DCMT 070208 GH730 Wendeplatten - Tungaloy

Take advantage of the combination of ISO compatibility, a wear‑resistant GH730 grade and a balanced 0.8 mm nose radius for reliable turning performance; order the insert directly via Metav Werkzeuge or consult the specialists for application advice.

DCMT070208 GH730 Tungaloy turning insert — rhombic ISO insert, 55° geometry and 0.8 mm nose radius

The DCMT070208 GH730 is an ISO‑standard rhombic turning insert developed for external and internal turning, combining a cemented carbide substrate with a wear‑resistant Tungaloy grade to deliver stable cutting edges and reliable chip control.

• ISO rhombic insert for turning
• GH730 grade for wear and edge stability
• 7° clearance, 55° approach angle
• 0.8 mm nose radius, single‑sided chipbreaker

Consistent tool life through GH730 grade and robust carbide construction

The GH730 grade is formulated to balance wear resistance, toughness and edge stability, so the insert sustains cutting forces while maintaining a predictable flank and rake performance. In practical terms, this means fewer unscheduled tool changes and more consistent component quality during serial or batch turning. The cemented carbide substrate provides the basic hardness and thermal resistance needed for common turning tasks, while the GH730 chemistry supports longer life under mixed cutting conditions. For machinists and production planners, this combination reduces variability and contributes to a stable process window.

Precise fit and geometry for reliable set‑up and repeatability

The insert conforms to ISO dimensions, and compatibility with the toolholder is determined by form, clearance angle, tolerance class, clamping method, size and thickness. The rhombic form with a 55° approach angle offers a favourable balance between cutting force direction and surface finish, while the 7° clearance minimises rubbing at the flank. The insert is supplied with a central hole and a cylindrical hole plus a one‑sided countersink (40°–60°) to ensure secure seating and reproducible positioning in standard screw/clamp systems. Correct seating reduces vibration and improves repeatability, which benefits precision shops and high‑throughput cells alike.

Practical machining advantages and handling recommendations

A single‑sided chipbreaker guides chip formation for many turning operations, helping to avoid long, stringy chips in stable set‑ups and to produce shorter chips for easier evacuation. The 0.8 mm nose radius is a pragmatic compromise between edge strength and surface finish: it supports modest radii turning while still permitting economical material removal. When integrating this insert into a machining process, select the chipbreaker and grade according to the workpiece material and rigidity of the set‑up; the system is built around an ISO insert, a matching external holder or boring bar, an underlay/clamping set and replacement screws. For additional fitting guidance or cutting data tailored to specific alloys, Metav Werkzeuge can supply parameters and recommendations to accelerate process validation.

Contact Metav Werkzeuge for tailored cutting data, holder matching and fast supply of the Tungaloy GH730 inserts; phone +49 2822 7131930 or e-mail info@metav-werkzeuge.com

Technical data

• Article number: 6820983
• Manufacturer SKU: TUN6820983
• SKU: 6820983-Tungaloy
• Model series: ISO‑Drehwendeschneidplatten

Facts

• Size designation: 07
• ISO code: 070208
• Thickness: 2.38 mm
• Nose radius: 0.8 mm
• Clearance angle: 7°
• Approach/lead angle: 55°

Special features

• Material: cemented carbide
• Grade: GH730 (Tungaloy)
• Plate form: rhombic
• Chipbreaker: single‑sided
• Hole: with hole
• Hole style: cylindrical hole + one‑sided countersink (40°–60°)
• Application: turning

FAQ

What materials can be machined with this insert?
The GH730 grade and cemented carbide substrate of the DCMT070208 insert are intended for general turning applications; the grade provides a broad balance of wear resistance and toughness suitable for many steels and mixed applications — select the chipbreaker and cutting data to match the specific workpiece material.

How does the 0.8 mm nose radius affect surface finish and strength?
A 0.8 mm nose radius gives improved edge strength compared with smaller radii while still enabling a good surface finish in turning; this radius is a compromise between durability and the ability to produce finer surface profiles.

What does the hole style mean for clamping?
The insert is supplied with a cylindrical centre hole plus a one‑sided countersink (40°–60°), allowing standard screw or clamp systems to achieve secure and reproducible seating in the toolholder, which helps reduce vibration and improve repeatability.

Is the insert interchangeable with other ISO DCMT holders?
Compatibility follows ISO rules for form, size, thickness and tolerance class; the DCMT070208 insert is designed to fit holders made for DCMT‑type inserts provided the holder matches the ISO size, clearance and clamping specifications.

What is the advantage of the single‑sided chipbreaker?
The single‑sided chipbreaker supports controlled chip formation in many turning operations, promoting shorter chips for easier evacuation and improved process stability under suitable cutting conditions.

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.