CNMG120412-MU5 WSM20S WSM20S Wendeplatten - Walter Tools

Take advantage of a high‑security turning solution that combines the Tiger·tec Silver coating with a robust WSM20S carbide grade for stable chip control and long tool life; order the inserts directly via Metav Werkzeuge or consult our specialists for application advice.

CNMG120412-MU5 WSM20S rhombic 80° turning insert by Walter Tools — Tiger·tec Silver coating for rostfreier Stahl and superalloys

CNMG120412-MU5 WSM20S is a negative‑rake rhombic insert designed for reliable finishing and semi‑finishing in demanding materials such as rostfreier Stahl and heat‑resistant superalloys

• Tiger·tec Silver coated grade WSM20S
• MU5 chipbreaker for secure chip formation
• Rhombic 80° geometry with 1.2 mm corner radius
• Suited for rostfreier Stahl and high‑temp alloys

Consistent performance where heat and toughness challenge production

The combination of the Tiger·tec Silver coating and the WSM20S coated‑carbide grade provides a resilient cutting edge that is engineered to resist thermal loading and abrasive wear in difficult turning operations. The coating reduces friction at the tool–workpiece interface, which helps to moderate temperature peaks during cutting and contributes to stable chip formation. For operations on rostfreier Stahl or nickel‑based alloys, this means fewer interruptions caused by built‑up edge and more predictable tool life, supporting a smoother production flow and reduced scrap rates.

Controlled chip breaking and surface quality for dependable batch runs

The MU5 chipbreaker is optimised for small to medium depths of cut and is intended to produce short, well controlled chips that evacuate cleanly from the cut. That geometry reduces the risk of chip entanglement and protects the workpiece surface, resulting in improved surface finish and less downstream rework. The insert’s negative free angle configuration increases edge strength, delivering higher resistance to fracturing under interrupted cuts or heavy radial engagement while maintaining dimensional consistency across a production batch.

Geometry and edge detail that support precision turning

A rhombic 80° shape with a 1.2 mm corner radius balances edge strength with access to tight features and form tolerances. The negative 0° free angle provides a robust seat for the cutting edge, which is advantageous when facing variable cutting forces. These characteristics make the insert suitable for applications where repeatability and tool reliability are priorities, for example when turning components that demand tight concentricity or consistent diameters over long runs.

Material compatibility and practical application notes

The insert is classified for use across material groups S / M, reflecting its suitability for heat‑resistant superalloys and rostfreie Stähle respectively. In practice, this means the grade is tailored to manage low thermal conductivity materials and those prone to strain‑hardening. When programming feeds and speeds, focus on conservative entry values for unfamiliar alloys, verify chip shape, and adjust coolant and cutting parameters to maintain the stable cutting conditions that the Tiger·tec Silver technology is designed to support.

Contact Metav Werkzeuge today for tailored cutting data sheets or to discuss how Walter Tools CNMG120412-MU5 WSM20S inserts can be integrated into existing turning processes

Technical data

• Article number: CNMG120412-MU5-WSM20S-WALTER
• Product designation: CNMG120412-MU5 WSM20S
• Manufacturer: Walter Tools / part of Sandvik group
• Type: Drehwendeschneidplatte (turning insert)
• Series: Tiger·tec Silver

Core specifications

• Geometry: Rhombus 80°
• Corner radius: 1.2 mm
• Free angle: 0° (negative)
• Insert size: 12
• Thickness code: 04
• Tolerance class: M

Design features & suitability

• Coating: Tiger·tec Silver
• Grade: WSM20S (coated carbide)
• Chipbreaker: MU5
• Material groups: S / M (superalloys / rostfreier Stahl)
• Execution: G

FAQ

What materials is this insert best suited for?
The CNMG120412-MU5 WSM20S insert is intended for materials in groups S and M, specifically heat‑resistant superalloys and rostfreier Stahl, where its coating and grade support stable cutting and edge life.

How does the MU5 chipbreaker affect machining?
The MU5 chipbreaker on this Walter Tools insert promotes short, controlled chips, improving evacuation and surface finish while reducing the risk of chip‑related interruptions.

Is this insert suitable for interrupted cuts?
Yes; the negative 0° free angle and the robust corner radius make the insert resistant to shock and edge chipping during interrupted turning operations.

Which series and coating technology does this insert use?
The insert belongs to the Tiger·tec Silver series and uses the Tiger·tec Silver coating to lower friction and enhance thermal resistance in demanding applications.

Can this insert be used for finishing and semi‑finishing?
The rhombic 80° shape and 1.2 mm corner radius provide a balance of strength and access, making it suitable for both finishing and semi‑finishing tasks depending on process parameters.

Manufacturer/Responsible: Walter Tools (part of AB Sandvik Coromant); AB Sandvik Coromant, Mossvägen 10, 811 34 Sandviken, Sweden; support.coromant@sandvik.com

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