CNMG 120412 AH6235 Wendeplatten - Tungaloy

Benefit from the combination of a PVD-coated AH6235 grade and a 1.2 mm corner radius to achieve secure, chip-resistant turning in challenging stainless-steel applications; the ISO-form geometry ensures straightforward compatibility with standard holders. Order directly via Metav Werkzeuge or consult their technical team for setup advice.

CNMG120412 AH6235 Turning Insert – Tungaloy, PVD-coated carbide, 1.2 mm radius

The CNMG120412 AH6235 is an ISO-standard rhombic turning insert designed for both external and internal turning, optimised for interrupted cuts and applications with a high risk of edge breakout.

• ISO rhombic insert CNMG120412
• PVD-coated AH6235 carbide grade
• 1.2 mm corner radius for durability
• Double-sided chipbreaker, with hole
• Suited for stainless steel and interrupted cuts

High reliability for stainless-steel turning with a tougher grade

The AH6235 carbide grade is a deliberately tougher, PVD-coated variant that reduces the risk of edge breakage during interrupted cuts and when machining rostfreier Stahl. The PVD-coated surface improves wear resistance and maintains cutting-edge integrity under variable cutting forces, which translates into longer tool life and fewer indexings. For operations where chip control is critical, the combination of grade and a double-sided chipbreaker mitigates clogging and provides consistent chip geometry. This results in a more predictable process and contributes to higher overall productivity on hard-to-machine stainless steels.

Precise ISO geometry for secure clamping and predictable results

The insert follows the ISO CNMG geometry with an 80° included angle and a 1.2 mm corner radius, matched to a 4.76 mm plate thickness and a 12 mm inscribed circle. The nominal clearance angle is 0°, while the plate is produced with a cylindrical hole for positive location in compatible toolholders. These measurable characteristics support repeatable seating and reliable torque transmission from holder to cutting edge; compatibility is governed by form, clearance angle, tolerance class, fastening method, size and thickness. The standardised form simplifies tool inventory and reduces setup time in production environments that rely on ISO tooling systems.

System guidance and practical benefits for workshop use

Integration into a turning system requires a suitable holder or boring bar, an underlay/clamping set and replacement screws as part of the modular setup; the insert is designed to be indexed to present fresh edges, lowering tooling costs per component. Owing to the insert’s PVD-coated carbide construction and rhombic shape, it is especially effective for applications that alternate between stable and interrupted cutting conditions. Selecting the correct chipbreaker and grade for the workpiece and machine stability will maximise surface finish and process security. The ISO format also enables quick replacement and consistent repeatability, supporting a lean production flow and reduced downtime.

For tailored recommendations on Tungaloy AH6235 inserts and compatible holders, contact Metav Werkzeuge for application support at info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: 6880205
• SKU: 6880205-Tungaloy
• Manufacturer SKU: TUN6880205
• Label: CNMG120412 AH6235 Tungaloy-Wendeplatte
• Model series: ISO-Drehwendeschneidplatten

Facts

• Corner radius: 1.2 mm
• Plate thickness: 4.76 mm
• Inscribed circle: 12 mm
• Included angle: 80°
• Clearance angle: 0°

Special features

• Material: Hartmetall
• Grade/coating: AH6235, PVD-coated
• Insert form: rhombic (CNMG)
• Hole: with cylindrical hole
• Chipbreaker: double-sided
• Typical application: Drehen (external and internal turning)

FAQ

Which materials is this insert intended for?
The AH6235 grade is tailored for machining rostfreier Stahl and performs well in interrupted cuts where increased breakout risk exists; the PVD-coated carbide provides enhanced wear resistance for such materials.

What are the key geometry and dimensional specifications?
The CNMG120412 insert has a 1.2 mm corner radius, 4.76 mm plate thickness, 12 mm inscribed circle and an 80° included angle with a 0° clearance angle; the product is listed as CNMG120412 AH6235 Tungaloy (SKU 6880205-Tungaloy).

Does the insert come with a coating and what are the benefits?
Yes, the insert uses a PVD-coated carbide composition (AH6235), which improves edge stability and wear resistance, particularly beneficial for rostfreier Stahl and interrupted operations.

How is the insert mounted and what else is required for the system?
The ISO-standard insert is mounted in a compatible holder or boring bar; a suitable underlay/clamping set and replacement screws are part of a complete system to ensure secure seating and repeatable clamping with this CNMG 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.