CNMG 120408 T515 Wendeplatten - Tungaloy

Take advantage of the combination of a CVD-coated carbide grade designed for economical cast iron machining, precise 80° geometry and a compact 0.8 mm corner radius for consistent surface quality and stable cutting. Order directly via Metav Werkzeuge or ask the consultants for application guidance.

CNMG 120408 T515 Turning insert — CVD-coated carbide, 80° geometry (Tungaloy)

A CNMG 120408 T515 ISO turning insert engineered for efficient external and internal turning, optimised for cast iron machining in ISO-compatible holders.

• CVD-coated carbide grade T515
• Optimised for cast iron machining
• 80° geometry with 0.8 mm corner radius
• Double-sided chipbreaker with cylindrical hole

High productivity for cast iron turning

The insert is supplied in a CVD-coated carbide grade optimised for economical machining of cast iron, offering a reliable balance between wear resistance and toughness. The T515 specification indicates a coating and substrate combination chosen to maintain a stable cutting edge in continuous and semi-continuous cuts. In practice, this results in fewer tool changes and longer tool life compared with uncoated alternatives, while the integrated chip control assists in maintaining consistent material removal rates and surface finish during turning operations.

Stable geometry and ISO compatibility for predictable results

Built to the ISO geometry standard for rhombic CNMG inserts, the component features an 80° cutting angle and 0.8 mm corner radius that favour good edge strength and repeatable cutting behaviour. The 0° clearance specification and the rhombic plate form contribute to a neutral cutting action suitable for a broad range of turning set-ups; the neutral rake geometry helps when a rigid machine setup and stable workholding are present. Compatibility with standard external holders and boring bars is defined by form, tolerance class, fixing method and plate dimensions, ensuring straightforward integration into existing tool systems.

Reduced downtime and easier process control

The double-sided chipbreaker design and the with hole mounting style enable reliable clamping and indexed reuse of fresh cutting edges, supporting uninterrupted production runs. The 4.76 mm plate thickness and the standard 12 mm size offer mechanical stability under moderate cutting forces, reducing vibration and improving surface finish. For interrupted cuts or unstable setups, selecting the correct chipbreaker and ensuring sufficient rigidity in the toolholder and workpiece will extend performance and reduce the risk of edge chipping.

Practical guidance for tooling and application

This insert is intended for turning operations and is particularly suited to cast iron when combined with the appropriate chipbreaker type and machine stability. The system comprises the ISO insert, a matching external holder or boring bar, the corresponding shim/clamp set and replacement screws. For best results, match the grade and chipbreaker to the workpiece material and cutting conditions: the T515 grade is a productive choice where consistent chip control and cost-effective edge life are required. For setups involving interrupted cuts or unstable supports, choose holders and clamping that increase rigidity to preserve the insert’s service life.

For tailored application advice on the Tungaloy CNMG 120408 T515 insert and to confirm holder compatibility, contact Metav Werkzeuge — eMail: info@metav-werkzeuge.com or phone: +49 2822 7131930.

Technical data

• Article number: 6747812
• Manufacturer SKU: TUN6747812
• Stock SKU: 6747812-Tungaloy
• Material: Carbide
• Grade/coating: T515 (CVD-coated)
• Model series: ISO turning indexable inserts
• Application: Turning

Facts

• Size: 12 mm
• Thickness: 4.76 mm
• Corner radius: 0.8 mm
• Plate form: Rhombic
• Cutting angle: 80°
• Clearance angle: 0°

Design and features

• Double-sided chipbreaker
• Cylindrical hole (with hole)
• ISO-compatible geometry
• Suitable for cast iron machining
• CVD coating

FAQ

Is this insert suitable for machining cast iron?
Yes. The CNMG 120408 T515 insert is specifically graded and coated for economical and productive cast iron machining, with the T515 CVD coating designed to improve wear resistance during turning.

Which holders fit this ISO insert?
The insert fits standard ISO CNMG holders; compatibility depends on matching form, tolerance class, fixing method, size and thickness. Use ISO-compatible external holders or boring bars for correct clamping and performance.

What does the double-sided chipbreaker mean for usage?
The double-sided chipbreaker provides consistent chip control and allows indexing to a new cutting edge, reducing downtime and improving process stability when used with a suitable holder.

How does the 0.8 mm corner radius affect machining?
A 0.8 mm corner radius improves edge robustness and helps achieve a consistent surface finish while offering a compromise between strength and sharpness for general turning tasks.

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.