WNMG080408-RM5 WSM20S RM5 Wendeplatten - Walter Tools

The combination of a Tiger·tec Silver coated grade and the RM5 chipformer delivers stable chip control and extended edge life for demanding turning tasks; the Trigon 80° form with a 0.8 mm corner radius provides versatility between roughing and semi-finishing. Order the insert directly via Metav Werkzeuge or consult our application specialists for process-adapted recommendations.

WNMG080408-RM5 WSM20S — Trigon 80° turning insert, Tiger·tec Silver, Walter Tools

WNMG080408-RM5 WSM20S is a trigon-shaped turning insert engineered for heavy-duty machining of rostfreier Stahl and heat-resistant alloys, combining a robust negative geometry with a precision chipformer for reliable production performance.

• Tiger·tec Silver coating for high wear resistance
• RM5 chipformer for secure chip control
• Trigon 80° geometry for versatile turning
• 0.8 mm corner radius for durable cutting edge

Reliable performance on rostfreier Stahl and superalloys

The WSM20S grade, part of the Tiger·tec Silver family, is a coated carbide solution tailored for challenging materials such as rostfreier Stahl and high-temperature superalloys. Its coating chemistry improves thermal stability and reduces flank wear, which translates into longer tool life and fewer indexings in serial production. The insert’s negative 0° rake configuration increases edge strength and permits higher feed rates under interrupted cuts, while the Trigon 80° profile balances accessibility and strength for both external turning and light profiling tasks. This combination supports consistent cycle times and reduces process variability in daily machining.

Stable chip control and cutting-edge integrity

The RM5 chipformer on this trigon insert is designed to manage chip formation in materials that tend to produce long, stringy chips or generate high cutting heat. By promoting segmented or curled chips, the chipformer enhances evacuation and reduces the risk of re-cutting, which helps preserve the cutting edge and workpiece surface. The 0.8 mm corner radius provides a compromise between strength and surface finish: a larger radius increases edge robustness for heavier cuts, while still enabling acceptable surface quality during semi-finishing. In practice, this results in fewer interruptions, improved throughput and less manual rework after turning operations.

Practical advantages and recommended applications

Using the WNMG080408-RM5 WSM20S insert in workshop and production settings brings tangible benefits: greater process reliability when machining tough alloys, lower tooling consumption due to enhanced wear resistance, and simplified insert selection thanks to a standard trigon form factor. The insert is particularly suited to operations on rostfreier Stahl and titanium or nickel-based alloys where heat resistance and edge stability are essential. For those less familiar with chipformer geometries, the RM5 designation denotes an emphasised chip control design ideal for medium to heavy turning, whereas the trigon shape facilitates multiple cutting edges per index for economical usage.

For tailored advice on integrating Walter Tools trigon inserts into existing turning processes and for fast supply via Metav Werkzeuge, contact our technical team at info@metav-werkzeuge.com or call +49 2822 7131930 — Metav Werkzeuge’s specialists will assist with application parameters and ordering.

Technical Data

• Article number: WNMG080408-RM5-WSM20S-WALTER
• Product type: Turning insert (drehwendeschneidplatte)
• Manufacturer: Walter Tools
• Grade: WSM20S
• Series: Tiger-tec Silver
• Designation: WNMG080408-RM5 WSM20S

Core specifications

• Corner radius: 0.8 mm
• Free rake angle: 0° (negative)
• Plate form: Trigon 80°
• Plate size: 08
• Plate thickness: 04
• Tolerance class: M

Design & features

• Coating: Tiger·tec Silver
• Chipformer: RM5
• Material application: S / M (superalloys, rostfreier Stahl)
• Execution: G
• Plate designation without grade: WNMG080408-RM5

FAQ

Which materials is this insert designed for?
The WNMG080408-RM5 WSM20S insert from Walter Tools is designed for machining rostfreier Stahl and heat-resistant superalloys (ISO groups M and S), offering enhanced thermal and edge stability for challenging alloys.

What benefits does the Tiger·tec Silver coating provide?
The Tiger·tec Silver coating on the WSM20S grade increases thermal resistance and reduces wear rates, helping to extend tool life and maintain a consistent cutting edge under elevated temperatures typical of rostfreier Stahl and superalloy machining.

How does the RM5 chipformer affect machining?
The RM5 chipformer promotes controlled chip breakage and reliable evacuation, reducing the chance of long, entangling chips and improving surface quality and process security during medium to heavy turning operations.

Is the Trigon 80° form suitable for finishing passes?
The Trigon 80° geometry with a 0.8 mm corner radius is primarily suited to roughing and semi-finishing; it provides a robust edge for heavier cuts while allowing acceptable surface finishes in follow-up operations.

What does the negative 0° rake mean for cutting conditions?
A negative 0° rake increases edge strength and resistance to chipping, making the insert appropriate for interrupted cuts and tougher materials; this geometry may require slightly higher cutting forces compared with more positive geometries.

Walter Tools: Walter Deutschland GmbH, Derendinger Straße 53, 72072 Tübingen

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