CNMG120408-MW5 WMP20S WMP20S Wendeplatten - Walter Tools

Take advantage of the combination of Tiger-tec Silver coating, a robust MW5 chipbreaker and precise rhombic geometry for reliable machining of stainless steel; order directly via Metav Werkzeuge or contact the consultants for tailored cutting data and availability.

CNMG120408-MW5 WMP20S indexable turning insert – Tiger-tec Silver, Walter Tools

A CNMG120408-MW5 WMP20S indexable turning insert engineered for secure chip control and sustained edge life when machining stainless steel in medium to robust conditions.

• Tiger-tec Silver coating for reliable edge life
• Optimised MW5 chipbreaker for secure chip control
• 0.8 mm corner radius for robust turning performance
• Rhombic 80° geometry with 0° negative rake

Consistent cutting performance for stainless steel with coated carbide technology

The combination of the WMP20S grade and Tiger-tec Silver coating delivers consistent results when machining stainless steel, materials that typically demand secure chip formation and thermal stability. The coated carbide substrate reduces adhesion and maintains a stable cutting edge under the high temperatures and ductility associated with stainless alloys. This results in fewer built-up edges and more predictable tool life, supporting uninterrupted production cycles and lower variation in finish quality.

Geometry tailored for secure chip flow and edge durability

The rhombic 80° shape together with a 0° negative rake provides mechanical robustness and reliable cutting engagement. The MW5 chipbreaker has been designed to shape chips effectively under the elevated work-hardening tendencies of stainless steel, reducing the risk of entanglement and improving evacuation in continuous turning operations. The 0.8 mm corner radius contributes to edge strength, making the insert suitable for medium to heavier depth-of-cut scenarios without compromising surface integrity.

Process reliability and economic productivity in turning applications

Using a grade matched to the application, such as WMP20S, enables extended cutting intervals and steadier performance across varying batch sizes. The insert’s characteristics promote shorter tool change cycles and improved process security, meaning fewer interruptions and a higher effective uptime on the lathe. For production environments where reproducible component quality and predictable tool life are key metrics, this insert supports both efficiency gains and cost-effectiveness through reduced scrap and stable finishing results.

Speak to Metav Werkzeuge for guidance on cutting parameters and stock availability for the Walter Tools CNMG120408-MW5 WMP20S insert; Metav Werkzeuge’s consultants can advise on optimal feeds, speeds and holder selection — contact Metav Werkzeuge at info@metav-werkzeuge.com or +49 2822 7131930

Technical data

• SKU: CNMG120408-MW5-WMP20S-WALTER
• Label: Drehwendeschneidplatte CNMG120408-MW5 WMP20S Walter Tools
• Manufacturer: Walter Tools
• Series: Tiger-tec Silver
• Grade: WMP20S
• Chipbreaker: MW5
• Geometry: Rhombic 80°
• Free rake angle: 0° negative
• Corner radius: 0.8 mm
• Inscribed circle / size: 12 mm
• Thickness code: 04
• Tolerance class: M
• Material group suitability: stainless steel

Facts

• Size: 12 mm
• Corner radius: 0.8 mm
• Free rake angle: 0° negative
• Thickness code: 04
• Tolerance class: M

Special features

• Tiger-tec Silver coating
• WMP20S coated carbide grade
• MW5 optimised chipbreaker
• Rhombic 80° insert form
• Suitable for stainless steel
• Robust edge for medium to heavy turning

FAQ

What materials is this insert suitable for?
This insert is specifically designed for machining stainless steel and performs reliably under the medium to robust conditions indicated for the CNMG120408-MW5 WMP20S insert from Walter Tools.

How does the MW5 chipbreaker help in stainless steel turning?
The MW5 chipbreaker on the Walter Tools insert shapes and breaks chips to reduce entanglement and improve evacuation, which is particularly beneficial when turning stainless steel prone to long, stringy chips.

What does the 0° negative rake imply for cutting?
A 0° negative rake provides a stable cutting edge and increased mechanical strength, making the insert suitable for more robust cutting parameters and improving resistance to chipping during interrupted cuts.

Can this insert be used for finishing operations?
With its 0.8 mm corner radius and coated carbide composition, the insert can achieve acceptable surface finishes in semi-finishing and certain finishing passes, depending on the chosen cutting data.

Is the CNMG120408-MW5 WMP20S part of a recognised coating series?
Yes, the insert belongs to the Tiger-tec Silver series, a coating technology designed to enhance wear resistance and process stability when machining challenging alloys like stainless steel.

Manufacturer/Responsible: Walter Deutschland GmbH, Derendinger Straße 53, 72072 Tübingen

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