CNMG 120412 T9205 Wendeplatten - Tungaloy

Take advantage of a CVD-coated carbide grade that delivers wear resistance and steady performance at higher cutting speeds, combined with an ISO‑conform geometry that ensures reliable seat and repeatability in production. Order directly via Metav Werkzeuge or consult our technical team for application-specific recommendations.

CNMG 120412 T9205 indexable turning insert — Tungaloy, ISO CNMG120412 for turning

The CNMG120412 T9205 is an ISO‑standard indexable turning insert designed for productive external and internal turning of steel under stable machining conditions.

• CVD-coated carbide grade T9205
• ISO CNMG120412 indexable format
• Double-sided chipbreaker geometry
• R 1.2 mm corner, 4.76 mm thickness

Durable grade for higher cutting speeds and consistent tool life

The CVD-coated carbide T9205 combines a wear‑resistant coating with a substrate engineered for productive turning. This grade is optimised for machining steel under stable cutting conditions, which means fewer insert changes and more uptime on the lathe. The coating reduces flank and crater wear, so cutting edge integrity is maintained at elevated speeds and feed rates. By selecting a wear‑resistant grade, cycle times can be shortened without compromising surface finish or dimensional stability.

Geometry and mounting that promote repeatable accuracy

The ISO CNMG120412 format and rhomboid shape with an 80° included angle provide a versatile cutting geometry suitable for a wide range of external and internal turning tasks. The insert is double‑sided, enabling indexable reuse of the second cutting edge to extend lifetime. A cylindrical hole simplifies secure clamping and positional repeatability in compatible holders, while the specified 0° clearance angle supports robust cutting under steady feeds. The overall system — insert, holder, clamp and screw — determines fitment and must match form and tolerance class for accurate seating.

Designed for stable production and straightforward process selection

With a corner radius of 1.2 mm and a thickness of 4.76 mm, the geometry balances edge strength and finishing capability. The double‑sided chipbreaker is matched to the grade to control chip formation, improving evacuation and reducing the risk of built‑up edge when machining medium to high alloy steels. In practice, this means more consistent surface quality and fewer interruptions for chip clearing, which supports predictable cycle times in serial production.

Practical compatibility and system considerations

The insert is supplied in the ISO‑standard CNMG120412 format, making it compatible with a wide range of external holders and boring bars designed for this size. Compatibility is governed by form, free‑angle, tolerance class, clamping method, size and thickness, so the holder selection should follow these parameters to ensure correct seating and secure fixation. For new setups, choosing a holder and clamp set that matches the insert geometry avoids misalignment and delivers repeatable tool performance.

For tailored advice on integrating this Tungaloy CNMG120412 T9205 insert into existing turning processes, or to secure optimal holder and clamp combinations, contact Metav Werkzeuge for application support and order placement.

Technical data

• Article number: 6785698
• Manufacturer SKU: TUN6785698
• Type designation: CNMG120412
• Brand: Tungaloy
• Material: Carbide

Facts

• Corner radius: 1.2 mm
• Thickness: 4.76 mm
• Inscribed circle / size: 12 mm
• Included angle: 80°
• Clearance angle: 0°
• Mounting: with cylindrical hole

Special features

• Grade/coating: T9205, CVD‑coated carbide
• Chipbreaker: double‑sided
• Shape: rhomboid (CNMG)
• Application: turning (external and internal)
• ISO‑standard insert series: ISO turning indexable inserts

FAQ

What materials is this insert intended for?
The CNMG120412 T9205 insert is primarily intended for machining steel and is optimised for productive turning under stable cutting conditions.

How is the insert mounted in the toolholder?
The insert uses a cylindrical hole for clamping; correct seating requires a compatible holder with matching form, tolerance and clamping geometry for the CNMG120412 format.

What advantages does the T9205 grade offer?
The T9205 CVD‑coated carbide provides enhanced wear resistance at higher cutting speeds, supporting longer tool life and stable performance in serial production.

Can the insert be indexed to use the second cutting edge?
Yes, the insert is double‑sided, allowing the unused side to be indexed for extended service life and economical edge usage.

Is this insert suitable for finishing and semi‑finishing operations?
With an R 1.2 mm corner and the provided chipbreaker geometry, the insert is suitable for both semi‑finishing and many finishing passes, depending on cutting parameters and workpiece material.

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.