SCMT120408-FM4 WSM30S WSM30S Wendeplatten - Walter Tools

Take advantage of the combination of the WSM30S grade and the Tiger-tec Silver coating for longer tool life and secure chip formation when machining stainless steel and heat‑resistant superalloys; for tailored application advice or to integrate this insert into existing toolsets, contact Metav Werkzeuge or ask our consultants.

SCMT120408-FM4 WSM30S indexable turning insert – square 90°, Tiger-tec Silver by Walter Tools

The SCMT120408-FM4 WSM30S is a square 90° indexable turning insert engineered for robust machining of stainless steel and heat‑resistant superalloys, combining a wear‑resistant coating with a chipbreaker optimised for secure cutting.

• Tiger-tec Silver coating for improved wear resistance
• WSM30S grade for stainless steel and superalloys
• FM4 chipbreaker for stable chip formation
• 7° clearance and 0.8 mm radius for fine surface quality

High‑performance grade optimised for demanding alloys

The combination of the WSM30S coated carbide grade and the Tiger‑tec Silver technology targets applications where material toughness and heat generation are critical. The chemical and mechanical design of the coating increases thermal stability and reduces flank wear, which prolongs the usable life of the cutting edge. For machining stainless steel and nickel‑based alloys, this results in more consistent cutting forces and fewer interruptions for tool changes, supporting a higher overall process output.

Geometry and chip control for predictable surface finish

A square 90° format with a 0.8 mm corner radius and a 7° clearance angle offers a balance between edge strength and finish capability. The FM4 chipbreaker is shaped to control chip form in sticky or ductile materials, minimising entanglement and promoting regular chip evacuation. A defined corner radius helps produce a stable machined face and reduces the risk of built‑up edge; the geometry therefore contributes directly to achieving repeatable surface quality and reduced rework.

Productivity gains through process reliability

Stable edge behaviour and enhanced coating performance translate into fewer unplanned stops and more productive machining cycles. The insert’s tolerance class M and its robust grade are suitable for serial production and tougher turning tasks, where predictable tool life matters economically. The net effect is improved tool utilisation and lower downtime, which supports efficient shopfloor scheduling and helps to meet delivery targets with greater confidence.

For specific application recommendations or batch‑sized tool plans based on the Walter Tools SCMT120408‑FM4 WSM30S insert, contact Metav Werkzeuge for expert advice and rapid delivery at info@metav-werkzeuge.com or +49 2822 7131930

Technical Data

• Article number: SCMT120408-FM4-WSM30S-WALTER
• Manufacturer: Walter Tools
• Product type: indexable turning insert
• Designation: SCMT120408-FM4 WSM30S

Facts

• Insert size: 12 mm
• Corner radius: 0.8 mm
• Clearance angle: 7°
• Plate thickness: 04
• Plate form: square 90°
• Tolerance class: M

Special features

• Grade: WSM30S
• Series: Tiger‑tec Silver
• Chipbreaker: FM4
• Material suitability: stainless steel; heat‑resistant superalloys / titanium
• Execution: T

FAQ

Is this insert suitable for stainless steel?
Yes. The WSM30S grade in the SCMT120408‑FM4 WSM30S insert is optimised for stainless steel (ISO group M), providing stable edge behaviour and controlled chip formation when cutting ductile, work‑hardening alloys.

What advantages does the FM4 chipbreaker offer?
The FM4 chipbreaker is designed to produce short, controllable chips in sticky or ductile materials, reducing the risk of chip entanglement and improving surface finish consistency when using the Walter Tools insert.

Can this insert be used on titanium or nickel‑based superalloys?
Yes. The WSM30S grade and Tiger‑tec Silver technology support machining of heat‑resistant superalloys and titanium (ISO group S), where thermal resistance and edge stability are essential.

Which geometry should be chosen for finishing applications?
For fine finishing, the square 90° format with a 0.8 mm corner radius and 7° clearance provides a good compromise between rigidity and surface quality; the SCMT120408‑FM4 geometry is suitable for such tasks.

Manufacturer/Responsible: AB Sandvik Coromant, Mossvägen 10, 811 34 Sandviken, Sweden, support.coromant@sandvik.com

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