CNMG 120408 T6215 Wendeplatten - Tungaloy

Take advantage of the combination of wear‑resistant CVD coating, reliable chip control and ISO compatibility for consistent, productive turning of stainless steels — order the insert directly via Metav Werkzeuge or consult our specialists for application advice.

CNMG 120408 T6215 — Tungaloy indexable turning insert, CVD‑coated carbide, 0.8 mm corner radius

The CNMG 120408 T6215 is an ISO‑standard rhomboid indexable insert developed for external and internal turning, optimised for stable to mildly interrupted cutting of stainless steel materials.

• CVD‑coated carbide for wear resistance
• Optimised for stainless steel turning
• Double‑sided chipbreaker for consistent chips
• 0.8 mm corner radius with cylindrical hole

Improved process reliability for stainless‑steel turning

The ISO‑format insert, specified as ISO CNMG 120408, combines a CVD‑coating and a hardmetal substrate to deliver consistent tool life in demanding conditions. The chosen grade, T6215, is formulated for resistance against the built‑up edge and flank wear that typically occur when machining stainless steels. This leads to fewer tool changes and a more predictable production rhythm, which in turn supports higher machine utilisation and lower unit costs. The rhomboid geometry with a 0.8 mm corner radius provides a balance between strength at the cutting edge and the ability to achieve the required outline on turned components.

Durable coating and substrate reduce downtime

A CVD‑coated carbide substrate is used to combine abrasion resistance with edge toughness. The coating resists adhesive wear common in stainless‑steel turning, while the substrate maintains edge stability under intermittent cutting. As a result, the insert sustains surface quality over longer tool life and reduces the frequency of regrinds or replacements. The double‑sided design doubles the available cutting edges per insert, which contributes directly to lower tooling cost per component and simplified inventory management on the shop floor.

Predictable chip formation and surface finish

Equipped with a double‑sided chipbreaker, the insert produces controlled chip formation across a range of feed rates and depths of cut. Controlled chips mean safer handling, reduced risk of workpiece damage and more consistent coolant action at the cut zone. The cylindrical hole and rhomboid form ensure secure clamping in ISO holders; the insert is compatible where form, clearance angle, tolerance class, fastening method, size and thickness match the toolholder, making it straightforward to integrate into existing tool systems.

Practical handling and holder compatibility

The insert is designed for straightforward mounting in standard ISO turning holders or boring bars; compatibility is determined by plate shape, thickness and fastening. The 0° clearance angle and the presence of a cylindrical hole with secure fixing ensure repeatable seating and orientation, which supports repeatable component accuracy. For workshops aiming to streamline tooling changes, the double‑sided feature and ISO conformity reduce set‑up time and simplify tool planning, especially where multiple machine tools share the same holder types.

Contact Metav Werkzeuge for expert advice on selecting the right Tungaloy turning insert for specific stainless‑steel applications and to arrange supply of the CNMG 120408 T6215 with SKU TUN6875317

Technical data

• Article number: 6875317
• Manufacturer SKU: TUN6875317
• Brand SKU: 6875317-Tungaloy
• Model series: ISO‑Drehwendeschneidplatten
• Material: Hartmetall
• Grade: T6215
• Format designation: CNMG120408

Core dimensions

• Corner radius: 0.8 mm
• Plate thickness: 4.76 mm
• Plate size: 12 mm
• Included angle: 80°
• Clearance angle: 0°
• Hole style: cylindrical hole

Special features

• CVD‑coated carbide
• Double‑sided chipbreaker
• Rhomboid plate form
• With cylindrical hole for secure clamping
• Intended application: turning
• Optimised for stainless steel under stable to mildly interrupted cutting

FAQ

Which materials is this insert suitable for?

The CNMG 120408 T6215 insert is optimised for machining stainless steel; the T6215 grade and the CVD coating are selected to handle the adhesion and work‑hardening tendencies of such materials.

How many cutting edges are available per insert?

This is a double‑sided indexable insert, providing multiple usable cutting edges before replacement is required; the design helps reduce tooling costs over time.

Is the insert compatible with standard ISO holders?

Compatibility depends on plate form, thickness, fastening and tolerance class; the ISO CNMG 120408 format is compatible with holders designed for CNMG plates when dimensions and fastening match.

Can the insert handle mildly interrupted cuts?

Yes, the grade T6215 and the robust carbide substrate are intended for stable to mildly interrupted turning of stainless steels, offering a compromise between edge toughness and wear resistance.

What benefits does the CVD coating deliver?

The CVD coating increases abrasion resistance and reduces flank wear during turning operations, which supports longer tool life and more consistent surface finish on demanding materials.

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.