CNMG 120404 T515 Wendeplatten - Tungaloy

Take advantage of a CVD‑coated carbide grade engineered for efficient cast‑iron turning, combined with stable chip control and simple insert indexing for minimal downtime. Order directly via Metav Werkzeuge or consult the technical team for application support.

CNMG 120404 T515 ISO CNMG120404 turning insert for Turning — Tungaloy

The CNMG120404 T515 is an ISO‑standard, rhombic turning insert designed for economical and reliable external and internal turning of cast iron, featuring a CVD‑coated carbide grade and a double‑sided chipbreaker.

• CVD‑coated carbide for cast iron machining
• Double‑sided chipbreaker for consistent chips
• 80° rhombic geometry with 0.4 mm nose radius
• Central cylindrical hole for secure clamping

High productivity for cast‑iron turning without compromise

The CVD‑coated cemented carbide grade delivers a balance between wear resistance and toughness, making it suitable for the economic machining of cast iron. The coating reduces crater wear at elevated temperatures, which extends the effective tool life and lowers the frequency of insert changes. For production environments aiming to keep throughput high, this combination of substrate and coating provides a cost‑effective solution while maintaining consistent surface quality on turned components.

Reliable chip control and edge stability for predictable results

Equipped with a double‑sided chipbreaker, the insert ensures controlled chip formation under a variety of cutting conditions. Controlled chips reduce interruptions at the machine and improve operator safety, while the stable cutting edge helps maintain dimensional accuracy over extended runs. The moderately small 0.4 mm nose radius offers a compromise between fine surface finish and robust edge strength, meaning fewer rejects and smoother post‑process handling.

Clear compatibility and secure clamping to simplify setup

The insert follows ISO CNMG geometry, so compatibility with standard external holders and boring bars is determined by form, relief angle, tolerance class, fixing method, size and thickness. The insert’s central cylindrical hole and standardised dimensions make replacement straightforward and reproducible, reducing set‑up time and ensuring repeatable clamping torque and seat contact for stable machining across batches.

Practical workshop guidance for optimal use

For general turning of cast iron, select a cutting speed and feed rate that match the workpiece stability and surface finish requirements; the combination of CVD coating and the double‑sided chipbreaker permits flexible parameter windows. Where interrupted cuts or unstable set‑ups occur, prioritise lower cutting depths and increase machine rigidity to exploit the grade’s toughness. The insert’s rhombic form and 80° approach angle facilitate both external profiling and light finishing passes with a predictable tool life.

For application advice or immediate availability of Tungaloy CNMG120404 T515 inserts, contact Metav Werkzeuge for technical consultation and stock information — info@metav-werkzeuge.com / +49 2822 7131930

Technical data

• Article number: 6779839

• SKU: 6779839-Tungaloy

• Manufacturer item number: 6779839

• Model series: ISO turning indexable inserts

Facts

• ISO designation: CNMG120404

• Size: 12 mm

• Thickness: 4.76 mm

• Nose radius: 0.4 mm

• Approach angle: 80°

• Relief angle: 0°

Special features

• Material: cemented carbide

• Coating: CVD‑coated carbide (T515 grade)

• Chipbreaker: double‑sided chipbreaker

• Shape: rhombic insert

• Hole: central cylindrical hole

• Application: Turning (external and internal)

FAQ

Which materials is this insert primarily designed for?
The CNMG120404 T515 insert is designed primarily for machining cast iron; the CVD‑coated carbide grade provides the wear resistance and toughness suited to that material.

How many usable edges does the insert provide?
With its double‑sided design, the indexable insert offers multiple cutting edges; the CNMG form allows rotation to fresh edges for extended service life.

Is the insert compatible with standard CNMG holders?
Yes, the ISO CNMG120404 designation ensures compatibility with standard CNMG external holders and boring bars when matching form, thickness and clamping method.

What benefit does the 0.4 mm nose radius give?
A 0.4 mm nose radius balances edge strength and surface finish, enabling both stable roughing passes and acceptable finishes without excessive tool stress.

How does the CVD coating influence performance?
The CVD coating on the T515 grade improves resistance to high‑temperature wear and helps maintain a stable cutting edge during continuous cast‑iron turning.

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.