hole
• Hole style: cylindrical hole
• Chipbreaker: without
• Application: turning
• System components: insert, holder, seating/clamping set, replacement screws

FAQ

Which materials is this insert intended for?
The CNMA120412 T9205 insert is specified for turning steel; the T9205 grade and CVD coating are optimised for wear resistance under stable machining conditions.

How does the 1.2 mm corner radius affect performance?
A 1.2 mm corner radius increases edge strength and resistance to chipping, making the insert suited to heavier engagement and intermittent cuts while helping to preserve dimensional stability.

What determines holder compatibility for this insert?
Compatibility is defined by the insert form, clearance angle, tolerance class, clamping method, size and thickness; matching these parameters to the toolholder ensures secure seating and repeatable results with the CNMA geometry.

Is a chipbreaker integrated in this grade?
This insert is supplied without a chipbreaker; it is therefore best used where chip control is managed by cutting conditions, tool path or downstream chip handling rather than by an integrated breaker.

What advantages does the T9205 grade offer compared with standard grades?
The T9205 grade combines a robust carbide substrate with a CVD coating to deliver improved wear resistance and stable tool life at raised cutting speeds, supporting productive turning in stable setups.

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.