RCMT 1204EN AH140 Wendeplatten - Tungaloy

A compact, PVD-coated cemented carbide insert in AH140 grade with a 7° relief angle and single-sided chipbreaker combines sharp-edge performance with process security; order the insert directly via Metav Werkzeuge or consult our specialists for application advice.

RCMT RCMT1204EN AH140 Tungaloy indexable milling insert for milling

RCMT1204EN AH140 Tungaloy insert designed for application in indexable milling systems for face, shoulder, slot, high-feed and contour milling depending on the assigned cutter family

• PVD-coated cemented carbide AH140
• Sharp cutting edge with 7° relief angle
• Round 12 mm insert, 4.76 mm thick
• Cylindrical hole with single-side countersink (40°–60°)

Reliable chip control for productive milling

The round indexable insert provides consistent chip formation thanks to its single-sided chipbreaker, which reduces the risk of irregular chips and machine stoppages. In practical terms, this means fewer interruptions during batch production and more predictable cycle times. The combination of a defined chipbreaker geometry and the circular form also facilitates smooth transitions in contours and shoulder passes, supporting stable cutting forces and improved surface quality.

Durable cutting edge and coating for process security

Made from cemented carbide and finished with a PVD coating, the grade AH140 is developed for a balance of wear resistance and fracture toughness. This composition is particularly suited when a sharp cutting edge and high process reliability are required simultaneously. The surface treatment helps to reduce adhesion and thermal wear, extending edge life under moderate to demanding milling conditions and lowering the frequency of index changes.

Compact geometry that eases tool integration

With a nominal size of 12 mm and a plate thickness of 4.76 mm, the insert fits into many standard milling bodies where matching of seat, geometry and cutter body is essential. The cylindrical hole with a single-side countersink (40°–60°) ensures accurate seating and secure clamping, which in turn maintains repeatability across re-indexing. The 7° relief angle reduces rubbing on the flank, improving entry behaviour and reducing built-up edge on softer materials.

Application flexibility and machining benefits

This insert is intended for a broad range of milling tasks — from planing and shoulder operations to high-feed and contour work, depending on the chosen tool family. The AH140 grade is optimised for resistant wear behaviour and chipping protection, offering a practical solution when machining demands both a fine initial edge and robust performance. Selecting this insert can contribute to fewer rejects, less rework and a more predictable production flow.

For reliable milling performance with Tungaloy-grade security, contact Metav Werkzeuge to specify the correct cutter body or to receive tailored application recommendations.

Technical data

• Article number: 5812596

Core specifications

• Designation: RCMT1204EN AH140
• Manufacturer SKU: TUN5812596
• Size: 12 mm
• Thickness: 4.76 mm
• Relief angle: 7°
• Countersink angle: 40°–60°

Special features

• Material: cemented carbide
• Coating: PVD
• Grade: AH140
• Shape: round insert
• Chipbreaker: single-sided
• Hole: with cylindrical hole and one-sided countersink
• Typical use: milling (face, shoulder, slot, high-feed, contour)
• Model series: Indexable milling inserts (Fräswendeschneidplatten)

FAQ

What materials is this insert suited to machine?
The RCMT1204EN AH140 Tungaloy insert is designed for general milling tasks and provides a balance of wear resistance and toughness; it is suitable for a wide range of engineering materials where a sharp edge and process stability are required.

How is the insert clamped in the milling body?
The insert features a cylindrical hole with a single-side countersink (40°–60°) to ensure secure seating and reliable clamping when used with compatible Tungaloy milling bodies.

Can the AH140 grade withstand interrupted cuts?
The AH140 grade combines wear resistance with chipping protection, offering improved performance under conditions that can cause edge breakdown; it therefore performs well in many interrupted-cut scenarios within its intended application range.

Is the coating important for tool life?
Yes, the PVD coating on the cemented carbide insert reduces adhesion and thermal wear, contributing to longer edge life and more consistent machining results over a production run.

Which cutter bodies are compatible with the insert?
Compatibility requires matching the insert seat, geometry and cutter body; the RCMT1204EN designation indicates the nominal form and must be used with milling bodies that accept RCMT-style round inserts.

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.