SNMG 120408 AH6225 Wendeplatten - Tungaloy

Take advantage of a hard-wearing, PVD-coated carbide grade that balances a sharp cutting edge with stable performance for medium turning tasks; the SNMG form and 0.8 mm corner radius provide reliable chip control and repeatable results in rostfreier Stahl operations. Order the insert directly via Metav Werkzeuge or consult our specialists for holder compatibility and setup.

SNMG 120408 AH6225 — Tungaloy turning insert for Turning

SNMG120408 AH6225 is an ISO-conforming indexable insert designed for external and internal turning, optimised for rostfreier Stahl and variable machining conditions

• PVD-coated carbide AH6225 for rostfreier Stahl
• Stable, sharp cutting edge for medium machining
• Double-sided chipbreaker for consistent chips
• Square SNMG form with 0.8 mm corner radius

Boosted wear resistance and consistent edge performance

The PVD-coated AH6225 grade combines a wear-resistant top layer with a finely prepared carbide substrate (Hartmetall) to deliver a balance between edge sharpness and toughness. This composition improves resistance to built-up edge and abrasion when machining rostfreier Stahl, which often work-hardens and challenges tool life. The result is a reduction in unplanned tool changes and more predictable process windows — valuable for batch production and mixed-series turning where stability is essential.

Reliable chip control and improved surface quality

Equipped with a double-sided chipbreaker, the insert secures controllable swarf formation across a range of depths of cut, helping to prevent long, stringy chips that impair cycle time and surface integrity. Better chip control contributes directly to a more consistent surface finish and fewer interruptions for chip removal. In applications that require repeatable part geometry, this behaviour supports higher first-pass acceptance rates and steadier downstream processing.

ISO SNMG form for straightforward mechanical compatibility

The insert follows ISO SNMG120408 geometry, a square plate with a cylindrical hole and a nominal included angle of 90°, ensuring standardised mounting on compatible external holders and boring bars. Compatibility depends on form, relief angle, tolerance class, attachment method, size and thickness; matching those parameters avoids clamping issues and ensures correct seat contact. The listed 0° relief angle and plate thickness 4.76 mm are key dimensions that determine which holders and clamp sets are suitable.

Economical operation through indexability and edge geometry

Being indexable and double-sided, the component allows multiple cutting edges per insert, lowering per-edge cost and simplifying inventory management. The 0.8 mm corner radius provides a compromise between edge strength and finish: large enough to resist thermal and mechanical chipping, yet small enough to achieve acceptable part finish in medium-turning operations. Such a trade-off supports productive machining strategies where both robustness and surface quality matter.

Practical selection notes for stable machining

For best results in external or internal turning of rostfreier Stahl, select a holder that matches the SNMG seat and secures the insert without overhang; ensure clamp sets and spare screws correspond to the ISO geometry. Choose a chipbreaker and grade aligned with the workpiece stability and cutting conditions — the AH6225 grade is intended as a universal solution for changing conditions and moderate cutting parameters. For tailored recommendations on feeds, speeds and clamping, consult technical advisors to match the insert to machine rigidity and operation scope.

Contact Metav Werkzeuge today for application advice on the Tungaloy SNMG120408 AH6225 turning insert — email info@metav-werkzeuge.com or call +49 2822 7131930 for fast, practical support

Technical data

• Article number: 6947319
• SKU: 6947319-Tungaloy
• Manufacturer SKU: TUN6947319
• Material: Hartmetall
• Model series: ISO-Drehwendeschneidplatten

Facts

• Size (flat-to-flat): 12 mm
• Thickness: 4.76 mm
• Corner radius: 0.8 mm
• Included angle: 90°
• Relief angle: 0°

Special features

• ISO SNMG120408 form
• PVD-coated grade AH6225
• Double-sided chipbreaker
• Square plate with cylindrical hole
• Suitable for rostfreier Stahl

FAQ

What materials is this insert intended for?
The AH6225 PVD-coated grade is specified for machining rostfreier Stahl and offers a good balance of wear resistance and edge sharpness for medium turning operations.

How is compatibility with a toolholder determined?
Compatibility depends on form, relief angle, tolerance class, attachment method, size and thickness; the SNMG120408 geometry and 4.76 mm thickness must match the holder seat and clamp system.

Does the chipbreaker suit both external and internal turning?
Yes, the insert’s double-sided chipbreaker is designed for controlled chip formation in both external and internal turning, aiding consistent process behaviour.

What benefit does the 0.8 mm corner radius provide?
A 0.8 mm corner radius increases edge robustness against chipping while still allowing acceptable surface finish in medium machining, supporting longer uninterrupted runs.

Is AH6225 a universal grade for variable conditions?
The AH6225 grade is formulated as a universal solution for changing conditions when machining rostfreier Stahl, combining durability with a stable cutting edge for varied 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.