CNMG 120412 T9215 Wendeplatten - Tungaloy

Take advantage of the combination of CVD-coated carbide wear resistance, an 80° ISO rhombic geometry and a 1.2 mm nose radius to maintain stable surface finishes and high productivity in medium steel turning; order directly via Metav Werkzeuge or request application advice from our consultants.

CNMG 120412 T9215 — CNMG turning insert by Tungaloy, 80° rhombic, 1.2 mm radius

The CNMG120412 T9215 is an ISO rhombic turning insert tailored for medium steel applications, combining a CVD-coated carbide grade with a dual-sided chipbreaker for continuous to light interrupted cuts.

• 80° ISO rhombic geometry
• CVD-coated carbide grade T9215
• Dual-sided chipbreaker design
• 1.2 mm nose radius for stable finish

Durable grade and coating for extended tool life

The CVD-coated carbide grade T9215 is formulated for medium steel machining, offering a balanced combination of wear resistance and fracture toughness. This balance supports longer intervals between indexings and reduces unplanned tool changes, improving overall shop-floor productivity. The coating reduces abrasive and adhesive wear mechanisms in typical turning operations, while the base carbide substrate maintains edge integrity under continuous and slightly interrupted cuts. Choosing a grade that prioritises consistent edge stability enables dependable component tolerances in serial production.

Geometry and chip control that improve process reliability

An 80° rhombic geometry with a 1.2 mm nose radius delivers a versatile compromise between strength and surface finish. The rhombic form with a dual-sided chipbreaker ensures reliable chip formation across a range of feed rates and depths of cut, which eases chip evacuation and minimises rework. Compatibility with the correct clamping and holder is essential: insert fit depends on form, clearance angle, tolerance class, fastening method, size and thickness. The insert is produced with a cylindrical hole to suit standard clamping systems and is indexed to maximise the number of usable edges, therefore lowering tooling costs per part.

Practical advantages for turning operations and process selection

Intended for external and internal turning, this indexable insert performs best in continuous to light interrupted cuts and is particularly effective on medium steels where a mix of abrasion and occasional notch loading occurs. The T9215 grade helps maintain cutting-edge shape during longer cycles, supporting stable cutting forces and consistent surface quality. For users unfamiliar with coating technology: a CVD coating is applied to the substrate to provide a hard, wear-resistant layer that protects the cutting edge and delays flank and crater wear, thereby contributing to predictable tool life and fewer in-process interventions.

System considerations and economical handling in production

The ISO-series insert is designed to integrate into a complete system—external holder or boring bar, shim/clamping set and spare screws—so process planners can assemble a robust cutting arrangement quickly. The insert’s rhombic shape and standardised sizing make it straightforward to replace and index, which reduces downtime and handling complexity. Manufactured by Tungaloy, this grade is aimed at users seeking repeatable performance and stable chip control; in practice, fewer tool changes and predictable wear patterns translate into lower cost per component and greater throughput. For machines where vibration or heavy interruptions are expected, selecting an appropriate chipbreaker variant or a different grade is advised.

For reliable medium-steel turning choose the Tungaloy T9215 grade and contact Metav Werkzeuge for compatibility checks and application recommendations via info@metav-werkzeuge.com or +49 2822 7131930.

Technical data

• Article number: 6772182
• Manufacturer SKU: TUN6772182
• Supplier SKU: 6772182-Tungaloy
• Designation: CNMG120412 T9215 Tungaloy insert

Facts

• Size: 12 mm
• Thickness: 4.76 mm
• Nose radius: 1.2 mm
• Clearance angle: 0°
• Insert angle: 80°

Special features

• Material: carbide
• Grade/coating: T9215, CVD-coated
• Application: turning, external and internal
• Chipbreaker: double-sided
• Shape: rhombic
• Hole: with cylindrical hole
• Series: ISO turning inserts
• System components: external holder or boring bar, shim/clamp set, replacement screws

FAQ

Which materials is this insert optimised for? The CNMG120412 T9215 insert is optimised for medium steel machining and combines carbide substrate and a CVD coating to handle typical abrasion and occasional notch loads encountered in steel turning.

Is the insert indexed and how is the chipbreaker configured? The insert is double-sided with a dual-sided chipbreaker design, allowing indexing of additional cutting edges to extend usable life while maintaining consistent chip control.

How to ensure compatibility with the toolholder? Compatibility is determined by holder form, clearance angle, tolerance class, fastening, size and thickness; check the holder matches the ISO CNMG form and the insert’s 4.76 mm thickness and cylindrical hole.

Can this insert cope with interrupted cuts? The grade and chipbreaker are suitable for continuous to light interrupted cuts; for heavy interruptions a more robust grade or shock-resistant geometry is recommended.

What benefits does the CVD coating provide in practice? A CVD coating on the T9215 grade improves wear resistance and reduces flank and crater wear, which supports longer edge life and more consistent surface finishes during series turning.

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.