CNMG 120412 T515 Wendeplatten - Tungaloy

The combination of CVD‑coated carbide (T515) and a double‑sided chipbreaker delivers efficient material removal and reliable chip control in cast iron turning; order the CNMG120412 directly via Metav Werkzeuge or consult our specialists for application-specific recommendations.

CNMG 120412 T515 indexable insert for turning (Tungaloy) — CVD‑coated carbide, 1.2 mm radius

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

• CVD‑coated carbide grade T515 for cast iron
• Double‑sided chipbreaker for secure chip control
• Rhombic CNMG form with cylindrical hole
• 1.2 mm corner radius for robust edge strength

Precise, economical cutting performance for cast iron

The CNMG120412 combines a CVD‑coated carbide substrate with the T515 grade to provide a balance of wear resistance and cost efficiency for cast iron machining. CVD coating increases resistance to thermal and abrasive wear, which extends edge life under interrupted and continuous cuts. The result is predictable tool life and fewer index changes, translating into lower tooling cost per part and steadier cycle times in series turning operations.

Stable chip control and surface consistency

A double‑sided chipbreaker integrated into the geometry promotes consistent chip formation and evacuation, reducing the risk of built‑up edge and improving process stability. The rhombic CNMG shape and cylindrical hole ensure dependable clamping and repeatability in ISO‑compatible external holders; geometric parameters such as the 80° included angle and 0° relief contribute to controlled cutting forces and a reliable datum for finishing cuts. Improved chip flow yields better surface quality and less secondary deburring.

Simple integration and predictable handling in production

With an inscribed circle of 12 mm, a thickness of 4.76 mm and a corner radius of 1.2 mm, this grade is sized for robust finishing and medium‑roughing steps. The insert is double‑sided, effectively doubling available cutting edges and lowering cost‑per‑edge. Compatibility is defined by form, relief angle, tolerance class, clamping style and thickness, so correct holder selection is essential for optimal performance. For interrupted cuts or unstable setups, choose the appropriate chipbreaker and cutting parameters aligned with the T515 grade.

Contact Metav Werkzeuge for tailored application advice and stock availability of the CNMG120412 T515 insert — email info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: 6747823
• Manufacturer SKU: TUN6747823
• SKU: 6747823-Tungaloy
• Designation: CNMG120412
• ISO code: 120412
• Type: CNMG
• Grade: T515
• Material: carbide
• Shape: rhombic
• Hole: with hole (cylindrical)
• Thickness: 4.76 mm

Facts

• Corner radius: 1.2 mm
• Relief angle: 0°
• Inscribed circle (size): 12 mm
• Included angle: 80°

Special features

• CVD‑coated carbide (T515)
• Suitable for cast iron turning
• Double‑sided chipbreaker
• ISO‑standard turning insert system
• Rhombic form with cylindrical hole
• Economical edge utilisation

FAQ

What materials is this insert best suited for?
The CNMG120412 T515 insert is specified for economical machining of cast iron; the T515 grade and CVD‑coating favour stable cutting in grey and nodular cast irons.

How does the double‑sided chipbreaker affect tool life?
A double‑sided chipbreaker on the CNMG120412 improves chip control and allows use of both sides, effectively extending the usable life per index and reducing tooling cost per component.

What is the corner radius and why does it matter?
This insert has a 1.2 mm corner radius; a larger radius increases edge strength and improves stability in medium‑depth cuts, helping to avoid premature chipping.

Which holders are compatible with the rhombic CNMG form?
ISO‑compatible external holders and boring bars that accept CNMG‑form inserts with the matching hole and thickness are compatible; clamping must suit the rhombic geometry and tolerance class.

How many cutting edges are available per insert?
Being double‑sided, the CNMG120412 provides multiple usable edges per index; exact edge count depends on insert orientation and whether both faces are indexed during use.

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.