SNMG120408-FM5 WSM20S WSM20S Wendeplatten - Walter Tools

Take advantage of the combination of Tiger·tec Silver coating, a dedicated FM5 chipformer and robust square geometry to secure stable cutting performance when machining challenging alloys; order via Metav Werkzeuge or consult our specialists for application advice.

SNMG120408-FM5 WSM20S indexable turning insert by Walter Tools — Tiger·tec Silver, FM5 chipformer

The SNMG120408-FM5 WSM20S is a square 90° indexable turning insert designed for demanding turning of rostfreier Stahl and heat‑resistant superalloys, offering a coated‑carbide grade for secure chip formation.

Tiger·tec Silver coated carbide grade
Optimised FM5 chipformer for chip control
Square 90° geometry with 0.8 mm corner
0° negative rake for stable cutting forces

Efficient grade for difficult materials and reliable edge life

The WSM20S grade, developed within the Tiger·tec Silver series, is a coated carbide solution intended specifically for machining rostfreier Stahl and materials listed under ISO group S. The combination of a modern coating system and a carbide substrate improves thermal resistance and reduces wear, which results in more consistent tool life under cyclic thermal loads. For production environments facing workpiece adhesion and high heat generation, this insert supports secure chip formation and helps maintain a stable cutting edge, reducing unscheduled tool changes and improving overall process reliability.

Geometry that prioritises stability and predictable cutting results

A square 90° form with a 0.8 mm corner radius and a 0° (negative) rake angle provides a geometric basis for low vibration and strong edge support. The negative rake helps distribute cutting forces over a larger portion of the insert body, which is beneficial when tackling tough, sticky materials. Coupled with the FM5 chipbreaker, the insert offers controlled chip segmentation and evacuation, which lowers the risk of built‑up edge and promotes repeatable surface quality. These design choices translate directly into fewer stoppages and higher process uptime on CNC lathes.

Practical advantages for machining shops and high‑duty applications

Incorporating this insert into a turning strategy brings measurable productivity benefits: the coated grade extends productive cutting intervals and the chipformer reduces manual chip management, which together contribute to better cycle times and operator safety. The insert’s dimensions (12 mm plate size, thickness code 04) and the M tolerance class ensure compatibility with standard toolholders and predictable positioning for serial production. For plants processing rostfreie Werkstoffe and superalloys, the combination of coating, chip control and geometry supports both economic and technical targets — consistent part quality and reduced tooling overhead.

For reliable turning of rostfreie Stahl and superalloys choose the Walter Tools SNMG120408-FM5 WSM20S insert — contact Metav Werkzeuge for application recommendations or to place an order: info@metav-werkzeuge.com | +49 2822 7131930

Technical Data

• SKU: SNMG120408-FM5-WSM20S-WALTER
• Designation: SNMG120408-FM5 WSM20S
• Product type: indexable turning insert
• Brand: Walter Tools
• Series: Tiger·tec Silver

Facts

• Plate size: 12 mm
• Thickness code: 04
• Corner radius: 0.8 mm
• Rake angle: 0° (negative)
• Form: Square 90°
• Tolerance class: M
• Material groups: S / M

Special features

• Coating: Tiger·tec Silver
• Grade: WSM20S
• Chipformer: FM5
• Execution: G
• Coated carbide
• Suitable for: rostfreie Stahl and heat‑resistant superalloys

FAQ

Which materials is this insert intended for?
The SNMG120408-FM5 WSM20S from Walter Tools is specified for rostfreie Stahl and heat‑resistant superalloys (ISO groups M and S), offering thermal resistance and edge stability for these demanding materials.

What benefit does the FM5 chipformer provide?
The FM5 chipformer produces controlled chip segmentation and improved evacuation, reducing the likelihood of built‑up edge and supporting consistent surface finish during continuous turning.

How does the 0° negative rake influence machining?
A 0° (negative) rake increases edge strength and distributes forces across the insert, which helps when cutting tough or adhesive materials by improving edge retention and reducing chipping.

Is this insert suitable for high‑volume production?
Yes — the combination of Tiger·tec Silver coating, a robust geometry and the FM5 chipbreaker is designed to deliver repeatable performance and longer intervals between indexings, supporting higher productivity in serial machining.

Protected trademarks and trade names are the property of their respective owners. Mark names and protected designations are used for explanation only and do not imply any connection between our company and the listed manufacturers. The offered item is an original, brand‑new product from the manufacturer. Manufacturer/Responsible: AB Sandvik Coromant, Mossvägen 10, 811 34 Sandviken, Sweden; support.coromant@sandvik.com