SNMG 120412 AH6225 Wendeplatten - Tungaloy

Benefit from the stable cutting edge of the AH6225 grade, the reliability of a PVD coating and the 1.2 mm corner radius for consistent turning results; order the insert directly via Metav Werkzeuge or consult our team for application advice.

SNMG 120412 AH6225 ISO turning insert — Tungaloy, PVD-coated, 90°

The SNMG120412 AH6225 is an ISO‑normed square insert intended for external and internal turning, engineered for reliable performance in variable stainless steel applications.

• ISO SNMG 120412 geometry
• PVD-coated cemented carbide
• Universal grade for stainless steels
• Double-sided chipbreaker, cylindrical hole

Consistent geometry for reproducible machining results

The ISO designation and standardized form ensure predictable behaviour when mounted in compatible holders; compatibility depends on form, relief angle, tolerance class, fastening method, size and thickness. Using an ISO insert with defined dimensions simplifies tool setup and repeatability on batch production runs. The square plate and 90° seating allow clear orientation for external and internal turning operations, while the central cylindrical hole secures the insert reliably in the clamping system. This standardisation reduces setup variation and supports stable part quality across shifts.

Durable edge and reliable performance in stainless steels

The AH6225 grade is a PVD-coated cemented carbide developed as a universal solution for stainless steels, combining a sharp cutting edge with a stable flank for medium-duty cutting under fluctuating conditions. The coating limits flank adhesion and improves wear resistance, which translates into longer edge life and more predictable tool-change intervals. By selecting a universal grade, process planners achieve a balance between surface finish and tool life, reducing the need for frequent grade swaps and enabling a smoother production flow.

Practical features that reduce downtime and simplify handling

A 1.2 mm corner radius offers a compromise between edge strength and profile precision, supporting robust chip formation while maintaining dimensional control. The double-sided chipbreaker extends service life by allowing both indexable faces to be used before replacement. Plate thickness 4.76 mm and 12 mm inscribed circle provide mechanical stability in holders designed for SNMG inserts. Together, these features contribute to fewer interruptions for regrinding or replacement and improved cycle-time predictability for turning operations.

Contact Metav Werkzeuge to discuss how Tungaloy SNMG 120412 AH6225 inserts can be integrated into existing tooling systems and to request tailored cutting data for specific stainless steel grades

Technical data

• Article number: 6826083
• Manufacturer SKU: TUN6826083
• SKU: 6826083-Tungaloy
• Name: SNMG120412 AH6225 Tungaloy insert
• Brand: Tungaloy

Facts

• Corner radius: 1.2 mm
• Plate thickness: 4.76 mm
• Inscribed circle (size): 12 mm
• Angle: 90°

Special features

• Material: PVD-coated cemented carbide
• Grade: AH6225 (universal for stainless steels)
• Chipbreaker: double-sided
• Hole: with cylindrical locating hole
• Plate form: square
• Model series: ISO turning inserts
• Typical application: external and internal turning

FAQ

What materials is this insert suitable for?
The SNMG120412 AH6225 insert is specified for machining stainless steels and performs well under medium cutting conditions thanks to its AH6225 grade and PVD coating.

How does the PVD coating affect performance?
The PVD coating on the SNMG120412 AH6225 improves wear resistance and reduces adhesion, resulting in longer edge life and more consistent surface finish during turning.

What does the cylindrical hole mean for clamping?
The cylindrical hole secures the insert in the clamping system, enhancing repeatability and mechanical stability when the SNMG120412 AH6225 is mounted in a compatible ISO holder.

Can both faces of the insert be used?
Yes; the double-sided chipbreaker allows both indexable faces to be used before replacement, extending effective tool life and lowering tooling costs.

Which corner radius should be chosen for finishing versus roughing?
The 1.2 mm corner radius on this SNMG120412 configuration balances edge strength and profile accuracy, making it suitable for general-purpose turning; smaller radii are typically chosen for fine finishing passes.

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.