WNMG080412-MM5 WSM20S WSM20S Wendeplatten - Walter Tools

High thermal resistance and a Tiger·tec Silver coated grade deliver consistent wear behaviour and long tool life; the Trigon 80° geometry with a 1.2 mm corner radius provides robust edge strength for demanding cuts, and the MM5 chipbreaker ensures reliable chip control in stainless and heat-resistant alloys. Order the WNMG080412-MM5 WSM20S directly via Metav Werkzeuge or ask our consultants if needed.

WNMG080412-MM5 WSM20S – Indexable turning insert, Trigon 80°, 0° negative rake (Walter Tools)

WNMG080412-MM5 WSM20S is an indexable turning insert designed for heavy-duty machining of stainless steels and heat-resistant superalloys, combining a coated carbide grade with a robust geometry for secure cutting performance.

Tiger·tec Silver coated carbide WSM20S
Optimised for stainless steels and superalloys
Trigon 80° shape with 1.2 mm corner radius
0° negative rake with MM5 chipbreaker

Robust edge geometry for demanding materials

The trigon 80° outline and a 1.2 mm corner radius create a mechanically strong cutting edge that reduces the risk of chipping and vibration during interrupted cuts. With a 0° negative rake, the insert offers a conservative edge angle that increases edge stability under high cutting forces, making it particularly suitable for roughing passes and heavy feeds. The combination of shape and rake improves process reliability and leads to fewer tool changes and steadier cycle times on production lines.

Coating and grade that extend productive runtime

The WSM20S grade, built on Tiger·tec Silver coating technology, provides a balanced response to the adhesion and thermal demands of ISO group M (stainless steels) and S (heat-resistant superalloys, including titanium). The multi-layer coating enhances wear resistance and maintains a stable cutting edge at elevated temperatures, which translates into higher usable cutting lengths and a better cost-per-part ratio. For operations seeking predictable tool life and consistent surface quality, this coated grade supports more productive machining windows.

Controlled chip formation and surface quality

The MM5 chipbreaker is engineered to generate compact, controllable chips in the targeted material groups, so the process is less dependent on restrictive machining conditions. That results in fewer stoppages for chip clearance and a more consistent surface finish on the turned component. The insert’s tolerance class M further assures repeatable seating and interchangeability in toolholders, supporting tight process control in series production and minimising downtime due to indexing or regripping.

Application focus and operational benefits

Engineered for demanding sectors such as medical, aerospace and high-value subcontract machining, this insert excels in the turning of stainless steels and heat-resistant superalloys where heat generation and edge stability are critical. The Trigon geometry offers a good compromise between strength and access in shoulder and profile turning, while the coated grade and chipbreaker reduce the need for overly conservative cutting data. For machinists seeking dependable performance under strenuous conditions, this solution helps to increase throughput and reduce scrap rates.

For tailored cutting data, availability checks or application recommendations for Walter Tools Tiger·tec Silver inserts, contact Metav Werkzeuge GmbH at info@metav-werkzeuge.com or call +49 2822 7131930 for expert support and fast supply.

Technical data

• Article number: WNMG080412-MM5-WSM20S-WALTER
• Designation: WNMG080412-MM5 WSM20S
• Product type: Indexable turning insert
• Brand: Walter Tools

Key dimensions

• Insert size: 08
• Thickness code: 04
• Corner radius: 1.2 mm
• Shape angle: 80°
• Rake angle: 0° (negative)

Features

• Grade: WSM20S (Tiger·tec Silver coated carbide)
• Chipbreaker: MM5
• Material groups: S / M (superalloys/titanium, stainless steels)
• Tolerance class: M
• Series: Tiger·tec Silver

FAQ

What materials is this insert suitable for?
The WNMG080412-MM5 WSM20S is specified for ISO group M (stainless steels) and group S (heat-resistant superalloys and titanium), where the Tiger·tec Silver grade supports secure chip formation and thermal resistance.

How does the Trigon 80° shape affect machining?
The Trigon 80° outline increases edge strength and access in shoulder and profile turning, improving stability for heavy cuts while preserving adequate cutting geometry for finishing passes.

Which applications benefit most from the MM5 chipbreaker?
The MM5 chipbreaker is ideal for operations that require compact, controllable chips in stainless steels and superalloys, reducing chip-handling issues and supporting consistent surface quality.

Can the insert be used for roughing and finishing?
Yes, the insert’s robust geometry and coated grade make it suitable for roughing under high forces and, with adjusted feeds and speeds, for achieving acceptable finishes in stainless and heat-resistant alloys.

Is the WSM20S grade suitable for high-speed machining?
WSM20S is optimised for thermal stability and wear resistance; while it extends performance in demanding materials, machining parameters should be adapted to the component material, coolant strategy and machine capability to exploit high-speed benefits safely.

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