SDMT 1204AF AH140 Wendeplatten - Tungaloy

Take advantage of the combination of a PVD-coated carbide grade (AH140) for extended toollife, a sharp, process-secure cutting edge and a standardized seat geometry that reduces setup time; order directly via Metav Werkzeuge or consult our specialists for application matching.

SDMT 1204AF AH140 milling insert – Tungaloy square insert for general milling with cylindrical hole and single-sided chipbreaker

SDMT1204AF AH140 Tungaloy-Wendeplatte is a square, indexable milling insert engineered for face, shoulder, slot and high-feed milling where a sharp cutting edge and process reliability are required.

• PVD-coated grade AH140 for wear resistance
• Square 12 mm format with 90° cutting angle
• Cylindrical hole with one-side countersink (40°–60°)
• Single-sided chipbreaker for stable chip control

Maximise machining consistency with a wear-resistant PVD grade

The SDMT1204AF AH140 Tungaloy insert combines a PVD-coated carbide substrate with a geometry optimised for repeatable performance in a range of milling tasks. The AH140 grade is formulated to resist both wear and chipping, which translates into longer indexed cycles and fewer tool changes. For workshops aiming to reduce non-productive time, this grade delivers predictable flank wear behaviour and maintains a sharp cutting edge under typical milling forces, supporting consistent surface finish and dimensional accuracy.

Secure clamping and versatile mounting reduce downtime

Designed with a cylindrical hole plus single-side countersink (40°–60°), the insert ensures secure seating in compatible cutter bodies and consistent seat repeatability. The square 12 mm geometry and 90° cutting angle allow straightforward replacement and flexibility across shoulder and face milling operations. Because seat, geometry and cutter body must match, using the correct holder family is essential for achieving the expected clamping force and avoiding abnormal vibration — a simple precaution that improves process stability and tool life.

Practical benefits of the geometry and chip control

A single-sided chipbreaker provides controlled chip formation for a wide range of chip loads, improving evacuation and reducing risk of re-cutting. With a 15° relief angle and zero corner radius, the insert is suited to applications requiring a defined edge for accurate shoulders and contours. The combination of geometry and PVD surface treatment helps maintain cutting performance across mixed material batches and varying feed conditions, supporting repeatable productivity and smoother downstream processes.

Application guidance and system compatibility

This insert is intended for use in Tungaloy milling systems and similar holder families where the insert seat and clamping method match the SDMT series specification. Typical applications include face, shoulder, slot, high-feed and contour milling depending on the assigned cutter body. Selection of cutting parameters should reflect the PVD-coated carbide nature of the grade and the workpiece material; conservative feeds at first cut help verify process behaviour and extend wear life. For specialised substrates, confirm suitability with process trials or consult technical documentation.

Contact Metav Werkzeuge for application advice and to request the SDMT 1204AF AH140 insert for secure, long-life milling performance – our specialists will assist with cutter family matching and process optimisation

Technical data

• Article number: 6817236
• Manufacturer SKU: TUN6817236
• SKU: 6817236-Tungaloy
• Model series: Fräswendeschneidplatten
• Designation: SDMT1204AF AH140 Tungaloy-Wendeplatte

Core specifications

• Shape: square, 12 mm
• Thickness: 4.76 mm
• Cutting angle: 90°
• Relief angle: 15°
• Corner radius: 0 mm

Special features

• Material: carbide (Hartmetall)
• Coating/grade: AH140 (PVD-coated)
• Hole style: cylindrical hole + one-sided countersink (40°–60°)
• Chipbreaker: single-sided
• Typical application: milling (Fräsen)

FAQ

What milling operations suit this insert best?
The SDMT1204AF AH140 insert is designed primarily for face, shoulder, slot, high-feed and contour milling when used in compatible Tungaloy milling systems.

Is the AH140 grade suitable for stainless or alloyed steels?
The PVD-coated AH140 grade offers good resistance to wear and chipping and is suitable for a broad range of steels and alloyed materials; machining parameters should be adjusted to the specific workpiece.

How does the cylindrical hole with countersink affect mounting?
The cylindrical hole plus one-sided countersink (40°–60°) gives secure clamping and repeatable seating in appropriately designed cutter bodies; matching seat geometry is essential for process stability.

Can this insert be used for high-feed milling?
Yes, depending on the assigned cutter family and correct setup, the square 12 mm format with 90° angle supports high-feed and productive milling strategies.

What chip control can be expected from the single-sided chipbreaker?
The single-sided chipbreaker promotes consistent chip formation and evacuation under typical milling feeds, helping to reduce re-cutting and support stable surface finish.

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.