CNMG120408-RM5 WSM20S RM5 Wendeplatten - Walter Tools

Take advantage of the combination of a robust negative-rake geometry, the WSM20S Tiger‑tec Silver grade and the RM5 chipbreaker for stable chip control and extended edge life; order directly via Metav Werkzeuge or consult the team for application-specific advice.

CNMG120408-RM5 WSM20S Drehwendeschneidplatte — Rhombus 80° insert for rostfreier Stahl and superalloys by Walter Tools

The CNMG120408-RM5 WSM20S is an indexable turning insert designed for demanding machining of rostfreier Stahl and heat-resistant alloys, offering a combination of wear-resistant coating and robust geometry.

• CNMG rhombic 80° geometry
• Tiger‑tec Silver WSM20S grade
• RM5 chipbreaker for stable chip control
• Suitable for rostfreier Stahl and superalloys

Enhanced process stability for challenging materials

The combination of the WSM20S grade and the Tiger‑tec Silver coating delivers improved thermal resistance and stable cutting edges when machining tough-to-cut materials. This grade is tailored for applications in ISO material groups M (rostfreier Stahl) and S (heat-resistant superalloys and titanium), where workpiece toughness and poor thermal conductivity demand a wear-resistant solution. By promoting reliable chip formation and resisting edge breakdown, the insert reduces the risk of unexpected tool changes and helps maintain consistent cycle times. The result is a more predictable production flow and fewer interruptions on the shop floor.

Geometry and chip control that protect the cutting edge

The rhombic 80° form, combined with a 0° (negative) free angle and a 0.8 mm corner radius, provides a balance between edge strength and surface finish. The RM5 chipbreaker encourages short, controllable chips under a wide range of cutting conditions, which reduces the likelihood of chip entanglement and improves tool life. Negative-rake geometry increases resistance to mechanical and thermal shock, making the insert particularly suitable for interrupted cuts or heavy roughing passes. These design choices translate into fewer reworks and reliable dimensional consistency in turning operations.

Clear application guidance and productivity benefits

This insert is part of the Tiger‑tec Silver series and is specified in the designation CNMG120408‑RM5 WSM20S. It is optimised for turning operations on workpieces classed as M and S according to ISO 513. In practice, that means efficient performance on rostfreier Stahl and heat‑resistant superalloys, with good control of built-up edge and elevated temperatures. For workshops aiming to increase throughput while safeguarding surface integrity, the robust grade and chip control offer tangible benefits: extended edge life, reproducible component quality and reduced downtime from insert failure. If further cutting data or application-specific recommendations are required, technical advice is available.

For machining rostfreier Stahl and superalloys with high process reliability, contact Metav Werkzeuge for tailored application support and availability at info@metav-werkzeuge.com or +49 2822 7131930

Technical Data

• Article number: CNMG120408-RM5-WSM20S-WALTER
• Designation: CNMG120408-RM5 WSM20S
• Product type: Drehwendeschneidplatte
• Manufacturer: Walter Tools

Facts

• Corner radius: 0.8 mm
• Plate size: 12
• Thickness code: 04
• Free angle: 0° (negative)
• Insert shape: Rhombus 80°
• Tolerance class: M

Special features

• Grade: WSM20S (Tiger‑tec Silver coating)
• Chipbreaker: RM5
• Material groups: S / M
• Suitability: rostfreier Stahl; heat-resistant superalloys and titanium
• Series: Tiger‑tec Silver

FAQ

What materials are best machined with this insert?
The CNMG120408-RM5 WSM20S insert is designed for ISO groups M and S—primarily rostfreier Stahl and heat-resistant superalloys—offering thermal stability and controlled chip formation for these materials.

What does the WSM20S grade indicate?
WSM20S identifies a Walter Tools coated carbide grade within the Tiger‑tec Silver family, optimised for wear resistance and edge stability in demanding turning applications.

How does the RM5 chipbreaker benefit machining?
The RM5 chipbreaker promotes short, manageable chips and supports consistent chip flow, which reduces chip-related interruptions and protects the cutting edge during turning.

Is the negative 0° free angle suitable for heavy cuts?
Yes, the 0° (negative) free angle increases edge robustness and resistance to mechanical shock, making the insert appropriate for heavier cuts and interrupted work.

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

Walter Tools: The Walter AG (brand: Walter Tools) with headquarters in Tübingen is one of the world’s leading manufacturers of precision tools for metalworking and is part of the Sandvik group. Protected trademarks and trade names are the property of their respective owners. The offered article is an original, factory-new product from the manufacturer.