TCMT 16T312 T515 Wendeplatten - Tungaloy

Take advantage of the Tungaloy CVD-coated carbide grade for economical cast-iron turning combined with consistent edge stability and simple holder compatibility; order the TCMT16T312 directly via Metav Werkzeuge or consult the technical advisers for precise tool selection.

TCMT 16T312 T515 triangular indexable insert for turning by Tungaloy — CVD-coated carbide for cast iron

TCMT16T312 T515 Tungaloy-Wendeplatte is a triangular ISO insert optimised for external and internal turning of cast iron components

• Triangle insert ISO size 16
• CVD-coated carbide T515 for cast iron
• 1.2 mm corner radius for robust cutting
• Cylindrical hole with 40°–60° countersink

Reliable performance for economical cast-iron turning

The TCMT16T312 insert is specified for the economic machining of cast iron and is offered in the T515 CVD-coated carbide grade. The combination of a wear-resistant coating and a robust substrate means that longer tool life can be expected under stable cutting conditions. The coated surface improves heat resistance and reduces flank wear, so fewer index changes are needed and process cost per part is reduced. For operators less familiar with coatings, CVD (chemical vapour deposition) creates a hard, adherent layer that protects the cutting edge at elevated temperatures and preserves dimensional accuracy over repeated cuts.

Secure fitting and predictable geometry for consistent results

Compatibility with tool holders is defined by the insert’s shape, relief angle, tolerance class, fixing method, size and thickness. The triangle geometry and the central cylindrical hole with a single-sided 40°–60° countersink ensure secure clamping in standard ISO indexable holders. A 60° included angle gives a good compromise between strength and accessibility for contour work, while the 7° clearance reduces rubbing on the flank. These characteristics lead to steady chip flow and repeatable seating position, which helps maintain surface finish and dimensional repeatability across production runs.

Controlled chip formation and edge robustness

Equipped with a one-sided chipbreaker and a 1.2 mm corner radius, the insert is designed to moderate chip size and protect the cutting edge during interrupted cuts or variable section work. The chipbreaker geometry is matched to the grade and typical feed ranges for cast iron, encouraging manageable, short chips that evacuate reliably. The moderate corner radius increases edge strength and extends life when turning heavier sections or when small misalignments occur, while still allowing acceptable surface finishes in most finishing or semi-finishing operations.

System approach and practical use in the workshop

The insert is part of a complete system: an ISO indexable plate, a compatible external holder or boring bar, a locating pad or clamp set and spare screws. It is specified with a plate thickness of 3.97 mm and a nominal plate size 16, which is common in many turning systems and simplifies stocking decisions. The item is best selected as part of the overall holder–insert assembly, taking into account machine rigidity, workpiece material and desired cutting parameters. For mixed batches or variable stability, choose the chipbreaker and grade combination that matches the most demanding operation to avoid frequent tool changes.

For tailored advice on Tungaloy carbide grades and to arrange supply of TCMT16T312 inserts, contact Metav Werkzeuge at info@metav-werkzeuge.com or call +49 2822 7131930 to discuss the optimal insert and holder combination for a given turning task.

Technical data

• Article number: 6747834
• Manufacturer SKU: TUN6747834
• SKU: 6747834-Tungaloy

Facts

• Corner radius: 1.2 mm
• Included angle: 60°
• Clearance angle: 7°
• Plate thickness: 3.97 mm
• Plate size: 16
• Countersink angle range: 40°–60°

Special features

• CVD-coated carbide, grade T515
• Triangle plate (triangular)
• With hole — cylindrical hole + single-sided countersink
• One-sided chipbreaker
• Intended application: turning
• Material: carbide

FAQ

What materials is this insert suited for?
The TCMT16T312 in T515 grade is primarily intended for machining cast iron and provides controlled chip formation when turning such materials.

Can this insert be used in standard ISO triangular holders?
Yes, the triangular ISO form and central hole with countersink are designed for compatibility with standard ISO triangular indexable holders.

How does the T515 CVD coating benefit production?
The T515 CVD-coated carbide enhances heat resistance and wear protection, which contributes to longer tool life and reduced changeover frequency for cast-iron turning.

What does the 1.2 mm corner radius mean in practice?
A 1.2 mm corner radius increases edge robustness, helping to withstand heavier feeds and interrupted cuts while maintaining acceptable surface finish.

Is the chipbreaker suited to finishing or roughing cuts?
The one-sided chipbreaker is engineered to produce short, controlled chips and is adaptable to both semi-finishing and many finishing applications when paired with appropriate feeds and speeds for the material.

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.