DCMT 11T312 AH905 Wendeplatten - Tungaloy

Take advantage of the combination of durable PVD-coated carbide, stable 55° rhombic geometry and precise clamping features for reliable, repeatable turning operations; request application advice or order original inserts through Metav Werkzeuge for fast delivery.

DCMT11T312 AH905 – Indexable Turning Insert (ISO 11T312) for Turning, Tungaloy

DCMT11T312 AH905 is an ISO-standard indexable insert designed for general external and internal turning, offering a balance of cutting-edge sharpness and process security for industrial machining.

• PVD-coated AH905 for wear resistance
• 55° rhombic geometry for versatile turning
• 1.2 mm corner radius balances finish and strength
• Cylindrical hole with countersink for secure clamping

Consistent cutting performance through a wear‑resistant grade

The insert is manufactured in the AH905 grade, a PVD-coated carbide designed for high resistance to wear and chipping. This coating and substrate combination provides a consistent cutting edge life, which reduces interruptions and tool changes in production. For workshops prioritising process security, the material selection means fewer scrap parts and more predictable batch results. The result is an economical tool life that supports steady machining cycles.

Secure mounting and ISO-based compatibility for system safety

Compatibility with toolholders depends on geometry, free angle, tolerance class, fixing method, size and thickness; this ISO series ensures straightforward selection of a matching holder. The insert features a cylindrical hole with a one‑sided countersink (40°–60°) that enables secure clamping and repeatable seating in the pocket. With a defined free angle of 7° and standard tolerances, the insert integrates into conventional holder systems, helping to maintain concentricity and minimise vibration during turning.

Geometry optimised for balance between surface finish and edge strength

The 55° rhombic plate form and 1.2 mm corner radius deliver a compromise between a sharp cutting edge and mechanical robustness: the smaller radius helps produce finer surface finishes, while the rounded corner reduces susceptibility to chipping in interrupted cuts. The one‑sided chipbreaker design supports controlled chip formation for many turning tasks, improving evacuation and reducing the risk of built-up edge. The 3.97 mm thickness adds rigidity, supporting stable cutting in both external and internal operations.

Practical selection for efficient workshop production

As part of the ISO indexable insert system, the insert performs best when combined with the appropriate holder, shim and fastening hardware; a properly matched assembly reduces set‑up time and improves repeatability. Choosing the AH905 grade is recommended where a sharp cutting edge and dependable process security are required. The combination of geometry, coating and stable clamping contributes to lower overall tooling costs through longer intervals between changes and consistent part quality.

Contact Metav Werkzeuge today to discuss application-specific recommendations for Tungaloy indexable inserts and to obtain original parts or technical guidance via info@metav-werkzeuge.com or +49 2822 7131930

Technical Data

• Article number: 6879338
• Manufacturer SKU: TUN6879338
• SKU: 6879338-Tungaloy
• Model designation: DCMT11T312 AH905 Tungaloy‑insert

Numbers / Core technical data

• Corner radius: 1.2 mm
• Geometry angle: 55°
• Free angle: 7°
• Thickness: 3.97 mm
• Size designation: 11

Designs / Special features

• Material: carbided insert with PVD coating (AH905)
• Plate form: rhombic
• Hole style: cylindrical hole + one‑sided countersink (40°–60°)
• Chipbreaker: one‑sided
• Application: turning
• Series: ISO indexable turning inserts

FAQ

What materials is this insert suitable for?
The AH905 grade PVD‑coated carbide insert is intended for a broad range of turning tasks; the insert performs well on steels and many alloyed materials where a sharp edge and process security are required.

How does the 1.2 mm corner radius affect machining results?
A 1.2 mm corner radius improves edge strength compared with very small radii and helps prevent chipping, while still allowing a good surface finish in general turning operations with DCMT11T312 AH905.

Which holders are compatible with this ISO insert?
Compatibility depends on form, relief angle, tolerance class, fixing method, size and thickness; use holders that accept ISO 11T312 rhombic inserts and provide firm clamping to make full use of the insert’s stability.

What is the benefit of the cylindrical hole with countersink?
The cylindrical hole combined with a one‑sided countersink (40°–60°) ensures repeatable seating and secure clamping, reducing movement in the pocket and helping to maintain concentricity and tool life.

Is this an original Tungaloy product and how to order replacements?
The item is an original Tungaloy indexable turning insert (DCMT11T312 AH905). For replacements and application advice, contact Metav Werkzeuge for product availability and guidance.

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.