TPMT 16T312 T5115 Wendeplatten - Tungaloy

Take advantage of the ISO‑standard compatibility, CVD‑coated cemented carbide grade T5115, and a robust 1.2 mm corner radius to ensure stable, productive turning of cast iron components; order directly via Metav Werkzeuge or consult the team for application advice.

TPMT 16T312 T5115 triangular turning insert for turning (Tungaloy)

TPMT16T312-CM T5115 is an ISO‑standard triangular turning insert designed for external and internal turning operations, optimised for cast iron machining with a balanced combination of wear resistance and edge stability.

ISO-standard triangular insert CVD-coated carbide grade T5115 Designed for cast iron turning 1.2 mm corner radius, cylindrical hole

Consistent performance for cast iron turning

The insert combines a CVD‑coated surface with cemented carbide substrate to deliver a reliable balance between wear resistance and edge toughness. The chosen grade, T5115, is a universal choice when machining cast iron, offering consistent life and predictable cutting behaviour. The coating reduces adhesion and thermal wear during continuous cuts, while the base material maintains edge integrity under interrupted cuts. This results in fewer insert changes and steadier component tolerances.

Secure clamping and ISO compatibility for predictable results

Compatibility with toolholders is governed by ISO form, free angle, tolerance class, fastening method, size and thickness; the ISO designation ensures the insert fits standard triangular pocket holders. The insert is intended to be used with a matched outer holder or boring bar, together with a support shim or clamping set and replacement screw as required in the tool system. Defined standards reduce setup time and minimise variability between tool changes, supporting consistent production cycles.

Geometry engineered for strength and chip control

A 1.2 mm corner radius increases edge robustness and helps absorb cutting shocks, which is especially beneficial when the workpiece setup is less rigid. The insert’s triangular shape with a 60° included angle provides three cutting edges per index, improving economy. The cylindrical hole with a single‑side countersink (40°–60°) secures the insert reliably in the pocket and aids repeatable seating. The 11° free angle contributes to controlled chip flow and defined contact conditions at the cutting edge.

Practical guidance and application choices

Use the chipbreaker style CM and the T5115 grade for general‑purpose cast iron turning; select a finer chipbreaker or alternate grade only when machining requirements or material variants demand it. The insert is suitable for both external and internal turning; for best results, match cutter overhang and feed with the insert geometry and select holder rigidity accordingly. The system approach — insert, holder, shim/clamp and fastener — ensures safe assembly and repeatable performance even in demanding batch production.

For reliable cast iron machining, specify Tungaloy’s CVD‑coated TPMT insert and contact Metav Werkzeuge for direct ordering and tailored application support at info@metav-werkzeuge.com or by phone on +49 2822 7131930

Technical data

• Article number: 6864719
• Manufacturer SKU: TUN6864719
• SKU: 6864719-Tungaloy
• Model series: ISO turning inserts
• Name: TPMT16T312-CM T5115
• Application: Turning

Facts

• Insert size: 16 mm
• Thickness: 3.97 mm
• Corner radius: 1.2 mm
• Included angle: 60°
• Free angle (rake): 11°
• Hole style: cylindrical hole + single-side countersink (40°–60°)

Special features

• Material: cemented carbide
• Coating: CVD
• Grade: T5115
• Chipbreaker: CM
• Shape: triangular
• With hole: yes
• ISO-standardised insert
• System components: outer holder / boring bar, support shim/clamp set, replacement screws

FAQ

What materials is this insert suitable for?
The TPMT16T312-CM T5115 insert (Tungaloy, turning insert, SKU 6864719-Tungaloy) is optimised for cast iron machining, with the T5115 grade offering a balanced combination of wear resistance and edge stability.

Can this insert be used for both external and internal turning?
Yes, the insert is designed for both external and internal turning operations; compatibility with the holder and operational rigidity determine the best application.

How is holder compatibility ensured?
Compatibility depends on ISO form, free angle, tolerance class, fastening, size and thickness; using an ISO‑compliant holder and the correct shim/clamp set ensures secure mounting and repeatable positioning.

What benefits does the CVD coating provide?
The CVD coating reduces thermal and adhesive wear, improving tool life and surface finish when machining cast iron under steady cutting conditions.

Why choose the 1.2 mm corner radius?
A 1.2 mm corner radius increases edge strength and shock resistance, making the insert more tolerant of less rigid setups and intermittent cuts.

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.