TCMT090204-MM4 WSM20S MM4 Wendeplatten - Walter Tools

Take advantage of the combination of Tiger·tec Silver coating and the MM4 chipbreaker for secure chip control and extended tool life when machining stainless steel and heat‑resistant superalloys; order the insert directly via Metav Werkzeuge or request cutting data from the consultants for immediate integration into production.

TCMT090204-MM4 WSM20S triangular turning insert, Tiger·tec Silver – for stainless steel and superalloys | Walter Tools

The TCMT090204-MM4 WSM20S is a triangular 60° indexable insert engineered for stable, high‑temperature performance in turning and boring applications on stainless steel and heat‑resistant alloys.

• Tiger·tec Silver coating for heat resistance
• Suitable for stainless steel and superalloys
• Triangular 60° form with 0.4 mm corner radius
• MM4 chipbreaker for reliable chip control

High thermal stability for demanding materials

The Tiger·tec Silver coating, combined with the MM4 chipbreaker, was developed to sustain cutting edge integrity under thermal and mechanical stress. This combination enables predictable wear behaviour and reduces the risk of built‑up edge when machining stainless steel and high‑temperature superalloys. The result is a repeatable process window with fewer unscheduled tool changes and a demonstrable improvement in productive cutting time. The chemistry and microstructure of the coating are optimised for temperature resistance and adhesion to the substrate, which supports a longer effective tool life under elevated cutting temperatures.

Geometry tuned for stability and surface quality

With its triangular 60° form, the insert provides three usable cutting edges and a compact cutting edge engagement suited to a wide range of turning tasks. The 0.4 mm corner radius balances edge strength and surface finish: it increases robustness in interrupted cuts while still permitting acceptable roughness values. The 7° clearance reduces friction behind the cutting edge, promoting consistent chip flow and reduced secondary deformation. These geometric characteristics make the insert a reliable choice where dimensional stability and surface integrity are required on challenging workpiece materials.

Efficiency gains and longer service intervals

The carbide grade and coating system are optimised for a balance between wear resistance and toughness, which translates into economic operation through extended tool life and reduced tooling costs per part. Reliable chip control from the MM4 geometry shortens cycle times by preventing chip entanglement and minimising machine stoppages for clearing. For production environments this means higher machine utilisation and improved process capability, particularly when serial runs involve stainless steel or heat‑resistant alloys that are prone to work hardening and thermal loading.

Practical application guidance for process integration

The insert is supplied in the standard TCMT090204‑MM4 configuration with size code 09 and thickness code 02, suited for conventional clamping in compatible toolholders. It is typically recommended for medium to heavy interrupted turning and finishing where the balance between edge life and surface requirement is critical. For initial process setup, start with conservative feed and speed values appropriate for the workpiece alloy group, then adapt parameters according to tool wear and component tolerance. Technical data sheets and recommended cutting parameters can be provided to support commissioning and tool‑path optimisation.

Contact Metav Werkzeuge for tailored cutting data and reliable supply of Walter Tools TCMT090204-MM4 WSM20S inserts with Tiger·tec Silver and MM4 chipbreaker — email info@metav-werkzeuge.com or call +49 2822 7131930 to arrange specification support

Technical Data

• Article number: TCMT090204-MM4-WSM20S-WALTER
• SKU: TCMT090204-MM4-WSM20S-WALTER
• Product type: Bohr-/Aufbohrwendeschneidplatte / Drehwendeschneidplatte
• Manufacturer: Walter Tools
• Series: Tiger-tec Silver
• Grade/Sorte: WSM20S
• Designation: TCMT090204-MM4

Facts

• Form: Dreieck 60°
• Size: 09
• Thickness: 02
• Clearance angle: 7°
• Corner radius: 0.4 mm
• Chipbreaker: MM4

Special features

• Coating: Tiger·tec Silver
• Carbide substrate: coated cemented carbide
• Application: Turning and boring of stainless steel and superalloys
• Tolerance class: M
• Execution: T

FAQ

What materials is this insert suitable for?
The TCMT090204‑MM4 WSM20S insert is intended for machining stainless steel and heat‑resistant superalloys (ISO groups M and S), where the Tiger·tec Silver coating supports thermal stability.

How does the MM4 chipbreaker influence machining?
The MM4 chipbreaker on this Walter Tools insert is designed to produce predictable chips and reduce entanglement; this supports continuous cutting on stainless steel and improves process safety.

What does the 0.4 mm corner radius mean for edge strength?
A 0.4 mm corner radius increases resistance to edge chipping in interrupted cuts while maintaining a balance with surface finish; it is suitable for medium‑duty turning operations.

Is the insert compatible with common TCMT toolholders?
The insert follows the TCMT090204‑MM4 designation and fits standard toolholders designed for TCMT geometry; check holder seat type and clamping compatibility before mounting.

Where can cutting parameters for this insert be obtained?
Walter Tools and Metav Werkzeuge provide recommended cutting data for the TCMT090204‑MM4 WSM20S based on workpiece alloy and operation type; consult the technical datasheet for initial settings.

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

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