VCMT160404-RM4 WSM20S RM4 Wendeplatten - Walter Tools

Take advantage of the insert’s combination of the Tiger·tec Silver coated grade WSM20S, the RM4 chipbreaker and a compact Rhombus 35° geometry to secure stable cutting, reliable chip control and long tool life in demanding stainless and heat‑resistant alloy applications; order directly via Metav Werkzeuge or request application advice from our consultants.

VCMT160404-RM4 WSM20S indexable turning insert — Rhombus 35°, 0.4 mm nose radius (Walter Tools)

VCMT160404-RM4 WSM20S indexable insert for turning applications, designed for machining stainless steels and heat‑resistant superalloys with emphasis on edge stability and repeatable performance

• Tiger·tec Silver coated carbide grade WSM20S
• RM4 chipbreaker for stable chip formation
• 7° clearance for secure cutting edge geometry
• Rhombus 35° with 0.4 mm nose radius

Consistent edge performance for difficult alloys

The VCMT160404-RM4 WSM20S insert is engineered for process reliability when machining tough-to-cut materials. The combination of a coated carbide Tiger·tec Silver grade and a purpose-designed geometry reduces the risk of built-up edge and promotes a predictable wear pattern. This results in fewer unplanned tool changes and steadier component tolerances, which supports higher machine utilisation and a more predictable production rhythm. The Rhombus 35° form and 7° clearance contribute to secure engagement and lower vibration on interrupted cuts, delivering measurable improvements in cycle stability.

Coating and grade deliver thermal resilience and edge life

The WSM20S coating technology is optimised for heat resistance and abrasion control, particularly in stainless steels and nickel‑base superalloys. The applied surface treatment enhances the substrate’s resistance to thermal softening and flank wear, meaning the cutting edge retains its integrity under elevated temperatures. As a result, the insert sustains cutting conditions that would otherwise accelerate flank wear, enabling longer tool life per index and improved economy across long production runs. The RM4 chipbreaker further supports controlled chip evacuation, reducing rework risk and improving surface finish consistency.

Geometry and chip control for reliable turning

The Rhombus 35° platform with a 0.4 mm nose radius provides a balance between edge strength and fine surface generation, making it suitable for both semi‑finishing and finishing passes in demanding material groups. The RM4 chipbreaker is tuned to produce short, manageable chips on stainless steels and heat‑resistant alloys, lowering the chance of chip entanglement and minimising secondary damage to the workpiece. Together, the grade, coating and geometry create a solution that reduces process variance and supports predictable machining outcomes, which is particularly valuable for batch production and high‑mix environments.

For tailored application advice, availability checks or to discuss cutting trials for Walter Tools inserts, contact Metav Werkzeuge—email info@metav-werkzeuge.com or call +49 2822 7131930 for fast, factory‑oriented support

Technical Data

• Article number: VCMT160404-RM4-WSM20S-WALTER
• Designation: VCMT160404-RM4 WSM20S
• Product type: Indexable turning insert
• Series: Tiger·tec Silver
• Grade: WSM20S

Facts

• Inscribed circle: 16 mm
• Thickness: 4 mm
• Nose radius: 0.4 mm
• Clearance angle: 7°
• Tolerance class: M

Special features

• Shape: Rhombus 35°
• Chipbreaker: RM4
• Coating: Tiger·tec Silver (coated carbide)
• Execution: T
• Suitable for: stainless steels (M), superalloys and titanium (S)

FAQ

What materials is this insert best suited for?
The VCMT160404-RM4 WSM20S insert is optimised for stainless steels and heat‑resistant superalloys (ISO groups M and S), where thermal resilience and stable chip control are required.

How does the RM4 chipbreaker affect machining?
The RM4 chipbreaker on this Walter Tools insert produces controlled, short chips that improve evacuation and reduce the risk of entanglement, helping to maintain surface quality.

Can this insert be used for finishing passes?
Yes, with its 0.4 mm nose radius and Rhombus 35° geometry the insert supports both semi‑finishing and finishing operations while keeping edge strength adequate for interrupted cuts.

What benefits does the Tiger·tec Silver coating provide?
The Tiger·tec Silver coating on the WSM20S grade enhances thermal and abrasive resistance, extending edge life and promoting consistent cutting performance in demanding alloys.

Which tool holders are compatible with this designation?
Standard tool holders accepting VCMT‑style inserts are compatible; confirm seat and clamping type with the intended holder to ensure correct fit for VCMT160404-RM4 WSM20S

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

Protected trademarks and trade names are the property of their respective owners and are mentioned for explanatory purposes only. There is no affiliation between our company and the mentioned brands. The offered item is an original, factory‑new product of the stated manufacturer.