CNMG 120412 T515 Wendeplatten - Tungaloy

Reliable chip control, durable CVD-coated carbide and ISO compatibility combine to deliver efficient, repeatable cast-iron turning with reduced tool changes; benefit from consistent tool life and stable process windows. Order original Tungaloy inserts via Metav Werkzeuge or consult our application specialists for tailored advice.

CNMG120412 T515 indexable turning insert — CVD-coated carbide, 80° rhombic, 1.2 mm corner radius

CNMG120412 T515 is an ISO-standard rhombic indexable insert designed for economical external and internal turning of cast iron

• CNMG 80° rhombic insert, ISO format
• CVD-coated carbide grade T515
• 1.2 mm corner radius for robustness
• Double-sided chipbreaker, with central hole

Economic performance for cast-iron turning with proven grade

The CVD-coated carbide grade T515 is formulated for the economical machining of cast iron, offering a balance between cutting speed and tool life. As an ISO-format rhombic insert, this item provides a predictable cutting edge geometry that simplifies tool selection and inventory. By choosing a grade optimised for grey and nodular cast irons, the insert promotes stable edge life and reduces the frequency of index changes, which in turn lowers downtime and improves overall machining throughput. The combination of coating and substrate supports moderate to high cutting speeds while preserving flank wear performance.

Stable cutting and secure clamping for repeatable results

The insert features an 80° rhombic profile with a 1.2 mm corner radius, designed to withstand interrupted cuts and moderate radial engagement. The double-sided chipbreaker enhances chip formation and evacuation, reducing the risk of build-up on the rake face and helping to protect the cutting edge. Compatibility with the toolholder depends on form, clearance angle, tolerance class, fastening method, size and thickness; the system typically comprises an ISO insert, a matching external holder or boring bar, an underlay/shim or clamp set and replacement screws. The central cylindrical hole ensures stable axial clamping and repeatable positioning in many ISO clamping systems.

Practical integration and application guidance for workshop use

For efficient implementation, pair the insert with a holder that matches the ISO seat and torque specifications so the clamping force distributes evenly over the insert seat. Select the chipbreaker and grade according to workpiece stability, interrupted or continuous cutting and desired cutting speed; the indexable insert concept allows two cutting edges per side, offering cost-effective edge utilisation. When machining cast iron, prioritise chip control and maintain a stable feed to exploit the insert’s thermal and mechanical robustness. For complex setups or uncertain material mixes, discuss parameter windows and holder compatibility with an application specialist to ensure process reliability.

For reliable cast-iron turning with original Tungaloy quality, request CNMG120412 T515 through Metav Werkzeuge or contact our technical team at info@metav-werkzeuge.com or +49 2822 7131930 for application support and selection guidance.

Technical data

• Article number: 6793687
• SKU: 6793687-Tungaloy
• Manufacturer SKU: TUN6793687
• Model series: ISO indexable turning inserts
• Designation: CNMG120412
• Manufacturer: Tungaloy
• Material: carbide

Facts

• Cutting angle: 80°
• Corner radius: 1.2 mm
• Insert size: 12 mm
• Thickness: 4.76 mm
• Relief angle: 0°
• Manufacturer article number: 6793687

Special features

• CVD-coated carbide (T515)
• Double-sided chipbreaker
• With cylindrical hole
• ISO-standard rhombic form
• System: mating holder, underlay/clamp set and replacement screws
• Application: economical machining of cast iron
• Use for external and internal turning

FAQ

What materials is this insert suited for?
The CNMG120412 T515 insert is designed primarily for economical machining of cast iron; its CVD-coated carbide grade T515 offers balanced wear resistance and cutting performance for grey and nodular cast irons.

What does the grade T515 indicate?
T515 denotes a CVD-coated carbide grade optimised for cast-iron applications, combining a wear-resistant coating with a carbide substrate to extend edge life under typical turning conditions.

How is holder compatibility determined?
Compatibility relies on form, clearance (relief) angle, tolerance class, fastening method, insert size and thickness; the insert is intended for ISO-standard holders and requires matching seat geometry and clamping hardware.

Is the insert single- or double-sided and how is it clamped?
This CNMG-format insert is double-sided and uses a central cylindrical hole for axial clamping, allowing two usable cutting edges per side in a suitable ISO clamping system.

Can this insert cope with interrupted cuts?
Yes; the 1.2 mm corner radius and robust grade support interrupted cuts, though selection of holder rigidity and cutting parameters should reflect the specific machining conditions.

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.