WNMG080408-NMS WSM20S WSM20S Wendeplatten - Walter Tools

High-performance turning capability with Tiger·tec Silver and the optimised NMS chipbreaker ensures stable edges and secure chip formation for stainless steels and superalloys; order the WNMG080408-NMS WSM20S directly via Metav Werkzeuge or contact our consultants for tailored cutting data.

WNMG080408-NMS WSM20S – Indexable turning insert, Tiger·tec Silver coating, for stainless steels and superalloys | Walter Tools

WNMG080408-NMS WSM20S is an indexable turning insert designed for heavy-duty turning and secure chip control when machining heat-resistant alloys and rostfreier Stahl.

• Tiger·tec Silver coated for long tool life
• Optimised NMS chipbreaker for secure chips
• Trigon 80° form for versatile turning
• Suitable for stainless steel and superalloys

Consistent performance for demanding materials

The combination of the WSM20S grade and the Tiger·tec Silver coating delivers consistent wear resistance and improved thermal stability when machining high-alloy steels and heat-resistant materials. The coating technology is a multilayer system applied to a coated carbide substrate, which supports a stable cutting edge and reduces adhesion tendencies common with stainless steels and superalloys. In practice, this means fewer interruptions for edge changes and steadier dimensional results, particularly in continuous or semi-continuous production where predictable tool life is essential. The insert’s construction emphasises high process reliability and constant performance over extended runs.

Reliable chip control and geometry benefits

The NMS chipbreaker is engineered to produce short, manageable chips under the cutting conditions typical of tricky-to-machine materials. Combined with the Trigon 80° insert form and a 0.8 mm corner radius, the geometry balances strength and edge engagement for interrupted cuts and shoulder turning. The 0° negative relief angle increases edge robustness and supports heavy feed applications, while the modest corner radius helps maintain surface integrity without sacrificing tool life. For users less familiar with insert geometry: a negative relief angle shifts cutting forces into the insert body, improving resistance to mechanical shock and enhancing edge stability during heavy cuts.

Practical advantages that support shop productivity

Tolerance class M and the standardised ISO designation allow straightforward substitution in existing toolholders and machining programmes, reducing setup complexity. The grade’s focus on secure chip formation and a stable cutting edge translates into less scrap, fewer tool changes and higher uptime — a tangible economic benefit on batch runs and high-mix production. Where teams require application guidance, the insert’s specification supports clear selection: coated carbide grade for thermal and chemical resistance, NMS chipbreaker for controlled chip flow, and Trigon form for flexible turning tasks. Together, these attributes make the insert a pragmatic choice for shops aiming to improve throughput without compromising surface quality.

For precision turning in rostfreier Stahl and heat-resistant superalloys, request availability and cutting recommendations from Metav Werkzeuge — phone +49 2822 7131930 or eMail info@metav-werkzeuge.com, and our specialists will advise on toolholder compatibility and feed-speed guidance.

Technical Data

• SKU: WNMG080408-NMS-WSM20S-WALTER
• Label: Drehwendeschneidplatte WNMG080408-NMS WSM20S Walter Tools
• Manufacturer: Walter Tools

Facts

• Corner radius: 0.8 mm
• Relief angle: 0° (negative)
• Insert form: Trigon 80°
• Insert size: 08
• Thickness: 04
• Tolerance class: M

Special features

• Series: Tiger·tec Silver
• Grade: WSM20S (coated carbide)
• Chipbreaker: NMS
• Material groups: S / M (superalloys/titanium, stainless steels)
• Application: heavy-duty and high-temperature-resistant materials
• ISO designation: WNMG080408-NMS WSM20S

FAQ

What materials is this insert suited for?
The WNMG080408-NMS WSM20S from Walter Tools is designed for rostfreier Stahl (stainless steels) and heat-resistant superalloys, corresponding to ISO groups M and S.

How does the NMS chipbreaker affect machining?
The NMS chipbreaker on this insert promotes short, controllable chips and stable chip flow, which improves workplace safety and reduces secondary operations related to chip management.

Is the Trigon 80° form suitable for shoulder turning?
Yes, the Trigon 80° geometry provides strength at the cutting edge and versatility for a range of turning operations, including shoulder work and external profiling when using the appropriate toolholder.

What benefit does the 0.8 mm corner radius provide?
A 0.8 mm corner radius offers a compromise between edge strength and surface finish: it increases resistance to edge chipping while helping to maintain acceptable surface quality on interrupted and continuous cuts.

How is the Tiger·tec Silver series reflected in tool life?
The Tiger·tec Silver coating applied to the WSM20S grade enhances thermal stability and wear resistance, contributing to longer periods between insert changes and more consistent process results.

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

Walter AG (brand: Walter Tools) with headquarters in Tübingen is among the world's leading manufacturers of precision tools for metalworking and is part of the Sandvik Group. Protected trademarks and trade names belong to their respective owners. Brand names and trademarks are mentioned for explanation only. There is no connection between our company and the named brands. The offered article is original factory-new goods of the manufacturer.