VCMT160408-MM4 WSM20S MM4 Wendeplatten - Walter Tools

Take advantage of the combination of Tiger·tec Silver coating, a proven MM4 chipbreaker and a rhombic 35° geometry for stable cutting in demanding materials; order the insert directly via Metav Werkzeuge or request advice from the consultants for application-specific recommendations.

VCMT160408-MM4 WSM20S indexable turning insert — Tiger·tec Silver coating, rhombic 35° (Walter Tools)

The VCMT160408-MM4 WSM20S is a rhombic 35° indexable turning insert designed for robust chip control and reliable edge stability in stainless steels and heat‑resistant alloys.

• Tiger·tec Silver coated carbide for extended tool life
• Optimised MM4 chipbreaker for secure chip control
• Rhombic 35° geometry for versatile turning tasks
• 0.8 mm corner radius and 7° relief for stable cutting

Machining reliability for stainless steels and superalloys

The insert is engineered with a Tiger·tec Silver coating on coated carbide, providing improved thermal resistance and reduced flank wear when machining stainless steels and superalloys. The coating system and substrate combination promote stable edge formation, which reduces the tendency for built-up edge and supports repeatable performance under elevated cutting temperatures. In practical terms, this means fewer unexpected tool changes and a more predictable process window during medium to heavy turning operations, particularly where heat generation and workpiece toughness are critical factors.

Geometry and chip control that improve surface finish

A Rhombic 35° geometry combined with the MM4 chipbreaker delivers controlled chip formation and reduced cutting forces in interrupted and continuous cuts. The 0.8 mm corner radius and 7° free angle maintain a favourable balance between edge strength and cutting aggressiveness, which helps to preserve surface integrity while avoiding undue tool loading. For operations requiring consistent finishes, the geometry minimises vibration and supports smoother tool engagement, hence contributing directly to improved productivity and fewer rework cycles.

Productivity, economy and workshop advantages

The carbide grade WSM20S is specified for applications in group M (stainless steels) and group S (heat‑resistant alloys / titanium), offering a wide material coverage that reduces tool inventory complexity. The stable edge behaviour and wear resistance of the grade extend the useful life of the insert, lowering tooling costs per part and improving overall process efficiency. For busy shops, the combination of coating and optimised chip control translates into higher uptime and predictable component quality — advantages that are particularly relevant for batch production and mixed‑material workloads.

Practical notes on application and handling

The insert is supplied in the standard VCMT format with size designation 16 and thickness code 04; it is intended for conventional indexable turning holders that accept rhombic 35° inserts. The MM4 chipbreaker is suitable for a wide range of feeds and depths of cut; however, cutting parameters should be adapted to the specific workpiece alloy and machine rigidity. Where high surface quality is required, modest feed rates and stable clamping will exploit the geometry’s benefits most effectively. For special applications in titanium or heavily work‑hardened stainless grades, adjust cutting speeds downward to maintain edge life.

For reliable turning in stainless steels and heat‑resistant alloys, order the Walter Tools VCMT160408‑MM4 WSM20S via Metav Werkzeuge or contact Metav Werkzeuge for tailored application support at info@metav-werkzeuge.com or +49 2822 7131930

Technical data

• Article number: VCMT160408-MM4-WSM20S-WALTER
• Label: Drehwendeschneidplatte VCMT160408-MM4 WSM20S Walter Tools
• Series: Tiger·tec Silver
• Grade: WSM20S
• Brand: Walter Tools

Facts

• Insert size: 16
• Thickness designation: 04
• Corner radius: 0.8 mm
• Free angle: 7°
• Geometry: Rhombic 35°

Special features

• Coating: Tiger·tec Silver
• Substrate / material: coated carbide (S / M)
• Chipbreaker: MM4
• Tolerance class: M
• Suitable for: stainless steels (M) and heat‑resistant superalloys / titanium (S)
• Execution: T

FAQ

What materials is this insert best suited for?
The VCMT160408‑MM4 WSM20S insert is optimised for stainless steels (ISO group M) and for heat‑resistant superalloys and titanium (ISO group S), offering stable chip formation and enhanced edge life in these materials.

Which cutter holders are compatible with the insert?
The rhombic 35° format fits standard indexable turning holders designed for VCMT inserts; holders must accept the size 16 geometry and thickness code 04 to ensure correct seating and clamping.

How does the MM4 chipbreaker affect machining?
The MM4 chipbreaker promotes consistent chip segmentation and secure evacuation across a range of feeds, reducing the risk of entangling chips and helping to maintain surface finish and tool life during continuous and interrupted turning.

Can this insert be used for finishing and medium turning?
Yes. The combination of the 0.8 mm corner radius and the coating makes the insert suitable for finishing and medium turning operations, provided cutting parameters are matched to the workpiece material and machine rigidity.

Where to get advice on cutting data for this insert?
Metav Werkzeuge provides application support for Walter Tools inserts; contact Metav Werkzeuge for cutting recommendations and process optimisation based on the VCMT160408‑MM4 WSM20S data.

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

Die Walter AG (Markenauftritt: Walter Tools) mit Hauptsitz in Tübingen gehört zu den weltweit führenden Herstellern von Präzisionswerkzeugen für die Metallbearbeitung und ist Teil des schwedischen Sandvik-Konzerns. Geschützte Markenzeichen und Warenbezeichnungen liegen im Recht ihrer jeweiligen Eigentümer. Markennamen und geschützte Warenzeichen werden ausschließlich zu Erklärungszwecken genannt. Es besteht keinerlei Verbindung zwischen unserem Unternehmen und den genannten Marken. Es handelt sich bei dem angebotenen Artikel um originale fabrikneue Waren des Herstellers.