CNMG 120412 T9215 Wendeplatten - Tungaloy

Take advantage of the combination of CVD-coated carbide T9215, robust CNMG geometry and a double-sided chipbreaker for steady productivity in steel turning; order directly via Metav Werkzeuge or request advice from our consultants.

CNMG 120412 T9215 Turning Insert by Tungaloy — ISO rhombic insert for turning

CNMG120412 T9215 is an ISO-standard, rhombic turning insert designed for general external and internal turning in steel applications.

• CVD-coated carbide grade T9215
• CNMG 120412 rhombic insert, 80° geometry
• 1.2 mm corner radius for versatile turning
• Double-sided chipbreaker, cylindrical hole

High mid-steel productivity with a dependable coating

The insert combines a CVD-coated carbide grade with a geometry optimised for continuous to mildly interrupted cuts, delivering consistent performance in medium steel machining. The T9215 grade balances wear resistance and fracture toughness, enabling longer tool life under stable cutting conditions. This results in fewer indexings and reduced process interruptions, which supports a more efficient production flow and predictable cycle times.

Compatibility guidance for correct mounting and secure clamping

Compatibility with toolholders depends on the insert’s form, clearance angle, tolerance class, fixing style, size and thickness. The rhombic 80° geometry and the cylindrical locating hole ensure reliable alignment in compatible ISO external holders or boring bars. The 0° clearance angle and the 4.76 mm thickness provide a stable seating; using a matching clamping set and replacement screws reduces setup time and improves repeatability during tool changes.

Geometry and chip control that simplify process planning

A 1.2 mm corner radius offers a practical compromise between edge strength and surface finish capability, suitable for a range of turning operations. The double-sided chipbreaker aids chip formation across varying feed rates, so the insert can produce manageable chips and better surface quality without complex parameter tuning. For less experienced planners, the term “chipbreaker” refers to the small grooves or profiles on the rake face that shape and break chips during cutting.

Practical benefits for workshop reliability and decision-making

Choosing this insert supports higher productivity through improved wear resistance and reliable edge behaviour, especially when machining medium-strength steels. The ISO-standard format simplifies stock management, as the same insert geometry fits a wide range of holders. The carbide substrate provides the necessary hardness for sustained cutting, while the coating extends life under typical operating conditions — a rational, cost-aware choice for industrial turning.

For tailored recommendations on using the T9215 grade or to place an order through Metav Werkzeuge, contact our team at Metav Werkzeuge: info@metav-werkzeuge.com | +49 2822 7131930 — expert support available for tool selection and application optimisation.

Technical data

• Article number: 6772170
• SKU: 6772170-Tungaloy
• Manufacturer SKU: TUN6772170
• Model series: ISO turning indexable inserts

Key dimensions

• Insert designation/ISO: CNMG120412
• Inscribed circle/size: 12 mm
• Thickness: 4.76 mm
• Clearance angle: 0°
• Shape angle: 80°
• Corner radius: 1.2 mm

Special features

• Cutting material: carbide (cemented carbide)
• Coating/type: CVD-coated carbide, grade T9215
• Chipbreaker: double-sided
• Plate form: rhombic
• Hole style: cylindrical locating hole
• Typical application: external and internal turning in steel

FAQ

What materials is this insert intended for?
The CNMG120412 T9215 insert is optimised for medium steel machining; the T9215 CVD-coated carbide combines wear resistance and toughness for productive turning operations.

How many usable cutting edges does the insert provide?
With its double-sided design, the insert offers multiple usable edges; the precise number depends on indexing practice and whether all sides are employed according to holder compatibility.

What does the T9215 designation indicate?
T9215 denotes a CVD-coated carbide grade developed for a balance of wear resistance and fracture toughness, suitable for continuous to slightly interrupted cuts in steel.

How to ensure the insert fits the toolholder correctly?
Verify holder compatibility by matching the ISO form, size (12 mm), thickness (4.76 mm), clearance angle (0°) and the locating method for the cylindrical hole; correct clamping and tolerance class ensure secure seating.

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.