CNMG 120412 T9225 Wendeplatten - Tungaloy

Take advantage of the T9225 CVD-coated carbide grade combined with the CNMG120412 geometry for robust performance in medium to heavy steel turning; compatibility with ISO holders and a secure clamping system ensures stable productivity. Order directly via Metav Werkzeuge or request application advice from our technical consultants.

CNMG120412 T9225 turning insert by Tungaloy — robust CVD-coated carbide for turning

CNMG120412 T9225 is an ISO‑standard indexable insert for general turning, engineered for medium to heavy steel machining where intermittent cuts or varying engagement demand increased toughness and reliable edge stability.

• CNMG120412 geometry for versatile turning
• T9225 CVD-coated carbide for medium-heavy steel
• Double-sided chipbreaker for interrupted cuts
• Rhombic insert with 1.2 mm corner radius

Reliable performance for medium-to-heavy steel turning

The CNMG120412 insert is specified in a T9225 grade that combines a wear-resistant CVD coating with a tough carbide substrate, optimised for medium to heavy steel applications. This pairing delivers a balance between edge stability and fracture resistance, so tool life remains predictable even under variable engagement. As a result, throughput and process reliability improve, making the insert suitable for productive roughing and semi-finishing operations where consistent material removal is essential.

Consistent chip control for interrupted and variable cuts

A double-sided chipbreaker is integrated to manage chips effectively across a range of cutting conditions. In practice, the breaker reduces the risk of long, stringy chips and supports stable evacuation when dealing with interrupted cuts, improving surface quality and reducing secondary handling. The combination of chip geometry and the CVD surface treatment enhances chip control, which translates into longer uninterrupted runs and fewer machine stops for cleaning or rework.

Designed for secure, ISO‑compatible assembly and repeatable results

The insert complies with ISO form and dimensions, allowing mounting in standard ISO-compatible holders. Compatibility with a holder depends on form, 0° clearance, tolerance class, fastening method, size and 4.76 mm thickness, so pairing with a matching external holder or boring bar and the correct shim/clamp set is essential for achieving repeatable concentricity. The 80° main cutting angle and 1.2 mm radius support robust engagement and permit higher depths of cut than sharper radii, improving material removal rates where rigidity allows.

Practical range of uses and predictable tool life

With a rhombic plate shape and a cylindrical hole for secure fastening, the insert is double-sided and can be indexed to present a fresh cutting edge, lowering running costs per part. The CVD-coated carbide substrate provides surface protection and thermal resistance, which helps maintain the cutting edge during longer cycles. The insert forms part of a simple system: an ISO insert, matching external holder or boring bar, shims/clamps and replacement screws — a configuration that supports straightforward inventory and rapid replacement on the shop floor.

For application support or to check stock and compatibility with existing toolholders, contact Metav Werkzeuge — email info@metav-werkzeuge.com or call +49 2822 7131930 for expert advice on Tungaloy T9225 inserts and system recommendations.

Technical data

• Article number: 6780757
• Manufacturer SKU: TUN6780757
• SKU: 6780757-Tungaloy
• Model series: ISO turning inserts
• Material: carbide
• Coating: CVD

Numbers / Core technical data

• Corner radius: 1.2 mm
• Plate thickness: 4.76 mm
• Plate size: 12
• Main cutting angle: 80°
• Clearance angle: 0°

Special features / Versions

• Designation: CNMG120412
• Grade: T9225
• Plate form: rhombic
• Hole: with cylindrical hole
• Chipbreaker: double-sided
• Intended use: turning (external and internal)
• System components: ISO insert, external holder/boring bar, shim/clamping set, replacement screws

FAQ

What materials is this insert designed for?
The Tungaloy CNMG120412 T9225 insert is optimised for medium to heavy steel machining; the CVD-coated carbide substrate provides wear resistance for demanding steel turning tasks.

Is the insert compatible with standard ISO holders?
Yes. The CNMG120412 geometry adheres to ISO dimensions; compatibility depends on holder form, clearance, tolerance class, fastening and plate thickness (4.76 mm), so a matching ISO holder is required.

Can this insert cope with interrupted cuts?
The double-sided chipbreaker and the tough T9225 grade are designed to handle intermittent engagement and variable cutting conditions effectively.

How does the 1.2 mm radius affect cutting performance?
A 1.2 mm corner radius increases edge robustness and allows higher depths of cut compared with smaller radii, improving material removal when machine and setup rigidity permit.

What is the manufacturer article number and SKU for ordering?
Manufacturer article number 6780757; SKU 6780757-Tungaloy; Manufacturer SKU TUN6780757.

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.