DCMT 070204 AH120 Wendeplatten - Tungaloy

Take advantage of the combination of PVD-coated carbide durability, precise 55° rhombic geometry and a controlled single-sided chipbreaker to keep turning operations consistent and productive; order directly via Metav Werkzeuge or contact our consultants for application advice.

DCMT 070204 AH120 Tungaloy — ISO indexable turning insert for turning, PVD-coated carbide

DCMT070204 AH120 Tungaloy is an ISO-form indexable insert engineered for external and internal turning where a sharp cutting edge and process security are essential.

• PVD-coated carbide for wear resistance
• ISO 55° rhombic insert for versatile turning
• Single-sided chipbreaker for controlled chips
• Centrally bored with 40°–60° countersink

Proven grade and coating for reliable tool life

The AH120 grade, applied as a PVD coating on a carbide substrate, is designed to combine wear resistance with resistance to edge chipping. This results in longer tool life and more predictable performance in serial turning operations. By using a PVD layer, the cutting edge remains sharp for longer under fluctuating cutting conditions, which reduces downtime for insert changes and supports higher process uptime. For production environments seeking stability and repeatable results, this specification provides a measurable benefit in tool-change intervals and surface quality.

Geometry and dimensions that simplify machine integration

The 55° rhombic geometry and a 7° clearance angle make the insert well suited to common external and internal turning set-ups; the smaller lead angle balances cutting force distribution and allows access in tighter workpiece contours. A 0.4 mm nose radius offers a practical compromise between finishing and moderate stock removal, while the 2.38 mm plate thickness supports secure clamping and rigidity. The centrally bored design with a cylindrical hole and one-sided countersink (40°–60°) ensures compatibility with many ISO-standard holders; compatibility is determined by form, clearance angle, tolerance class, attachment, size and thickness, so selecting the correct holder and clamp set guarantees repeatable seating and safe operation.

Operational benefits and typical applications

Equipped with a single-sided chipbreaker, the insert promotes controlled chip formation and evacuation, which reduces the risk of built-up edge and improves surface finish on repetitive runs. Typical uses include general turning tasks — both roughing and finishing when the correct chipbreaker and grade are chosen for the material and stability of the set-up. The insert’s construction supports steady cutting forces and predictable wear, which helps maintain part tolerances and reduces scrap. For manufacturing lines that prioritise process security and consistent part quality, this insert offers a practical balance of performance and longevity.

Speak to Metav Werkzeuge for tailored selection and application support for Tungaloy AH120 indexable inserts — call +49 2822 7131930 or email info@metav-werkzeuge.com to discuss holder compatibility and the right chipbreaker for specific materials

Technical data

• Article number: 6852450
• SKU: 6852450-Tungaloy
• Manufacturer SKU: TUN6852450
• Model series: ISO-Drehwendeschneidplatten
• Designation: DCMT070204

Facts

• Nose radius: 0.4 mm
• Plate thickness: 2.38 mm
• Insert size: 07
• Relief angle: 7°
• Insert angle: 55°

Special features

• Material: carbide
• Coating / grade: AH120, PVD-coated
• Plate form: rhombic
• Hole: cylindrical hole + one-sided countersink (40°–60°)
• Chipbreaker: single-sided
• Application: turning (external and internal)
• ISO-standard indexable insert

FAQ

What materials is this insert intended for?
The AH120 grade and PVD coating of the DCMT070204 insert provide a wear- and fracture-resistant cutting edge suitable for a wide range of turning tasks; the exact material suitability depends on selecting the appropriate chipbreaker and machining parameters for the workpiece material.

How does the 55° rhombic geometry affect cutting performance?
A 55° rhombic geometry offers a balance between strength and accessibility, allowing versatile external and internal turning with reduced cutting forces compared with sharper lead angles.

What does the centrally bored design with countersink mean for clamping?
The cylindrical bore with a one-sided countersink (40°–60°) ensures firm, repeatable seating in compatible ISO holders and simplifies replacement with standard screws and clamp sets.

Which aspect of the insert most reduces downtime?
The combination of PVD-coated carbide and the AH120 grade extends edge life and reduces the frequency of insert changes, contributing directly to reduced machine downtime.

Can this insert be used for finishing operations?
Yes — with the appropriate nose radius and stable set-up, the insert can deliver good surface finishes; the 0.4 mm radius is suitable for many finishing and semi-finishing tasks.

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.