CNMG 120408 AH6235 Wendeplatten - Tungaloy

Combining durable PVD coating and a robust 0.8 mm corner radius, this ISO indexable insert delivers reliable performance when turning rostfreier Stahl and handling interrupted cuts. Benefit from stable chip control and long tool life — order the CNMG120408 AH6235 Tungaloy insert via Metav Werkzeuge or contact our consultants for tailored machining advice.

CNMG 120408 AH6235 — Tungaloy ISO turning insert, PVD-coated, 0.8 mm radius

A CNMG 120408 AH6235 indexable insert for ISO-standard turning, optimised for machining rostfreier Stahl and applications with elevated risk of edge breakouts.

• PVD-coated AH6235 grade for rostfreier Stahl
• Rhombic CNMG120408 with 80° cutting angle
• Double-sided chipbreaker for consistent chips
• Cylindrical hole, 0° clearance, 0.8 mm corner radius

Boosted productivity from coating and grade

The PVD-coated AH6235 grade combines toughness with wear resistance to extend tool life in demanding turning operations. Designed for rostfreier Stahl, the tougher substrate reduces the tendency for edge chipping during interrupted cuts. This means fewer insert changes, more uptime and a measurable increase in machining throughput. The carbide base provides the mechanical strength required for higher feed rates while the coating preserves edge integrity under heat and abrasion.

Predictable chip control for safer turning

A well-matched chipbreaker is essential for process security. The double-sided chipbreaker on this rhombic insert creates short, controllable chips that evacuate reliably from the cutting zone, lowering the risk of built-up edge and improving surface quality. For operations where chip shape and removal affect cycle time and tool life, the engineered chip control reduces interruptions and helps maintain consistent part tolerances.

Easy integration into ISO tool systems

The insert conforms to ISO form and sizing, so compatibility with appropriate holders is achieved by matching form, relief angle, tolerance class, clamp method, size and thickness. The rhombic geometry with an 80° cutting angle and a 0° clearance angle is suitable for a wide range of external and internal turning tasks. The presence of a cylindrical hole simplifies secure clamping and repeatable indexability, supporting predictable set-up and reduced changeover time.

Geometry choices that balance strength and finish

A 0.8 mm corner radius is a practical compromise between cutting-edge strength and surface finish: it increases edge robustness for interrupted machining while still enabling acceptable workpiece roughness. The 4.76 mm plate thickness and 12 mm insert size deliver the rigidity required for stable cuts. Select this geometry when the process demands resistance to edge fracture without sacrificing control over dimensional accuracy and surface quality.

Contact Metav Werkzeuge today for application-specific recommendations and to arrange supply of the Tungaloy CNMG120408 AH6235 insert — email info@metav-werkzeuge.com or call +49 2822 7131930 for fast technical support and ordering guidance

Technical Data

• Article number: 6879532
• SKU: 6879532-Tungaloy
• Manufacturer SKU: TUN6879532
• Model series: ISO indexable turning inserts
• Type designation: CNMG120408
• Grade / coating: AH6235 (PVD)
• Material: carbide (Hartmetall)
• Application: Turning

Core data

• Corner radius: 0.8 mm
• Insert size: 12 mm
• Thickness: 4.76 mm
• Cutting angle: 80°
• Clearance angle: 0°
• Hole type: cylindrical
• Double-sided chipbreaker: yes

Special features

• Rhombic insert geometry
• Suitable for rostfreier Stahl and interrupted cuts
• ISO-compatible clamping and indexing
• PVD coating for improved wear resistance
• Double-sided use for economical indexing

FAQ

What materials is this insert best suited for?
The CNMG120408 AH6235 Tungaloy indexable insert is optimised for machining rostfreier Stahl and performs well in operations with interrupted cuts or increased breakout risk.

How does the AH6235 grade affect tool life?
The PVD-coated AH6235 grade on this insert enhances wear resistance while retaining toughness, resulting in longer tool life and fewer indexing cycles under typical turning conditions.

Is the insert compatible with standard holders?
Yes. The CNMG120408 form and dimensions conform to ISO standards; compatibility depends on matching holder form, clearance angle, tolerance class, fastening method, size and thickness.

What advantage does the 0.8 mm corner radius provide?
A 0.8 mm corner radius increases edge strength for interrupted machining and broken edges while still allowing acceptable surface finish and dimensional control in turning applications.

Can the insert be used both sides to economise tooling?
The double-sided chipbreaker and indexable design allow reversal and re-use, offering cost efficiency through multiple cutting edges per insert.

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.