VNMG 120412 AH6225 Wendeplatten - Tungaloy

Take advantage of the combination of a PVD-coated carbide grade optimised for rostfreiem Stahl and the ISO VNMG form for straightforward toolholder compatibility, ensuring stable cutting and predictable tool life; order genuine Tungaloy inserts directly via Metav Werkzeuge or consult their specialists for application-specific advice.

VNMG120412E-PM AH6225 – ISO indexable turning insert for turning applications (Tungaloy)

The VNMG120412E-PM AH6225 is an ISO-standard rhombic turning insert designed for external and internal turning, featuring a PVD-coated carbide grade tuned for medium machining of stainless steels.

• PVD-coated carbide AH6225
• Universal grade for stainless steels
• ISO VNMG120412E form, 1.2 mm radius
• Cylindrical hole for secure clamping

Consistent cutting performance on stainless steels

The PVD-coated carbide grade AH6225 combines a sharp, stable cutting edge with a wear-resistant surface layer to cope with the challenges of rostfreiem Stahl machining. The coating improves heat resistance and reduces built-up edge, while the substrate delivers edge stability under interrupted cuts. With the chipbreaker PM geometry, the insert supports reliable chip control for medium cutting depths, which contributes to a consistent surface finish and extended insert life without sacrificing cutting action.

Seamless integration into ISO-based tool systems

Manufactured to ISO specifications, the VNMG120412E shape and sizing facilitate quick replacement and compatibility with a wide range of external holders and boring bars. Compatibility is determined by form, 0° clearance angle, tolerance class, fixation method, size and thickness; the rhombic outline with a cylindrical hole ensures secure clamping and positional repeatability. This standardisation reduces tooling complexity and minimises machine downtime during index changes or regrips.

Practical selection and machining guidance for reliable results

Choosing the correct chipbreaker and grade matters: the PM chipbreaker suits variable conditions and mixed cutting parameters, while the 1.2 mm radius balances edge strength with achievable surface quality. An approach geometry near 35° affects cutting force direction and should be considered when setting feeds and depths to avoid chatter. For process stability, match insert geometry to the holder stiffness and select cutting data that favour gradual load changes rather than aggressive instantaneous cuts.

Benefits for production planning and quality control

Using a universal Tungaloy grade simplifies inventory and raises reproducibility across batches: the consistently produced cutting edge and PVD layer result in predictable tool wear and repeatable part tolerances. Where stainless steels are predominant, this insert provides economical throughput by lowering the frequency of tool changes and supporting steady machining cycles under variable conditions, helping to meet surface-finish and dimensional targets with fewer interventions.

For tailored application advice, availability checks or to order genuine Tungaloy VNMG120412E-PM AH6225 inserts, contact Metav Werkzeuge at info@metav-werkzeuge.com or call +49 2822 7131930 to discuss suitability for specific turning operations and holder compatibility

Technical Data

• Manufacturer article number: 6966339
• SKU: 6966339-Tungaloy
• Manufacturer SKU: TUN6966339
• Model series: ISO indexable turning inserts

Core data

• Insert designation: VNMG120412E-PM
• Grade / coating: AH6225 (PVD-coated)
• Corner radius: 1.2 mm
• Plate size: 12 mm
• Thickness: 4.76 mm
• Clearance angle: 0°
• Approach/wedge angle: 35°
• Hole: with cylindrical hole

Design and special features

• Material: carbide
• Chipbreaker: PM
• Plate form: rhombic
• Application: turning (external and internal)
• Compatibility depends on form, tolerance class and clamping

FAQ

What machining tasks is this insert suited for?
The VNMG120412E-PM AH6225 insert is intended for external and internal turning operations, particularly where rostfreiem Stahl (stainless steels) are processed and a balance of sharpness and edge stability is required.

How does the AH6225 grade improve tool life?
AH6225 is a PVD-coated carbide grade engineered to resist heat and adhesion typical when machining rostfreiem Stahl; the combination of coating and substrate stability delivers longer, more predictable service life for the insert.

Which holders are compatible with the VNMG120412E form?
Compatibility follows ISO standards — holders and boring bars matching the VNMG form, size 12 and the insert thickness will accommodate this insert, provided clamping method and tolerance class are aligned.

What is the effect of the 1.2 mm corner radius on part finish?
A 1.2 mm radius increases edge strength and helps maintain dimensional stability under variable cutting loads; it yields a smoother surface than a very small radius while still supporting moderate feed rates.

Is this an original Tungaloy product and how can it be identified?
Yes, this is a genuine Tungaloy insert; it can be identified by the designation VNMG120412E-PM AH6225 and the manufacturer article number 6966339.

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.