TNMG220408-RM5 WSM20S RM5 Wendeplatten - Walter Tools

Take advantage of the combination of Tiger·tec Silver coating, a robust RM5 chipbreaker and a 0.8 mm corner radius for consistent edge life and secure machining of stainless steels and superalloys; order the insert directly via Metav Werkzeuge or contact the consultants for application support.

TNMG220408-RM5 WSM20S indexable turning insert – for stainless steels and superalloys | Walter Tools

The TNMG220408-RM5 WSM20S is an indexable turning insert engineered for demanding turning operations on stainless steels, heat-resistant superalloys and titanium, offering stable cutting edges and reliable chip control.

• Tiger·tec Silver coating for heat resistance
• Optimised RM5 chipbreaker for stable chips
• Triangle 60° insert with 0.8 mm corner radius
• Negative 0° rake for interrupted cuts

Stable edges for high-temperature materials

The coated carbide grade from the Tiger·tec Silver family delivers thermal resistance and wear protection that supports longer tool life when machining difficult materials. Thanks to the WSM20S specification and the robust coating technology, the insert maintains a steady cutting edge under elevated temperatures, reducing flank wear and the need for frequent index changes. This translates into fewer tool interventions and more predictable process windows for serial production.

Predictable chip control and process security

An RM5 chipbreaker designed for this geometry promotes consistent chip formation when facing the tough characteristics of superalloys and austenitic stainless steels. The controlled chips aid coolant flow and evacuation, lowering the risk of edge build-up and fluctuation in cutting forces. The result is enhanced process security, fewer surface defects and a reduction in unplanned rework in series machining environments.

Geometry tuned for roughing and interrupted cuts

The triangular 60° shape with a 0.8 mm corner radius and a negative 0° rake angle is well suited to robust turning tasks, including interrupted cuts and roughing passes. The combination of insert form and radius offers strength at the cutting edge, enabling higher feed rates and better resistance to mechanical shock. Where higher stability is required, this geometry supports effective engagement with the workpiece while preserving dimensional consistency.

Clear selection guidance for workshop planners

The insert is specified for material groups M and S (stainless steels and heat-resistant superalloys/titanium), making it a practical choice for mixed-production shops that run corrosion-resistant alloys alongside high-temperature materials. The coated carbide construction and tolerance class M ensure compatibility with industrial tool holders and predictable interchangeability. For process setup, select cutting parameters that prioritise edge stability and chip evacuation to exploit the insert’s strengths.

For expert advice on selecting the right Walter Tools turning inserts for specific stainless steel or superalloy applications, contact Metav Werkzeuge by e‑mail at info@metav-werkzeuge.com or by phone at +49 2822 7131930 — Metav Werkzeuge will provide application support and supply options.

Technical data

• Article number: TNMG220408-RM5-WSM20S-WALTER
• Designation: TNMG220408-RM5 WSM20S
• Type: indexable turning insert
• Manufacturer: Walter Tools
• Series: Tiger·tec Silver

Facts

• Insert size: 22
• Plate thickness: 04
• Corner radius: 0.8 mm
• Shape: triangle 60°
• Rake angle: 0° (negative)

Special features

• Grade: WSM20S (coated carbide)
• Chipbreaker: RM5
• Material suitability: stainless steels (M), superalloys / titanium (S)
• Tolerance class: M

FAQ

What materials is this insert suited for?
The TNMG220408-RM5 WSM20S insert from Walter Tools is formulated for stainless steels (M) and heat-resistant superalloys and titanium (S), offering thermal stability and edge strength for these groups.

How does the RM5 chipbreaker affect machining?
The RM5 chipbreaker produces controlled chips that improve evacuation and reduce edge build-up; when used with the WSM20S grade, it supports consistent surface quality and process stability.

Which applications benefit most from this triangular insert?
The triangle 60° shape with a 0.8 mm radius is ideal for roughing and interrupted-turning tasks where robust edge strength and mechanical stability are required.

Is the coating technology important for performance?
Yes — the Tiger·tec Silver coating on the WSM20S grade increases heat resistance and wear protection, extending edge life under elevated cutting temperatures.

How should users select cutting parameters?
Choose parameters that favour edge stability and chip control: moderate cutting speeds for stainless steels and higher heat-resistant alloys, with feeds adjusted to exploit the 0.8 mm corner radius and the RM5 chipbreaker.

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

Protected trademarks and product names are the property of their respective owners. Mark names and protected designations are used for explanation only. There is no affiliation between our company and the brands mentioned. The offered item is an original, factory‑new product of the manufacturer.