SNMG 120408 AH6225 Wendeplatten - Tungaloy

Combining a PVD-coated carbide grade and a 0.8 mm corner radius, this insert provides a sharp yet stable cutting edge for reliable performance in rostfreier Stahl turning. Benefit from ISO compatibility and a double-sided chipbreaker for efficient chip control; order directly via Metav Werkzeuge or ask our consultants for selection help.

SNMG120408 AH6225 Tungaloy turning insert — PVD-coated carbide, 0.8 mm radius

The SNMG120408 AH6225 Tungaloy is an ISO-standard square turning insert designed for external and internal turning, optimised for rostfreier Stahl and similar alloys.

• PVD-coated carbide grade AH6225
• Universal grade for rostfreier Stahl
• Square insert with 90° cutting geometry
• Double-sided chipbreaker and cylindrical hole

Consistent cutting performance for rostfreier Stahl machining

The SNMG120408 AH6225 insert pairs a PVD-coated surface with a wear-resistant carbide substrate to balance a sharp cutting edge and stable edge life. The AH6225 grade is formulated as a universal option for rostfreier Stahl, delivering reliable results under medium machining conditions and when process variables change. The PVD coating reduces adhesion and increases resistance to built-up edge, which translates into longer tool life and steadier component quality over production runs.

Seamless integration into ISO tool systems for fast setup

As an ISO-standard SNMG insert, compatibility with holders is determined by form, clearance angle, tolerance class, fastening type, size 12 mm, and 4.76 mm thickness. The square shape and 90° cutting geometry simplify set-up for facing and external turning, while the 0.8 mm corner radius supports both light finishing and modest stock removal without sacrificing surface integrity. Clear specification of geometry and dimensions enables easier tool management and predictable repeatability across tool changes.

Effective chip control and flexible application range

The double-sided chipbreaker design allows two usable cutting edges per side and contributes to controlled chip formation in variable conditions. For workshops facing mixed batches or changing stability, the combination of chipbreaker geometry and the AH6225 grade aids reliable chip evacuation and reduces the risk of workpiece damage. Selecting this insert supports a balance between productivity and surface finish when machining rostfreier Stahl or comparable materials.

Practical selection and system considerations for durable results

For optimal performance, pair the insert with a matching external holder or boring bar and ensure secure clamping with the correct shim and screw set. The insert’s cylindrical hole supports precise centring and stable fastening, helping to maintain repeatable tool position. When choosing cutting parameters, account for workpiece rigidity and coolant strategy to exploit the PVD-coated carbide benefits while extending tool life. If uncertainty remains about holder compatibility or grade selection, technical advice is available to match the insert to the machining scenario and stability conditions.

For detailed application advice on Tungaloy inserts and to confirm holder compatibility for rostfreier Stahl turning, contact Metav Werkzeuge at info@metav-werkzeuge.com or call +49 2822 7131930 — our consultants will assist with selection and availability.

Technical data

• Article number: 6825967
• SKU: 6825967-Tungaloy
• Manufacturer SKU: TUN6825967
• Model series: ISO-Drehwendeschneidplatten
• Designation: SNMG120408 AH6225 Tungaloy turning insert
• Application: Drehen

Dimensions & core data

• Corner radius: 0.8 mm
• Size: 12 mm
• Thickness: 4.76 mm
• Clearance angle: 0°
• Cutting angle: 90°
• ISO code: 120408

Materials & features

• Material: carbide (Hartmetall)
• Coating: PVD
• Grade: AH6225
• Chipbreaker: double-sided
• Hole: with cylindrical hole
• Shape: square
• System notes: compatibility by form, clearance angle, tolerance, fastening, size and thickness

FAQ

What materials is this insert suitable for?
The SNMG120408 AH6225 insert is designed primarily for rostfreier Stahl and performs well with similar stainless alloys thanks to its PVD-coated carbide grade.

Which insert geometry and dimensions define compatibility with holders?
Compatibility depends on the SNMG120408 ISO geometry: size 12 mm, 4.76 mm thickness, 90° cutting angle and 0° clearance; holders matching these specifications ensure correct fit.

How does the AH6225 grade behave under varying machining conditions?
AH6225 offers a balanced combination of a sharp, stable cutting edge and wear resistance, providing consistent performance in medium machining and changing process conditions.

What is the purpose of the cylindrical hole in the insert?
The cylindrical hole enables secure centring and fastening in the seat, improving repeatability and stability of the insert during turning operations.

Can the insert be used on both external and internal turning?
Yes, the square SNMG form and robust chip control make it suitable for both external and internal turning when paired with appropriate holders and parameters.

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.