TNMG 160408 AH6225 Wendeplatten - Tungaloy

Combining the AH6225 PVD-coated carbide grade with the TNMG160408 geometry delivers a stable cutting edge and broad suitability for stainless-steel turning; benefit from reliable edge life and straightforward tool indexing for continuous production. Order the insert directly via Metav Werkzeuge or ask our consultants for application support.

TNMG 160408 AH6225 indexable turning insert — PVD-coated carbide, 60° geometry, Tungaloy

A TNMG160408 AH6225 indexable insert designed for external and internal turning operations, optimised for stainless steels and medium-duty, variable cutting conditions

• PVD-coated carbide grade AH6225
• 60° triangular insert geometry
• 0.8 mm corner radius for edge strength
• Double-sided chipbreaker, cylindrical hole

Consistent edge life with a universal PVD carbide grade

The AH6225 grade combines a PVD coating with a robust carbide substrate to balance sharpness and wear resistance. This composition is aimed at reliable performance in turning stainless steels, where work-hardening and variable cutting forces demand a stable cutting edge. The coating reduces built-up edge and improves surface finish under changing conditions, while the carbide substrate sustains the edge at moderate cutting speeds. The outcome is predictable tool life and fewer unplanned insert changes, supporting continuous machining and reduced process interruptions.

Geometry and clamping deliver repeatable accuracy

The triangular 60° geometry and 0.8 mm corner radius provide a compromise between strength and cutting-line precision: the radius increases edge robustness while preserving dimensional control. The insert is double-sided, offering multiple usable edges before indexing, and features a cylindrical hole for secure mounting. Compatibility with a holder depends on geometry, relief angle, tolerance class, clamping method, size and thickness; the series is ISO-standardised to simplify selection and interchangeability within established tool systems. A 4.76 mm thickness adds rigidity for stable cuts.

Application advantages for turning stainless steels

Designed for both external and internal turning, this indexable insert handles the typical demands of stainless-steel machining such as work-hardening and adhesive tendencies. The chipbreaker design supports controllable chip formation, reducing the risk of entanglement and improving surface integrity. In practice, this translates into longer intervals between tool changes and more consistent component quality. Process planners will value the combination of predictable cutting behaviour and the option to match chipbreaker and grade to material and machine stability.

System setup and economic considerations

The product forms part of a complete turning system: an ISO indexable insert mounted in a compatible external holder or boring bar, with a backing pad, clamp set and replacement screws as required. Using a PVD-coated carbide insert such as this can reduce overall machining costs by extending insert life and improving uptime. Selection of chipbreaker and grade should be aligned with workpiece material, machining strategy and machine rigidity to extract the best cycle-time and surface-quality benefits while keeping tool-change events to a minimum.

For stainless-steel turning applications, specify the TNMG160408 AH6225 indexable insert from Tungaloy and contact Metav Werkzeuge for application advice or availability at info@metav-werkzeuge.com or +49 2822 7131930

Technical data

• Article number: 6827581
• Manufacturer SKU: TUN6827581
• SKU: 6827581-Tungaloy
• Model designation: TNMG160408 AH6225

Facts

• Corner radius: 0.8 mm
• Lead angle: 60°
• Relief angle: 0°
• Thickness: 4.76 mm
• Size: 16 mm
• Hole style: cylindrical hole

Special features

• PVD-coated carbide (AH6225)
• Double-sided chipbreaker
• Triangular insert form (TNMG)
• ISO indexable turning insert
• Suited for external and internal turning
• Compatible with matching holders, backing pads and clamp sets

FAQ

Which materials is this insert best suited for?
The TNMG160408 AH6225 insert is formulated for machining stainless steels and performs well under medium cutting conditions where a balance of sharpness and edge stability is required.

How many cutting edges are available per insert?
The insert is double-sided and triangular, providing multiple usable edges before indexing; the exact number depends on orientation and whether all corners are utilised.

What does the AH6225 grade offer compared with other grades?
AH6225 is a PVD-coated carbide grade developed for a stable cutting edge in variable conditions; it aims to combine wear resistance with good surface finish for stainless-steel turning.

Which holder characteristics must be checked for compatibility?
Compatibility is determined by insert form, relief angle, tolerance class, clamping method, size and thickness; matching these parameters ensures correct seating and secure clamping.

Why is the corner radius important for component quality?
A 0.8 mm corner radius increases edge strength and reduces chipping risk, helping to maintain dimensional accuracy and improve surface integrity during turning.

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.