CNMA 120412 T515 Wendeplatten - Tungaloy

Efficient, cost‑effective machining of cast iron is achieved by combining the CVD‑coated carbide T515 with a robust 1.2 mm corner radius and an ISO‑standard rhombic form; compatible holders and correct clamping ensure repeatable results. Order the insert directly via Metav Werkzeuge or contact their technical advisors for application support.

CNMA120412 T515 CNMA – ISO turning insert, CVD‑coated carbide for turning by Tungaloy

A CNMA120412 T515 indexable turning insert designed for economical and reliable cast‑iron turning in ISO turning systems.

• CVD-coated carbide for cast iron machining
• ISO-form CNMA 80° rhombic insert
• 1.2 mm corner radius for reliable edge strength
• Compatible with ISO holders; cylindrical hole

Increased productivity for cast‑iron turning through a durable grade

The CVD-coated carbide grade T515 was developed to combine low operating costs with stable chip formation when machining cast iron. The hard, wear‑resistant coating reduces flank wear under prolonged cutting, while the substrate provides fracture resistance; together they extend tool life and reduce tool change frequency. For production environments where consistency and machining economy matter, the grade offers a balance between cutting speed and tool life, enabling higher throughput without compromising surface finish. The result is a predictable process and improved part‑to‑part repeatability.

Secure seating and predictable clamping for consistent results

The rhombic plate geometry with an 80° included angle and a cylindrical hole ensures straightforward clamping in compatible ISO holders. Compatibility is defined by form, free angle, tolerance class, fastening method, size and thickness, so the seat and screw must match the holder specification. With a plate thickness of 4.76 mm and a 0° clearance angle, the insert provides axial and radial stability in standard external holders or boring bars. These dimensional characteristics contribute to vibration resistance and dimensional accuracy during turning operations.

Edge strength and process stability for repeatable machining

A 1.2 mm corner radius offers robust edge strength for a range of cutting depths and interrupted cuts, helping to avoid premature edge chipping. The insert is supplied without a chipbreaker, which makes it suitable where specific chip control strategies are chosen according to workpiece material, machining type and machine stability. Selecting an appropriate chipformer or choosing a matching holder geometry will optimise chip evacuation and surface quality. Together, these factors help to achieve consistent cycle times and reduce scrap rates.

System integration and practical handling in the workshop

The ISO system build consists of the indexable insert, a matching external holder or boring bar, a shim/clamp set and spare screws; this insert integrates directly into that system architecture. The CVD coating on carbide provides robustness for both continuous and mildly interrupted cuts when applied within recommended cutting parameters. Spare inserts are simple to replace, and the standardised dimensions support fast changeovers, keeping machines running and reducing idle time between operations. For tailored setup information and holder recommendations, technical consultation is available.

Contact Metav Werkzeuge to specify holders and fastening details for Tungaloy CNMA120412 T515 inserts or to arrange an order and application consultation.

Technical data

• Article number: 6733823
• SKU: 6733823-Tungaloy
• Manufacturer SKU: TUN6733823
• Model series: ISO turning inserts
• Material: carbide
• Grade / coating: T515, CVD-coated carbide
• Shape: rhombic (CNMA)

Numbers / Core technical data

• Size: 12 mm
• Thickness: 4.76 mm
• Corner radius: 1.2 mm
• Included angle: 80°
• Clearance angle: 0°

Special features

• Cylindrical hole (with hole)
• No chipbreaker (without)
• ISO designation: 120412
• Designed for turning (external and internal)
• Compatibility dependent on form, free angle, tolerance class and fastening

FAQ

Is this insert suitable for machining cast iron?
Yes. The CNMA120412 T515 indexable turning insert from Tungaloy is specifically designed for economical machining of cast iron, combining a CVD coating with a carbide substrate for improved wear resistance.

What holders are compatible with this CNMA insert?
Compatibility is determined by form, free angle, tolerance class, fastening, size and thickness; use holders specified for CNMA 120412 geometry and the appropriate clamping set for secure fixation.

Can the insert be used for interrupted cuts?
The grade and geometry allow use in interrupted cuts when machine and setup stability are sufficient; the 1.2 mm corner radius adds edge strength, but selection of holder and cutting parameters should reflect the application.

Is a chipbreaker included with this insert?
This variant is supplied without a chipbreaker; chip control should be addressed by selecting a suitable chipformer or an alternative insert style if dedicated chipbreaking is required.

What is the manufacturer article number and SKU for reordering?
Manufacturer article number 6733823, SKU 6733823-Tungaloy, Manufacturer SKU TUN6733823 are provided for ordering and stock management.

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.