VBMT160408-MM4 WSM20S MM4 Wendeplatten - Walter Tools

Take advantage of the combination of Tiger·tec Silver coating and the MM4 chipbreaker for reliable chip control and extended tool life when machining stainless steels and heat‑resistant alloys; order directly via Metav Werkzeuge or consult our specialists for application guidance.

VBMT160408-MM4 WSM20S Turning insert — Tiger·tec Silver for stainless and heat‑resistant alloys | Walter Tools

The VBMT160408-MM4 WSM20S is a rhombic 35° turning insert with MM4 chipbreaker, engineered for machining stainless steels and heat‑resistant superalloys in demanding industrial applications

• Tiger·tec Silver coated carbide grade
• Rhombic 35° geometry with 0.8 mm corner radius
• MM4 chipbreaker for secure chip control
• Suitable for stainless and heat‑resistant alloys

Optimised for tough-to-machine alloys and stainless steels

The insert uses the WSM20S grade within the Tiger·tec Silver family, a coated carbide formulation developed to resist the thermal and mechanical stresses typical of stainless steels (M) and superalloys/titanium (S). The coating improves heat resistance and wear behaviour, which translates into more consistent cutting performance and longer intervals between tool changes. For production environments where stability and reproducibility matter, this combination reduces the risk of built‑up edge and supports a steady metal‑removal process.

Stable chip formation and surface quality through engineered chip control

Equipped with the MM4 chipbreaker, the insert provides controlled chip formation under the high cutting forces and poor thermal conductivity of the target materials. The breaker geometry promotes predictable chip flow and reduces the frequency of manual intervention, helping to maintain machine uptime and part quality. Process engineers will note that consistent chip control contributes directly to improved surface finish and minimised rework.

Geometry designed for versatility and secure seating

The rhombic 35° profile and 0.8 mm corner radius offer a balance between strength and accessibility for a range of turning operations, from semi‑roughing to light finishing. A 5° relief angle supports cutting engagement while protecting the cutting edge in interrupted or unstable cuts. The insert size is indicated as 16 with thickness 04 and tolerance class M, giving predictable fit and repeatability in standard toolholders. These geometric choices simplify tool selection across mixed production runs and reduce setup variability.

Productivity gains from a hardened coating and robust grade

The Tiger·tec Silver coating, combined with the WSM20S carbide matrix, enhances wear resistance and edge stability in elevated temperatures common when machining stainless and heat‑resistant alloys. The result is a longer effective tool life and the potential for higher cutting speeds or extended cycle lengths without compromising component integrity. For operations seeking process reliability and reduced tool consumption, this insert supports a more efficient machining strategy with fewer interruptions.

For a tailored application recommendation or to confirm compatibility with a specific toolholder, contact Metav Werkzeuge — our consultants can advise on cutting parameters and inventory availability for Walter Tools products

Technical data

• SKU: VBMT160408-MM4-WSM20S-WALTER
• Designation: VBMT160408-MM4 WSM20S
• Series: Tiger·tec Silver
• Grade: WSM20S
• Chipbreaker: MM4
• Manufacturer: Walter Tools

Numbers / Core technical data

• Corner radius: 0.8 mm
• Relief angle: 5°
• Insert size: 16
• Thickness: 04
• Geometry: Rhombic 35°
• Tolerance class: M

Materials & special features

• Coating: Tiger·tec Silver
• Suitable for: stainless steels (M)
• Suitable for: heat‑resistant superalloys and titanium (S)
• Application: turning operations requiring stable chip formation and thermal resistance
• Series characteristics: engineered for productive machining of difficult materials

FAQ

Which materials are recommended for this insert?
The VBMT160408-MM4 WSM20S is specified for stainless steels (ISO group M) and heat‑resistant superalloys/titanium (ISO group S); the WSM20S grade and Tiger·tec Silver coating are selected to handle the heat and edge stress these materials generate.

What is the purpose of the MM4 chipbreaker?
The MM4 chipbreaker promotes controlled chip formation and evacuation during cutting, which improves process stability and surface finish when using the VBMT160408-MM4 WSM20S turning insert from Walter Tools.

How do the geometry values affect machining?
The rhombic 35° form with a 0.8 mm corner radius and 5° relief angle gives a compromise between edge strength and accessibility, enabling both robust engagement and acceptable finishing capability in interrupted and continuous cuts.

Can this insert be used for finishing stainless steel components?
Yes — when paired with appropriate cutting parameters and a suitable toolholder, the combination of WSM20S grade and the insert geometry supports finishing operations on stainless steels while maintaining surface quality.

What benefits does the Tiger·tec Silver coating provide?
Tiger·tec Silver enhances thermal and wear resistance of the cutting edge, providing improved tool life, better edge stability and more consistent results in high‑temperature cutting conditions typical for stainless and heat‑resistant alloys.

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

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