XPMT 08T308 AH7020 Wendeplatten - Tungaloy

Take advantage of the AH7020 PVD-coated carbide and the DS chipbreaker to achieve stable, process-safe drilling with controlled chip formation and reliable edge life; order the insert via Metav Werkzeuge or ask their consultants for application-specific recommendations.

XPMT 08T308 AH7020 indexable insert for drilling — Tungaloy

The XPMT08T308R-DS AH7020 is a PVD-coated carbide indexable insert developed for productive, process-secure general drilling within the TungDrillTwisted changeable-insert system.

• PVD-coated carbide grade AH7020 for durability
• Designed for TDX changeable insert drilling systems
• 0.8 mm corner radius for stable cutting edge
• Cylindrical hole with single-side countersink
• DS chipbreaker for controlled chip formation

Consistent edge life for uninterrupted production

The AH7020 grade is a PVD-coated carbide developed to deliver wear- and break-resistant performance in drilling tasks where a sharp cutting edge and process security are required. The combination of coating and substrate enhances flank and crater wear resistance, which supports longer tool life and fewer indexings. This stability translates into more predictable production cycles and reduced interruption for tool changes, helping to lower overall machining costs.

Modular system design for flexible machine integration

Built for the TungDrillTwisted family, the insert forms part of a modular system using TDX/C‑TDX drill bodies and standard clamping screws. The family is differentiated by overhang (L/D) ratios and interface choices, enabling tailored selection of diameter, L/D, shank and insert variant according to machine capability, workpiece material and cooling arrangement. The modular approach simplifies stocking and speeds up reconfiguration for different jobs.

Controlled chip formation and secure seating improve cycle time

The DS chipbreaker and the insert’s hole geometry — a cylindrical hole with single-side countersink (40°–60°) — ensure reliable clamping and effective chip control at a variety of cutting conditions. A 0.8 mm corner radius and an 11° relief angle produce a robust cutting edge that reduces chipping risk while maintaining acceptable cutting forces. Improved chip evacuation reduces recut and tool wear, supporting higher feed rates and steadier surface quality.

Practical guidance for selection and process stability

For general drilling applications, select the insert size, overhang and body interface that match the machine’s rigidity and the intended L/D ratio. The indexable plate thickness of 3.97 mm and the special plate shape suit stable seating in the TDX bodies; clamping hardware and the assembly key complete the system for safe operation. For additional technical data or confirmation of fitment and coolant strategy, Metav Werkzeuge can provide detailed advice and component matching.

Contact Metav Werkzeuge for tailored recommendations on the Tungaloy XPMT08T308R-DS AH7020 inserts and TungDrillTwisted components — technical consultants are available to advise on L/D selection, shank compatibility and coolant optimisation.

Technical data

• Article number: 6970305
• Manufacturer SKU: TUN6970305
• Metav SKU: 6970305-Tungaloy
• Manufacturer article number: 6970305

Facts

• Corner radius: 0.8 mm
• Plate thickness: 3.97 mm
• Plate size: 08
• Relief angle: 11°
• Hole countersink range: 40°–60°

Special features

• Material: carbide
• Grade/coating: AH7020 (PVD)
• Chipbreaker: DS
• Plate form: special
• Hole: cylindrical hole with single-side countersink
• System: TungDrillTwisted with TDX/C‑TDX bodies, XPMT inserts, clamping screws and key
• Application: drilling

FAQ

What materials is this insert intended for?
The AH7020 grade on the XPMT08T308R-DS insert is formulated for general drilling tasks where a sharp cutting edge and process security are required; specific material recommendations depend on workpiece properties and cutting parameters.

How does the DS chipbreaker affect cutting performance?
The DS chipbreaker on the insert promotes controlled chip segmentation and evacuation, which reduces recutting, helps maintain stable cutting forces and supports higher productive feeds when combined with correct coolant and speed settings.

Which system components are required to use this insert?
The insert operates within the TungDrillTwisted family and requires compatible TDX or C‑TDX drill bodies, the matching XPMT inserts, clamping screws and the assembly key for secure mounting.

Is the 0.8 mm corner radius suitable for finishing operations?
The 0.8 mm radius provides a balance between edge strength and surface finish; for fine finishing, different geometries or smaller radii may be preferable depending on the surface quality required.

What does the AH7020 designation mean for wear resistance?
AH7020 is a PVD-coated carbide grade optimised for wear and edge stability during drilling; it enhances resistance to flank and crater wear and is intended for process-secure cutting where breakage risk must be minimised.

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.