DCMT 070208 NS9530 Wendeplatten - Tungaloy

Benefit from the NS9530 uncoated cermet grade and the precise DCMT070208 geometry — a 55° rhombic insert with a 0.8 mm corner radius — to achieve superior surface finish and low cutting forces in finishing turns; order directly via Metav Werkzeuge or consult our advisors for selection support.

DCMT070208 NS9530 – Tungaloy indexable insert for turning (55° rhombic, R0.8)

The DCMT070208 NS9530 is an ISO-standard rhombic indexable insert designed for finishing operations in steel, providing a sharp cutting edge and reduced cutting forces for continuous cuts and small depth-of-cut applications.

• ISO rhombic insert DCMT070208
• NS9530 uncoated cermet for finishing
• 55° cutting angle; 0.8 mm corner radius
• Cylindrical hole with single-sided countersink

Superior surface quality through a dedicated finishing grade

The NS9530 uncoated cermet grade combines ceramic hardness with a metallic binder to maintain a sharp cutting edge during light finishing cuts. This composition reduces built-up edge and lowers cutting forces, which in turn supports a consistently high surface finish on steels. For operations that prioritise fine tolerance and low roughness, this grade is tailored to continuous cutting conditions and small feed rates, where edge integrity and minimal vibration directly improve productivity and part quality.

Geometry engineered for stable clamping and predictable cutting

The rhombic 55° geometry with a 7° clearance angle provides a balance between cutting accessibility and edge support. The 0.8 mm corner radius offers improved edge strength while still enabling fine surface generation; a larger radius would increase strength but risk deteriorating finish, whereas a smaller radius favours sharper profiles. The insert is supplied with a cylindrical hole and a single-sided countersink (40°–60°) to ensure secure clamping in compatible toolholders. Compatibility depends on holder form, relief angle, tolerance class, fastening method, size and thickness, so selection of the matching external holder or boring bar is essential for repeatable performance.

Improved process efficiency and reliable chip control

The single-sided chipbreaker geometry and the inherent wear characteristics of the cermet substrate reduce cutting forces and stabilise chip formation during finishing passes. Reduced forces lower spindle load and vibration, which prolongs tool life and helps maintain surface integrity over longer series runs. The carbide-based substrate underneath the cermet layer ensures mechanical strength at the cutting edge; together these design choices deliver efficiency gains in cycle time and consistent dimensional results when light cuts and high precision are required.

Application guidance and selection advice for turning in steel

Designed primarily for external and internal turning of steel, the insert performs best in finishing roles where continuous cutting and small depths of cut are expected. Choose the NS9530 grade and the single-sided chipbreaker when the priority is superior surface quality and low cutting forces. For interrupted cuts, higher toughness grades or different chipbreakers may be preferable. For straightforward holder pairing and to ensure secure mounting, verify the insert’s ISO designation and dimensions before ordering; the ISO-standard format simplifies replacement and inventory management while supporting flexible toolset-up across conventional turning operations.

For finishing-oriented turning tasks, consider the Tungaloy NS9530 DCMT070208 insert — contact Metav Werkzeuge for tailored recommendations, availability and quick delivery at info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: 6998466

• Manufacturer SKU: TUN6998466

• Model series: ISO turning indexable inserts

• Material: Carbide substrate (cermet grade NS9530)

• ISO designation: DCMT070208

Core specifications

• Cutting angle: 55°

• Clearance angle: 7°

• Corner radius: 0.8 mm

• Thickness: 2.38 mm

• Size: 07

Special features

• Uncoated NS9530 cermet finishing grade
• Rhombic shape (DCMT)
• Single-sided chipbreaker
• Cylindrical hole with single-sided countersink (40°–60°)
• Supplied for use in compatible external holders or boring bars
• Intended for finishing steel with continuous cuts

FAQ

What materials is this insert suitable for?
The DCMT070208 NS9530 insert is specifically formulated for finishing operations in steel, where its NS9530 uncoated cermet grade provides a sharp edge and low cutting forces for superior surface finish.

How does the corner radius affect performance?
A 0.8 mm corner radius offers a balance between edge strength and finish quality; the radius helps distribute cutting stresses while still permitting the fine surface textures expected in finishing applications using this Tungaloy insert.

Which holders are compatible with this ISO insert?
Compatibility is determined by holder form, relief angle, tolerance class, fastening method, size and thickness; the DCMT070208 follows ISO standards, so matching an ISO-compatible external holder or boring bar with the correct clamp and screw will ensure secure mounting.

Is the insert coated?
No; the NS9530 grade is an uncoated cermet, chosen for its sharp cutting edge and low tendency to form built-up edge during finishing of steels.

What is the purpose of the single-sided chipbreaker and countersunk hole?
The single-sided chipbreaker optimises chip formation for finishing cuts, while the cylindrical hole with a single-sided countersink (40°–60°) ensures consistent clamping and repeatable positioning in suitable toolholders.

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.