SNMG 120408 AH120 Wendeplatten - Tungaloy

Benefit from the combination of PVD-coated carbide for high wear resistance and a 0° relief geometry that supports stable machining and predictable tool life; choose the matching chipbreaker and holder for optimal performance. Order the SNMG120408 AH120 insert directly via Metav Werkzeuge or ask our consultants for application advice.

SNMG120408 AH120 Tungaloy turning insert — PVD-coated carbide, 0° clearance

SNMG120408 AH120 is an ISO-class turning indexable insert intended for external and internal turning where a sharp cutting edge and process reliability are required

• PVD-coated carbide for high wear resistance
• Sharp cutting edge for consistent process security
• Double-sided chipbreaker for versatile chip control
• ISO-standard form with cylindrical hole for fitting

Engineered for dependable, productive turning

The SNMG120408 insert combines a PVD-coated surface with a robust carbide substrate to deliver consistent cutting performance under continuous production conditions. The coating improves surface hardness and thermal stability, which reduces flank wear and extends service intervals—resulting in longer tool life and fewer tool changes. This translates directly into higher machine utilisation and improved cost-efficiency per component when compared with uncoated or less optimised grades.

Designed for straightforward integration and flexibility

Compatibility is ensured by the ISO geometry and the insert’s square form, allowing confident pairing with a wide range of ISO holders and boring bars. The ISO-standard design, together with the cylindrical hole and fixation features, simplifies mounting and replacement in standard clamping systems. The double-sided chipbreaker provides the option to reverse or rotate the insert for renewed cutting edges, which supports uninterrupted production and predictable maintenance planning rather than frequent tooling adjustments.

Geometry and coating explained for reliable results

Key dimensions such as the radius 0.8 mm, 4.76 mm thickness and the 90° included angle influence both cutting forces and surface finish: a 0.8 mm nose radius balances edge strength and achievable finish, while the plate thickness enhances rigidity in heavy or interrupted cuts. The 0° clearance reduces side relief and is suited to operations where toolholder geometry and workpiece support allow neutral clearance; selection should match the machine setup and intended cutting strategy. The PVD coating enhances wear resistance and helps maintain a sharp cutting edge, particularly beneficial when process security and repeatable results are priorities.

Practical selection advice for consistent performance

For standard turning operations, select the AH120 grade when priority is given to wear resistance and resistance to chipping under moderate to demanding conditions. Match the chipbreaker style and grade to the workpiece material and the rigidity of the setup to ensure stable chip formation and reduce the risk of edge failure. In a typical system configuration the insert is used with an appropriate external holder or boring bar, clamped with a support pad and clamping set, and secured using the correct screws—spares should be kept on hand to minimise downtime and sustain production flow.

Contact Metav Werkzeuge for tailored advice on integrating Tungaloy turning inserts into production; experts can recommend holder compatibility and optimised cutting parameters — eMail: info@metav-werkzeuge.com | Tel: +49 2822 7131930

Technical Data

• Manufacturer article number: 6810257
• SKU: 6810257-Tungaloy
• Manufacturer SKU: TUN6810257

Facts

• Size: 12 mm
• Thickness: 4.76 mm
• Corner radius: 0.8 mm
• Relief angle: 0°
• Included angle: 90°

Special features

• Grade: AH120
• Coating: PVD-coated
• Material: carbide
• Shape: square
• Hole: cylindrical hole
• Chipbreaker: double-sided
• Model series: ISO turning indexable inserts
• Application: turning

FAQ

What materials is this insert suitable for?
The AH120 grade is a wear- and chipping-resistant PVD-coated carbide designed for a broad range of steels and general turning tasks; confirm specific material compatibility when choosing chipbreaker and cutting data.

How does the 0° relief affect performance?
A 0° clearance reduces side relief and increases contact area between insert and workpiece, which may enhance stability in supported setups; selection should consider holder geometry and cutting conditions for the best results.

Can the insert be indexed to a fresh cutting edge?
Yes, the square, double-sided chipbreaker design allows indexing and rotation to restore a sharp edge, extending usable life and maintaining consistent cutting behaviour.

What are the key dimensions to check for holder compatibility?
Verify the ISO designation (SNMG 120408), the 12 mm size, 4.76 mm thickness, the cylindrical hole style and the corner radius 0.8 mm to ensure proper fit and secure clamping.

Which system components are required for a complete setup?
A typical system comprises the ISO insert, a matching external holder or boring bar, a support pad/clamp set and the appropriate replacement screws for secure fixation.

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.