DNMG150408-NMT WSM20S WSM20S Wendeplatten - Walter Tools

Take advantage of the WSM20S grade and Tiger·tec Silver coating for secure chip control and extended edge life in tough materials; the combination of a rhombic 55° geometry with 0.8 mm corner radius ensures stable cutting in stainless steels and superalloys. Order the insert directly via Metav Werkzeuge or consult the technical team for process optimisation.

DNMG150408-NMT WSM20S indexable turning insert — Tiger·tec Silver for stainless steels | Walter Tools

A DNMG150408-NMT WSM20S indexable turning insert engineered for demanding turning of stainless steels and heat‑resistant superalloys, providing consistent chip control and robust edge stability.

• Tiger·tec Silver coated grade WSM20S
• Specifically for stainless steels and superalloys
• Rhombic 55° geometry with 0.8 mm corner radius
• Negative 0° rake, stable edge performance

High reliability for challenging materials

The DNMG150408-NMT WSM20S insert combines a resilient grade with a performance coating to deliver stable chip formation and reduced flank wear when machining stainless steels and heat‑resistant alloys. The design targets applications where material toughness and heat generation compromise tool life; by favouring edge robustness and consistent chip flow, the insert supports uninterrupted production and predictable tool change intervals. This results in better process planning and less scrap from built‑up edge or irregular cutting.

Coating and grade that extend edge life

The Tiger·tec Silver coating together with the WSM20S cemented carbide formulation enhances thermal resistance and wear behaviour, which is particularly relevant for materials that tend to work‑harden or generate high temperatures. The coating reduces friction at the cutting zone and improves resistance to abrasive and adhesive wear, translating into longer effective cutting life and fewer in‑cycle adjustments. For operations where repeatability matters, the improved wear resistance helps maintain dimensional accuracy over multiple components.

Geometry and chip control for process security

The rhombic 55° form, combined with the NMT chipbreaker and 0.8 mm corner radius, offers a balance between strength and cutting engagement. The negative 0° rake increases edge strength for interrupted cuts and heavy cross‑sections, while the chipbreaker promotes reliable evacuation of chips even under variable feed conditions. Together these elements lower the likelihood of chatter and edge failure, improving surface finish stability and reducing unscheduled downtime in serial turning operations.

Application guidance and operational benefits

Designed for turning operations where material grades fall into ISO groups M and S, this insert is suited for workpieces that demand thermal stability and controlled chip behaviour. The tolerance class M indicates consistent manufacturing precision, supporting reproducible part quality. For production managers and tool planners, the key benefits are improved process security and extended indexable insert intervals, which contribute to higher overall equipment effectiveness and reduced tooling overhead. For specific machining parameters and to match insert geometry with holder selection, technical consultation is available to tailor the solution to the machining centre and workpiece material.

Discuss Tiger·tec Silver inserts with Metav Werkzeuge for tailored machining recommendations and order support — contact Metav Werkzeuge at info@metav-werkzeuge.com or +49 2822 7131930

Technical Data

• Article number: DNMG150408-NMT-WSM20S-WALTER
• Designation: DNMG150408-NMT WSM20S
• Manufacturer: Walter Tools
• Series: Tiger·tec Silver

Key dimensions

• Size code: 15
• Corner radius: 0.8 mm
• Thickness code: 04
• Clearance angle: 0° (negative)
• Tolerance class: M

Features

• Grade: WSM20S
• Coating: Tiger·tec Silver
• Chipbreaker: NMT
• Geometry: Rhombus 55°
• Material suitability: Stainless steels (ISO group M), Superalloys / heat‑resistant alloys (ISO group S)

FAQ

What materials is this insert best suited for?
The DNMG150408-NMT WSM20S insert is optimised for stainless steels (ISO group M) and heat‑resistant superalloys (ISO group S), offering chip control and edge stability for these challenging materials.

How does the Tiger·tec Silver coating affect performance?
The Tiger·tec Silver coating improves thermal resistance and wear behaviour on the WSM20S grade, which helps extend cutting edge life and maintain surface quality during prolonged turning cycles.

What is the purpose of the NMT chipbreaker?
The NMT chipbreaker promotes controlled chip formation and evacuation, reducing the risk of entanglement and supporting consistent machining performance with the rhombic geometry.

Which geometry and corner radius are provided and why do they matter?
The insert has a rhombic 55° geometry with a 0.8 mm corner radius; this combination offers a compromise between edge strength and cutting engagement, suitable for stable turning in tough materials.

Is this insert suitable for interrupted cuts or heavy cross‑sections?
Yes, the negative 0° rake and robust grade of the WSM20S insert are designed to withstand interrupted cuts and heavier engagements, improving resistance to edge chipping.

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

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