CNMG 120404 AH6225 Wendeplatten - Tungaloy

Benefit from the combination of a PVD-coated carbide grade AH6225 and a 0.4 mm corner radius for consistent, reliable turning of stainless steels; the result is stable cutting performance and predictable tool life. Order the insert directly via Metav Werkzeuge or consult the team for application advice.

CNMG 120404 AH6225 — Turning insert (CNMG120404) by Tungaloy, PVD-coated carbide, 0.4 mm radius

A CNMG120404 AH6225 indexable turning insert designed for machining stainless steels, offering a sharp yet stable cutting edge for medium finishing and varying machining conditions.

• PVD-coated carbide grade AH6225
• Universal grade for stainless steel machining
• 0.4 mm corner radius for consistent surface finish
• Double-sided chipbreaker, rhombic CNMG form

Consistent cutting performance for stainless steels and mixed conditions

The AH6225 grade is a PVD-coated carbide engineered for a combination of edge sharpness and robustness, delivering reliable performance when machining stainless steel. The coating enhances wear resistance and reduces built-up edge formation under variable feeds and speeds, which leads to a steadier surface finish and longer intervals between indexings. In practical terms, this means fewer unscheduled tool changes and more predictable cycle times on medium finishing operations. The insert’s balanced design helps maintain a stable cutting edge even when conditions change, supporting process reliability in batch production or mixed lots.

ISO CNMG geometry for straightforward holder compatibility and quick replacement

The rhombic CNMG form follows ISO dimensions, ensuring compatibility with standard ISO CNMG toolholders when form, relief angle, tolerance class, fastening, size and thickness match. The presence of a cylindrical hole simplifies clamping and orientation, while the ISO sizing (CNMG120404) supports rapid interchangeability across machines with standard clamping systems. Using ISO-compliant holders and the correct clamping set reduces setup time and the risk of misapplication. This standardisation aids workshop logistics and inventory management by making the insert suitable for many established tool systems.

Application guidance: when to use this grade and how to get the best results

With a 0.4 mm corner radius and a double-sided chipbreaker, this insert is optimised for medium finishing passes and operations where chip control for stainless steels is critical. The small corner radius favours fine surface quality and dimensional control; heavier cuts may require a larger radius. The double-sided design permits indexability to extend usable edge life and improve economics. For best results, pair the insert with a rigid holder, appropriate cutting parameters for stainless steel, and cooling strategies that suit the workpiece and machining environment. The combination of material, coating and geometry delivers productive machining with consistent surface integrity and repeatable results.

For tailored recommendations on machining parameters or to order the CNMG120404 AH6225 insert from Tungaloy, contact Metav Werkzeuge — email info@metav-werkzeuge.com or call +49 2822 7131930 for fast, application-oriented advice.

Technical data

• Article number: 6825074
• Manufacturer: Tungaloy
• Manufacturer SKU: TUN6825074
• Model series: ISO-Drehwendeschneidplatten
• ISO designation: CNMG120404

Facts

• Corner radius: 0.4 mm
• Included angle: 80°
• Insert size: 12 mm
• Thickness: 4.76 mm

Special features

• PVD-coated carbide grade AH6225
• Rhombic CNMG insert form
• Double-sided chipbreaker
• Cylindrical hole for fastening
• Suitable for stainless steels
• Designed for medium finishing and variable conditions

FAQ

What materials is this insert intended for?
The CNMG120404 AH6225 insert from Tungaloy is formulated primarily for stainless steels, offering a balance of edge sharpness and durability for medium finishing tasks; refer to the grade AH6225 properties for specific alloy considerations.

What is the corner radius and how does it affect application?
This insert has a 0.4 mm corner radius, which favours consistent surface finish and dimensional accuracy in finishing passes while limiting vibration risk on small diameters.

Is the insert indexable on both sides?
Yes, the CNMG120404 AH6225 is double-sided with a symmetrical chipbreaker, allowing two indexed edges per side to extend usable tool life.

Which holders are compatible with this insert?
Compatibility depends on ISO CNMG holder form, relief angle (0° relief specified), tolerance class, fastening method and insert thickness; using a matching ISO CNMG holder and proper clamping ensures correct fit and performance.

How does the PVD coating benefit machining performance?
The PVD coating on the AH6225 grade improves wear resistance and reduces adhesion tendencies on stainless steels, resulting in longer edge life and more stable cutting conditions.

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.