WNMG080408-FM5 WSM20S WSM20S Wendeplatten - Walter Tools

Benefit from the combination of the Tiger·tec Silver coating and the FM5 chipbreaker to secure stable chip control and extended tool life in demanding turning applications; order the insert directly via Metav Werkzeuge or ask the consultants for tailored recommendations.

WNMG080408-FM5 WSM20S – indexable turning insert, Tiger·tec Silver, FM5 (Walter Tools)

WNMG080408-FM5 WSM20S is a Trigon 80° indexable turning insert engineered for robust performance when machining stainless steels and heat-resistant superalloys in demanding turning processes

• Tiger·tec Silver coating for extended life
• FM5 chipbreaker ensures secure chip control
• Optimised for stainless steels and superalloys
• Trigon 80° geometry for stable cutting

High process reliability thanks to advanced coating

The WNMG080408-FM5 WSM20S insert combines a modern Tiger·tec Silver coating with a coated carbide substrate to improve wear resistance and thermal stability when cutting tough materials. The WSM20S grade is designed specifically for applications where heat generation and build-up of material on the edge are critical factors; this supports consistent chip formation and reduces the risk of edge deterioration. For operations involving stainless steels and superalloys, the coating helps maintain a stable cutting edge, which results in fewer interruptions and more predictable tool life.

Geometry and chip control for consistent quality

A Trigon 80° plate form together with the FM5 chipbreaker delivers a balance of strength and chip control for medium to heavy turning passes. The insert’s 0° negative rake contributes to a robust cutting edge under high loads, while the 0.8 mm corner radius enhances edge support for improved surface finish and repeatability. These geometric features enable secure engagement with the workpiece and reduced vibration, which translates into consistent dimensional accuracy and better surface quality on challenging materials.

Suitable applications and production benefits

The design is particularly appropriate for machining tasks classified under ISO groups M (stainless steels) and S (heat-resistant superalloys and titanium), offering a reliable option for workshop and production environments that process these materials frequently. With tolerance class M and execution G, the insert supports reproducible positioning and stable cutting forces, helping to lower the risk of premature insert failure. Adopting this grade and geometry can reduce downtime, improve process stability and contribute to a more economical production flow over time.

Contact Metav Werkzeuge today for expert advice on Walter Tools Tiger·tec Silver inserts such as the WNMG080408-FM5 WSM20S and to discuss availability and suitable cutting parameters; eMail info@metav-werkzeuge.com or call +49 2822 7131930

Technical Data

• Article number: WNMG080408-FM5-WSM20S-WALTER
• Designation: WNMG080408-FM5 WSM20S
• Manufacturer: Walter Tools
• Product type: Indexable turning insert

Facts

• Corner radius: 0.8 mm
• Free cutting angle: 0° (negative)
• Insert size: 08
• Thickness: 04
• Trigon angle: 80°

Special features

• Series / grade: Tiger·tec Silver
• Grade designation: WSM20S
• Chipbreaker: FM5
• Suitable materials: stainless steels (M), superalloys / titanium (S)
• Tolerance class: M
• Execution: G

FAQ

What materials is this insert designed for?
The WNMG080408-FM5 WSM20S indexable turning insert by Walter Tools is optimised for stainless steels (ISO group M) and heat-resistant superalloys or titanium (ISO group S).

How does the Tiger·tec Silver coating improve performance?
The Tiger·tec Silver coating on the WSM20S grade increases thermal resistance and wear protection, promoting stable cutting edges and extended tool life during prolonged machining of difficult materials.

Which features support chip control in interrupted cuts?
The FM5 chipbreaker combined with the Trigon 80° geometry and a 0° negative rake offers robust chip control and edge strength, reducing the likelihood of built-up edge and improving surface consistency.

Is this insert suitable for heavy machining or finishing passes?
The combination of a 0.8 mm corner radius and the negative rake makes the insert well suited to heavier turning operations where edge stability is required; it can also deliver acceptable surface finishes with appropriate cutting parameters.

How does tolerance class M affect interchangeability?
Tolerance class M ensures consistent manufacturing tolerances for the insert, supporting repeatable seating and predictable cutting behaviour when replacing inserts in compatible tool holders.

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

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