CNMG 120412 AH905 Wendeplatten - Tungaloy

Take advantage of a wear-resistant PVD-coated carbide grade and ISO compatibility for predictable turning results; the double-sided, rhombic geometry with a 1.2 mm corner radius delivers a dependable balance of edge life and cutting stability. Order directly via Metav Werkzeuge or consult the technical team for application matching.

CNMG120412 AH905 Tungaloy turning insert — PVD-coated carbide, ISO 120412

The CNMG120412 AH905 Tungaloy indexable insert is an ISO-standard turning insert designed for external and internal turning applications, offering a wear- and chipping-resistant grade for process-secure machining.

• CNMG120412 ISO format, 80° rhombic geometry
• AH905 PVD-coated carbide for wear resistance
• Double-sided insert with cylindrical hole
• 1.2 mm corner radius for stable cutting

High-efficiency turning through optimised grade and geometry

The combination of a PVD-coated carbide substrate and the AH905 grade focuses on delivering consistent cutting performance under mixed cutting conditions. The coating increases resistance to abrasive wear while the carbide substrate preserves a sharp cutting edge, resulting in predictable tool life and reduced downtime. The rhombic 80° geometry contributes to versatility in external and internal turning, enabling economical roughing and finish passes. This section explains how the coating and geometry translate into measurable productivity gains rather than abstract benefits.

Simple integration into ISO tool systems for reliable setups

Designed to the ISO designation 120412, the insert fits standard holders when form, free angle, tolerance class, fastening, size and thickness match. The cylindrical locating hole and the 4.76 mm plate thickness ensure repeatable clamping and stable seating in the pocket. The nominal 0° clearance angle and the 12 mm inscribed circle assist in predictable engagement with the workpiece, lowering the need for frequent fixture adjustments. Clear specification of these parameters supports efficient setup and reproducible machining cycles.

Practical selection and application guidance for turning tasks

When choosing grade and chipbreaker, match the double-sided chipformer and the AH905 sort to the workpiece material and machine stability. The 1.2 mm corner radius is suitable for general turning where a balance of edge strength and surface finish is required. For less rigid setups or interrupted cuts, select a chipbreaker and machining parameters that prioritise stability; for higher feed finishing, maintain recommended cutting data for the grade to preserve surface quality. This guidance helps align process requirements with the insert’s capabilities without overcomplicating selection.

For robust, process-secure turning with Tungaloy’s AH905 grade, contact Metav Werkzeuge for order placement or technical advice: info@metav-werkzeuge.com / +49 2822 7131930 — Metav Werkzeuge will assist with compatibility and application recommendations

Technical data

• Article number: 6859382
• Manufacturer SKU: TUN6859382
• SKU: 6859382-Tungaloy
• Model series: ISO turning indexable inserts
• Material: Carbide

Facts

• Corner radius: 1.2 mm
• Inscribed circle: 12 mm
• Thickness: 4.76 mm
• Geometry angle: 80°
• Clearance angle: 0°

Special features

• Grade: AH905 PVD-coated carbide
• Double-sided with chipbreaker
• Rhombic plate form, 80° geometry
• Cylindrical locating hole
• Compatible with ISO turning holders

FAQ

What applications suit this insert best?
The CNMG120412 AH905 Tungaloy insert is intended for external and internal turning where a wear-resistant, process-secure grade is required; select the chipbreaker and parameters according to workpiece material and machine stability.

Is the insert reversible or indexable on both sides?
The insert is double-sided, allowing rotation to the second cutting edge, which supports economical use of the indexable plate in standard turning cycles.

How does the AH905 grade benefit machining?
AH905 is a PVD-coated carbide grade engineered for wear and chipping resistance; the coating improves abrasive wear performance while the substrate maintains a sharp cutting edge for consistent results.

Does the CNMG120412 fit standard ISO holders?
The insert follows the ISO 120412 designation and is compatible with holders designed for that format when form, free angle, tolerance class, fastening, size and thickness are matched.

What are the key dimensional data to check before ordering?
Check the inscribed circle (12 mm), thickness (4.76 mm), corner radius (1.2 mm), geometry (80° rhombic) and the presence of the cylindrical locating hole to ensure proper fit and clamping.

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.