VBMT160412-MM4 WSM20S MM4 Wendeplatten - Walter Tools

Take advantage of the combination of Tiger·tec Silver wear resistance, the MM4 chipbreaker for secure chip control and a compact 35° rhombic geometry to keep cycle times short and tool changes infrequent — order the insert via Metav Werkzeuge or request application advice from our consultants.

VBMT160412-MM4 WSM20S turning insert — Tiger·tec Silver grade by Walter Tools (for stainless steel and heat-resistant superalloys)

The VBMT160412-MM4 WSM20S is a 35° rhombic indexable insert designed for demanding external turning of stainless steels and heat-resistant alloys, offering robust edge stability and predictable chip formation.

• Tiger·tec Silver coated, wear-resistant grade WSM20S
• Optimised MM4 chipbreaker for stable chip control
• Rhombic 35° shape with 1.2 mm corner radius
• Suited to stainless steel and heat-resistant alloys

Longer tool life through heat-resistant coating and stable grade

The combination of the Tiger·tec Silver coating and a coated carbide substrate gives a tangible benefit: extended tool life under thermally aggressive conditions. The coated hardmetal grade WSM20S is formulated for reduced flank wear when machining materials that generate heat and tend to form built-up edge; this translates into fewer interruptions for tool changes and improved component consistency. In practical terms, shops processing exotic alloys or workpieces with interrupted cuts will see higher process security and a more economical cutting cycle thanks to the improved wear resistance and edge robustness.

Reliable chip control for safer, more productive turning

Chip management is decisive when machining stainless steels and superalloys; the MM4 chipbreaker geometry is optimised for moderate to heavy depths of cut and supports predictable chip segmentation. Stable chips reduce the risk of entanglement and improve surface finish consistency, which is particularly important when parts require minimal post-process handling. Describing chip technology in plain terms: the chipbreaker shapes the flow of metal into controllable fragments, lowering the chance of long, stringy chips and making automatic or manual chip evacuation simpler — a real efficiency gain on the shop floor.

Geometry engineered for accessibility and finish

The rhombic 35° form factor with a 1.2 mm corner radius balances accessibility and edge strength. The acute approach angle helps with profile turning and light finishing passes while the corner radius provides strength where it is needed for interrupted cuts and modest feed rates. The plate thickness (designation 04) and the VBMT 160412 format ensure compatibility with a wide range of standard toolholders, enabling flexible deployment across turning centres. This geometry assists in achieving consistent surface integrity while maintaining rigidity at the cutting zone.

Practical compatibility and application guidance

Tolerance class M and the designation suitable for material groups S / M indicate the insert is matched to both heat-resistant superalloys/titanium and stainless steels; in ISO terms, M covers stainless steels and S denotes superalloys. The insert is supplied in the Tiger·tec Silver series and is intended for operations where reliable edge retention and repeatable component quality are priorities. If there is any uncertainty about machine settings, cutting speeds or holder choice for a specific application, Metav Werkzeuge provides technical advice and can recommend cutting parameters to achieve the best combination of tool life and productivity.

For high-process-security turning with Walter Tools' Tiger·tec Silver grade, contact Metav Werkzeuge for ordering and application advice at info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: VBMT160412-MM4-WSM20S-WALTER
• Label: Drehwendeschneidplatte VBMT160412-MM4 WSM20S Walter Tools
• Manufacturer: Walter Tools

Core figures

• Size: 16 mm
• Plate thickness: 04
• Corner radius: 1.2 mm
• Free angle: 5°
• Shape: Rhombus 35°
• Tolerance class: M

Design and features

• Grade: WSM20S
• Series / coating: Tiger·tec Silver
• Chipbreaker: MM4
• Material suitability: S / M
• Execution: T
• Product type: Turning indexable insert

FAQ

What materials is this insert designed for?
The VBMT160412-MM4 WSM20S turning insert is designed for stainless steels (M) and heat‑resistant superalloys/titanium (S), using the Tiger·tec Silver grade for improved edge stability.

How does the MM4 chipbreaker affect performance?
The MM4 chipbreaker promotes controlled chip segmentation and stable chip flow, improving surface finish consistency and reducing the risk of long, stringy chips during turning operations.

Which geometry advantages does the rhombic 35° shape provide?
The rhombic 35° approach offers good access for profile turning and finishing while the 1.2 mm corner radius increases edge strength for interrupted cuts, supporting both accuracy and durability.

Is the insert compatible with standard toolholders?
The VBMT 160412 format and 04 thickness match common turning toolholders, enabling straightforward integration into most tooling systems used for external turning.

What distinguishes Tiger·tec Silver from other coatings?
Tiger·tec Silver is a high-performance coating technology that enhances wear resistance and heat tolerance, delivering longer tool life and better performance when machining thermally challenging materials.

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 only. There is no affiliation between our company and the named brands. The offered item is an original, factory-new product of the manufacturer.