CNMG120412-NMS WSM20S WSM20S Wendeplatten - Walter Tools

Take advantage of the combination of Tiger·tec Silver coating and the NMS chipbreaker for secure chip control and extended tool life when machining demanding materials; order directly via Metav Werkzeuge or consult our specialists for application-specific advice.

CNMG120412-NMS WSM20S indexable turning insert — Tiger·tec Silver, for rostfreier Stahl & superalloys (Walter Tools)

The CNMG120412-NMS WSM20S is a precision indexable turning insert designed for heavy-duty turning of rostfreier Stahl and heat-resistant superalloys, delivering reliable chip control and sustained cutting-edge stability.

• Tiger·tec Silver coated carbide grade WSM20S
• Optimised NMS chipbreaker for secure chip control
• Rhombic 80° form with 1.2 mm corner radius

Consistent chip control for challenging materials

The combination of the Tiger·tec Silver coating and the engineered NMS chipbreaker ensures stable chip formation when machining tough materials such as rostfreier Stahl and high-temperature alloys. The specialised coating increases thermal resistance and reduces adhesion at the cutting edge, which in turn helps maintain a consistent cutting performance under elevated temperatures. This results in fewer interruptions for chip clearing and a reduced risk of built-up edge, improving process reliability in continuous and interrupted turning operations.

Geometry that boosts edge strength and repeatability

The rhombic 80° insert form with a 1.2 mm corner radius and 0° (negative) relief provides a secure seat in rigid toolholders and a favourable cutting angle for robust metal removal. The combination of shape and radius improves edge strength and distributes cutting forces to reduce chipping. With a defined tolerance class of M and the specified plate thickness, the geometry supports reproducible insert indexing and repeatable part quality, particularly where stable radial engagement and low-vibration cutting are required.

Productivity and process security through material design

The WSM20S grade is tuned for high-temperature stability and abrasion resistance, offering improved tool life when turning heat-resistant superalloys and rostfreier Stahl. As part of the Tiger·tec Silver series, this insert is intended to deliver consistent results across batch production and single-part machining alike. Walter Tools’ focus on stable cutting edges and productivity makes this insert a suitable choice for shops aiming to increase machine uptime and reduce insert change frequency without sacrificing surface finish or dimensional control.

Contact Metav Werkzeuge for precise recommendations on tooling setups and to request application data tailored to individual machining conditions — Metav Werkzeuge can advise on cutting parameters and compatible holders.

Technical Data

• SKU: CNMG120412-NMS-WSM20S-WALTER
• Designation: CNMG120412-NMS WSM20S
• Product type: indexable turning insert
• Brand: Walter Tools

Facts

• Insert size: 12
• Corner radius: 1.2 mm
• Relief angle: 0° (negative)
• Thickness: 04
• Tolerance class: M

Special features

• Coating/grade: Tiger·tec Silver / WSM20S
• Chipbreaker: NMS
• Series: Tiger-tec Silver
• Material suitability: S / M (heat-resistant alloys, rostfreier Stahl)
• Shape: Rhombic 80°
• Execution: G

FAQ

Which materials are best suited for this insert?
The CNMG120412-NMS WSM20S insert is specified for machining rostfreier Stahl and heat-resistant superalloys (material groups S and M), with the WSM20S grade engineered to handle the thermal and mechanical demands of these materials.

What does the NMS chipbreaker provide in practice?
The NMS chipbreaker on this Walter Tools insert promotes predictable chip control and stable chip shapes, reducing the likelihood of entanglement and improving surface finish during continuous turning of difficult-to-machine alloys.

How does the Tiger·tec Silver coating benefit production?
Tiger·tec Silver increases thermal resistance and reduces adhesion, which extends cutting-edge life under higher cutting temperatures and supports longer uninterrupted production cycles with consistent part quality.

Is this insert suitable for interrupted cuts or roughing operations?
Yes, the rhombic 80° form with a 1.2 mm corner radius and negative relief is intended to provide edge strength and resist chipping, making it appropriate for robust cutting tasks including many interrupted-cut applications.

Can this insert be used in standard CNMG toolholders?
The CNMG120412-NMS WSM20S follows the CNMG designation and is compatible with standard CNMG toolholders; correct clamping and toolholder rigidity remain essential to achieve the expected performance.

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

Protected trademarks and trade names are the property of their respective owners. Brand names and protected designations are mentioned for explanatory purposes only. There is no connection between our company and the mentioned brands. The offered item is an original, factory-new product of Walter Tools.