DNMG 150408 AH6225 Wendeplatten - Tungaloy

Take advantage of a PVD-coated carbide grade optimised for stainless steel machining and a stable 55° rhombic geometry to achieve consistent tool life and reliable surface finish; order the inserts or request application guidance via Metav Werkzeuge.

DNMG150408 AH6225 ISO turning insert, PVD-coated carbide (55°) — Tungaloy

The DNMG150408 AH6225 is an ISO-standard rhombic turning insert engineered for external and internal turning of stainless steels and other challenging alloys.

• PVD-coated carbide grade AH6225
• Rhombic 55° cutting geometry
• Double-sided with 0.8 mm corner radius
• Cylindrical hole for secure clamping

Efficient cutting performance for stainless steels

The DNMG150408 AH6225 insert combines a PVD-coated surface with a wear-resistant carbide substrate to provide a sharp yet durable cutting edge suited to medium-duty turning. The AH6225 grade is formulated for reliable performance on stainless steel, enabling stable chip formation and predictable flank wear under varying cutting conditions. The 55° included angle balances edge strength and accessibility, while the 0.8 mm corner radius supports repeatable component tolerance without excessive cutting forces. These characteristics translate into fewer tool changes and consistent cycle times on production and job-shop turning operations.

Clear compatibility and mounting guidance

As an ISO-standard insert, compatibility with a toolholder depends on the insert form, clearance angle, tolerance class, fastening method, size and thickness. The rhombic shape with a cylindrical hole provides a secure interface with most DNMG-capable holders; the specified 0° relief angle and plate thickness of 4.76 mm must be matched to the clamping system. When selecting a holder and shim, consider the recommended tolerance class and the insert’s double-sided configuration to make full use of both cutting edges. For precise holder matching and cutting-parameter recommendations, Metav Werkzeuge can supply technical data and guidance.

Better chip control and surface quality

The double-sided chipbreaker on this insert is designed to manage chips during both external and internal turning, reducing risk of built-up edge and improving surface finish. Controlled chip formation lowers the likelihood of scratches or rework and makes coolant and chip evacuation more effective in confined bores. By choosing the correct chipbreaker and matching feed and speed to the material, the machining process benefits from improved surface finish and extended tool life, which supports productivity and repeatability in batch production.

System thinking for predictable productivity

The insert is part of a system that includes the ISO plate, an appropriate outside holder or boring bar, shims/clamp set and replacement screws; correct system selection reduces setup time and enhances process security. The AH6225 PVD coating contributes to thermal and tribological stability, while the carbide core maintains edge robustness. For complex or high-value components, consult technical advice to define cutting data and toolpaths. If further specification or cutting tests are required, Metav Werkzeuge is available by email at info@metav-werkzeuge.com or by phone on +49 2822 7131930 to support application-specific questions.

For application-specific recommendations on Tungaloy turning inserts and to check stock or delivery options, contact Metav Werkzeuge — technical advisors can assist with grade and holder selection

Technical data

• Article number: 6947092
• SKU: 6947092-Tungaloy
• Manufacturer SKU: TUN6947092
• Manufacturer: Tungaloy
• Model series: ISO turning indexable inserts

Core specifications

• Corner radius: 0.8 mm
• Included angle: 55°
• Relief angle: 0°
• Plate thickness: 4.76 mm
• Plate size: 15 mm
• Hole style: cylindrical

Design & features

• Shape: rhombic
• Chipbreaker: double-sided
• Coating / grade: AH6225 (PVD-coated)
• Material: carbide
• Application: turning (external and internal)
• ISO designation: DNMG150408

FAQ

What materials is this insert best suited for?
The DNMG150408 AH6225 insert is optimised for stainless steel and performs well on a broad range of similar alloys when paired with suitable cutting data and coolant strategies.

How does the 55° geometry affect machining?
A 55° rhombic geometry offers a compromise between edge strength and cutting access; it provides good clearance for profile turning while maintaining a robust cutting edge for medium-duty operations with the AH6225 grade.

Can the insert be used on both external and internal turning operations?
Yes, the insert’s rhombic form and double-sided chipbreaker make it suitable for both external and internal turning; ensure the holder and clamping system are compatible with DNMG-type plates.

What does the AH6225 designation mean for wear resistance?
AH6225 denotes a PVD-coated carbide grade designed for a sharp, stable cutting edge on stainless steels, delivering reliable wear resistance and consistent performance across varying cutting conditions.

How to ensure proper clamping and compatibility?
Compatibility depends on insert form, clearance angle, tolerance class, fastening, size and thickness; use a DNMG-compatible holder matched to the 4.76 mm plate thickness and the cylindrical hole for secure clamping.

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.