CNMG 120408 AH8005 Wendeplatten - Tungaloy

High wear resistance and stable chip control result from the PVD‑coated carbide grade AH8005 and the precise 0.8 mm nose radius, making the insert a reliable choice for demanding turning of heat‑resistant alloys; order directly via Metav Werkzeuge or consult our advisors for application support

CNMG 120408 AH8005 CNMG Turning Insert by Tungaloy — PVD-coated carbide, 0.8 mm radius

The CNMG120408 AH8005 is an ISO‑standard indexable turning insert for external and internal turning, designed for stable machining of heat‑resistant alloys and hard materials

• PVD-coated carbide grade AH8005
• 0.8 mm nose radius for consistent finish
• Double-sided chipbreaker for stability
• ISO-standard CNMG120408 with cylindrical hole

Consistent wear resistance and extended life for heavy-duty turning

The PVD‑coated carbide composition and AH8005 grade provide high thermal stability and abrasion resistance, which leads to predictable tool life in continuous production. The coating reduces built‑up edge and improves temperature tolerance during high contact temperatures, so the insert delivers reproducible surface quality and fewer unplanned index changes. As a consequence, production runs remain more consistent and downtimes are reduced, supporting measurable productivity gains.

Geometry that ensures repeatable surface finish and easy mounting

The rhombic form with an 80° included angle and a 0.8 mm nose radius yields controlled cutting forces and accessible corner geometry for a wide range of turning tasks. The insert is supplied with a cylindrical hole, compatible with standard clamping systems; correct holder selection depends on form, clearance angle, tolerance class, fastening method, size and thickness. This standardised geometry simplifies setup and replacement, reducing fixture time and helping maintain process stability.

Reliable chip control and flexible system integration

A double‑sided chipbreaker supports stable chip formation across varying depths of cut, while the PVD surface treatment helps during interrupted cuts and on tough alloys. The insert fits into the common ISO system build—indexable insert, matching external holder or boring bar, underlay/clamping set and replacement screws—allowing straightforward integration into existing tool inventories. For wet or dry turning of heat‑resistant alloys and other hard materials, the combination of substrate and chipbreaker design keeps machining predictable and efficient

Contact Metav Werkzeuge for availability and practical application guidance on the Tungaloy CNMG120408 AH8005 PVD‑coated insert — expert advice and rapid supply

Technical data

• Article number: 6741639-Tungaloy
• Manufacturer SKU: TUN6741639
• Manufacturer's article number: 6741639
• Model series: ISO indexable turning inserts
• Label: CNMG120408 AH8005 Tungaloy-Wendeplatte

Core technical data

• Size: 12 mm
• Thickness: 4.76 mm
• Nose radius: 0.8 mm
• Included angle: 80°
• Clearance angle: 0°
• Hole: with hole (cylindrical)

Special features

• Grade: AH8005
• Coating: PVD
• Shape: rhombic
• Chipbreaker: double-sided
• Hole style: cylindrical hole
• Application: Turning (external and internal)
• System components: outer holder/boring bar, underlay/clamping set, replacement screws

FAQ

What materials is this insert suited for?
The CNMG120408 AH8005 insert is optimised for heat‑resistant alloys and hard materials; the PVD‑coated carbide composition delivers wear resistance and thermal stability for such applications.

Can the insert be used for both external and internal turning?
Yes, the ISO‑standard geometry and rhombic form make the insert suitable for both external and internal turning operations when paired with the appropriate holder or boring bar.

How does the chipbreaker influence performance?
The double‑sided chipbreaker provides stable chip control over a range of cutting conditions, improving process safety and reducing the risk of built‑up edge.

Which parameters are important when choosing a compatible holder?
Compatibility depends on form, clearance angle, tolerance class, fastening style, size and thickness; ensure the holder matches the insert’s 12 mm size, 4.76 mm thickness and cylindrical hole.

Is the insert indexed on both sides?
Yes, the design is double‑sided, allowing indexation to maximise usable cutting edges and extend productive life.

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.