SNMG 120412 AH6225 Wendeplatten - Tungaloy

Take advantage of the combination of precise ISO conformity, a sharp yet stable PVD-coated carbide grade, and a geometry that simplifies toolholding for consistent turning performance; order the insert directly via Metav Werkzeuge or consult the technical team for application advice.

SNMG120412 AH6225 Tungaloy Turning Insert — ISO square insert for external and internal turning, PVD-coated carbide

The SNMG120412 AH6225 is a square, ISO-format turning insert engineered for reliable external and internal machining of stainless steels under variable conditions.

• SNMG120412 geometry, 90° square insert
• PVD-coated carbide grade AH6225
• Universal for stainless steels and variable machining
• Cylindrical-hole fastening with double-sided chipbreaker

Consistent cutting performance for mid-range turning operations

The PVD-coated carbide grade AH6225 combines a sharp cutting edge with controlled edge strength to deliver consistent results in mixed production runs. As a PVD-coated indexable plate, the coating improves wear resistance and edge life compared with uncoated grades, while the substrate material provides toughness where interrupted cuts occur. This balance supports steady cycle times and predictable insert life when machining stainless steels, helping planners forecast tool-change intervals and reduce unscheduled stoppages.

ISO conformity and geometry that simplifies toolholder compatibility

Produced to ISO dimensions, this insert matches standard clamping systems where compatibility depends on insert form, relief angle, tolerance class, fixation type, size and thickness. The 90° square shape and 0° relief angle yield a straightforward orientation for common turning tasks, while the cylindrical hole enables secure fastening. The double-sided chipbreaker allows indexability on both faces, effectively doubling usable edges and improving process economics. Understanding these parameters makes selection and replacement simple for maintenance teams and toolroom staff.

Practical advantages that reduce downtime and handling complexity

The indexable nature and double-sided chipbreaker reduce changeover time and lower inventory pressure since fewer distinct insert types are required. With a plate thickness of 4.76 mm and a corner radius of 1.2 mm, the design supports stable edge engagement and reliable vibration damping in medium-duty cutting. The typical system set-up includes the ISO insert, a matching external holder or boring bar, a support plate/clamping kit and spare screws, which streamlines procurement and keeps the tool carousel stocked with compatible components to maintain production continuity.

Guidance for grade and chipbreaker selection in mixed production

For turning tasks that alternate between roughing and finishing or that involve varying batch sizes, a universal grade such as AH6225 offers flexibility: it maintains a useful compromise between wear resistance and edge robustness. Choose the chipbreaker style and insert geometry to match material ductility and cut depth; for frequent interrupted cuts or instability, a more robust chipbreaker and conservative speeds are advisable. The plate suits both external and internal turning, provided the correct holder, clearance, and cutting data are applied to preserve edge life and part tolerance.

For application-specific recommendations or to procure the Tungaloy SNMG120412 AH6225 insert, contact Metav Werkzeuge for tailored advice and ordering support.

Technical Data

• Article number: 6947292

• Manufacturer SKU: TUN6947292

• Model series: ISO turning inserts

• Brand: Tungaloy

Facts

• Material: carbide

• Coating: PVD

• Grade: AH6225

• Geometry: SNMG120412 (square)

• Plate size: 12 mm

• Thickness: 4.76 mm

• Corner radius: 1.2 mm

• Relief/freeze angle: 0°

• Insert angle: 90°

Special features

• Hole: with cylindrical hole

• Chipbreaker: double-sided

• Typical application: external and internal turning

• System components: insert, holder or boring bar, support plate/clamping kit, spare screws

FAQ

What materials is this insert intended for?
The SNMG120412 AH6225 insert is designed primarily for machining stainless steels and performs well under variable cutting conditions.

How does the AH6225 grade benefit production?
The AH6225 PVD-coated carbide provides a sharp cutting edge with improved wear resistance, offering a balance of edge stability and lifespan suited to mixed-production turning.

Can the insert be indexed to use multiple cutting edges?
Yes, the insert is double-sided with a cylindrical-hole fastening, enabling indexing to utilise additional edges and extend service intervals.

Is the SNMG120412 compatible with standard ISO toolholders?
The SNMG120412 conforms to ISO dimensions; compatibility depends on holder form, relief angle, tolerance class, fixation type, size and thickness, as with standard ISO inserts.

What is the corner radius and how does it affect cutting?
The corner radius is 1.2 mm, which supports improved edge strength and more stable engagement for medium-duty turning, aiding surface finish and reducing the risk of edge chipping.

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.