CNMG 120412 T9225 Wendeplatten - Tungaloy

Take advantage of the combination of CVD-coated carbide toughness, ISO-standard geometry and secure clamping for dependable medium to heavy steel turning; order the insert directly via Metav Werkzeuge or contact the consultants for application advice.

CNMG120412 T9225 CNMG turning insert – CVD-coated carbide, 80° rhombic (Tungaloy)

The CNMG120412 T9225 is an ISO-standard turning insert for external and internal turning, designed as a robust universal grade for medium to heavy steel machining with a resilient CVD coating.

• CVD-coated carbide grade T9225
• 80° rhombic geometry with 1.2 mm nose radius
• Double-sided chipbreaker, cylindrical hole
• 4.76 mm plate thickness for secure clamping

Consistent cutting performance through a high‑quality CVD coating

The central advantage of the CNMG120412 T9225 lies in its CVD-coated carbide substrate, which combines surface hardness with core toughness. The T9225 grade is formulated for medium to heavy steel applications where variable engagement or light interruptions demand increased fracture resistance. This results in longer tool life under fluctuating conditions and fewer insert changes, supporting steady production cycles and predictable maintenance intervals. The coating also improves wear resistance and helps maintain edge geometry for consistent component quality.

ISO geometry that simplifies toolholder matching and inventory

Adherence to the ISO CNMG format ensures straightforward compatibility with standard external holders and boring bars; compatibility is controlled by form, clearance angle, tolerance class, clamping arrangement, size and thickness. The 80° rhombic shape and 4.76 mm plate thickness facilitate reliable clamping and allow reversible use thanks to the double-sided design. The cylindrical locating hole provides positive seating, reducing setup variability and enabling repeatable positioning when changing inserts, which supports faster tool changes and reduced downtime.

Stable cutting edge and improved surface finish with 1.2 mm nose radius

A 1.2 mm nose radius offers a practical compromise between edge strength and surface quality for many turning operations. The larger radius contributes to process stability, absorbing minor variations in feed and depth of cut while reducing the tendency to produce chatter on semi-rigid setups. When matched with the appropriate chipbreaker and cutting parameters, this geometry promotes a consistent surface finish and repeatable dimensional accuracy across batches, making it well suited to both single-part machining and small-series production.

System-level guidance for practical implementation

In practice, the insert functions as part of a system: an ISO insert, a compatible external holder or boring bar, a shim/seat and the appropriate clamping screw. Selecting the double-sided chipbreaker and the T9225 grade according to workpiece material and stability of the setup yields the best results. For heavily interrupted cuts or unstable setups, the T9225 grade’s enhanced toughness is beneficial; for purely finish-critical work, consider optimising feeds and speeds to complement the insert’s geometry. The ISO-series designation simplifies stock management and allows straightforward substitution within the same holder family.

For Tungaloy reliability and CVD-coated performance, contact Metav Werkzeuge for stock availability and tailored machining recommendations at info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: 6780663

• Manufacturer SKU: TUN6780663

• SKU: 6780663-Tungaloy

Numbers / Core technical data

• Plate designation: CNMG120412

• Plate size: 12 mm

• Plate thickness: 4.76 mm

• Nose radius: 1.2 mm

• Clearance angle: 0°

• Main angle: 80°

Designs / Special features

• Material: carbide

• Coating: CVD-coated

• Grade: T9225

• Plate shape: rhombic

• Hole: with cylindrical hole

• Chipbreaker: double-sided

• Model series: ISO turning inserts

• Application: turning (external and internal)

FAQ

What materials is this insert suitable for?
The CNMG120412 T9225 insert is specified for medium to heavy steel machining; the T9225 grade delivers the toughness required for varying engagement and lightly interrupted cuts.

How does the CVD coating benefit production?
A CVD-coated carbide insert like this one provides improved wear resistance and edge stability, which extends service life and supports consistent component quality during longer production runs.

Will this insert fit existing CNMG toolholders?
Yes; the ISO CNMG geometry, 80° rhombic form and defined thickness ensure compatibility with standard CNMG external holders when the holder matches size, clearance and clamping specifications.

Can the insert be used on internal turning?
The insert is suitable for both external and internal turning when installed in appropriate boring bars or holders compatible with CNMG inserts.

Is the insert reversible and what advantage does that offer?
The double-sided insert design permits rotation to a fresh cutting edge, effectively doubling the available edges and reducing inventory turnover time for replacements.

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.