CNMG 120408 T9215 Wendeplatten - Tungaloy

Take advantage of the combination of high wear resistance, robust fracture safety, and consistent chip control to maintain steady production with fewer tool changes. Order the insert directly via Metav Werkzeuge or consult our technical advisors for grade and holder recommendations.

CNMG120408 T9215 Tungaloy indexable insert — CVD-coated cemented carbide, rhombic 80° for turning

CNMG120408 T9215 is a rhombic ISO turning insert designed for external and internal turning in medium steel, offering a robust graded coating for productive, continuous machining.

• CVD-coated cemented carbide for wear resistance
• Optimised for medium steel machining
• Double-sided chipbreaker for stable chips
• Rhombic 80° form with 0° relief angle

High productivity through a wear-resistant coated grade

The T9215 grade is a CVD-coated cemented carbide formulation developed for mid-range steel applications. Its coating increases abrasion resistance while the substrate retains fracture toughness, which means longer intervals between indexings and fewer unexpected tool failures. As an ISO rhombic insert, the component offers repeatable geometry that supports consistent cutting parameters across production batches. For operations seeking to reduce tool-related downtime, this grade balances tool life and process reliability without requiring complex parameter changes.

Stable chip formation and reliable cutting under varied conditions

Equipped with a double-sided chipbreaker, this insert promotes controlled chip segmentation during continuous and slightly interrupted cuts, reducing the risk of chip entanglement and improving surface finish. The combination of wear resistance and fracture safety enables higher average cutting speeds or feed rates compared with uncoated grades, improving overall productivity. Where light interruptions occur—such as at part features or interrupted passes—the robust substrate helps avoid edge chipping, maintaining dimensional stability and lowering scrap rates.

Practical system integration and geometry advantages

Compatibility with a holder is defined by form, clearance angle, tolerance class, clamping method, size and thickness; the ISO system ensures predictable seating and clamping force. Key dimensions: insert size 12 mm, thickness 4.76 mm, corner radius 0.8 mm, approach angle 80°, and relief angle 0°; the insert is supplied with a cylindrical hole for positive clamping. Use of a matched external holder or boring bar, plus a correct shim and clamp set, secures stable cutting conditions. Selecting the right chipbreaker and matching the grade to workpiece stability will yield the best balance between surface quality and tool life.

For reliable medium-steel turning with proven process stability, order the CNMG120408 T9215 from Metav Werkzeuge or contact our specialists at Metav Werkzeuge for customised holder and grade advice — eMail: info@metav-werkzeuge.com | Tel: +49 2822 7131930

Technical data

• Article number: 6773940
• Manufacturer SKU: TUN6773940
• SKU: 6773940-Tungaloy
• Brand: Tungaloy

Core specifications

• Insert designation: CNMG120408
• Insert size: 12 mm
• Thickness: 4.76 mm
• Corner radius: 0.8 mm
• Relief angle: 0°
• Approach angle: 80°
• Hole: with cylindrical hole

Special features

• Material: cemented carbide
• Coating / Grade: T9215 (CVD-coated)
• Chipbreaker: double-sided
• Shape: rhombic ISO insert
• Application: Turning; medium steel machining
• System recommendation: ISO insert with matching holder or boring bar, shim/clamp set and spare screws

FAQ

Is this insert suitable for external and internal turning operations?
Yes. The CNMG120408 T9215 indexable insert is designed for both external and internal turning and delivers consistent performance in medium steel applications.

What advantages does the T9215 coating provide?
The T9215 CVD-coated grade on the CNMG120408 insert improves wear resistance while maintaining fracture toughness, which supports higher productivity and longer tool life under continuous to slightly interrupted cuts.

Which dimensions should be checked for holder compatibility?
Check form, relief angle (0°), approach angle (80°), insert size (12 mm), thickness (4.76 mm) and the cylindrical hole when selecting a compatible holder for secure clamping.

Can this insert handle interrupted cuts?
Yes. The cemented carbide substrate combined with the T9215 coating offers good fracture resistance, making it suitable for light to moderate interruptions during 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.