CNMG120408-NRT WSM20S WSM20S Wendeplatten - Walter Tools

Take advantage of the high-performance combination of the Tiger·tec Silver coating and the WSM20S carbide grade for secure chip control and extended tool life; order directly via Metav Werkzeuge or consult the technical team for application guidance.

CNMG120408-NRT WSM20S indexable turning insert — Tiger·tec Silver, NRT chipbreaker (Walter Tools)

The CNMG120408-NRT WSM20S is an indexable turning insert designed for medium to heavy-duty turning of challenging materials, offering a coated-carbide grade optimised for machining stainless steels and heat-resistant alloys.

• Tiger·tec Silver coated grade WSM20S
• Optimised for stainless steels and superalloys
• Rhombic 80° geometry with 0.8 mm corner radius
• NRT chipbreaker for secure chip control

Consistent performance on stainless steels and superalloys

The coated-carbide grade WSM20S from the Tiger·tec Silver family is engineered to manage the thermal and mechanical demands of stainless steels and superalloys. Its composition supports a stable cutting edge under the high adhesion and heat conditions typical for these materials, reducing the tendency for built-up edge and improving process reliability. This results in fewer interruptions for edge dressing and a more predictable machining cycle in serial production.

Coating and material benefits for longer tool life

The Tiger·tec Silver coating combines wear resistance with thermal stability to protect the substrate during prolonged contact with hot workpieces. In practical terms, the coating reduces flank wear and chipping while maintaining cutting-edge integrity, which translates into measurable gains in tool life and component consistency. For facilities aiming to increase uptime and reduce tooling consumption, the coated grade offers a clear economic and operational advantage.

Geometry and chip control for stable turning operations

The insert's rhombic 80° shape and 0.8 mm corner radius provide a balance of strength and versatility: the geometry supports robust turning passes while allowing access to a range of shoulder and profile operations. The integrated NRT chipbreaker is optimised to form controllable chip shapes when machining ductile, work-hardening materials, thereby improving surface finish and minimising the risk of entanglement or tool damage. The negative 0° rake supports stable cutting forces for heavy cuts and interrupted cuts.

Practical integration into production workflows

With standard CNMG dimensions and a compact clamping interface, the insert fits common toolholders for indexable turning, enabling quick insert changes and repeatable set-ups. The combination of a coated grade, engineered chip control and robust geometry helps to lower process variability and supports higher feed and depth-of-cut strategies where appropriate. For quality-sensitive runs, the insert’s design contributes to consistent component tolerances and reliable surface integrity.

For application-specific recommendations on selecting the Walter Tools CNMG120408-NRT WSM20S for machining stainless steels or superalloys, contact Metav Werkzeuge by e‑mail at info@metav-werkzeuge.com or by phone at +49 2822 7131930 to discuss cutting data and toolholder options

Technical data

• Article number: CNMG120408-NRT-WSM20S-WALTER
• Designation: CNMG120408-NRT
• Series: Tiger·tec Silver
• Grade: WSM20S

Core data

• Plate size: 12
• Thickness: 04
• Corner radius: 0.8 mm
• Free angle / rake: 0° (negative)
• Geometry: Rhombus 80°
• Tolerance class: M

Special features

• Coating: Tiger·tec Silver
• Chipbreaker: NRT
• Material suitability: S / M
• Primary applications: stainless steels (M), heat-resistant superalloys and titanium (S)
• Type: Coated carbide indexable turning insert

FAQ

What materials is this insert best suited for?
The CNMG120408-NRT WSM20S is specified for stainless steels (ISO group M) and heat-resistant superalloys/titanium (ISO group S), where the Tiger·tec Silver coating and WSM20S grade support secure chip formation and edge stability.

How does the NRT chipbreaker influence machining?
The NRT chipbreaker on this insert produces predictable, short chips when machining ductile and work-hardening materials, improving surface finish and reducing the chance of chip-related incidents in turning operations.

What are the key geometry benefits for production use?
The rhombic 80° shape combined with a 0.8 mm corner radius and negative 0° rake gives a robust cutting edge for heavier passes and good access for shoulder machining, supporting consistent process parameters in series production.

Can this insert be used for interrupted cuts or heavy roughing?
Yes; the negative rake and sturdy corner radius make the insert suitable for interrupted cuts and heavier roughing operations where stability and edge robustness are required.

Is the CNMG120408-NRT WSM20S compatible with standard CNMG toolholders?
The insert follows standard CNMG dimensions and is compatible with conventional indexable turning toolholders designed for this insert shape and size.

Manufacturer: Walter Deutschland GmbH; Derendinger Straße 53; 72072 Tübingen; Germany; (Walter Tools is a brand of Walter AG / part of the Sandvik Group). Protected trademarks and trade names are the property of their respective owners. Mark names and trademarks are used solely for explanation; there is no commercial affiliation implied.