SCMT 120404 AH725 Wendeplatten - Tungaloy

Take advantage of the combination of PVD-coated carbide, a fracture‑resistant AH725 grade and precise ISO geometry for reliable turning performance; order the SCMT120404 AH725 insert directly via Metav Werkzeuge or consult the team for application support.

SCMT 120404 AH725 Turning Insert (ISO) – Tungaloy

SCMT120404 AH725 is an ISO‑standard square indexable insert designed for precision external and internal turning in mixed steel materials.

• PVD-coated carbide for consistent edge life
• Universal fracture-resistant AH725 grade
• Square insert, 12 mm size and 90° geometry
• Central hole with 40°–60° countersink

Consistent performance across steel and stainless alloys

The AH725 grade is a PVD‑coated carbide designed for universal use, offering a balance between toughness and wear resistance that suits both steel and stainless steel. The combination of a fracture‑resistant substrate and thin PVD layer helps to maintain cutting edge integrity in interrupted cuts and variable feed conditions. With a 0.4 mm radius and 90° included angle, the geometry supports robust metal removal while preserving workpiece contour, making the insert appropriate for a wide range of finishing and medium‑roughing operations.

Improved process stability and reduced downtime

Built to enhance process stability, this insert promotes predictable tool life and consistent surface finish, reducing unscheduled tool changes and machine idle time. The chip control is aided by the single‑sided chipbreaker form, which helps avoid build‑up and unstable chips that can damage parts or holders. Better edge retention from the coating translates into fewer indexings and lower tooling costs per component, supporting efficient production runs and dependable cycle times.

Straightforward integration with ISO holders and clamping systems

As an ISO‑standard insert, the SCMT120404 integrates easily with compatible external holders, boring bars and clamping kits when the form, clearance, tolerance class, fastening type, size and thickness match. The insert’s mounting uses a central cylindrical hole with a one‑sided countersink (40°–60°), allowing secure fastening with standard screws and shims. When assembling the system, ensure the insert seat and clamp provide full support to preserve cutting geometry and maintain repeatable accuracy.

Practical guidance for selection and use

Select the single‑sided chipbreaker and AH725 grade according to the workpiece material, machine rigidity and cutting strategy; the grade performs particularly well on smaller tools and where high process security is required. The PVD coating improves surface finish and wear resistance but benefits from controlled cutting temperatures and appropriate feeds. For interrupted cuts or unstable setups, prioritise the fracture‑resistant characteristics of the grade and check clamping torque and seat cleanliness before operation to avoid premature failure.

For tailored application advice or to secure genuine Tungaloy SCMT120404 AH725 inserts, contact Metav Werkzeuge for technical consultation and fast processing via info@metav-werkzeuge.com or +49 2822 7131930

Technical data

• Article number: 6856785
• Manufacturer SKU: TUN6856785
• SKU: 6856785-Tungaloy
• Model series: ISO turning indexable inserts
• Material: Carbide

Facts

• Insert designation: SCMT120404
• ISO code: 120404
• Insert size: 12 mm
• Thickness: 4.76 mm
• Nose radius: 0.4 mm
• Clearance angle: 7°
• Included angle: 90°

Special features

• Grade: AH725 (PVD‑coated)
• Chipbreaker: single‑sided
• Mounting: central cylindrical hole with one‑sided countersink (40°–60°)
• Shape: square
• Typical application: external and internal turning

FAQ

What materials is this insert suitable for?
The SCMT120404 AH725 insert is specified for versatile machining of steel and stainless steel, with the AH725 grade engineered for fracture resistance across varying workpiece alloys.

How does the PVD coating benefit machining performance?
PVD coating on the AH725 grade enhances wear resistance and helps maintain edge integrity, resulting in longer intervals between indexings and improved surface finish on turned components.

What mounting features should be checked during installation?
Verify holder seat condition, clamp alignment and the central cylindrical hole with its one‑sided countersink (40°–60°) to ensure secure fastening and repeatable positioning of the insert.

Is this insert suitable for both finishing and medium‑roughing operations?
Yes, the combination of a 0.4 mm radius and robust AH725 grade makes the insert adaptable for a range of finishing to medium‑roughing tasks, particularly when combined with an appropriate chipbreaker and stable setup.

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.