CNMG 120408 AH6225 Wendeplatten - Tungaloy

Combine ISO conformity, a PVD-coated carbide grade and a 0.8 mm corner radius to achieve reliable stainless steel turning with consistent edge stability and manageable chip control; order the insert directly via Metav Werkzeuge or consult our technical team for application advice.

CNMG120408 AH6225 Tungaloy turning insert – ISO CNMG120408, PVD-coated

The CNMG120408 AH6225 indexable turning insert is designed for external and internal turning, offering a balanced combination of a sharp yet stable cutting edge and ISO compatibility for routine and variable stainless steel machining.

• ISO-certified CNMG geometry
• PVD-coated carbide grade AH6225
• 0.8 mm corner radius for edge stability
• Double-sided insert with cylindrical hole

Proven fit that reduces tool-change downtime

The ISO CNMG120408 geometry ensures straightforward interchangeability across a wide range of holders, since compatibility is defined by form, relief angle, tolerance class, clamping method, size and thickness. That predictability translates to shorter setup times and fewer tool variants in stock, supporting leaner inventory and faster changeovers. The rhombic shape and standard 80° seating further assist consistent orientation and repeatability when replacing an insert in a production environment.

Consistent edge performance for stainless steel turning

The AH6225 grade is a PVD-coated carbide developed as a universal solution for stainless steels, providing a compromise between sharpness and edge robustness for medium machining and fluctuating conditions. Combined with the double-sided chipbreaker, the grade helps maintain a controlled chip flow and stable cutting forces, which often results in improved surface finish and extended life per edge. The 0.8 mm corner radius contributes additional edge strength where interrupted cuts or variable feed conditions occur.

Practical design for secure clamping and economical use

A double-sided construction and a cylindrical hole allow the insert to be indexed to a fresh edge, effectively doubling the number of usable cutting faces and lowering per-edge cost. The 12 mm inscribed circle and 4.76 mm plate thickness are standard measurements that ensure mechanical stability in many commercial holders while keeping the cutting geometry compact. The combination of rhombic form and central hole simplifies clamping and reduces the risk of movement under moderate cutting loads.

Material and coating engineered for repeatable results

Made from quality carbide and finished with a PVD coating, the insert resists abrasive wear and preserves a sharp profile across mixed cutting conditions typical in stainless steel turning. The coating provides thermal and adhesion resistance, increasing process security when feeds and speeds vary or when encountering workpiece inconsistencies. Selecting the matching chipbreaker and the AH6225 grade makes this indexable solution suitable for workshops prioritising steady productivity and reproducible component quality.

For process-stable stainless steel turning with the Tungaloy AH6225 grade, contact Metav Werkzeuge for supply and machining recommendations at info@metav-werkzeuge.com or by phone on +49 2822 7131930 — personalised consultation is available to match chipbreaker and holder geometry to the application.

Technical Data

• Article number: 6903165
• SKU: 6903165-Tungaloy
• Manufacturer SKU: TUN6903165
• Model series: ISO turning indexable inserts
• Grade: AH6225
• Material: Carbide

Facts

• Inscribed circle: 12 mm
• Plate thickness: 4.76 mm
• Corner radius: 0.8 mm
• Cutting angle: 80°
• Relief angle: 0°
• Hole style: cylindrical

Special features

• PVD-coated carbide
• Double-sided chipbreaker
• Rhombic plate form (CNMG)
• ISO CNMG120408 designation
• Compatibility determined by form, relief angle, tolerance, clamping, size and thickness
• Universal grade optimised for stainless steels

FAQ

What is this insert mainly used for?
The CNMG120408 AH6225 insert is intended for external and internal turning operations, particularly when machining stainless steels and when a balance between sharpness and edge stability is required.

How does the AH6225 grade perform on stainless steel?
AH6225 is a PVD-coated carbide grade designed for universal performance on stainless steels; it maintains a sharp cutting edge while offering the stability needed for medium machining and variable conditions.

Can the insert be indexed to use multiple cutting edges?
Yes, the design is double-sided with a cylindrical hole, allowing the insert to be rotated for a fresh edge and effectively increasing the number of usable cutting faces.

Which holders are compatible with this geometry?
Holders compatible with ISO CNMG geometry and matching form, relief angle, tolerance class, clamping method, size and thickness will accept this insert; the ISO designation CNMG120408 is the reference for selection.

Why choose a 0.8 mm corner radius?
A 0.8 mm corner radius gives a compromise between cutting-edge strength and surface finish, helping to withstand interrupted cuts and variable feeds while supporting consistent component quality.

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.