CNMG 120412 T9205 Wendeplatten - Tungaloy

The CNMG 120412 T9205 combines a wear‑resistant CVD‑coated cemented carbide grade with a standard ISO rhombic form to support productive turning operations; its 1.2 mm corner radius and double‑sided chipbreaker deliver consistent chip control and surface quality. Order the insert directly via Metav Werkzeuge or consult the technical team for application advice.

CNMG 120412 T9205 indexable turning insert for Turning — Tungaloy

CNMG120412 T9205 Tungaloy insert is an ISO‑standard rhombic indexable insert engineered for stable external and internal turning of steel, optimised for higher cutting speeds and wear resistance

• CVD-coated carbide grade T9205
• Optimised for productive steel turning
• Rhombic CNMG 80° form with 1.2 mm radius
• Double-sided chipbreaker, cylindrical hole

Higher productivity through CVD-coated cemented carbide

The combination of a CVD coating and a cemented carbide substrate in grade T9205 is intended to extend tool life under demanding cutting conditions. This surface treatment improves wear resistance at elevated temperatures, enabling higher cutting speeds and longer intervals between index changes. For production environments where cycle time and tool stability determine output, the coated substrate reduces flank wear and helps maintain consistent component tolerances. The result is fewer unscheduled stops and a more predictable process window for series turning.

Predictable fit and interchangeability with ISO standard geometry

Built to the ISO CNMG120412 specification, the insert’s 80° rhombic geometry and defined relief angle ensure compatibility with a broad range of external holders and boring bars. Fit depends on the insert form, relief angle (0°), tolerance class, fastening method, size and thickness; these parameters make replacement straightforward and reproducible on standard toolholders. Using ISO‑compliant components reduces set‑up time and simplifies inventory management, supporting a stable machining process and clear communication across toolroom and production staff.

Geometry that supports surface finish and chip control

The 1.2 mm corner radius and double‑sided chipbreaker are designed to balance strength and finish when turning steel. The corner radius contributes to robust edge strength for interrupted cuts and improved surface integrity, while the chipbreaker directs swarf away from the cutting zone to protect the workpiece and tool flank. The insert’s cylindrical hole and 4.76 mm thickness provide secure clamping, which in turn maintains cutting stability and repeatable geometry across batches. Together these features help achieve consistent surface quality with fewer rework operations.

Operational efficiency and straightforward tool management

A double‑sided indexable design increases the available edges per insert, extending service intervals and reducing tooling overhead. As an ISO‑specified component, the insert supports modular toolsetups and rapid exchange routines, which simplifies maintenance and reduces downtime. The robust grade and chip control features make this insert suitable for stable turning operations on steel where productivity and reproducibility are priorities. For specific machining conditions or to confirm holder compatibility, the Metav Werkzeuge consultancy can provide tailored recommendations and application data.

For demanding steel turning applications, choose the Tungaloy CNMG 120412 T9205 for reliable wear resistance and consistent chip control — contact Metav Werkzeuge for application guidance and availability at info@metav-werkzeuge.com or call +49 2822 7131930

Technical Data

• Article number: 6785687
• Manufacturer SKU: TUN6785687
• SKU: 6785687-Tungaloy
• Model series: ISO‑turning inserts
• Grade/coating: T9205 / CVD‑coated
• Material: cemented carbide
• Shape: rhombic (CNMG)
• Hole: with cylindrical hole

Core data

• Size: 12
• Thickness: 4.76 mm
• Corner radius: 1.2 mm
• Relief angle: 0°
• Insert angle: 80°

Special features

• Double‑sided chipbreaker
• ISO CNMG120412 geometry
• Suitable for external and internal turning
• Optimised for steel machining at higher cutting speeds
• Secure clamping via cylindrical hole

FAQ

What materials is this insert suitable for?
The CNMG120412 T9205 insert is optimised for machining steel, with a CVD‑coated cemented carbide grade designed for wear resistance during productive turning.

Is the insert compatible with standard CNMG holders?
Yes; the insert conforms to ISO CNMG120412 geometry, so compatibility is determined by holder form, relief angle, tolerance class, fastening method, size and thickness.

How does the chipbreaker affect performance?
The double‑sided chipbreaker on the T9205 grade improves chip control and evacuation, supporting consistent surface finish and reducing risk of built‑up edge during stable turning operations.

Can the insert be used for internal boring as well as external turning?
The rhombic ISO geometry and secure clamping make the insert suitable for both external and internal turning applications when used with an appropriate boring bar or holder.

What identification should be used when ordering spare inserts?
Order by the product designation and article details: CNMG120412 T9205 (Tungaloy), article number 6785687 or SKU 6785687‑Tungaloy.

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.