SNMG 120412 AH6225 Wendeplatten - Tungaloy

Take advantage of the combination of a PVD-coated carbide grade optimised for stainless steels, a compact SNMG geometry with a 1.2 mm corner radius, and a double-sided chipbreaker for cost-efficient, predictable turning results; order directly via Metav Werkzeuge or ask the consultants for tailored advice.

SNMG120412 AH6225 Tungaloy indexable insert for turning — PVD-coated carbide, 90°

A SNMG120412 indexable insert designed for external and internal turning applications, offering a sharp yet stable cutting edge for medium machining of stainless steels.

• SNMG120412 square insert, 90° geometry
• PVD-coated carbide AH6225 for stainless steel
• Double-sided chipbreaker for flexible machining
• Central cylindrical hole for screw clamping

Predictable tool life through a balanced grade and coating

The AH6225 grade is a PVD-coated carbide designed as a universal solution for machining stainless steels, providing a compromise between sharpness and edge stability. This balance reduces unexpected tool wear and supports more consistent cycle times, which is essential in production environments. The coating improves resistance to abrasive and adhesive wear, while the substrate maintains toughness under interrupted cuts. For operations with varying cutting conditions, the combination delivers reliable repeatability and reduced rework.

Geometry that simplifies holder selection and operation

The SNMG120412 format with 90° geometry and a 1.2 mm corner radius offers a versatile profile for contouring and shoulder turning. The square plate shape provides multiple indexed edges, increasing economic efficiency per insert. A double-sided chipbreaker enhances chip control across different feed rates, which contributes to process stability and cleaner swarf evacuation. Compatibility with a suitable holder depends on form, clearance angle, tolerance class, fastening, size and thickness; understanding these parameters ensures correct clamping and repeatable results.

Integration into a secure turning system for consistent parts

As part of an ISO-based insert system, the component is intended to be used with a matching outer turning holder, shim or clamp set, and replacement screws; this system approach supports rapid changeovers and stable clamping. The insert’s central cylindrical hole permits positive screw mounting, improving concentricity and reducing vibration risk. Specifying the correct chipbreaker and the AH6225 grade for the workpiece material yields improved surface finish and predictable tool life, which in turn helps to maintain throughput and lower overall machining costs.

For precise advice on selecting the correct insert geometry, chipbreaker and holder combination for specific turning tasks with Tungaloy’s AH6225 grade, contact Metav Werkzeuge for application-oriented support at info@metav-werkzeuge.com or call +49 2822 7131930 to secure the SNMG120412 insert.

Technical data

• Article number: 6947278
• Manufacturer article number: 6947278
• SKU: 6947278-Tungaloy
• Manufacturer SKU: TUN6947278

Core figures

• Insert format: 12 mm
• Plate thickness: 4.76 mm
• Corner radius: 1.2 mm
• Clearance angle: 0°
• Geometry angle: 90°

Special features

• Material: carbide
• Coating / grade: AH6225, PVD-coated
• Plate shape: square (SNMG)
• Hole: central, cylindrical
• Chipbreaker: double-sided
• Application: turning, external and internal
• ISO-conformant indexable insert

FAQ

What materials is this insert best suited for?
The SNMG120412 AH6225 Tungaloy insert is optimised for machining stainless steels and provides a good balance of edge sharpness and stability for medium cutting operations.

How does the AH6225 grade affect productivity?
AH6225 with its PVD coating enhances wear resistance while preserving a sharp cutting edge, resulting in longer periods between indexings and more consistent part quality when turning stainless steels.

Can this insert be used for internal turning as well as external turning?
Yes, the SNMG120412 geometry and the double-sided chipbreaker are suitable for both external and internal turning, provided the correct holder and clamping system are used.

What does the central cylindrical hole mean for clamping?
The central cylindrical hole enables positive screw mounting that improves concentricity and stabilises the insert under cutting forces, reducing vibration and improving surface finish.

Which system components are required for proper use?
A matching outer turning holder, an underlay/shim or clamp set and replacement screws are required to assemble the ISO-conformant turning system for reliable performance.

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.