CNMG 120412 T5115 Wendeplatten - Tungaloy

Take advantage of a CVD-coated cemented carbide grade that balances wear resistance and edge stability for productive cast-iron turning, combined with the ISO CNMG120412 form for broad holder compatibility; order genuine inserts or request application advice from Metav Werkzeuge.

CNMG120412 T5115 CNMG turning insert (Tungaloy) — CVD-coated carbide, 80° rhombic

The CNMG120412 T5115 is an ISO rhombic, CVD-coated cemented carbide turning insert designed for efficient external and internal turning, optimised for cast-iron applications.

• CVD-coated carbide grade T5115
• For productive cast-iron turning
• 80° rhombic geometry with 1.2 mm radius
• Double-sided chipbreaker, cylindrical hole
• ISO CNMG120412 — ISO-compatible form

Engineered for productive cast-iron turning

The combination of a CVD-coated surface and a balanced carbide substrate provides a reliable compromise between abrasion resistance and edge robustness. This grade is described as a universal solution for cast iron, enabling consistent chip control when paired with the appropriate chipbreaker and cutting parameters. The rhombic geometry with an 80° approach angle reduces cutting forces in many external and internal turning tasks, which contributes to longer tool life and stable process windows.

Compatibility and system integration for reliable machining

Compatibility with toolholders is determined by the insert's form, relief angle, tolerance class, attachment and thickness; the ISO designation guarantees that CNMG120412 fits standard ISO CNMG holders when the holder matches the insert’s dimensions. The presence of a cylindrical locating hole and a 4.76 mm plate thickness supports secure clamping and repeatable positioning in a typical insert assembly consisting of holder, shim and clamping screw.

Consistent chip control and edge stability for repeatable results

The double-sided chipbreaker design and the T5115 grade work together to produce predictable chips and surface finishes on a wide range of grey and nodular cast irons. Improved chip shaping reduces downtime caused by entanglement and eases chip evacuation in both batch and continuous turning operations. The insert’s 1.2 mm corner radius helps to moderate cutting edge engagement, which is beneficial for medium-duty machining where a compromise between strength and surface finish is required.

Practical guidance for selection and handling

When selecting an insert for a specific job, prioritise the correct chipbreaker and the right grade for cast iron; stable setup and correct feeds and speeds will leverage the insert’s durability. Inserts are reversible where applicable, allowing use of both cutting edges to maximise economy per index. For critical programmes, pairing this rhombic insert with a suitably rated external holder and verifying runout and clamping torque will improve consistency in production.

For tailored holder recommendations or to secure a supply of genuine Tungaloy CNMG120412 T5115 inserts, contact Metav Werkzeuge via info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: 6850140
• Manufacturer SKU: TUN6850140
• SKU: 6850140-Tungaloy
• Article name: CNMG120412 T5115 Tungaloy insert

Facts

• Geometry angle: 80°
• Corner radius: 1.2 mm
• Plate thickness: 4.76 mm
• Inscribed circle/size: 12
• Relief angle: 0°
• Hole: with hole

Special features

• CVD-coated cemented carbide
• Universal grade for cast iron (T5115)
• ISO CNMG120412 rhombic form
• Double-sided chipbreaker
• Cylindrical locating hole
• ISO-standard insert for turning

FAQ

What materials is this insert suitable for?
The T5115 grade is designed as a universal solution for cast iron machining; the CNMG120412 T5115 insert performs best when used on grey and nodular cast irons with matching cutting data.

Which toolholders are compatible with this geometry?
Compatibility is based on the ISO CNMG120412 form: holders and boring bars that accept CNMG inserts and match the plate thickness, locating hole style and relief angle will fit the Tungaloy insert.

How does the T5115 grade affect tool life and surface finish?
T5115’s CVD coating improves wear resistance and the balance between edge stability and abrasion performance, supporting longer tool life and consistent surface quality in standard turning operations.

Is the insert reversible and how many cutting edges are available?
The CNMG120412 is double-sided with a double-sided chipbreaker, allowing the use of multiple cutting edges; correct indexing and clamping ensure repeatable placement and performance.

What parameters improve chip control with this insert?
Selecting the appropriate feed, depth of cut and matching the double-sided chipbreaker to the workpiece material will produce controlled chips and reduce the risk of entanglement in both short and long turning cycles.

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.