CNMG120408-NMS WSM20S WSM20S Wendeplatten - Walter Tools

Take advantage of the combination of Tiger·tec Silver coating and a robust rhombic geometry to achieve stable cutting edges and reliable chip control when machining stainless steel and high-temperature alloys; order directly via Metav Werkzeuge or request tailored application data from our consultants.

CNMG120408-NMS WSM20S Drehwendeschneidplatte — Tiger·tec Silver, negative 0° rake, Walter Tools

CNMG120408-NMS WSM20S is an indexable turning insert designed for heavy-duty and demanding turning of stainless steel and heat-resistant alloys, delivering consistent edge stability and process reliability

• Tiger·tec Silver coating for high thermal resistance
• Stable cutting edge with 0.8 mm corner radius
• Optimised NMS chipbreaker for secure chip control
• Rhombic 80° form for versatile turning applications

Improved process stability for difficult-to-machine alloys

The patented Tiger·tec Silver coating combined with the WSM20S grade gives a decisive advantage when machining stainless steel and superalloys: improved heat resistance reduces thermal damage at the cutting edge and supports continuous, predictable material removal. Coated carbide means a hard, wear-resistant surface layer that protects the substrate while keeping the cutting edge intact for longer tool life. This results in fewer tool changes and steadier cycles in production environments where repeatability matters.

Geometry that combines strength and precision

A rhombic 80° insert form with a 0.8 mm corner radius and 0° (negative) relief angle produces a mechanically robust cutting edge that resists chipping under interrupted cuts and heavy engagement. The CNMG shape offers multiple cutting corners for economic use and straightforward toolholder compatibility. The NMS chipbreaker is engineered to manage continuous, stringy chips typical of stainless steel, promoting safe evacuation and reduced re-cutting, which benefits surface finish and cycle consistency.

Application benefits and productivity gains

In practice, the combination of coated carbide, sturdy geometry and a dedicated chipbreaker means improved process security and fewer unexpected interruptions. The insert is suitable for both roughing where edge stability matters and for semi-finish operations with tighter dimensional demands. For job shops and series producers working with high-alloy steels or titanium, the result is higher productivity per shift and more consistent part quality — a direct contribution to operational efficiency and cost control.

Contact Metav Werkzeuge for application-specific cutting data, batch availability and recommended cutting parameters for Walter Tools CNMG120408-NMS WSM20S; our technical advisors provide tailored guidance and fast handling.

Technical data

• Article number: CNMG120408-NMS-WSM20S-WALTER
• Designation: CNMG120408-NMS WSM20S
• Product type: Drehwendeschneidplatte
• Series: Tiger-tec Silver
• Grade: WSM20S

Facts

• Insert shape: Rhombus 80°
• Size: 12
• Corner radius: 0.8 mm
• Relief angle: 0° (negative)
• Thickness: 04

Special features

• Coating: Tiger·tec Silver
• Chipbreaker: NMS
• Material: S / M
• Suitable for: stainless steel, superalloys and titanium
• Tolerance class: M

FAQ

What materials is this insert intended for?
The CNMG120408-NMS WSM20S is specified for stainless steel (material group M) and high-temperature alloys/titanium (group S) thanks to its Tiger·tec Silver coating and WSM20S grade.

How does the NMS chipbreaker affect machining?
The NMS chipbreaker on this turning insert controls chip shape and evacuation during machining of ductile, heat-generating materials, improving surface quality and reducing re-cutting.

Is the CNMG120408-NMS compatible with standard CNMG toolholders?
Yes, the rhombic 80° CNMG form matches standard CNMG toolholders; the insert offers multiple cutting corners for cost-effective indexing.

What advantages does the 0° negative relief offer?
A 0° negative relief increases clearance and strengthens the cutting edge, which improves resistance to chipping during heavy cutting and interrupted cuts.

How does the Tiger·tec Silver coating improve tool life?
Tiger·tec Silver provides a heat-resistant, wear-resistant surface that reduces adhesion and thermal degradation of the cutting edge when machining demanding alloys, extending productive tool life.

Hersteller: Walter Tools; Walter Deutschland GmbH, Derendinger Straße 53, 72072 Tübingen, Germany

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