SNMG 120412 AH6225 Wendeplatten - Tungaloy

Benefit from the combination of a sharp, stable cutting edge and ISO conformity for consistent turning results; the AH6225 PVD-coated carbide grade and 1.2 mm corner radius deliver reliable performance in medium stainless-steel machining. Order the insert directly via Metav Werkzeuge or request advice from our technical consultants.

SNMG120412 AH6225 indexable insert for turning — Tungaloy, PVD-coated carbide, 1.2 mm radius

A SNMG120412 AH6225 indexable insert for ISO-standard turning, optimised for stainless steels and designed for stable, medium-duty machining.

• PVD-coated carbide AH6225 for stainless steels
• 1.2 mm corner radius for versatile cutting
• ISO SNMG form, 90° principal cutting angle
• Double-sided insert with cylindrical hole

Consistent cutting performance for stainless-steel turning

The SNMG120412 insert combines a PVD-coated carbide grade with a geometrically stable edge to maintain productivity when machining stainless steels. The AH6225 grade is formulated to offer a sharp yet robust cutting edge, reducing the tendency for material adhesion and built-up edge during interrupted cuts. For production environments where repeatability matters, the insert’s composition and coating support longer edge life and reduce dressing frequency, which translates into a smoother production flow and fewer tool changes.

Geometry that reduces setup time and improves accuracy

An ISO-standard square form with a 90° principal cutting angle and a 0° clearance profile simplifies toolholder selection and alignment. The 1.2 mm corner radius provides a balance between strength and finish: it is large enough to withstand moderate cutting forces yet small enough to achieve good surface quality. The insert’s cylindrical hole and tolerance class ensure secure clamping in compatible holders, minimising runout and vibration for consistent diameters and surface integrity on turned components.

Coating and grade benefits explained for practical use

The PVD-coated surface on the AH6225 grade enhances thermal resistance and improves wear performance under variable cutting conditions. In plain terms, the coating reduces friction and helps the cutting edge resist microchipping, while the substrate carbide delivers core toughness. This combination is particularly suitable for medium cutting depths and feeds in stainless steels, where heat and work hardening can otherwise shorten tool life. Selecting this grade supports predictable tool life and a controlled cost-per-component.

System integration and operational advantages

As an ISO-series indexable insert, the component fits into standard tool systems comprising an insert, matching external holder or boring bar, and clamping kit. The double-sided design doubles the available cutting edges before disposal, improving economics for batch production. With the defined dimensions (12 mm form size and 4.76 mm thickness), the insert integrates into many holder families, and the central hole style allows straightforward fastening and replacement. The net result is reduced downtime and more efficient machining cycles in workshops focused on repeatable, quality turning.

For technical advice, compatibility checks or to order SNMG120412 AH6225 inserts from Tungaloy, contact Metav Werkzeuge by e‑mail at info@metav-werkzeuge.com or by phone on +49 2822 7131930 — our specialists are ready to assist with application details and supply.

Technical data

• Article number: 6947321
• Manufacturer SKU: TUN6947321
• Model series: ISO-Drehwendeschneidplatten
• Product designation: SNMG120412 AH6225 Tungaloy-Wendeplatte

Facts

• Size: 12 mm
• Thickness: 4.76 mm
• Corner radius: 1.2 mm
• Principal cutting angle: 90°
• Clearance angle: 0°
• With hole: yes

Special features

• Material: carbide
• Coating/grade: PVD-coated AH6225
• Plate form: square
• Hole style: cylindrical hole
• Chipbreaker: double-sided
• Application: turning (external and internal)

FAQ

What materials is this insert suitable for?
The SNMG120412 AH6225 insert is designed primarily for machining stainless steels; the AH6225 grade and PVD coating improve wear resistance and edge stability in those materials.

Is the geometry compatible with standard SNMG holders?
Yes. The ISO SNMG form, size 12 and 4.76 mm thickness match standard external holders and boring bars that accept SNMG120412 inserts.

Can both sides of the insert be used?
Yes. The insert features a double-sided chipbreaker, providing multiple indexed cutting edges before replacement.

What does the 1.2 mm corner radius affect in practice?
A 1.2 mm corner radius offers a compromise between edge strength and surface finish, improving tool life under moderate cutting forces while maintaining acceptable surface quality.

Is the insert suitable for interrupted cuts?
The PVD-coated AH6225 carbide grade and robust geometry provide good resistance to chipping in interrupted cuts typical of stainless-steel turning applications.

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.