CNMG190616-NRT WSM20S WSM20S Wendeplatten - Walter Tools

Take advantage of the combination of Tiger‑tec Silver coating, the WSM20S grade and the rhombic 80° geometry to achieve stable chip formation and extended edge life in the machining of stainless steel and heat‑resistant alloys; order the insert directly via Metav Werkzeuge or consult the team for application‑specific recommendations.

CNMG190616-NRT WSM20S – indexable turning insert, Tiger‑tec Silver, Walter Tools

The CNMG190616-NRT WSM20S is a rhombic 80° indexable turning insert designed for demanding turning of stainless steel and high‑temperature alloys, combining a coated carbide grade with an NRT chipbreaker for secure chip control.

• Tiger‑tec Silver coating for heat resistance
• Suited for stainless steel and superalloys
• Rhombic 80° geometry for flexible turning
• 1.6 mm corner radius for robust edge

High performance grade for demanding materials

The WSM20S grade in the Tiger‑tec Silver series is a coated carbide developed to meet the challenges of machining stainless steel and heat‑resistant superalloys. Its coating improves thermal stability and reduces adhesion at the cutting edge, which supports stable chip formation and extends tool life under elevated cutting temperatures. For production environments where consistency and fewer tool changes are priorities, this combination translates into measurable productivity gains and more predictable component quality.

Geometry and edge design that improve process reliability

The rhombic 80° shape with a 1.6 mm corner radius and a negative 0° clearance provides a balance between strength and versatility: the geometry supports robust roughing while delivering acceptable surface integrity in finishing passes when paired with the correct cutting parameters. The integrated NRT chipbreaker is tailored to control chip flow for the targeted material groups, reducing the risk of long, stringy chips and improving operator safety. The tolerance class M indicates manufacturing precision that helps ensure repeatable seating in toolholders.

Practical integration and expected application benefits

As an indexable turning insert, this item fits common CNMG toolholder families and is intended for operations where thermal loads and material ductility demand a wear‑resistant grade. The insert is particularly suited for workpieces specified under ISO 513 for groups M (stainless steel) and S (superalloys, titanium) and supports machining strategies that prioritise process security and steady surface quality. Choosing this insert can reduce downtime, limit rework and improve overall process economics when matched with suitable cutting data and rigid tooling setups.

Contact Metav Werkzeuge for tailored machining recommendations and availability of Walter Tools Tiger‑tec Silver inserts such as the CNMG190616‑NRT WSM20S — the consultants provide application‑specific support and supply guidance for efficient implementation.

Technical data

• SKU: CNMG190616-NRT-WSM20S-WALTER
• Designation: CNMG190616-NRT WSM20S
• Product type: Turning insert (Drehwendeschneidplatte)
• Manufacturer: Walter Tools
• Series: Tiger‑tec Silver
• Chipbreaker: NRT
• Tolerance class: M

Facts

• Plate size: 19
• Plate thickness: 06
• Corner radius: 1.6 mm
• Clearance angle: 0° (negative)
• Shape: Rhombus 80°
• Plattengröße designation: CNMG190616

Special features

• Coated carbide grade WSM20S
• Optimised for stainless steel and superalloys (ISO 513 groups M and S)
• Tiger‑tec Silver coating technology
• NRT chipbreaker for controlled chip removal
• Negative rake / robust cutting edge

FAQ

Which materials is this insert suitable for?
The CNMG190616‑NRT WSM20S insert from Walter Tools is engineered for stainless steel and for heat‑resistant superalloys and titanium (ISO 513 groups M and S), offering coating and grade properties that resist adhesion and thermal load.

What is the corner radius and how does it affect machining?
This insert features a 1.6 mm corner radius; a larger radius increases edge strength for roughing and supports longer tool life, while influencing the achievable surface finish and cutting forces.

How does the Tiger‑tec Silver coating benefit production?
Tiger‑tec Silver coating enhances thermal resistance and reduces edge wear and built‑up edge formation, which improves process stability and extends the interval between indexings or insert changes.

What role does the NRT chipbreaker play?
The NRT chipbreaker is designed to produce short, controllable chips when machining ductile materials such as stainless steel, improving evacuation and reducing the likelihood of chip entanglement.

Is the geometry suitable for heavy roughing or finishing passes?
The rhombic 80° form with negative 0° clearance and a 1.6 mm corner radius is optimised for robust roughing and medium finishing; final surface quality depends on toolholder rigidity and selected cutting parameters.

Manufacturer: Walter Tools (Walter AG), Tübingen, Germany

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