VNMG 120404 AH6225 Wendeplatten - Tungaloy

The combination of a PVD-coated carbide grade AH6225 and an SS chipbreaker ensures stable cutting and dependable edge life for stainless steel turning; this insert suits both external and internal operations. Order the VNMG120404E-SS AH6225 directly via Metav Werkzeuge or consult our specialists for optimisation and setup advice.

VNMG120404E-SS AH6225 — ISO turning insert for stainless steels, PVD-coated carbide (Tungaloy)

A VNMG120404E-SS AH6225 ISO-standard turning insert designed for reliable external and internal turning of stainless steels, offering a sharp yet robust cutting edge for medium machining and variable conditions.

• PVD-coated carbide grade AH6225
• Optimised for stainless steels
• Rhombic VNMG, 35° cutting angle
• Cylindrical-hole design for secure clamping

Precise edge control for consistent stainless-steel machining

The PVD-coated carbide grade AH6225 delivers a sharp, stable cutting edge that resists built-up edge formation during challenging stainless-steel operations. The integrated SS chipbreaker promotes predictable chip formation and evacuation, reducing heat concentration at the cutting zone and lowering the risk of surface smearing. With a 0° rake and a 0.4 mm radius, the geometry supports repeatable part tolerances and a balance between edge strength and finish quality. This combination yields reduced rework and consistent cycle times in both interrupted and continuous cuts.

ISO compatibility and straightforward toolset integration

Manufactured to ISO standards, the insert fits holders that match form, relief angle, tolerance class, clamping style, size and thickness. The rhombic VNMG shape and cylindrical hole enable secure, repeatable clamping, while the plate thickness of 4.76 mm contributes to rigidity in heavier cuts. The ISO designation simplifies inventory and replacement planning across mixed-machine environments. Clear geometric specifications allow predictable tool path programming and fast, safe insert changes, reducing downtime and supporting stable production flow.

Robust performance across varying conditions

Designed for medium machining and fluctuating cutting conditions, the PVD-coated surface improves wear resistance and reduces edge adhesion. The insert sustains performance when feeds or depths vary, helping to maintain surface finish and dimensional accuracy across batches. The grade’s balanced toughness and hardness extend tool life under assorted workpiece hardness and alloy compositions commonly encountered in stainless-steel turning. As a result, operating costs fall through fewer indexings and longer intervals between replacements.

Practical advice for efficient use and longer tool life

Select feeds and speeds that match the material grade and toolholder rigidity; modest increases in feed can improve chip control with the SS breaker, while conservative speeds often limit heat-related wear on stainless steels. The rhombic VNMG geometry with a 35° cutting angle suits both external profiling and internal shoulder turning when paired with appropriate holders. For stable results, ensure correct clamping torque and use matching underplates and screws to preserve insert position and repeatability. For complex setups or optimised cutting data, technical guidance is available from Metav Werkzeuge.

Contact Metav Werkzeuge today for tailored cutting data and ordering assistance for Tungaloy AH6225 VNMG inserts — email info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: 6903228
• Manufacturer SKU: TUN6903228
• SKU: 6903228-Tungaloy
• Manufacturer: Tungaloy
• Model series: ISO turning indexable inserts

Core specifications

• Size: 12 mm
• Thickness: 4.76 mm
• Corner radius: 0.4 mm
• Cutting angle: 35°
• Relief angle: 0°
• Hole: with cylindrical hole

Materials & features

• Material: carbide
• Grade/coating: AH6225 (PVD-coated)
• Chipbreaker: SS
• Shape: rhombic (VNMG)
• Application: turning (external and internal)

FAQ

What materials is this insert suitable for?
The VNMG120404E-SS AH6225 is optimised for stainless steels, offering good chip control and edge stability when turning austenitic and other stainless alloys.

Can the insert be used for internal and external turning?
Yes, the rhombic VNMG form and secure cylindrical-hole clamping make the VNMG120404E-SS AH6225 suitable for both external profiling and internal shoulder work when used with the correct holder.

What does the SS chipbreaker mean for machining?
The SS chipbreaker on the AH6225 grade promotes short, manageable chips and consistent evacuation, which improves process reliability and reduces the risk of chip entanglement.

Which dimensions are critical when matching a holder?
Match form, relief angle, tolerance class, clamping method, size (12 mm) and thickness (4.76 mm) of the insert to the holder to ensure correct fit and repeatable performance.

How does the AH6225 grade affect tool life and finish?
AH6225 (PVD-coated) balances toughness and wear resistance for medium machining, extending tool life under varying conditions while maintaining a high-quality surface finish.

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.