CFGT R2020- AH918 Wendeplatten - Tungaloy

Benefit from the combination of a PVD‑coated carbide AH918 grade for wear and fracture resistance, ISO compatibility for straightforward tool selection, and a secure clamping concept—order directly via Metav Werkzeuge or request guidance from their consultants for application‑specific advice.

CFGT R2020- AH918 ISO rhombic turning insert, PVD‑coated carbide (Tungaloy)

The CFGT R2020- AH918 is an ISO rhombic indexable turning insert designed for external and internal turning, featuring a 25° relief angle and a single‑sided chipbreaker for controlled chip formation.

• PVD‑coated carbide AH918 for wear resistance
• ISO‑standard rhombic insert R2
• 25° relief angle for versatile engagement
• Cylindrical hole with single‑side countersink
• Suitable for external and internal turning

Consistent edge life for reliable production

The PVD‑coated carbide grade AH918 delivers a balance of wear resistance and fracture toughness, which supports longer tool life under cyclic loads and interrupted cuts. This grade is formulated to retain a sharp cutting edge while resisting chipping, so process stability is improved and rework rates are reduced. For production planning, that means fewer unexpected tool changes and more predictable part quality, particularly where a sharp edge and high process security are both required.

Easy integration into ISO tooling systems for fast setup

As an ISO‑standard indexable turning insert, compatibility with a chosen holder is governed by insert form, relief angle, tolerance class, fastening, size and thickness. The rhombic R2 geometry with an 80° included angle and a 25° relief angle offers flexible engagement for a variety of turning geometries. The insert’s cylindrical hole with a one‑side countersink (40°–60°) enables positive, repeatable clamping when used with the correct shim and fastening screw. This reduces set‑up time and ensures repeatable positioning when replacing or indexing inserts.

Versatile turning performance for external and internal operations

Designed for both external and internal turning, the single‑sided chipbreaker supports controlled chip formation in many turning scenarios; selecting the appropriate chipbreaker and grade according to workpiece characteristics and machining stability yields the best results. The insert forms part of a small tooling system—indexable insert, matching external holder or boring bar, shim/clamping set and replacement screws—which together determine achievable surface finish and cycle time. For less experienced operators, the clear system approach simplifies tool choice and contributes to safer, more productive machining.

For production‑critical turning choose the Tungaloy AH918 PVD‑coated insert via Metav Werkzeuge or contact Metav Werkzeuge for personalised selection support at info@metav-werkzeuge.com or by phone +49 2822 7131930.

Technical Data

• Article number: 6801681
• Manufacturer SKU: TUN6801681
• SKU: 6801681‑Tungaloy
• Model series: ISO indexable turning inserts
• Material: carbide
• Grade/coating: AH918 (PVD‑coated)

Core dimensions & angles

• Included angle: 80°
• Relief angle: 25°
• Insert size: R2
• Hole style: cylindrical hole + one‑side countersink (40°–60°)
• Chipbreaker: single‑sided

Features & compatibility

• PVD‑coated carbide AH918, wear‑ and fracture‑resistant
• ISO rhombic insert for external and internal turning
• Secure clamping via cylindrical hole and countersink
• System components: insert, external holder/boring bar, shim/clamping set, replacement screws
• Compatibility determined by form, relief angle, tolerance class, fastening, size and thickness

FAQ

What materials is this indexable insert suited for?
The CFGTR2020‑ AH918 insert from Tungaloy is a PVD‑coated carbide grade designed for turning where a sharp cutting edge and process security are required; the final choice of chipbreaker and grade should match the specific workpiece material and machining conditions.

How can compatibility with a toolholder be checked?
Compatibility depends on insert form, relief angle, tolerance class, fastening, size and thickness; verify these parameters against the holder or boring bar specification before assembly.

What does the 25° relief angle affect in practice?
A 25° relief angle reduces radial engagement and can improve edge strength during heavier cuts, while still allowing good approach angles for general turning tasks.

How is the insert clamped and indexed?
Clamping uses the cylindrical hole with a one‑side countersink and the matching screw and shim/clamping set, offering repeatable positioning for indexing and replacement.

Is this insert suitable for internal turning operations?
Yes, the insert is specified for both external and internal turning; use an appropriate boring bar and ensure sufficient rigidity for the intended cutting parameters.

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.