CNMG 120412 T5115 Wendeplatten - Tungaloy

Benefit from a cost-effective, CVD-coated carbide insert that combines wear resistance and edge stability for reliable machining; order the insert directly via Metav Werkzeuge or consult our specialists for application advice.

CNMG120412 T5115 indexable turning insert – Tungaloy, CVD-coated carbide, 80° rhombic

The CNMG120412 T5115 is an ISO-standard indexable insert designed for general turning applications, offering a universal grade tailored to cast iron with a balance of wear resistance and cutting-edge stability.

• CVD-coated carbide T5115
• Universal grade for cast iron
• Double-sided chipbreaker
• ISO CNMG120412, rhombic form

Efficient wear control for longer tool life

The CVD coating applied to the carbide substrate provides a hard, thermally stable layer that reduces abrasive wear and helps maintain the cutting edge under continuous loads. Combined with the T5115 grade’s balanced formulation, the insert delivers consistent performance when turning cast iron, extending intervals between indexings. Using a double-sided design halves the cost per cutting edge compared with single-sided alternatives while maintaining predictable behaviour under moderate cutting parameters.

Geometry that supports consistent surface quality

The insert’s rhombic CNMG geometry and 80° approach angle deliver a robust cutting face suitable for a wide range of external and internal contours. The 1.2 mm corner radius helps produce a smooth surface finish while resisting notch wear in interrupted cuts. At a plate thickness of 4.76 mm, the insert achieves the stiffness required for stable turning, and the neutral 0° clearance contributes to a reliable contact zone, especially in applications where tool support and repeatability are critical.

Seamless integration into ISO tooling systems

As part of the ISO turning insert family, the CNMG120412 format fits conventional external holders and boring bars when matched for form, tolerance class and thickness. The cylindrical hole style allows secure clamping with standard screws and backplates, simplifying tool assembly and replacement. The system approach—indexable insert, appropriate holder or boring bar, and clamping set—ensures reproducible mounting and straightforward inventory management across machining centres.

Productivity advantages and process stability

Optimised for cast iron, the grade delivers a compromise between edge stability and resistance to flank wear, which translates into steady cycle times and fewer unplanned tool changes. Effective chip control from the double-sided chipbreaker reduces the risk of re-cutting and helps maintain surface integrity. The combination of coating, grade and geometry supports improved productivity by reducing downtime and enabling consistent batch-to-batch results in series turning operations.

Contact Metav Werkzeuge for tailored cutting data and ordering options for Tungaloy indexable inserts; our consultants are available to discuss compatibility, cutting parameters and delivery—email info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: 6735867
• SKU: 6735867-Tungaloy
• Manufacturer SKU: TUN6735867
• Model series: ISO-Drehwendeschneidplatten
• Designation: CNMG120412 T5115

Facts

• Insert size: 12 mm
• Thickness: 4.76 mm
• Corner radius: 1.2 mm
• Clearance angle: 0°
• Approach/lead angle: 80°
• Hole: cylindrical

Special features

• Material: carbide
• Coating: CVD-coated
• Chipbreaker: double-sided
• Shape: rhombic (CNMG)
• Compatibility: ISO holders and boring bars
• Application: external and internal turning; suitable for cast iron

FAQ

What materials is this insert recommended for?
The CNMG120412 T5115 indexable insert from Tungaloy is a universal grade optimised primarily for cast iron; its combination of CVD-coated carbide and balanced edge properties also makes it suitable for a range of ferrous materials when cutting data are adjusted.

What are the key geometry and mounting details to check?
Check the insert size 12 mm, thickness 4.76 mm and corner radius 1.2 mm; the CNMG shape with an 80° approach angle and a cylindrical hole requires a matching ISO holder and the correct clamp and screw for secure mounting.

Can this insert be used for internal turning and boring operations?
Yes, the format and clamping style permit use in suitable boring bars as well as external holders; compatibility is determined by holder form, tolerance and clamping method.

How does the CVD coating improve machining performance?
CVD coating on the T5115 grade increases thermal and abrasive resistance, helping to keep the cutting edge intact under continuous cutting loads and supporting predictable tool life for series production.

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.