DCMT 11T312 AH905 Wendeplatten - Tungaloy

The combination of a PVD-coated AH905 grade and a 1.2 mm corner radius ensures a sharp, wear‑resistant cutting edge and consistent chip control for turning operations; order the insert directly via Metav Werkzeuge or contact the consultants for application advice.

DCMT11T312 AH905 Tungaloy turning insert — PVD-coated carbide, 1.2 mm radius

The DCMT11T312 AH905 is an ISO-standard rhombic turning insert designed for reliable external and internal turning where a sharp cutting edge and process security are required.

• PVD-coated carbide AH905
• Rhombic 55° geometry
• 1.2 mm corner radius
• Cylindrical hole with countersink
• Single-sided chipbreaker

Consistent edge security through coating and grade

The combination of the AH905 grade and a PVD coating provides a balanced resistance to wear and edge chipping while maintaining a sharp initial cutting edge. This makes the insert especially suitable where stable cutting performance is essential over longer tool life. The coating reduces friction at the cutting zone and improves heat resistance, which in turn supports more predictable tool behaviour and fewer unplanned interruptions in production. Emphasis on consistent chip formation contributes directly to process reliability and reproducible surface quality.

Geometry tailored for versatile turning with reduced rework

With a 55° rhombic geometry and a 1.2 mm corner radius, the insert enables a stable engagement in both external and internal turning tasks while preserving a favourable cutting edge strength. The 7° clearance angle and plate thickness 3.97 mm provide structural support that helps resist vibration and edge deformation under moderate cutting loads. These geometric features translate into tangible benefits: improved dimensional stability of finished parts and a lower likelihood of rework due to edge failure or poor surface finish.

Fit, mounting and system considerations for secure use

As an ISO-standard turning insert, compatibility with the toolholder depends on form, clearance angle, tolerance class, fastening, size and thickness. The insert is supplied with a cylindrical hole plus a one-sided countersink (40°–60°) for secure clamping; appropriate selection of the corresponding outside holder or boring bar is essential for achieving the full potential of the cutting geometry. A complete system typically includes the indexable insert, a matched external holder or boring bar, a backing/locating element and replacement screws to ensure consistent and repeatable mounting.

Practical advantages in production environments

By combining a robust substrate with an engineered chipbreaker and a modern coating, this insert delivers a favourable balance of productivity and component quality. The single-sided chipbreaker facilitates controlled chip flow in many turning scenarios, helping to reduce manual chip handling and improve cycle stability. Where a sharp cutting edge and process security are priorities, the insert supports prolonged intervals between tool changes, helping to maintain uptime and throughput in serial production or small-batch machining alike.

For specification matching, batch availability and technical advice on the Tungaloy DCMT11T312 AH905 turning insert, contact Metav Werkzeuge at info@metav-werkzeuge.com or call +49 2822 7131930 for swift assistance and supply coordination

Technical data

• Article number: 6879343
• Manufacturer SKU: TUN6879343
• Model series: ISO turning inserts
• Manufacturer: Tungaloy

Data

• Included angle: 55°
• Corner radius: 1.2 mm
• Clearance angle: 7°
• Plate thickness: 3.97 mm
• Plate size: 11

Special features

• PVD-coated carbide AH905
• Rhombic plate form
• Cylindrical hole + one-sided countersink (40°–60°)
• Single-sided chipbreaker
• Application: Turning (external and internal)

FAQ

Which operations are suitable for this insert?
The DCMT11T312 AH905 insert is designed for external and internal turning operations where a sharp edge and process security are required.

How does the AH905 grade benefit productivity?
The AH905 grade combines wear resistance and chipping robustness, helping to extend tool life and maintain consistent cutting performance in turning tasks.

What holder features are required for correct mounting?
Correct mounting depends on matching form, clearance angle, tolerance class, fastening method, size and thickness; the insert’s cylindrical hole with countersink is intended for secure clamping in compatible holders.

Can this insert be used for finishing passes?
Yes — the combination of a sharp cutting edge and controlled chip formation makes the insert suitable for finishing when the chosen radius and cutting parameters align with the desired surface quality.

What is the corner radius and how does it affect the cut?
The corner radius is 1.2 mm, offering a compromise between edge strength and fine surface finish; a larger radius increases edge robustness, while a smaller radius tends to improve surface finish.

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.