TNMG 220412 T9225 Wendeplatten - Tungaloy

Combining CVD-coated carbide toughness, a 60° triangular geometry and a 1.2 mm corner radius, this insert offers a reliable balance of wear resistance and edge strength for medium to heavy steel turning; order directly via Metav Werkzeuge or consult our specialists for fitment and cutting data.

TNMG 220412 T9225 — ISO turning insert by Tungaloy, CVD-coated carbide, 60° triangular

The TNMG220412 T9225 is an ISO-standard triangular turning insert engineered for turning applications where intermittent cuts and variable engagement demand increased toughness and stable chip control, suitable for both external and internal turning operations.

• CVD-coated carbide for improved wear resistance
• Robust universal grade for medium to heavy steel
• 60° triangular form with 1.2 mm corner radius
• Double-sided chipbreaker, cylindrical hole for clamping

Built for reliable steel turning and consistent tool life

The selected grade, T9225, is a CVD-coated carbide designed as a robust universal solution for medium to heavy steel machining. The coating improves wear resistance under continuous cutting, while the substrate provides the toughness needed for slightly interrupted cuts and variable engagement. This combination reduces the frequency of edge failure and contributes to predictable tool life, which in turn supports higher machine utilisation and lower per-part tooling cost. The result is a balance between durability and cutting performance optimised for production environments.

Stable geometry and secure clamping for consistent results

The insert’s 60° triangular shape, 1.2 mm corner radius and 4.76 mm thickness contribute to mechanical stability and repeatable seating in the toolholder. The cylindrical hole enables standard clamping systems to locate and secure the insert reliably. Compatibility with a holder is determined by form, clearance angle (0°), tolerance class, fastening method, size and thickness; matching these parameters ensures correct seating and repeatable cutting geometry. Clear geometric definition helps workshop planners select the correct holder and avoid unexpected vibrations or misalignment.

Effective chip control and economical indexability

Equipped with a double-sided chipbreaker, the insert offers two usable cutting edges per side and can be rotated to restore a fresh edge, lowering tooling expenditure per operating hour. The chipbreaker is optimised for stable chip formation in typical steel turning, contributing to consistent surface finish and safer chip evacuation. These attributes reduce downtime for tool change and cleaning, thereby increasing process throughput. For shops aiming to improve cycle times and reduce tooling overhead, the insert’s indexability and chip-control design deliver tangible efficiency gains.

Application guidance and selection notes for process planners

Intended primarily for turning of steels, the insert performs well in external and internal operations when paired with an appropriate holder and cutting data. Selection of chipbreaker variant and grade should be aligned with the workpiece alloy, surface finish requirements and the stability of the machine setup. Where cutting conditions vary, the T9225 grade provides a reliable compromise between wear resistance and fracture toughness. For best results, combine the insert with a matching ISO-compatible holder and verify cutting speeds and feeds in a short trial to confirm process stability.

Choose Tungaloy quality to boost production reliability — contact Metav Werkzeuge for ordering and tailored cutting advice at info@metav-werkzeuge.com or call +49 2822 7131930

Technical Data

• SKU: 6780853-Tungaloy
• Manufacturer SKU: TUN6780853
• Manufacturer article number: 6780853
• Model series: ISO turning inserts
• Product designation: TNMG220412 T9225 Tungaloy insert
• Material: carbide
• ISO code: 220412
• Shape: triangular
• Hole style: cylindrical hole
• Chipbreaker: double-sided

Core data

• Size: 22 mm
• Thickness: 4.76 mm
• Corner radius: 1.2 mm
• Relief angle: 0°
• Included angle: 60°

Special features

• Grade/coating: T9225, CVD-coated carbide
• Application: turning (external and internal)
• Compatibility determined by form, clearance angle, tolerance class, fastening, size and thickness
• Double-sided indexable insert for cost-effective tool usage

FAQ

What materials is this insert best suited for?
The TNMG220412 T9225 is optimised for machining medium to heavy steel grades; the T9225 grade and CVD coating provide wear resistance and toughness suited to these materials.

Is the insert indexable and how many cutting edges are available?
Yes; the insert features a double-sided chipbreaker, offering multiple indexable cutting edges to extend service life and reduce tooling costs.

Which geometric details matter when matching a holder?
Form, clearance angle (0°), tolerance class, fastening method, size (22 mm) and thickness (4.76 mm) are all decisive for proper fit and stable clamping.

Does this insert support interrupted cutting conditions?
The combination of the T9225 substrate toughness and the CVD coating makes the insert suitable for mildly interrupted cuts and variable engagement typical in many turning processes.

Can the insert be used for both external and internal turning?
Yes; the insert’s triangular geometry and robust chipbreaker make it suitable for both external and internal turning when mounted in a compatible ISO holder.

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.