TCMT090208-FM4 WSM20S FM4 Wendeplatten - Walter Tools

Take advantage of the combination of Tiger·tec Silver coating and the WSM20S grade to secure stable cutting performance in stainless steels and heat-resistant alloys; the FM4 chipbreaker plus a 0.8 mm corner radius ensure reliable chip control and consistent surface quality in continuous production. Order the insert via Metav Werkzeuge or contact our advisers for cutting data and application support.

TCMT090208-FM4 WSM20S — Indexable Turning & Drilling Insert (Walter Tools)

The TCMT090208-FM4 WSM20S is a triangular 60° indexable insert designed for turning and boring operations on stainless steels and heat‑resistant superalloys, combining a thermal‑stable coating with a chipbreaker tuned for secure chip formation.

• Tiger·tec Silver coating for thermal stability
• WSM20S grade for stainless and superalloys
• FM4 chipbreaker for secure chip control
• Triangular 60° form with 0.8 mm corner radius

High‑performance grade tailored for difficult materials

The WSM20S grade, built on Walter Tools’ Tiger·tec Silver technology, brings a balance of heat resistance and cutting‑edge stability when machining demanding materials. As a coated cemented carbide grade, it supports secure chip formation and reduces edge build‑up when working with stainless steels and heat‑resistant alloys. For production environments where thermal loads and abrasive wear shorten tool life, this grade extends effective cutting time and helps maintain dimensional stability of components.

Geometry and chip control for repeatable surface quality

The triangular 60° plate form combined with the FM4 chipbreaker yields controlled chip flow and reliable evacuation in both turning and light boring tasks. The 0.8 mm corner radius supports a durable cutting edge that resists chipping while still enabling a good surface finish. The modest 7° clearance angle helps avoid rubbing on the workpiece and keeps cutting forces predictable, which is advantageous on machines where consistent tool engagement is essential for part repeatability.

Process security and predictable tool life

By pairing a resilient coating system with a carbide grade optimised for high temperatures, this insert provides process security in series production. The coating reduces friction and thermal softening at the cutting zone, while the substrate and chipbreaker design limit notch wear and edge degradation. In practice, this leads to fewer tool changes, reduced downtime and more consistent batch quality — measurable gains for workshops that prioritise throughput and reproducible results.

Where and how this insert is best applied

This indexable insert is suited to turning and boring of stainless steels and nickel‑base or titanium‑based alloys where heat generation and work‑hardening are common challenges. Typical applications include component faces, shoulder cuts and interrupted cuts where a combination of edge strength and heat resistance is needed. The insert’s form and chipbreaker support medium to heavy machining parameters, but final speeds and feeds should be selected according to machine rigidity and workpiece characteristics; consult technical advisors for optimised cutting data.

For machining stainless and heat‑resistant alloys with a focus on stable edge life and reproducible results, request the Walter Tools TCMT090208‑FM4 WSM20S insert via Metav Werkzeuge or contact our technical team at info@metav-werkzeuge.com or +49 2822 7131930 for tailored cutting recommendations.

Technical data

• SKU: TCMT090208-FM4-WSM20S-WALTER
• Article designation: TCMT090208-FM4 WSM20S
• Series: Tiger·tec Silver
• Grade: WSM20S
• Manufacturer: Walter Tools

Facts

• Clearance angle: 7°
• Corner radius: 0.8 mm
• Plate form: Triangle 60°
• Plate size: 09
• Plate thickness: 02

Special features

• Coating: Tiger·tec Silver
• Chipbreaker: FM4
• Tolerance class: M
• Applicable material groups: S, M
• Suitable for stainless steels

FAQ

What materials is this insert designed for?
The TCMT090208‑FM4 WSM20S insert is designed primarily for stainless steels (ISO group M) and high‑temperature superalloys (ISO group S), offering thermal stability and edge strength for these materials.

How does the FM4 chipbreaker influence machining?
The FM4 chipbreaker promotes secure chip formation and evacuation, reducing the risk of built‑up edge and improving surface finish consistency when using the TCMT090208‑FM4 WSM20S insert.

Can this insert be used for both turning and boring?
Yes, the triangular 60° geometry and robust chip control make the insert suitable for both turning and light boring operations where material and cutting conditions match the grade’s strengths.

What are the key geometry values to consider for setup?
Important parameters are the 0.8 mm corner radius and the 7° clearance angle; these influence edge strength and contact conditions and should be considered when selecting feeds and depths of cut for the insert.

Is the coating beneficial for interrupted cuts?
The Tiger·tec Silver coating enhances thermal resistance and reduces friction, which can improve performance in interrupted and continuous cuts on demanding alloys when combined with appropriate cutting data.

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

Protected trademarks and trade names are the property of their respective owners. Brand names and registered trademarks are mentioned for explanation purposes only and indicate no affiliation between Metav Werkzeuge and the named brands. The offered article is an original, factory‑new product of the manufacturer.