CCMT 120404 T9215 Wendeplatten - Tungaloy

Take advantage of a CVD‑coated carbide grade that combines high wear resistance with breakage reliability and an ISO rhombic form that ensures straightforward compatibility with standard holders; order the insert via Metav Werkzeuge or contact their consultants for machining advice.

CCMT120404 T9215 indexable turning insert — ISO turning insert for medium steel by Tungaloy

A CCMT120404 T9215 indexable insert designed for precision external and internal turning, offering an 80° rhombic geometry and a 0.4 mm nose radius for controllable surface finish and productivity

• CVD‑coated carbide T9215 for steel machining
• 80° rhombic geometry for stable clamping
• 0.4 mm nose radius for fine surface control
• Single‑sided chipbreaker for predictable chips

Optimised performance for medium steel turning

The CVD‑coated T9215 grade is engineered as a first choice for medium steel machining, marrying high wear resistance with reliable fracture toughness. This combination supports consistent tool life in continuous and lightly interrupted cuts, reducing unplanned tool changes and helping to maintain production flow. The rhombic insert geometry with its 80° included angle provides a broad contact area in the holder, which contributes to vibration damping and steady cutting forces for improved dimensional control.

Designed geometry that aids machining stability

An 80° rhombic shape together with a 0.4 mm nose radius and a 7° clearance angle delivers a balance between edge strength and surface quality. The moderate nose radius helps achieve a smooth finish without excessive cutting forces, while the clearance angle prevents rubbing on the workpiece. The insert’s thickness of 4.76 mm and standard ISO form ensure secure clamping; compatibility is determined by form, clearance, tolerance class, fastening and size, making integration with standard turning holders straightforward.

Practical chip control and hole design for secure fixing

The insert features a single‑sided chipbreaker, optimised for chip formation in typical turning operations on steel, and comes with a hole featuring a cylindrical bore and a one‑sided countersink (40°–60°) to match conventional mounting screws. This arrangement promotes predictable chip evacuation and reliable mechanical clamping, supporting repeatable setup and reducing the risk of insert movement under load. Where chip shape is critical, the single‑sided breaker delivers a consistent chip curl suited to general‑purpose turning.

Material and coating advantages explained

Made from cemented carbide and finished with a CVD coating identified by the T9215 grade, the insert offers a hard, wear‑resistant surface with a substrate that resists chipping. CVD coating provides a thin, adherent layer that improves resistance to abrasive wear and thermal effects during cutting, which is particularly beneficial during longer production runs. For operations requiring a compromise between tool life and cost‑effectiveness, this grade delivers predictable performance across a broad range of steels.

Application and system integration

The insert is part of the ISO turning insert series and is suitable for both external and internal turning when matched with the correct external holder or boring bar. The system consists of the ISO insert, a compatible external holder or bar, a seat or clamp set and replacement screws. Selecting the appropriate chipbreaker and grade according to workpiece material, machining type and setup stability is essential to achieve the stated benefits: lower cycle times, consistent surface finish and extended tool life.

For orders or tailored recommendations for the T9215 grade, contact Metav Werkzeuge for parts availability and machining consulting at info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Manufacturer article number: 6774007
• SKU: 6774007-Tungaloy
• Manufacturer SKU: TUN6774007
• Model series: ISO‑Drehwendeschneidplatten
• Material: carbide

Facts

• ISO designation: 120404
• Size: 12 mm
• Thickness: 4.76 mm
• Nose radius: 0.4 mm
• Clearance angle: 7°
• Included angle: 80°

Special features

• Shape: rhombic
• Coating / grade: T9215 CVD‑coated carbide
• Chipbreaker: single‑sided
• Hole: with hole; cylindrical hole + one‑sided countersink (40°–60°)
• Typical application: turning (external and internal)

FAQ

What workpiece materials is this insert suited for?
The CCMT120404 T9215 insert is optimised for medium steel machining; the T9215 grade provides wear resistance and toughness suitable for continuous to lightly interrupted cuts.

Which holders are compatible with the CCMT120404 format?
Compatibility follows ISO standards: the insert fits holders matching the CCMT120404 form, clearance angle, tolerance class, fastening method, size and thickness; verify holder specifications against the ISO designation.

How does the T9215 coating affect performance?
The CVD‑coated T9215 combines a wear‑resistant surface with a tough substrate, improving tool life under abrasive conditions while maintaining edge stability for repeatable performance.

What is the purpose of the cylindrical hole with countersink?
The insert’s hole and one‑sided countersink (40°–60°) ensure secure mechanical fixing to the seat and allow standard clamping screws to locate and clamp the insert reliably during turning operations.

Can this insert handle interrupted cuts?
Yes; the T9215 grade is suitable for continuous and lightly interrupted cutting. For heavily interrupted cuts, consider assessing edge robustness and selecting an appropriate grade or geometry.

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.