CNMG 120408 AH6235 Wendeplatten - Tungaloy

Combining the PVD-coated AH6235 grade with the ISO CNMG120408 geometry delivers a robust solution for machining rostfreier Stahl and handling interrupted cuts; the 0° clearance and 80° rhombic form provide predictable compatibility with ISO holders. Order directly via Metav Werkzeuge or ask our consultants for application-specific advice.

CNMG120408 AH6235 Tungaloy indexable insert (ISO turning) — PVD-coated carbide, 0° clearance

CNMG120408 AH6235 Tungaloy indexable insert for external and internal turning, optimised for rostfreier Stahl and applications with elevated breakout risk

• PVD-coated carbide AH6235 for toughness
• ISO CNMG120408 rhombic insert, 0° clearance
• Cylindrical hole for secure clamping
• Optimised for rostfreier Stahl and interrupted cuts

Reliable cutting in rostfreier Stahl and difficult interruptions

The combination of a PVD-coated surface and the AH6235 tougher grade was developed for demanding applications such as turning rostfreier Stahl and parts with interrupted cuts. The coating reduces friction and thermal loading, while the substrate provides resistance to notch wear and chipping. With a double-sided chipbreaker, chip formation is stabilised so fewer unplanned stops occur and surface quality remains consistent. This results in more predictable cycle times and reduced scrap rates in batch production.

Faster set-ups and predictable holder compatibility

Being an ISO-format insert, the CNMG120408 conforms to standard geometries; compatibility with a holder is determined by form, 0° clearance, tolerance class, fastening method, size and thickness. The cylindrical hole and the rhombic outline ensure accurate seating and repeatable index positions during tool changes. As a consequence, set-up time is reduced and tool changeovers become more reliable, which supports steady machine uptime and easier process documentation.

Extended tool life and cost-effective productivity

The AH6235 composition and PVD finish are selected to balance toughness and wear resistance, offering longer tool life under unstable cutting conditions. The insert’s geometry and coating together contribute to improved edge stability, lowering the frequency of insert changes and raising overall productivity. For operations where breakout or heavy workpiece adhesion is likely, this grade helps maintain cutting performance without sacrificing surface finish.

Practical guidance for workshop use and system build-up

This insert is intended for both external and internal turning within a system consisting of the insert, a matching outer holder or boring bar, and a shim/clamp set with replacement screws. The nominal plate thickness is 4.76 mm, corner radius 0.8 mm and plate size 12 mm, which should be matched to the holder’s pocket dimensions and clamping specification. For best results, select the chipbreaker and grade in line with the workpiece stability and cutting data; small adjustments to feed and speed can substantially improve chip control and component finish.

For applications that demand reliable performance in rostfreier Stahl, choose the Tungaloy AH6235 CNMG120408 insert — contact Metav Werkzeuge for tailored advice and ordering at info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: 6903354
• Manufacturer SKU: 6903354-Tungaloy
• Model series: ISO-Drehwendeschneidplatten
• Material: carbide
• Grade: AH6235
• Coating: PVD

Numbers / Core technical data

• Geometry designation: CNMG120408
• Plate size: 12 mm
• Plate thickness: 4.76 mm
• Corner radius: 0.8 mm
• Relief angle: 0°
• Cutting edge angle: 80°

Special features

• Rhombic plate form
• Cylindrical hole
• Double-sided chipbreaker
• ISO-standard insert for turning
• Suited for interrupted cuts and rostfreier Stahl

FAQ

What materials is this insert suitable for?
The CNMG120408 AH6235 insert is formulated for machining rostfreier Stahl and offers reliable performance in interrupted cuts and materials prone to built-up edge.

How does the AH6235 grade affect tool life?
The AH6235 grade combines toughness with a PVD surface to resist chipping and notch wear, so the CNMG120408 shows a longer service life under unstable cutting conditions.

Is the insert compatible with standard CNMG holders?
Yes; the CNMG120408 conforms to ISO geometry. Compatibility depends on holder pocket form, tolerance class, fastening and thickness—proper seating is aided by the cylindrical hole.

What chip control can be expected with this insert?
The double-sided chipbreaker on the CNMG120408 improves chip formation and evacuation, particularly during external and internal turning where chip flow is critical.

Which machining tips help avoid edge breakout?
For the CNMG120408 AH6235, reduce cutting speed slightly and increase feed when encountering heavy adhesion or interrupted cuts; verify clamping and use a matching shim/clamp set for stable mounting.

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.