SNMG 120408 AH6225 Wendeplatten - Tungaloy

The combination of a sharp, PVD‑coated AH6225 grade and ISO‑compliant geometry delivers stable cutting performance and predictable tool life for medium turning of stainless steels; order directly via Metav Werkzeuge or consult the technical team for process optimisation.

SNMG 120408 AH6225 Tungaloy indexable insert for turning — PVD‑coated carbide, 90°

SNMG120408 AH6225 is an ISO‑specified indexable turning insert designed for medium finishing of stainless steels and adaptable to standard external and internal turning applications.

• SNMG120408 geometry, ISO-compatible
• PVD-coated carbide grade AH6225
• 0.8 mm corner radius for consistent edge
• Double-sided chipbreaker with cylindrical hole

Consistent cutting performance for stainless steels

The SNMG120408 AH6225 insert is specified for medium machining where a balance of sharpness and edge stability is required. The PVD coating on the carbide substrate reduces adhesion and wear when machining stainless steels, helping to lower the risk of built‑up edge and stabilise cutting forces. This results in a predictable tool life and more consistent part geometry over extended production runs, which supports higher first‑pass yield and fewer tool changes.

Compatibility and secure mounting for production use

ISO compatibility means the geometry and mounting dimensions are standardised; compatibility to a holder is determined by form, clearance angle, tolerance class, fastening method, size and thickness. The insert is supplied in a square form with a cylindrical hole and a 90° insert angle, making it suitable for common external holders and boring bars. The 12 mm seat and 4.76 mm thickness give robust support in the pocket, and the double‑sided design halves the effective tooling cost per edge compared with single‑edged solutions.

Practical application advice to improve cycle times

For reliable chip control and surface integrity, pair the AH6225 grade with the appropriate chipbreaker style and machining parameters: the double‑sided breaker is suited to variable conditions and mixed stability operations. External and internal turning operations benefit from a 0.8 mm corner radius where improved edge strength is needed without compromising surface finish. Where chatter or low rigidity is present, opt for lower feeds and ensure holder overhang is minimised to keep cutting forces stable.

Productivity, economics and surface quality

Selecting the right combination of insert grade and geometry delivers measurable cost benefits: stable chip formation and fewer interruptions translate into increased machine uptime and improved surface finish, while the PVD layer contributes to consistent edge retention. The insert’s specification supports productive machining with lower tooling consumption per part, making it a cost‑effective choice for batch production and mixed‑batch environments where repeatability and process safety are priorities.

Discuss your application with Metav Werkzeuge to confirm suitability and secure prompt supply; our technical advisors are available to recommend optimal holder pairings and cutting data for the Tungaloy SNMG120408 AH6225 insert — contact Metav Werkzeuge at info@metav-werkzeuge.com or +49 2822 7131930

Technical data

• Article number: 6826081

• SKU: 6826081-Tungaloy

• Manufacturer SKU: TUN6826081

• Model series: ISO-Drehwendeschneidplatten

• Material: Hartmetall

Facts

• ISO designation: SNMG120408

• Size: 12 mm

• Thickness: 4.76 mm

• Corner radius: 0.8 mm

• Clearance angle: 0°

• Insert angle: 90°

• Hole: cylindrical

Special features

• Coating: PVD

• Grade: AH6225

• Chipbreaker: double-sided

• Application: Turning; suited to stainless steels

• Geometry: square, hole-mounted

FAQ

What operations is this insert intended for?
The SNMG120408 AH6225 insert is intended primarily for external and internal turning, optimised for medium finishing operations and process conditions encountered when machining stainless steels.

How is holder compatibility determined?
Compatibility with a holder is determined by insert form, clearance angle, tolerance class, fastening method, size and thickness; the SNMG120408 follows ISO dimensions to fit standard turning holders.

What advantages does the AH6225 grade offer?
The AH6225 grade is a universal PVD‑coated carbide designed for a sharp yet stable cutting edge on stainless steels, providing good wear resistance and reliable chip formation under variable conditions.

Is the insert double‑sided and does it save cost?
Yes, the insert is double‑sided with a cylindrical hole, which provides two cutting edges and improves cost efficiency per edge compared with single‑edged inserts.

Which corner radius suits general finishing?
The 0.8 mm corner radius offers a compromise between edge strength and surface integrity, suitable for medium finishing where a robust edge is required without excessive tool pressure.

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.