CNMG 120412 T9225 Wendeplatten - Tungaloy

Take advantage of the CVD-coated T9225 grade and a 1.2 mm corner radius for reliable medium-to-heavy steel turning; order the CNMG120412 ISO indexable inserts from Metav Werkzeuge or consult their specialists for matching holder recommendations and fast delivery.

CNMG120412 T9225 — CNMG ISO rhombic indexable insert for turning by Tungaloy, CVD-coated carbide, 80° cutting geometry

The CNMG120412 is an ISO-format rhombic indexable insert designed for external and internal turning, offering a robust universal grade for variable engagement conditions and interrupted cuts.

• ISO CNMG geometry, 80° cutting edge
• CVD-coated carbide grade T9225 for steel
• 1.2 mm corner radius for robust cutting
• Double-sided insert with cylindrical hole

Longer tool life and consistent performance for medium-to-heavy steel machining

The CVD-coated T9225 grade combines a wear-resistant coating with a tough carbide substrate to balance hardness and fracture resistance. This composition delivers improved tool life where cutting conditions change or light interruptions occur, because the coating reduces abrasive wear while the substrate maintains edge stability. For process planners, the result is predictable performance during longer production runs and fewer unscheduled tool changes, which supports higher machine uptime and more consistent part quality.

Clear compatibility criteria reduce set-up uncertainty at the machine

Compatibility with a holder is governed by the ISO geometry, relief angle (0°), tolerance class, clamping method, size and thickness. The insert’s 4.76 mm thickness, 12 mm inscribed size and rhombic form match standard CNMG seats; the cylindrical hole supports secure clamping in many conventional toolholders. Specifying holders that conform to these parameters ensures correct seating and torque distribution, which reduces the risk of chipping and stabilises cutting forces — a decisive factor when switching between different machines or clamping systems.

Practical machining advantages: chip control, reversibility and application scope

The insert’s double-sided design and integrated chipbreaker concept provide economical indexability and consistent chip control under varying cutting depths. For shopfloor engineers, this means fewer insert changes and simplified inventory management, while the 1.2 mm corner radius supports robust engagement for shoulder and heavy turning passes without sacrificing surface finish. Intended for turning steel components, the geometry and grade suit both external and internal operations where reliable edge strength and repeatability are priorities.

For reliable medium-to-heavy steel turning with Tungaloy’s T9225 grade, contact Metav Werkzeuge for tailored holder recommendations and prompt supply by email at info@metav-werkzeuge.com or phone on +49 2822 7131930

Technical Data

• Manufacturer: Tungaloy
• Manufacturer article number: 6796029
• Manufacturer SKU: TUN6796029
• Model series: ISO turning indexable inserts
• Geometry designation: CNMG120412

Facts

• Cutting angle: 80°
• Corner radius: 1.2 mm
• Thickness: 4.76 mm
• Size: 12 (inscribed circle)
• Relief angle: 0°

Special features

• CVD-coated carbide grade T9225
• Double-sided with double-sided chipbreaker
• Cylindrical hole for clamping
• Rhombic plate form for CNMG holders
• Intended application: Turning (external and internal)
• Robust universal grade for medium-to-heavy steel and interrupted cuts

FAQ

What materials is this insert suitable for?
The CNMG120412 T9225 indexable insert by Tungaloy is optimised for medium-to-heavy steel machining; the CVD-coated T9225 grade provides toughness for variable engagement and light interruptions.

Which holders are compatible with the CNMG120412 insert?
Compatibility requires a holder designed for CNMG geometry with matching seat form, clamping method, tolerance class, 0° relief accommodation, and dimensions for a 12-size, 4.76 mm thick insert; confirm the holder matches these parameters.

Is the insert reversible and does it have a chipbreaker?
Yes, the insert is double-sided and features a chipbreaker on both faces, enabling indexable reversibility and extended tool life before replacement.

What operations is this insert intended for?
The CNMG120412 Tungaloy insert is intended for external and internal turning, where a robust edge and good chip control are required for medium-to-heavy steel work.

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.