SNMG 120412 AH6235 Wendeplatten - Tungaloy

Take advantage of the combination of PVD-coated carbide grade AH6235 and a double-sided chipbreaker to secure stable machining in interrupted cuts and high-outbreak-risk applications. The result is reliable productivity and predictable tool life for turning operations; order the insert directly via Metav Werkzeuge or consult our specialists for application guidance.

SNMG 120412 AH6235 turning insert (ISO 120412, 90°) – Tungaloy

The SNMG120412 AH6235 is an ISO-indexable turning insert for external and internal turning, optimised for interrupted cuts and work on rostfreier Stahl where a tougher grade and robust edge are required.

• ISO SNMG 120412 form, 90° geometry
• PVD-coated carbide grade AH6235
• Double-sided chipbreaker for interrupted cuts
• 12 mm square, 4.76 mm thickness

Stable cutting in interrupted and difficult conditions

The insert’s PVD-coated carbide composition and the AH6235 grade deliver improved resistance to chipping and plastic deformation, which is the principal benefit when turning interrupted profiles or materials prone to work hardening. By combining a tougher microstructure with a fine coating, the component sustains cutting forces and reduces unexpected edge failure; this leads to a lower scrap rate and more predictable cycle times when machining challenging sections. The geometry provides a controlled engagement angle, while the double-sided chipbreaker reduces vibration and helps to direct chips reliably away from the cutting zone.

Easy integration with ISO tooling systems

Designed to the ISO catalogue dimensioning, the insert ensures ISO compatibility with a broad range of external holders and boring bars. Compatibility is determined by form, clearance angle, tolerance class, attachment method, size and thickness; using an ISO-standard SNMG reduces setup time and inventory complexity for mixed-machine shops. The square form and cylindrical hole permit positive clamping and straightforward indexing, so downtime for insert changes is minimised and clamping repeatability is maintained across toolsets.

Optimised for rostfreier Stahl and varied materials

This grade is specified as a tougher option for rostfreier Stahl, offering better performance where adhesion and built-up edge can occur. In practice, the insert is also suitable for general turning tasks and can be selected for combinations of materials and stability levels. The 1.2 mm nose radius balances edge strength with achievable surface finish, enabling a practical compromise between robustness and dimensional accuracy when producing external profiles, shoulders or light finishing passes.

Durability, handling and shop-floor advantages

A 4.76 mm thickness and robust square form increase insert rigidity and extend edge life under interrupted loads, while the double-sided design doubles the usable cutting edges per index. For production environments seeking consistent throughput, this contributes to fewer tool exchanges and simpler stock control. Where predictability under varying cut conditions is a priority, the combination of geometry and the AH6235 grade promotes repeatable performance and steady surface quality over extended tool life.

Contact Metav Werkzeuge for tailored advice on Tungaloy turning inserts and application-specific recommendations; email info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: 6888775
• Manufacturer SKU: TUN6888775
• SKU: 6888775-Tungaloy
• Model series: ISO turning indexable inserts
• Designation: SNMG120412 AH6235 Tungaloy indexable insert

Core data

• Size: 12 mm
• Thickness: 4.76 mm
• Nose radius: 1.2 mm
• Relief angle: 0°
• Insert angle: 90°
• Hole style: with hole (cylindrical)
• Chipbreaker: double-sided

Special features

• Grade: AH6235
• Cutting material: carbide (PVD-coated)
• Shape: square
• Application: external and internal turning, interrupted cuts
• System components: ISO insert, matching external holder or boring bar, shim/clamp set, replacement screws

FAQ

What holder types are compatible with this insert?
Compatibility is determined by form, relief angle, tolerance and attachment; the SNMG120412 AH6235 Tungaloy indexable insert fits holders and boring bars designed for ISO SNMG inserts with matching size and clamping provisions.

Is this insert suitable for interrupted cutting on rostfreier Stahl?
Yes. The AH6235 grade and PVD-coated carbide are specified for tougher performance on rostfreier Stahl and for applications with elevated risk of edge breakout.

How many cutting edges are available per insert?
The square, double-sided design provides multiple usable edges; each side can be indexed to present a fresh cutting edge, effectively doubling edge life compared with single-sided inserts.

What surface finish can be expected with a 1.2 mm nose radius?
A 1.2 mm nose radius offers a balance between edge strength and surface quality, producing good finishes on general turning passes while maintaining robustness for interrupted features.

Are replacement screws and shims required for mounting?
The insert is part of a system comprising an ISO insert, a matching external holder or boring bar, a shim/clamp set and replacement screws; these ensure secure clamping and repeatable positioning.

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.